Longhua County Environmental Protection Bureau, Chengde, Hebei, China Historical Air Quality Analysis
Dive into detailed Air Quality Insights with historical data, monthly patterns, and yearly trends at your fingertips!
Good
050
Moderate
100
Poor
150
Unhealthy
200
Severe
300
Hazardous
301+
August Air Quality Analysis
Longhua County Environmental Protection Bureau, Chengde, Hebei, China
2022
2024
2025
2026
AQI
.
Days
AQI Trends: Highest and Lowest
Highest AQI recorded on
7th Aug 2024
83AQILowest AQI recorded on
12th Aug 2024
26AQISame Day Analysis (17th August):
On this day, AQI across the 4 years varied significantly: 2026 ranks 3rd highest AQI at 34 of Good air quality, showing improvement over 2025 and 2024 on the same day.
Day & Night AQI Trend: 16th Aug - 17th Aug 2026
Longhua County Environmental Protection Bureau, Chengde, Hebei, China
AQI
Day
Night
.
5 AM16th Aug 2026
7 PM
4 AM17th Aug 2026
Day time
Avg. Highest Time
12PM16th Aug
67AQI
Avg. Lowest Time
7PM16th Aug
21AQI
Night time
Avg. Highest Time
3AM17th Aug
46AQI
Avg. Lowest Time
1AM17th Aug
21AQI
In the last 24 hours,
Longhua County Environmental Protection Bureau's AQI reached its highest point of 67 at 12 PM during the Day, while the lowest point, 21, was recorded at 1 AM during the Night between 16th Aug and 17th Aug 2026.
Day & Night AQI Trend : Jul - Aug 2026
Longhua County Environmental Protection Bureau, Chengde, Hebei, China
JulAug
19th - 20th20th - 21st21st - 22nd22nd - 23rd23rd - 24th24th - 25th25th - 26th26th - 27th27th - 28th28th - 29th29th - 30th30th - 31st31st - 01st01st - 02nd02nd - 03rd03rd - 04th04th - 05th05th - 06th06th - 07th07th - 08th08th - 09th09th - 10th10th - 11th11th - 12th12th - 13th13th - 14th14th - 15th15th - 16th16th - 17th17th
Day
Night
19th Jul 2026645 AMAQI
19th Jul 2026516 AMAQI
19th Jul 2026277 AMAQI
19th Jul 2026338 AMAQI
19th Jul 2026219 AMAQI
19th Jul 20261910 AMAQI
19th Jul 20262311 AMAQI
19th Jul 20262912 PMAQI
19th Jul 2026311 PMAQI
19th Jul 2026442 PMAQI
19th Jul 2026273 PMAQI
19th Jul 2026294 PMAQI
19th Jul 2026235 PMAQI
19th Jul 2026276 PMAQI
19th Jul 2026297 PMAQI
19th Jul 2026278 PMAQI
19th Jul 2026259 PMAQI
19th Jul 20265310 PMAQI
19th Jul 20266011 PMAQI
20th Jul 20266312 AMAQI
20th Jul 2026601 AMAQI
20th Jul 2026662 AMAQI
20th Jul 2026733 AMAQI
20th Jul 2026764 AMAQI
22°C18/29°C
20th Jul 2026695 AMAQI
20th Jul 2026786 AMAQI
20th Jul 2026797 AMAQI
20th Jul 2026828 AMAQI
20th Jul 2026859 AMAQI
20th Jul 20266210 AMAQI
20th Jul 20266411 AMAQI
20th Jul 20266512 PMAQI
20th Jul 2026721 PMAQI
20th Jul 2026712 PMAQI
20th Jul 2026583 PMAQI
20th Jul 2026604 PMAQI
20th Jul 2026535 PMAQI
20th Jul 2026236 PMAQI
20th Jul 2026217 PMAQI
20th Jul 2026238 PMAQI
20th Jul 2026469 PMAQI
20th Jul 20263010 PMAQI
20th Jul 20263011 PMAQI
21st Jul 20264412 AMAQI
21st Jul 2026401 AMAQI
21st Jul 2026482 AMAQI
21st Jul 2026483 AMAQI
21st Jul 2026604 AMAQI
23°C18/30°C
21st Jul 2026505 AMAQI
21st Jul 2026446 AMAQI
21st Jul 2026427 AMAQI
21st Jul 2026428 AMAQI
21st Jul 2026389 AMAQI
21st Jul 20265110 AMAQI
21st Jul 20266312 PMAQI
21st Jul 2026831 PMAQI
21st Jul 2026802 PMAQI
21st Jul 2026783 PMAQI
21st Jul 2026784 PMAQI
21st Jul 2026625 PMAQI
21st Jul 2026966 PMAQI
21st Jul 2026637 PMAQI
21st Jul 2026758 PMAQI
21st Jul 2026719 PMAQI
21st Jul 20268610 PMAQI
21st Jul 20269411 PMAQI
22nd Jul 20268612 AMAQI
22nd Jul 2026861 AMAQI
22nd Jul 2026782 AMAQI
22nd Jul 2026733 AMAQI
22nd Jul 2026794 AMAQI
23°C18/30°C
22nd Jul 2026725 AMAQI
22nd Jul 2026606 AMAQI
22nd Jul 2026627 AMAQI
22nd Jul 2026718 AMAQI
22nd Jul 2026739 AMAQI
22nd Jul 20266710 AMAQI
22nd Jul 20265311 AMAQI
22nd Jul 20264612 PMAQI
22nd Jul 2026271 PMAQI
22nd Jul 2026292 PMAQI
22nd Jul 2026383 PMAQI
22nd Jul 2026274 PMAQI
22nd Jul 2026335 PMAQI
22nd Jul 2026276 PMAQI
22nd Jul 2026347 PMAQI
22nd Jul 2026368 PMAQI
22nd Jul 2026409 PMAQI
22nd Jul 20263810 PMAQI
22nd Jul 20265411 PMAQI
23rd Jul 20264012 AMAQI
23rd Jul 2026521 AMAQI
23rd Jul 2026382 AMAQI
23rd Jul 2026333 AMAQI
23rd Jul 2026514 AMAQI
23°C19/30°C
23rd Jul 2026485 AMAQI
23rd Jul 2026596 AMAQI
23rd Jul 2026517 AMAQI
23rd Jul 2026648 AMAQI
23rd Jul 2026409 AMAQI
23rd Jul 20265910 AMAQI
23rd Jul 20267411 AMAQI
23rd Jul 20269412 PMAQI
23rd Jul 2026981 PMAQI
23rd Jul 2026902 PMAQI
23rd Jul 2026983 PMAQI
23rd Jul 20261104 PMAQI
23rd Jul 2026945 PMAQI
23rd Jul 2026986 PMAQI
23rd Jul 2026947 PMAQI
23rd Jul 20261098 PMAQI
23rd Jul 20261129 PMAQI
23rd Jul 202610910 PMAQI
23rd Jul 202610011 PMAQI
24th Jul 20269812 AMAQI
24th Jul 2026841 AMAQI
24th Jul 2026882 AMAQI
24th Jul 2026853 AMAQI
24th Jul 2026794 AMAQI
22°C17/28°C
24th Jul 2026805 AMAQI
24th Jul 2026766 AMAQI
24th Jul 2026797 AMAQI
24th Jul 2026788 AMAQI
24th Jul 2026959 AMAQI
24th Jul 20268510 AMAQI
24th Jul 20268311 AMAQI
24th Jul 20267612 PMAQI
24th Jul 2026651 PMAQI
24th Jul 2026652 PMAQI
24th Jul 2026533 PMAQI
24th Jul 2026404 PMAQI
24th Jul 2026335 PMAQI
24th Jul 2026316 PMAQI
24th Jul 2026407 PMAQI
24th Jul 2026328 PMAQI
24th Jul 2026469 PMAQI
24th Jul 20265510 PMAQI
24th Jul 20266411 PMAQI
25th Jul 20266512 AMAQI
25th Jul 2026571 AMAQI
25th Jul 2026642 AMAQI
25th Jul 2026593 AMAQI
25th Jul 2026344 AMAQI
23°C17/30°C
25th Jul 2026545 AMAQI
25th Jul 2026566 AMAQI
25th Jul 2026677 AMAQI
25th Jul 2026638 AMAQI
25th Jul 2026369 AMAQI
25th Jul 20264810 AMAQI
25th Jul 20265711 AMAQI
25th Jul 20265412 PMAQI
25th Jul 2026681 PMAQI
25th Jul 2026512 PMAQI
25th Jul 2026423 PMAQI
25th Jul 2026444 PMAQI
25th Jul 2026345 PMAQI
25th Jul 2026326 PMAQI
25th Jul 2026387 PMAQI
25th Jul 2026468 PMAQI
25th Jul 2026469 PMAQI
25th Jul 20264810 PMAQI
25th Jul 20265111 PMAQI
26th Jul 20265012 AMAQI
26th Jul 2026571 AMAQI
26th Jul 2026322 AMAQI
26th Jul 2026273 AMAQI
26th Jul 2026284 AMAQI
24°C18/31°C
26th Jul 2026305 AMAQI
26th Jul 2026386 AMAQI
26th Jul 2026307 AMAQI
26th Jul 2026258 AMAQI
26th Jul 2026289 AMAQI
26th Jul 20265010 AMAQI
26th Jul 20264811 AMAQI
26th Jul 20265812 PMAQI
26th Jul 2026541 PMAQI
26th Jul 2026462 PMAQI
26th Jul 2026383 PMAQI
26th Jul 2026364 PMAQI
26th Jul 2026365 PMAQI
26th Jul 2026296 PMAQI
26th Jul 2026277 PMAQI
26th Jul 2026278 PMAQI
26th Jul 2026469 PMAQI
26th Jul 20265610 PMAQI
26th Jul 20265811 PMAQI
27th Jul 20265412 AMAQI
27th Jul 2026461 AMAQI
27th Jul 2026422 AMAQI
27th Jul 2026473 AMAQI
27th Jul 2026444 AMAQI
24°C19/30°C
27th Jul 2026385 AMAQI
27th Jul 2026446 AMAQI
27th Jul 2026387 AMAQI
27th Jul 2026368 AMAQI
27th Jul 2026429 AMAQI
27th Jul 20263610 AMAQI
27th Jul 20265411 AMAQI
27th Jul 20268412 PMAQI
27th Jul 2026881 PMAQI
27th Jul 20261082 PMAQI
27th Jul 20261093 PMAQI
27th Jul 20261024 PMAQI
27th Jul 2026645 PMAQI
27th Jul 2026426 PMAQI
27th Jul 2026467 PMAQI
27th Jul 2026628 PMAQI
27th Jul 2026769 PMAQI
27th Jul 20268410 PMAQI
27th Jul 20268611 PMAQI
28th Jul 20267612 AMAQI
28th Jul 2026741 AMAQI
28th Jul 2026782 AMAQI
28th Jul 2026823 AMAQI
28th Jul 2026724 AMAQI
25°C19/32°C
28th Jul 2026715 AMAQI
28th Jul 2026686 AMAQI
28th Jul 2026707 AMAQI
28th Jul 2026608 AMAQI
28th Jul 2026629 AMAQI
28th Jul 20266610 AMAQI
28th Jul 20267211 AMAQI
28th Jul 20266212 PMAQI
28th Jul 2026651 PMAQI
28th Jul 2026532 PMAQI
28th Jul 2026383 PMAQI
28th Jul 2026364 PMAQI
28th Jul 2026295 PMAQI
28th Jul 2026296 PMAQI
28th Jul 2026297 PMAQI
28th Jul 2026388 PMAQI
28th Jul 2026449 PMAQI
28th Jul 20266010 PMAQI
28th Jul 20266211 PMAQI
29th Jul 20265012 AMAQI
29th Jul 2026521 AMAQI
29th Jul 2026552 AMAQI
29th Jul 2026513 AMAQI
29th Jul 2026464 AMAQI
26°C20/34°C
29th Jul 2026565 AMAQI
29th Jul 2026586 AMAQI
29th Jul 2026567 AMAQI
29th Jul 2026588 AMAQI
29th Jul 2026589 AMAQI
29th Jul 20265410 AMAQI
29th Jul 20266411 AMAQI
29th Jul 20266312 PMAQI
29th Jul 2026601 PMAQI
29th Jul 2026562 PMAQI
29th Jul 2026423 PMAQI
29th Jul 2026294 PMAQI
29th Jul 2026255 PMAQI
29th Jul 2026236 PMAQI
29th Jul 2026277 PMAQI
29th Jul 2026368 PMAQI
29th Jul 2026459 PMAQI
29th Jul 20266010 PMAQI
29th Jul 20264211 PMAQI
30th Jul 20262912 AMAQI
30th Jul 2026311 AMAQI
30th Jul 2026332 AMAQI
30th Jul 2026273 AMAQI
30th Jul 2026334 AMAQI
26°C20/34°C
30th Jul 2026335 AMAQI
30th Jul 2026316 AMAQI
30th Jul 2026487 AMAQI
30th Jul 2026508 AMAQI
30th Jul 2026409 AMAQI
30th Jul 20265110 AMAQI
30th Jul 20263411 AMAQI
30th Jul 20263112 PMAQI
30th Jul 2026401 PMAQI
30th Jul 2026312 PMAQI
30th Jul 2026213 PMAQI
30th Jul 2026234 PMAQI
30th Jul 2026485 PMAQI
30th Jul 2026386 PMAQI
30th Jul 2026447 PMAQI
30th Jul 2026448 PMAQI
30th Jul 2026369 PMAQI
30th Jul 20264210 PMAQI
30th Jul 20265411 PMAQI
31st Jul 20265512 AMAQI
31st Jul 2026461 AMAQI
31st Jul 2026542 AMAQI
31st Jul 2026423 AMAQI
31st Jul 2026504 AMAQI
26°C21/32°C
31st Jul 2026385 AMAQI
31st Jul 2026426 AMAQI
31st Jul 2026407 AMAQI
31st Jul 2026368 AMAQI
31st Jul 2026369 AMAQI
31st Jul 20264610 AMAQI
31st Jul 20265811 AMAQI
31st Jul 20263812 PMAQI
31st Jul 2026381 PMAQI
31st Jul 2026362 PMAQI
31st Jul 2026333 PMAQI
31st Jul 2026314 PMAQI
31st Jul 2026315 PMAQI
31st Jul 2026386 PMAQI
31st Jul 2026467 PMAQI
31st Jul 2026448 PMAQI
31st Jul 2026489 PMAQI
31st Jul 20264810 PMAQI
31st Jul 20264711 PMAQI
1st Aug 20265412 AMAQI
1st Aug 2026491 AMAQI
1st Aug 2026522 AMAQI
1st Aug 2026603 AMAQI
1st Aug 2026574 AMAQI
27°C21/33°C
1st Aug 2026575 AMAQI
1st Aug 2026546 AMAQI
1st Aug 2026517 AMAQI
1st Aug 2026658 AMAQI
1st Aug 2026599 AMAQI
1st Aug 20266010 AMAQI
1st Aug 20266011 AMAQI
1st Aug 20265112 PMAQI
1st Aug 2026601 PMAQI
1st Aug 2026592 PMAQI
1st Aug 2026683 PMAQI
1st Aug 2026604 PMAQI
1st Aug 2026505 PMAQI
1st Aug 2026486 PMAQI
1st Aug 2026497 PMAQI
1st Aug 2026388 PMAQI
1st Aug 2026429 PMAQI
1st Aug 20265510 PMAQI
1st Aug 20265211 PMAQI
2nd Aug 20265212 AMAQI
2nd Aug 2026521 AMAQI
2nd Aug 2026452 AMAQI
2nd Aug 2026463 AMAQI
2nd Aug 2026384 AMAQI
26°C21/32°C
2nd Aug 2026405 AMAQI
2nd Aug 2026366 AMAQI
2nd Aug 2026367 AMAQI
2nd Aug 2026388 AMAQI
2nd Aug 2026409 AMAQI
2nd Aug 20262910 AMAQI
2nd Aug 20263311 AMAQI
2nd Aug 20263612 PMAQI
2nd Aug 2026511 PMAQI
2nd Aug 2026452 PMAQI
2nd Aug 2026273 PMAQI
2nd Aug 2026274 PMAQI
2nd Aug 2026345 PMAQI
2nd Aug 2026446 PMAQI
2nd Aug 2026517 PMAQI
2nd Aug 2026568 PMAQI
2nd Aug 2026629 PMAQI
2nd Aug 20266410 PMAQI
2nd Aug 20266011 PMAQI
3rd Aug 20265912 AMAQI
3rd Aug 2026671 AMAQI
3rd Aug 2026682 AMAQI
3rd Aug 2026693 AMAQI
3rd Aug 2026544 AMAQI
26°C21/32°C
3rd Aug 2026425 AMAQI
3rd Aug 2026486 AMAQI
3rd Aug 2026407 AMAQI
3rd Aug 2026368 AMAQI
3rd Aug 2026389 AMAQI
3rd Aug 20264410 AMAQI
3rd Aug 20265511 AMAQI
3rd Aug 20265012 PMAQI
3rd Aug 2026531 PMAQI
3rd Aug 2026402 PMAQI
3rd Aug 2026293 PMAQI
3rd Aug 2026404 PMAQI
3rd Aug 2026325 PMAQI
3rd Aug 2026326 PMAQI
3rd Aug 2026407 PMAQI
3rd Aug 2026388 PMAQI
3rd Aug 2026449 PMAQI
3rd Aug 20265110 PMAQI
3rd Aug 20265311 PMAQI
4th Aug 20264012 AMAQI
4th Aug 2026271 AMAQI
4th Aug 2026272 AMAQI
4th Aug 2026233 AMAQI
4th Aug 2026304 AMAQI
26°C21/34°C
4th Aug 2026235 AMAQI
4th Aug 2026216 AMAQI
4th Aug 2026217 AMAQI
4th Aug 2026218 AMAQI
4th Aug 2026239 AMAQI
4th Aug 20262110 AMAQI
4th Aug 20262111 AMAQI
4th Aug 20265512 PMAQI
4th Aug 2026361 PMAQI
4th Aug 2026272 PMAQI
4th Aug 2026473 PMAQI
4th Aug 2026404 PMAQI
4th Aug 2026385 PMAQI
4th Aug 2026336 PMAQI
4th Aug 2026367 PMAQI
4th Aug 2026388 PMAQI
4th Aug 2026429 PMAQI
4th Aug 20265110 PMAQI
4th Aug 20265111 PMAQI
5th Aug 20265212 AMAQI
5th Aug 2026621 AMAQI
5th Aug 2026592 AMAQI
5th Aug 2026523 AMAQI
5th Aug 2026484 AMAQI
26°C20/33°C
5th Aug 2026505 AMAQI
5th Aug 2026556 AMAQI
5th Aug 2026537 AMAQI
5th Aug 2026318 AMAQI
5th Aug 2026469 AMAQI
5th Aug 20263810 AMAQI
5th Aug 20264011 AMAQI
5th Aug 20265112 PMAQI
5th Aug 2026441 PMAQI
5th Aug 2026362 PMAQI
5th Aug 2026423 PMAQI
5th Aug 2026364 PMAQI
5th Aug 2026385 PMAQI
5th Aug 2026346 PMAQI
5th Aug 2026237 PMAQI
5th Aug 2026328 PMAQI
5th Aug 2026449 PMAQI
5th Aug 20265410 PMAQI
5th Aug 20265811 PMAQI
6th Aug 20266312 AMAQI
6th Aug 2026571 AMAQI
6th Aug 2026642 AMAQI
6th Aug 2026583 AMAQI
6th Aug 2026444 AMAQI
26°C20/33°C
6th Aug 2026465 AMAQI
6th Aug 2026526 AMAQI
6th Aug 2026517 AMAQI
6th Aug 2026388 AMAQI
6th Aug 2026429 AMAQI
6th Aug 20263410 AMAQI
6th Aug 20263111 AMAQI
6th Aug 20265712 PMAQI
6th Aug 2026581 PMAQI
6th Aug 2026652 PMAQI
6th Aug 2026653 PMAQI
6th Aug 2026654 PMAQI
6th Aug 2026665 PMAQI
6th Aug 2026626 PMAQI
6th Aug 2026527 PMAQI
6th Aug 2026408 PMAQI
6th Aug 2026329 PMAQI
6th Aug 20263410 PMAQI
6th Aug 20264011 PMAQI
7th Aug 20265412 AMAQI
7th Aug 2026561 AMAQI
7th Aug 2026652 AMAQI
7th Aug 2026623 AMAQI
7th Aug 2026594 AMAQI
27°C21/33°C
7th Aug 2026565 AMAQI
7th Aug 2026516 AMAQI
7th Aug 2026557 AMAQI
7th Aug 2026568 AMAQI
7th Aug 2026609 AMAQI
7th Aug 20266210 AMAQI
7th Aug 20265711 AMAQI
7th Aug 20265212 PMAQI
7th Aug 2026241 PMAQI
7th Aug 2026382 PMAQI
7th Aug 2026373 PMAQI
7th Aug 2026264 PMAQI
7th Aug 2026345 PMAQI
7th Aug 2026256 PMAQI
7th Aug 2026367 PMAQI
7th Aug 2026238 PMAQI
7th Aug 2026489 PMAQI
7th Aug 20265010 PMAQI
7th Aug 20262911 PMAQI
8th Aug 20262912 AMAQI
8th Aug 2026381 AMAQI
8th Aug 2026292 AMAQI
8th Aug 2026323 AMAQI
8th Aug 2026364 AMAQI
24°C19/30°C
8th Aug 2026235 AMAQI
8th Aug 2026276 AMAQI
8th Aug 2026297 AMAQI
8th Aug 2026428 AMAQI
8th Aug 2026389 AMAQI
8th Aug 20262110 AMAQI
8th Aug 20263111 AMAQI
8th Aug 20262312 PMAQI
8th Aug 2026191 PMAQI
8th Aug 2026232 PMAQI
8th Aug 2026233 PMAQI
8th Aug 2026214 PMAQI
8th Aug 2026345 PMAQI
8th Aug 2026216 PMAQI
8th Aug 2026317 PMAQI
8th Aug 2026508 PMAQI
8th Aug 2026519 PMAQI
8th Aug 20265310 PMAQI
8th Aug 20265411 PMAQI
9th Aug 20265012 AMAQI
9th Aug 2026441 AMAQI
9th Aug 2026312 AMAQI
9th Aug 2026253 AMAQI
9th Aug 2026214 AMAQI
21°C16/27°C
9th Aug 2026295 AMAQI
9th Aug 2026216 AMAQI
9th Aug 2026227 AMAQI
9th Aug 2026218 AMAQI
9th Aug 2026299 AMAQI
9th Aug 20262510 AMAQI
9th Aug 20262311 AMAQI
9th Aug 20262112 PMAQI
9th Aug 2026211 PMAQI
9th Aug 2026272 PMAQI
9th Aug 2026313 PMAQI
9th Aug 2026254 PMAQI
9th Aug 2026295 PMAQI
9th Aug 2026316 PMAQI
9th Aug 2026517 PMAQI
9th Aug 2026558 PMAQI
9th Aug 2026659 PMAQI
9th Aug 20264810 PMAQI
9th Aug 20265411 PMAQI
10th Aug 20263312 AMAQI
10th Aug 2026551 AMAQI
10th Aug 2026682 AMAQI
10th Aug 2026403 AMAQI
10th Aug 2026554 AMAQI
20°C14/28°C
10th Aug 2026535 AMAQI
10th Aug 2026596 AMAQI
10th Aug 2026577 AMAQI
10th Aug 2026368 AMAQI
10th Aug 2026369 AMAQI
10th Aug 20263410 AMAQI
10th Aug 20263211 AMAQI
10th Aug 20264612 PMAQI
10th Aug 2026631 PMAQI
10th Aug 2026582 PMAQI
10th Aug 2026443 PMAQI
10th Aug 2026544 PMAQI
10th Aug 2026675 PMAQI
10th Aug 2026466 PMAQI
10th Aug 2026547 PMAQI
10th Aug 2026738 PMAQI
10th Aug 2026899 PMAQI
10th Aug 20267210 PMAQI
10th Aug 20267011 PMAQI
11th Aug 20267812 AMAQI
11th Aug 2026731 AMAQI
11th Aug 2026802 AMAQI
11th Aug 2026693 AMAQI
11th Aug 2026864 AMAQI
22°C14/32°C
11th Aug 2026795 AMAQI
11th Aug 2026956 AMAQI
11th Aug 2026837 AMAQI
11th Aug 2026698 AMAQI
11th Aug 2026709 AMAQI
11th Aug 20266610 AMAQI
11th Aug 20267111 AMAQI
11th Aug 20267912 PMAQI
11th Aug 2026621 PMAQI
11th Aug 2026652 PMAQI
11th Aug 2026643 PMAQI
11th Aug 2026514 PMAQI
11th Aug 2026425 PMAQI
11th Aug 2026526 PMAQI
11th Aug 2026547 PMAQI
11th Aug 2026518 PMAQI
11th Aug 2026629 PMAQI
11th Aug 20262910 PMAQI
11th Aug 20264411 PMAQI
12th Aug 20263612 AMAQI
12th Aug 2026461 AMAQI
12th Aug 2026512 AMAQI
12th Aug 2026403 AMAQI
12th Aug 2026484 AMAQI
24°C17/32°C
12th Aug 2026445 AMAQI
12th Aug 2026556 AMAQI
12th Aug 2026527 AMAQI
12th Aug 2026428 AMAQI
12th Aug 2026219 AMAQI
12th Aug 20262510 AMAQI
12th Aug 20263611 AMAQI
12th Aug 20264212 PMAQI
12th Aug 2026361 PMAQI
12th Aug 2026212 PMAQI
12th Aug 2026313 PMAQI
12th Aug 2026444 PMAQI
12th Aug 2026215 PMAQI
12th Aug 2026256 PMAQI
12th Aug 2026297 PMAQI
12th Aug 2026388 PMAQI
12th Aug 2026469 PMAQI
12th Aug 20262210 PMAQI
12th Aug 20262111 PMAQI
13th Aug 20262512 AMAQI
13th Aug 2026251 AMAQI
13th Aug 2026222 AMAQI
13th Aug 2026423 AMAQI
13th Aug 2026254 AMAQI
21°C19/22°C
13th Aug 2026315 AMAQI
13th Aug 2026276 AMAQI
13th Aug 2026237 AMAQI
13th Aug 2026238 AMAQI
13th Aug 2026149 AMAQI
13th Aug 20262510 AMAQI
13th Aug 20262111 AMAQI
13th Aug 20262112 PMAQI
13th Aug 2026141 PMAQI
13th Aug 2026252 PMAQI
13th Aug 2026233 PMAQI
13th Aug 2026294 PMAQI
13th Aug 2026235 PMAQI
13th Aug 2026256 PMAQI
13th Aug 2026237 PMAQI
13th Aug 2026278 PMAQI
13th Aug 2026319 PMAQI
13th Aug 20264610 PMAQI
13th Aug 20263311 PMAQI
14th Aug 20265212 AMAQI
14th Aug 2026231 AMAQI
14th Aug 2026292 AMAQI
14th Aug 2026313 AMAQI
14th Aug 2026254 AMAQI
21°C17/27°C
14th Aug 2026315 AMAQI
14th Aug 2026296 AMAQI
14th Aug 2026297 AMAQI
14th Aug 2026268 AMAQI
14th Aug 2026299 AMAQI
14th Aug 20262510 AMAQI
14th Aug 20262511 AMAQI
14th Aug 20262712 PMAQI
14th Aug 2026291 PMAQI
14th Aug 2026252 PMAQI
14th Aug 2026253 PMAQI
14th Aug 2026314 PMAQI
14th Aug 2026295 PMAQI
14th Aug 2026166 PMAQI
14th Aug 2026257 PMAQI
14th Aug 2026218 PMAQI
14th Aug 2026339 PMAQI
14th Aug 20264210 PMAQI
14th Aug 20266211 PMAQI
15th Aug 20265812 AMAQI
15th Aug 2026291 AMAQI
15th Aug 2026292 AMAQI
15th Aug 2026563 AMAQI
15th Aug 2026274 AMAQI
22°C15/29°C
15th Aug 2026335 AMAQI
15th Aug 2026386 AMAQI
15th Aug 2026337 AMAQI
15th Aug 2026328 AMAQI
15th Aug 2026429 AMAQI
15th Aug 20263810 AMAQI
15th Aug 20262911 AMAQI
15th Aug 20262112 PMAQI
15th Aug 2026381 PMAQI
15th Aug 2026272 PMAQI
15th Aug 2026253 PMAQI
15th Aug 2026254 PMAQI
15th Aug 2026315 PMAQI
15th Aug 2026466 PMAQI
15th Aug 2026557 PMAQI
15th Aug 2026648 PMAQI
15th Aug 2026699 PMAQI
15th Aug 20268410 PMAQI
15th Aug 20264811 PMAQI
16th Aug 20265312 AMAQI
16th Aug 2026381 AMAQI
16th Aug 2026572 AMAQI
16th Aug 2026643 AMAQI
16th Aug 2026224 AMAQI
22°C17/28°C
16th Aug 2026285 AMAQI
16th Aug 2026406 AMAQI
16th Aug 2026367 AMAQI
16th Aug 2026408 AMAQI
16th Aug 2026569 AMAQI
16th Aug 20263810 AMAQI
16th Aug 20264811 AMAQI
16th Aug 20266712 PMAQI
16th Aug 2026521 PMAQI
16th Aug 2026582 PMAQI
16th Aug 2026483 PMAQI
16th Aug 2026334 PMAQI
16th Aug 2026255 PMAQI
16th Aug 2026236 PMAQI
16th Aug 2026217 PMAQI
16th Aug 2026238 PMAQI
16th Aug 2026279 PMAQI
16th Aug 20263310 PMAQI
16th Aug 20262511 PMAQI
17th Aug 20263312 AMAQI
17th Aug 2026211 AMAQI
17th Aug 2026362 AMAQI
17th Aug 2026463 AMAQI
17th Aug 2026294 AMAQI
21°C16/26°C
17th Aug 2026275 AMAQI
5 AM17th Aug 2026366 AMAQI
17th Aug 2026257 AMAQI
17th Aug 2026528 AMAQI
17th Aug 2026449 AMAQI
17th Aug 20262910 AMAQI
17th Aug 20262711 AMAQI
17th Aug 20261712 PMAQI
12 PM17th Aug 2026331 PMAQI
17th Aug 2026292 PMAQI
17th Aug 2026273 PMAQI
17th Aug 2026214 PMAQI
17th Aug 2026275 PMAQI
17th Aug 2026256 PMAQI
17th Aug 2026317 PMAQI
7 PM17th Aug 2026408 PMAQI
17th Aug 2026559 PMAQI
17th Aug 20265310 PMAQI
17th Aug 20265911 PMAQI
12 AM
4 AM
10°C8/13°C
Day time
Avg. Highest Time
12 PM - 2 PM
49AQI
3 hours / Day
90 hours / Month
Avg. Lowest Time
6 PM
37AQI
1 hours / Day
30 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 12 PM to 2 PM (Avg. 49), while the lowest AQI was between 6 PM to 6 PM (Avg. 37).
Night time
Avg. Highest Time
10 PM - 11 PM
54AQI
2 hours / Day
60 hours / Month
Avg. Lowest Time
8 PM
44AQI
1 hours / Day
30 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 10 PM to 11 PM (Avg. 54), while the lowest AQI was between 8 PM to 8 PM (Avg. 44).
2026 Days Vs Air Quality
Longhua County Environmental Protection Bureau, Chengde, Hebei, China
2026
41%
95
47%
108
10%
23
1%
3
Total number of days with different AQI categories in last 229 days in 2026 (136 days remaining)
Good
95 DaysModerate
108 DaysPoor
23 DaysUnhealthy
3 DaysSevere
0 DaysHazardous
0 DaysUnder WHO’s Safe Air Quality Limits: 41%
Health Risk Level:
Significant
In 2026, 41% of 229 days were within WHO’s safe air quality limits, and 59% exceeded them. The risk of health issues is Significant, especially for those with existing respiratory or heart conditions.
Annual Air Quality Insights
Longhua County Environmental Protection Bureau, Chengde, Hebei, China
AQI levels in 2026
AQI (US)
PM₂.₅
PM₁₀
CO
SO₂
NO₂
O₃
Sun.Mon.Tue.Wed.Thu.Fri.Sat.
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
-1th undefined 2026
-1th undefined 2026
-1th undefined 2026
-1th undefined 2026
1st January 2026
63AQI (US)
63AQI (US)
2nd January 2026
65AQI (US)
65AQI (US)
3rd January 2026
98AQI (US)
98AQI (US)
4th January 2026
96AQI (US)
96AQI (US)
5th January 2026
65AQI (US)
65AQI (US)
6th January 2026
55AQI (US)
55AQI (US)
7th January 2026
43AQI (US)
43AQI (US)
8th January 2026
75AQI (US)
75AQI (US)
9th January 2026
119AQI (US)
119AQI (US)
10th January 2026
38AQI (US)
38AQI (US)
11th January 2026
27AQI (US)
27AQI (US)
12th January 2026
65AQI (US)
65AQI (US)
13th January 2026
40AQI (US)
40AQI (US)
14th January 2026
88AQI (US)
88AQI (US)
15th January 2026
144AQI (US)
144AQI (US)
16th January 2026
98AQI (US)
98AQI (US)
17th January 2026
34AQI (US)
34AQI (US)
18th January 2026
69AQI (US)
69AQI (US)
19th January 2026
33AQI (US)
33AQI (US)
20th January 2026
32AQI (US)
32AQI (US)
21st January 2026
40AQI (US)
40AQI (US)
22nd January 2026
60AQI (US)
60AQI (US)
23rd January 2026
68AQI (US)
68AQI (US)
24th January 2026
58AQI (US)
58AQI (US)
25th January 2026
48AQI (US)
48AQI (US)
26th January 2026
69AQI (US)
69AQI (US)
27th January 2026
44AQI (US)
44AQI (US)
28th January 2026
81AQI (US)
81AQI (US)
29th January 2026
96AQI (US)
96AQI (US)
30th January 2026
98AQI (US)
98AQI (US)
31st January 2026
77AQI (US)
77AQI (US)
1st February 2026
54AQI (US)
54AQI (US)
2nd February 2026
32AQI (US)
32AQI (US)
3rd February 2026
83AQI (US)
83AQI (US)
4th February 2026
136AQI (US)
136AQI (US)
5th February 2026
83AQI (US)
83AQI (US)
6th February 2026
22AQI (US)
22AQI (US)
7th February 2026
24AQI (US)
24AQI (US)
8th February 2026
31AQI (US)
31AQI (US)
9th February 2026
77AQI (US)
77AQI (US)
10th February 2026
74AQI (US)
74AQI (US)
11th February 2026
47AQI (US)
47AQI (US)
12th February 2026
91AQI (US)
91AQI (US)
13th February 2026
98AQI (US)
98AQI (US)
14th February 2026
101AQI (US)
101AQI (US)
15th February 2026
30AQI (US)
30AQI (US)
16th February 2026
43AQI (US)
43AQI (US)
17th February 2026
87AQI (US)
87AQI (US)
18th February 2026
43AQI (US)
43AQI (US)
19th February 2026
76AQI (US)
76AQI (US)
20th February 2026
94AQI (US)
94AQI (US)
21st February 2026
111AQI (US)
111AQI (US)
22nd February 2026
55AQI (US)
55AQI (US)
23rd February 2026
40AQI (US)
40AQI (US)
24th February 2026
67AQI (US)
67AQI (US)
25th February 2026
122AQI (US)
122AQI (US)
26th February 2026
101AQI (US)
101AQI (US)
27th February 2026
90AQI (US)
90AQI (US)
28th February 2026
101AQI (US)
101AQI (US)
1st March 2026
103AQI (US)
103AQI (US)
2nd March 2026
143AQI (US)
143AQI (US)
3rd March 2026
107AQI (US)
107AQI (US)
4th March 2026
95AQI (US)
95AQI (US)
5th March 2026
110AQI (US)
110AQI (US)
6th March 2026
50AQI (US)
50AQI (US)
7th March 2026
80AQI (US)
80AQI (US)
8th March 2026
110AQI (US)
110AQI (US)
9th March 2026
33AQI (US)
33AQI (US)
10th March 2026
75AQI (US)
75AQI (US)
11th March 2026
62AQI (US)
62AQI (US)
12th March 2026
100AQI (US)
100AQI (US)
13th March 2026
151AQI (US)
151AQI (US)
14th March 2026
74AQI (US)
74AQI (US)
15th March 2026
64AQI (US)
64AQI (US)
16th March 2026
80AQI (US)
80AQI (US)
17th March 2026
135AQI (US)
135AQI (US)
18th March 2026
55AQI (US)
55AQI (US)
19th March 2026
46AQI (US)
46AQI (US)
20th March 2026
60AQI (US)
60AQI (US)
21st March 2026
99AQI (US)
99AQI (US)
22nd March 2026
119AQI (US)
119AQI (US)
23rd March 2026
152AQI (US)
152AQI (US)
24th March 2026
156AQI (US)
156AQI (US)
25th March 2026
137AQI (US)
137AQI (US)
26th March 2026
96AQI (US)
96AQI (US)
27th March 2026
38AQI (US)
38AQI (US)
28th March 2026
61AQI (US)
61AQI (US)
29th March 2026
102AQI (US)
102AQI (US)
30th March 2026
51AQI (US)
51AQI (US)
31st March 2026
49AQI (US)
49AQI (US)
1st April 2026
40AQI (US)
40AQI (US)
2nd April 2026
62AQI (US)
62AQI (US)
3rd April 2026
98AQI (US)
98AQI (US)
4th April 2026
77AQI (US)
77AQI (US)
5th April 2026
60AQI (US)
60AQI (US)
6th April 2026
33AQI (US)
33AQI (US)
7th April 2026
39AQI (US)
39AQI (US)
8th April 2026
76AQI (US)
76AQI (US)
9th April 2026
83AQI (US)
83AQI (US)
10th April 2026
36AQI (US)
36AQI (US)
11th April 2026
47AQI (US)
47AQI (US)
12th April 2026
62AQI (US)
62AQI (US)
13th April 2026
44AQI (US)
44AQI (US)
14th April 2026
94AQI (US)
94AQI (US)
15th April 2026
130AQI (US)
130AQI (US)
16th April 2026
131AQI (US)
131AQI (US)
17th April 2026
69AQI (US)
69AQI (US)
18th April 2026
109AQI (US)
109AQI (US)
19th April 2026
88AQI (US)
88AQI (US)
20th April 2026
70AQI (US)
70AQI (US)
21st April 2026
49AQI (US)
49AQI (US)
22nd April 2026
59AQI (US)
59AQI (US)
23rd April 2026
81AQI (US)
81AQI (US)
24th April 2026
96AQI (US)
96AQI (US)
25th April 2026
71AQI (US)
71AQI (US)
26th April 2026
64AQI (US)
64AQI (US)
27th April 2026
52AQI (US)
52AQI (US)
28th April 2026
26AQI (US)
26AQI (US)
29th April 2026
20AQI (US)
20AQI (US)
30th April 2026
30AQI (US)
30AQI (US)
1st May 2026
45AQI (US)
45AQI (US)
2nd May 2026
56AQI (US)
56AQI (US)
3rd May 2026
23AQI (US)
23AQI (US)
4th May 2026
30AQI (US)
30AQI (US)
5th May 2026
59AQI (US)
59AQI (US)
6th May 2026
63AQI (US)
63AQI (US)
7th May 2026
28AQI (US)
28AQI (US)
8th May 2026
39AQI (US)
39AQI (US)
9th May 2026
66AQI (US)
66AQI (US)
10th May 2026
76AQI (US)
76AQI (US)
11th May 2026
44AQI (US)
44AQI (US)
12th May 2026
67AQI (US)
67AQI (US)
13th May 2026
116AQI (US)
116AQI (US)
14th May 2026
132AQI (US)
132AQI (US)
15th May 2026
117AQI (US)
117AQI (US)
16th May 2026
77AQI (US)
77AQI (US)
17th May 2026
68AQI (US)
68AQI (US)
18th May 2026
63AQI (US)
63AQI (US)
19th May 2026
62AQI (US)
62AQI (US)
20th May 2026
71AQI (US)
71AQI (US)
21st May 2026
80AQI (US)
80AQI (US)
22nd May 2026
87AQI (US)
87AQI (US)
23rd May 2026
85AQI (US)
85AQI (US)
24th May 2026
78AQI (US)
78AQI (US)
25th May 2026
75AQI (US)
75AQI (US)
26th May 2026
55AQI (US)
55AQI (US)
27th May 2026
51AQI (US)
51AQI (US)
28th May 2026
34AQI (US)
34AQI (US)
29th May 2026
21AQI (US)
21AQI (US)
30th May 2026
32AQI (US)
32AQI (US)
31st May 2026
55AQI (US)
55AQI (US)
1st June 2026
39AQI (US)
39AQI (US)
2nd June 2026
83AQI (US)
83AQI (US)
3rd June 2026
42AQI (US)
42AQI (US)
4th June 2026
39AQI (US)
39AQI (US)
5th June 2026
35AQI (US)
35AQI (US)
6th June 2026
38AQI (US)
38AQI (US)
7th June 2026
36AQI (US)
36AQI (US)
8th June 2026
36AQI (US)
36AQI (US)
9th June 2026
33AQI (US)
33AQI (US)
10th June 2026
42AQI (US)
42AQI (US)
11th June 2026
36AQI (US)
36AQI (US)
12th June 2026
38AQI (US)
38AQI (US)
13th June 2026
77AQI (US)
77AQI (US)
14th June 2026
45AQI (US)
45AQI (US)
15th June 2026
89AQI (US)
89AQI (US)
16th June 2026
97AQI (US)
97AQI (US)
17th June 2026
46AQI (US)
46AQI (US)
18th June 2026
67AQI (US)
67AQI (US)
19th June 2026
95AQI (US)
95AQI (US)
20th June 2026
42AQI (US)
42AQI (US)
21st June 2026
29AQI (US)
29AQI (US)
22nd June 2026
39AQI (US)
39AQI (US)
23rd June 2026
39AQI (US)
39AQI (US)
24th June 2026
65AQI (US)
65AQI (US)
25th June 2026
27AQI (US)
27AQI (US)
26th June 2026
35AQI (US)
35AQI (US)
27th June 2026
56AQI (US)
56AQI (US)
28th June 2026
86AQI (US)
86AQI (US)
29th June 2026
88AQI (US)
88AQI (US)
30th June 2026
62AQI (US)
62AQI (US)
1st July 2026
46AQI (US)
46AQI (US)
2nd July 2026
67AQI (US)
67AQI (US)
3rd July 2026
72AQI (US)
72AQI (US)
4th July 2026
82AQI (US)
82AQI (US)
5th July 2026
28AQI (US)
28AQI (US)
6th July 2026
41AQI (US)
41AQI (US)
7th July 2026
47AQI (US)
47AQI (US)
8th July 2026
31AQI (US)
31AQI (US)
9th July 2026
48AQI (US)
48AQI (US)
10th July 2026
42AQI (US)
42AQI (US)
11th July 2026
20AQI (US)
20AQI (US)
12th July 2026
17AQI (US)
17AQI (US)
13th July 2026
46AQI (US)
46AQI (US)
14th July 2026
41AQI (US)
41AQI (US)
15th July 2026
34AQI (US)
34AQI (US)
16th July 2026
33AQI (US)
33AQI (US)
17th July 2026
50AQI (US)
50AQI (US)
18th July 2026
42AQI (US)
42AQI (US)
19th July 2026
38AQI (US)
38AQI (US)
20th July 2026
59AQI (US)
59AQI (US)
21st July 2026
62AQI (US)
62AQI (US)
22nd July 2026
54AQI (US)
54AQI (US)
23rd July 2026
76AQI (US)
76AQI (US)
24th July 2026
67AQI (US)
67AQI (US)
25th July 2026
51AQI (US)
51AQI (US)
26th July 2026
40AQI (US)
40AQI (US)
27th July 2026
61AQI (US)
61AQI (US)
28th July 2026
58AQI (US)
58AQI (US)
29th July 2026
49AQI (US)
49AQI (US)
30th July 2026
37AQI (US)
37AQI (US)
31st July 2026
43AQI (US)
43AQI (US)
1st August 2026
55AQI (US)
55AQI (US)
2nd August 2026
43AQI (US)
43AQI (US)
3rd August 2026
47AQI (US)
47AQI (US)
4th August 2026
33AQI (US)
33AQI (US)
5th August 2026
45AQI (US)
45AQI (US)
6th August 2026
51AQI (US)
51AQI (US)
7th August 2026
46AQI (US)
46AQI (US)
8th August 2026
32AQI (US)
32AQI (US)
9th August 2026
33AQI (US)
33AQI (US)
10th August 2026
54AQI (US)
54AQI (US)
11th August 2026
66AQI (US)
66AQI (US)
12th August 2026
36AQI (US)
36AQI (US)
13th August 2026
26AQI (US)
26AQI (US)
14th August 2026
30AQI (US)
30AQI (US)
15th August 2026
41AQI (US)
41AQI (US)
16th August 2026
40AQI (US)
40AQI (US)
17th August 2026
34AQI (US)
34AQI (US)
18th August 2026
19th August 2026
20th August 2026
21st August 2026
22nd August 2026
23rd August 2026
24th August 2026
25th August 2026
26th August 2026
27th August 2026
28th August 2026
29th August 2026
30th August 2026
31st August 2026
1st September 2026
2nd September 2026
3rd September 2026
4th September 2026
5th September 2026
6th September 2026
7th September 2026
8th September 2026
9th September 2026
10th September 2026
11th September 2026
12th September 2026
13th September 2026
14th September 2026
15th September 2026
16th September 2026
17th September 2026
18th September 2026
19th September 2026
20th September 2026
21st September 2026
22nd September 2026
23rd September 2026
24th September 2026
25th September 2026
26th September 2026
27th September 2026
28th September 2026
29th September 2026
30th September 2026
1st October 2026
2nd October 2026
3rd October 2026
4th October 2026
5th October 2026
6th October 2026
7th October 2026
8th October 2026
9th October 2026
10th October 2026
11th October 2026
12th October 2026
13th October 2026
14th October 2026
15th October 2026
16th October 2026
17th October 2026
18th October 2026
19th October 2026
20th October 2026
21st October 2026
22nd October 2026
23rd October 2026
24th October 2026
25th October 2026
26th October 2026
27th October 2026
28th October 2026
29th October 2026
30th October 2026
31st October 2026
1st November 2026
2nd November 2026
3rd November 2026
4th November 2026
5th November 2026
6th November 2026
7th November 2026
8th November 2026
9th November 2026
10th November 2026
11th November 2026
12th November 2026
13th November 2026
14th November 2026
15th November 2026
16th November 2026
17th November 2026
18th November 2026
19th November 2026
20th November 2026
21st November 2026
22nd November 2026
23rd November 2026
24th November 2026
25th November 2026
26th November 2026
27th November 2026
28th November 2026
29th November 2026
30th November 2026
1st December 2026
2nd December 2026
3rd December 2026
4th December 2026
5th December 2026
6th December 2026
7th December 2026
8th December 2026
9th December 2026
10th December 2026
11th December 2026
12th December 2026
13th December 2026
14th December 2026
15th December 2026
16th December 2026
17th December 2026
18th December 2026
19th December 2026
20th December 2026
21st December 2026
22nd December 2026
23rd December 2026
24th December 2026
25th December 2026
26th December 2026
27th December 2026
28th December 2026
29th December 2026
30th December 2026
31st December 2026
67AQI (US)
72AQI (US)
90AQI (US)
67AQI (US)
63AQI (US)
53AQI (US)
48AQI (US)
42AQI (US)
No. of days
Jan.Feb.Mar.Apr.MayJun.Jul.Aug.Sep.Oct.Nov.Dec.Total Days
202664AQI (US)
10
19
2
9
13
6
5
14
9
3
10
17
3
9
19
3
19
11
20
11
13
4
95
108
23
3
Highest AQI (US) recorded in
March90AQI (US)
Lowest AQI (US) recorded in
August42AQI (US)
202572AQI (US)
24
6
1
4
22
2
23
7
1
30
30
1
3
27
31
31
3
27
1
26
3
1
3
21
6
4
13
14
18
305
39
3
Highest AQI (US) recorded in
January89AQI (US)
Lowest AQI (US) recorded in
August59AQI (US)
202466AQI (US)
3
11
2
1
1
1
3
9
30
5
26
19
12
13
16
9
17
4
1
5
18
4
3
1
27
3
61
166
13
4
Highest AQI (US) recorded in
November86AQI (US)
Lowest AQI (US) recorded in
April16AQI (US)
202368AQI (US)
3
11
12
8
14
12
8
Highest AQI (US) recorded in
December71AQI (US)
Lowest AQI (US) recorded in
November36AQI (US)
202263AQI (US)
7
11
11
1
15
6
13
14
4
15
10
5
17
14
11
14
5
15
9
1
93
79
25
1
Highest AQI (US) recorded in
January85AQI (US)
Lowest AQI (US) recorded in
February46AQI (US)
202153AQI (US)
6
14
6
4
6
13
6
3
5
10
10
4
2
9
14
2
1
12
9
2
1
1
13
14
3
26
4
1
31
30
31
17
11
1
1
9
19
3
195
108
34
14
3
Highest AQI (US) recorded in
March124AQI (US)
Lowest AQI (US) recorded in
October1AQI (US)
202070AQI (US)
1
9
2
1
3
15
3
8
7
3
1
24
5
24
7
2
28
1
13
15
1
19
7
3
2
15
11
3
1
9
17
5
71
157
33
4
Highest AQI (US) recorded in
July85AQI (US)
Lowest AQI (US) recorded in
September59AQI (US)
Most & Least Polluted Years Over the Last 7 Years
Most Polluted Year Recorded
2025(Avg.)
72AQI (US)Least Polluted Year Recorded
2021(Avg.)
53AQI (US)Longhua County Environmental Protection Bureau's annual 2026 AQI (US) (64) shows an average percentage change of -1.04% (improved AQI (US)) compared to previous years: 2020 (70), 2021 (53), 2022 (63), 2023 (68), 2024 (66), 2025 (72).
