Country Background
HistoryAQIPM₂.₅PM₁₀COSO₂NO₂O₃

Zichang County Environmental Protection Bureau, Yanan, Shaanxi, 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

Zichang County Environmental Protection Bureau, Yanan, Shaanxi, China

2022
2023
2024
2025
2026
AQI
.
Days

AQI Trends: Highest and Lowest

Highest AQI recorded on
17th Aug 2023
125AQI
Lowest AQI recorded on
3rd Aug 2026
28AQI

Same Day Analysis (17th August):
On this day, AQI across the 5 years varied significantly: 2026 ranks 4th highest AQI at 51 of Moderate air quality, showing improvement over 2025, 2024 and 2023 on the same day.

Day & Night AQI Trend: 16th Aug - 17th Aug 2026

Zichang County Environmental Protection Bureau, Yanan, Shaanxi, China

AQI
Day
Night
.

5 AM16th Aug 2026

7 PM

4 AM17th Aug 2026

Day time
Avg. Highest Time
10AM16th Aug

53AQI

Avg. Lowest Time
5AM16th Aug

23AQI

Night time
Avg. Highest Time
2AM17th Aug

60AQI

Avg. Lowest Time
8PM16th Aug

29AQI

In the last 24 hours,

Zichang County Environmental Protection Bureau's AQI reached its highest point of 60 at 2 AM during the Night, while the lowest point, 23, was recorded at 5 AM during the Day between 16th Aug and 17th Aug 2026.

Day & Night AQI Trend : Jul - Aug 2026

Zichang County Environmental Protection Bureau, Yanan, Shaanxi, 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 2026715 AMAQI
19th Jul 2026676 AMAQI
19th Jul 2026687 AMAQI
19th Jul 2026708 AMAQI
19th Jul 2026709 AMAQI
19th Jul 20266810 AMAQI
19th Jul 20267111 AMAQI
19th Jul 20267012 PMAQI
19th Jul 2026661 PMAQI
19th Jul 2026602 PMAQI
19th Jul 2026553 PMAQI
19th Jul 2026564 PMAQI
19th Jul 2026535 PMAQI
19th Jul 2026546 PMAQI
19th Jul 2026557 PMAQI
19th Jul 2026568 PMAQI
19th Jul 2026569 PMAQI
19th Jul 20265410 PMAQI
19th Jul 20265311 PMAQI
20th Jul 20263112 AMAQI
20th Jul 2026291 AMAQI
20th Jul 2026272 AMAQI
20th Jul 2026253 AMAQI
20th Jul 2026234 AMAQI

25°C19/35°C

20th Jul 2026215 AMAQI
20th Jul 2026256 AMAQI
20th Jul 2026237 AMAQI
20th Jul 2026278 AMAQI
20th Jul 2026319 AMAQI
20th Jul 20263110 AMAQI
20th Jul 20263111 AMAQI
20th Jul 20262912 PMAQI
20th Jul 2026361 PMAQI
20th Jul 2026402 PMAQI
20th Jul 2026403 PMAQI
20th Jul 2026404 PMAQI
20th Jul 2026385 PMAQI
20th Jul 2026506 PMAQI
20th Jul 2026557 PMAQI
20th Jul 2026568 PMAQI
20th Jul 2026549 PMAQI
20th Jul 20266010 PMAQI
20th Jul 20266811 PMAQI
21st Jul 20268112 AMAQI
21st Jul 2026751 AMAQI
21st Jul 2026702 AMAQI
21st Jul 2026683 AMAQI
21st Jul 2026664 AMAQI

27°C20/34°C

21st Jul 2026645 AMAQI
21st Jul 2026656 AMAQI
21st Jul 2026567 AMAQI
21st Jul 2026608 AMAQI
21st Jul 2026679 AMAQI
21st Jul 20266010 AMAQI
21st Jul 20265612 PMAQI
21st Jul 2026521 PMAQI
21st Jul 2026512 PMAQI
21st Jul 2026523 PMAQI
21st Jul 2026534 PMAQI
21st Jul 2026555 PMAQI
21st Jul 2026846 PMAQI
21st Jul 2026517 PMAQI
21st Jul 2026528 PMAQI
21st Jul 2026549 PMAQI
21st Jul 20265310 PMAQI
21st Jul 20265411 PMAQI
22nd Jul 20265512 AMAQI
22nd Jul 2026551 AMAQI
22nd Jul 2026642 AMAQI
22nd Jul 2026583 AMAQI
22nd Jul 2026544 AMAQI

25°C22/30°C

22nd Jul 2026565 AMAQI
22nd Jul 2026556 AMAQI
22nd Jul 2026577 AMAQI
22nd Jul 2026668 AMAQI
22nd Jul 2026649 AMAQI
22nd Jul 20266210 AMAQI
22nd Jul 20265411 AMAQI
22nd Jul 20264412 PMAQI
22nd Jul 2026291 PMAQI
22nd Jul 2026312 PMAQI
22nd Jul 2026293 PMAQI
22nd Jul 2026294 PMAQI
22nd Jul 2026255 PMAQI
22nd Jul 2026276 PMAQI
22nd Jul 2026297 PMAQI
22nd Jul 2026298 PMAQI
22nd Jul 2026369 PMAQI
22nd Jul 20264610 PMAQI
22nd Jul 20265811 PMAQI
23rd Jul 20266912 AMAQI
23rd Jul 2026651 AMAQI
23rd Jul 2026472 AMAQI
23rd Jul 2026563 AMAQI
23rd Jul 2026624 AMAQI

22°C16/32°C

23rd Jul 2026605 AMAQI
23rd Jul 2026566 AMAQI
23rd Jul 2026567 AMAQI
23rd Jul 2026518 AMAQI
23rd Jul 2026789 AMAQI
23rd Jul 20267110 AMAQI
23rd Jul 20266011 AMAQI
23rd Jul 20265912 PMAQI
23rd Jul 2026531 PMAQI
23rd Jul 2026462 PMAQI
23rd Jul 2026423 PMAQI
23rd Jul 2026384 PMAQI
23rd Jul 2026365 PMAQI
23rd Jul 2026386 PMAQI
23rd Jul 2026447 PMAQI
23rd Jul 2026548 PMAQI
23rd Jul 2026589 PMAQI
23rd Jul 20266710 PMAQI
23rd Jul 20267811 PMAQI
24th Jul 20267512 AMAQI
24th Jul 2026701 AMAQI
24th Jul 2026692 AMAQI
24th Jul 2026743 AMAQI
24th Jul 2026784 AMAQI

24°C18/32°C

24th Jul 2026685 AMAQI
24th Jul 2026406 AMAQI
24th Jul 2026367 AMAQI
24th Jul 2026388 AMAQI
24th Jul 2026429 AMAQI
24th Jul 20264210 AMAQI
24th Jul 20263811 AMAQI
24th Jul 20264812 PMAQI
24th Jul 2026481 PMAQI
24th Jul 2026532 PMAQI
24th Jul 2026513 PMAQI
24th Jul 2026464 PMAQI
24th Jul 2026405 PMAQI
24th Jul 2026426 PMAQI
24th Jul 2026427 PMAQI
24th Jul 2026468 PMAQI
24th Jul 2026519 PMAQI
24th Jul 20265710 PMAQI
24th Jul 20265611 PMAQI
25th Jul 20266212 AMAQI
25th Jul 2026681 AMAQI
25th Jul 2026592 AMAQI
25th Jul 2026643 AMAQI
25th Jul 2026664 AMAQI

26°C23/31°C

25th Jul 2026665 AMAQI
25th Jul 2026716 AMAQI
25th Jul 2026767 AMAQI
25th Jul 2026838 AMAQI
25th Jul 2026959 AMAQI
25th Jul 20268710 AMAQI
25th Jul 20267411 AMAQI
25th Jul 20267012 PMAQI
25th Jul 2026701 PMAQI
25th Jul 2026652 PMAQI
25th Jul 2026603 PMAQI
25th Jul 2026654 PMAQI
25th Jul 2026575 PMAQI
25th Jul 2026566 PMAQI
25th Jul 2026637 PMAQI
25th Jul 2026658 PMAQI
25th Jul 2026669 PMAQI
25th Jul 20266610 PMAQI
25th Jul 20267111 PMAQI
26th Jul 20267012 AMAQI
26th Jul 2026741 AMAQI
26th Jul 2026802 AMAQI
26th Jul 2026803 AMAQI
26th Jul 2026764 AMAQI

27°C22/32°C

26th Jul 2026835 AMAQI
26th Jul 2026786 AMAQI
26th Jul 2026897 AMAQI
26th Jul 2026858 AMAQI
26th Jul 2026789 AMAQI
26th Jul 20267810 AMAQI
26th Jul 20266911 AMAQI
26th Jul 20266412 PMAQI
26th Jul 2026591 PMAQI
26th Jul 2026552 PMAQI
26th Jul 2026563 PMAQI
26th Jul 2026534 PMAQI
26th Jul 2026485 PMAQI
26th Jul 2026486 PMAQI
26th Jul 2026447 PMAQI
26th Jul 2026508 PMAQI
26th Jul 2026539 PMAQI
26th Jul 20265810 PMAQI
26th Jul 20266311 PMAQI
27th Jul 20266612 AMAQI
27th Jul 2026651 AMAQI
27th Jul 2026562 AMAQI
27th Jul 2026303 AMAQI
27th Jul 2026214 AMAQI

26°C22/31°C

27th Jul 2026215 AMAQI
27th Jul 2026216 AMAQI
27th Jul 2026517 AMAQI
27th Jul 2026368 AMAQI
27th Jul 2026259 AMAQI
27th Jul 20262910 AMAQI
27th Jul 20263611 AMAQI
27th Jul 20263312 PMAQI
27th Jul 2026361 PMAQI
27th Jul 2026362 PMAQI
27th Jul 2026383 PMAQI
27th Jul 2026314 PMAQI
27th Jul 2026335 PMAQI
27th Jul 2026406 PMAQI
27th Jul 2026387 PMAQI
27th Jul 2026298 PMAQI
27th Jul 2026339 PMAQI
27th Jul 20263610 PMAQI
27th Jul 20263611 PMAQI
28th Jul 20263412 AMAQI
28th Jul 2026381 AMAQI
28th Jul 2026422 AMAQI
28th Jul 2026433 AMAQI
28th Jul 2026414 AMAQI

25°C21/30°C

28th Jul 2026405 AMAQI
28th Jul 2026466 AMAQI
28th Jul 2026497 AMAQI
28th Jul 2026608 AMAQI
28th Jul 2026669 AMAQI
28th Jul 20267610 AMAQI
28th Jul 20266811 AMAQI
28th Jul 20265312 PMAQI
28th Jul 2026481 PMAQI
28th Jul 2026422 PMAQI
28th Jul 2026363 PMAQI
28th Jul 2026314 PMAQI
28th Jul 2026275 PMAQI
28th Jul 2026256 PMAQI
28th Jul 2026257 PMAQI
28th Jul 2026318 PMAQI
28th Jul 2026339 PMAQI
28th Jul 20264210 PMAQI
28th Jul 20264611 PMAQI
29th Jul 20265212 AMAQI
29th Jul 2026521 AMAQI
29th Jul 2026502 AMAQI
29th Jul 2026483 AMAQI
29th Jul 2026504 AMAQI

25°C21/29°C

29th Jul 2026515 AMAQI
29th Jul 2026566 AMAQI
29th Jul 2026767 AMAQI
29th Jul 2026678 AMAQI
29th Jul 2026729 AMAQI
29th Jul 20268010 AMAQI
29th Jul 20266411 AMAQI
29th Jul 20264412 PMAQI
29th Jul 2026251 PMAQI
29th Jul 2026272 PMAQI
29th Jul 2026293 PMAQI
29th Jul 2026294 PMAQI
29th Jul 2026255 PMAQI
29th Jul 2026236 PMAQI
29th Jul 2026257 PMAQI
29th Jul 2026298 PMAQI
29th Jul 2026319 PMAQI
29th Jul 20264010 PMAQI
29th Jul 20264211 PMAQI
30th Jul 20264712 AMAQI
30th Jul 2026511 AMAQI
30th Jul 2026472 AMAQI
30th Jul 2026423 AMAQI
30th Jul 2026574 AMAQI

25°C21/29°C

30th Jul 2026535 AMAQI
30th Jul 2026586 AMAQI
30th Jul 2026567 AMAQI
30th Jul 2026608 AMAQI
30th Jul 2026659 AMAQI
30th Jul 20266410 AMAQI
30th Jul 20265111 AMAQI
30th Jul 20264012 PMAQI
30th Jul 2026361 PMAQI
30th Jul 2026292 PMAQI
30th Jul 2026273 PMAQI
30th Jul 2026274 PMAQI
30th Jul 2026315 PMAQI
30th Jul 2026406 PMAQI
30th Jul 2026427 PMAQI
30th Jul 2026448 PMAQI
30th Jul 2026349 PMAQI
30th Jul 20262310 PMAQI
30th Jul 20262311 PMAQI
31st Jul 20262712 AMAQI
31st Jul 2026251 AMAQI
31st Jul 2026362 AMAQI
31st Jul 2026273 AMAQI
31st Jul 2026274 AMAQI

27°C22/31°C

31st Jul 2026275 AMAQI
31st Jul 2026276 AMAQI
31st Jul 2026277 AMAQI
31st Jul 2026258 AMAQI
31st Jul 2026279 AMAQI
31st Jul 20263310 AMAQI
31st Jul 20263811 AMAQI
31st Jul 20262912 PMAQI
31st Jul 2026211 PMAQI
31st Jul 2026272 PMAQI
31st Jul 2026273 PMAQI
31st Jul 2026274 PMAQI
31st Jul 2026295 PMAQI
31st Jul 2026306 PMAQI
31st Jul 2026217 PMAQI
31st Jul 2026238 PMAQI
31st Jul 2026319 PMAQI
31st Jul 20263810 PMAQI
31st Jul 20263811 PMAQI
1st Aug 20263812 AMAQI
1st Aug 2026401 AMAQI
1st Aug 2026382 AMAQI
1st Aug 2026383 AMAQI
1st Aug 2026364 AMAQI

25°C22/30°C

1st Aug 2026295 AMAQI
1st Aug 2026276 AMAQI
1st Aug 2026487 AMAQI
1st Aug 2026568 AMAQI
1st Aug 2026589 AMAQI
1st Aug 20265210 AMAQI
1st Aug 20265411 AMAQI
1st Aug 20266312 PMAQI
1st Aug 2026441 PMAQI
1st Aug 2026422 PMAQI
1st Aug 2026543 PMAQI
1st Aug 2026534 PMAQI
1st Aug 2026515 PMAQI
1st Aug 2026466 PMAQI
1st Aug 2026497 PMAQI
1st Aug 2026518 PMAQI
1st Aug 2026569 PMAQI
1st Aug 20265610 PMAQI
1st Aug 20265711 PMAQI
2nd Aug 20266212 AMAQI
2nd Aug 2026601 AMAQI
2nd Aug 2026602 AMAQI
2nd Aug 2026583 AMAQI
2nd Aug 2026544 AMAQI

25°C21/31°C

2nd Aug 2026485 AMAQI
2nd Aug 2026426 AMAQI
2nd Aug 2026367 AMAQI
2nd Aug 2026388 AMAQI
2nd Aug 2026369 AMAQI
2nd Aug 20263610 AMAQI
2nd Aug 20262711 AMAQI
2nd Aug 20262712 PMAQI
2nd Aug 2026331 PMAQI
2nd Aug 2026292 PMAQI
2nd Aug 2026273 PMAQI
2nd Aug 2026234 PMAQI
2nd Aug 2026305 PMAQI
2nd Aug 2026276 PMAQI
2nd Aug 2026237 PMAQI
2nd Aug 2026258 PMAQI
2nd Aug 2026259 PMAQI
2nd Aug 20262310 PMAQI
2nd Aug 20262311 PMAQI
3rd Aug 20262312 AMAQI
3rd Aug 2026211 AMAQI
3rd Aug 2026232 AMAQI
3rd Aug 2026213 AMAQI
3rd Aug 2026254 AMAQI

21°C17/24°C

3rd Aug 2026215 AMAQI
3rd Aug 2026236 AMAQI
3rd Aug 2026297 AMAQI
3rd Aug 2026298 AMAQI
3rd Aug 2026259 AMAQI
3rd Aug 20263410 AMAQI
3rd Aug 20263411 AMAQI
3rd Aug 20264012 PMAQI
3rd Aug 2026341 PMAQI
3rd Aug 2026252 PMAQI
3rd Aug 2026293 PMAQI
3rd Aug 2026314 PMAQI
3rd Aug 2026345 PMAQI
3rd Aug 2026296 PMAQI
3rd Aug 2026277 PMAQI
3rd Aug 2026258 PMAQI
3rd Aug 2026239 PMAQI
3rd Aug 20262710 PMAQI
3rd Aug 20263411 PMAQI
4th Aug 20264712 AMAQI
4th Aug 2026561 AMAQI
4th Aug 2026382 AMAQI
4th Aug 2026383 AMAQI
4th Aug 2026334 AMAQI

20°C17/24°C

4th Aug 2026285 AMAQI
4th Aug 2026256 AMAQI
4th Aug 2026297 AMAQI
4th Aug 2026338 AMAQI
4th Aug 2026319 AMAQI
4th Aug 20263310 AMAQI
4th Aug 20263111 AMAQI
4th Aug 20264012 PMAQI
4th Aug 2026361 PMAQI
4th Aug 2026402 PMAQI
4th Aug 2026333 PMAQI
4th Aug 2026254 PMAQI
4th Aug 2026235 PMAQI
4th Aug 2026276 PMAQI
4th Aug 2026317 PMAQI
4th Aug 2026328 PMAQI
4th Aug 2026299 PMAQI
4th Aug 20262410 PMAQI
4th Aug 20263611 PMAQI
5th Aug 20263412 AMAQI
5th Aug 2026361 AMAQI
5th Aug 2026282 AMAQI
5th Aug 2026333 AMAQI
5th Aug 2026244 AMAQI

21°C17/26°C

5th Aug 2026255 AMAQI
5th Aug 2026256 AMAQI
5th Aug 2026317 AMAQI
5th Aug 2026268 AMAQI
5th Aug 2026299 AMAQI
5th Aug 20262110 AMAQI
5th Aug 20263311 AMAQI
5th Aug 20263112 PMAQI
5th Aug 2026211 PMAQI
5th Aug 2026262 PMAQI
5th Aug 2026403 PMAQI
5th Aug 2026254 PMAQI
5th Aug 2026225 PMAQI
5th Aug 2026426 PMAQI
5th Aug 2026317 PMAQI
5th Aug 2026368 PMAQI
5th Aug 2026309 PMAQI
5th Aug 20262710 PMAQI
5th Aug 20264011 PMAQI
6th Aug 20263312 AMAQI
6th Aug 2026401 AMAQI
6th Aug 2026362 AMAQI
6th Aug 2026383 AMAQI
6th Aug 2026404 AMAQI

19°C19/20°C

6th Aug 2026505 AMAQI
6th Aug 2026486 AMAQI
6th Aug 2026557 AMAQI
6th Aug 2026558 AMAQI
6th Aug 2026539 AMAQI
6th Aug 20265210 AMAQI
6th Aug 20265411 AMAQI
6th Aug 20265612 PMAQI
6th Aug 2026581 PMAQI
6th Aug 2026572 PMAQI
6th Aug 2026553 PMAQI
6th Aug 2026484 PMAQI
6th Aug 2026445 PMAQI
6th Aug 2026526 PMAQI
6th Aug 2026547 PMAQI
6th Aug 2026568 PMAQI
6th Aug 2026569 PMAQI
6th Aug 20265610 PMAQI
6th Aug 20263611 PMAQI
7th Aug 20264712 AMAQI
7th Aug 2026541 AMAQI
7th Aug 2026522 AMAQI
7th Aug 2026553 AMAQI
7th Aug 2026564 AMAQI

21°C18/26°C

7th Aug 2026565 AMAQI
7th Aug 2026596 AMAQI
7th Aug 2026627 AMAQI
7th Aug 2026638 AMAQI
7th Aug 2026649 AMAQI
7th Aug 20266410 AMAQI
7th Aug 20267011 AMAQI
7th Aug 20266912 PMAQI
7th Aug 2026601 PMAQI
7th Aug 2026602 PMAQI
7th Aug 2026593 PMAQI
7th Aug 2026544 PMAQI
7th Aug 2026545 PMAQI
7th Aug 2026526 PMAQI
7th Aug 2026517 PMAQI
7th Aug 2026518 PMAQI
7th Aug 2026529 PMAQI
7th Aug 20265310 PMAQI
7th Aug 20265511 PMAQI
8th Aug 20265512 AMAQI
8th Aug 2026621 AMAQI
8th Aug 2026662 AMAQI
8th Aug 2026623 AMAQI
8th Aug 2026624 AMAQI

24°C19/30°C

8th Aug 2026595 AMAQI
8th Aug 2026666 AMAQI
8th Aug 2026677 AMAQI
8th Aug 2026678 AMAQI
8th Aug 2026729 AMAQI
8th Aug 20267610 AMAQI
8th Aug 20267411 AMAQI
8th Aug 20267112 PMAQI
8th Aug 2026671 PMAQI
8th Aug 2026642 PMAQI
8th Aug 2026693 PMAQI
8th Aug 2026624 PMAQI
8th Aug 2026575 PMAQI
8th Aug 2026606 PMAQI
8th Aug 2026607 PMAQI
8th Aug 2026648 PMAQI
8th Aug 2026699 PMAQI
8th Aug 20267610 PMAQI
8th Aug 20268711 PMAQI
9th Aug 20268012 AMAQI
9th Aug 2026781 AMAQI
9th Aug 2026852 AMAQI
9th Aug 2026803 AMAQI
9th Aug 2026804 AMAQI

25°C21/30°C

9th Aug 2026845 AMAQI
9th Aug 2026826 AMAQI
9th Aug 2026837 AMAQI
9th Aug 2026878 AMAQI
9th Aug 2026869 AMAQI
9th Aug 20268010 AMAQI
9th Aug 20267211 AMAQI
9th Aug 20266212 PMAQI
9th Aug 2026541 PMAQI
9th Aug 2026532 PMAQI
9th Aug 2026483 PMAQI
9th Aug 2026424 PMAQI
9th Aug 2026445 PMAQI
9th Aug 2026406 PMAQI
9th Aug 2026447 PMAQI
9th Aug 2026508 PMAQI
9th Aug 2026569 PMAQI
9th Aug 20266210 PMAQI
9th Aug 20266511 PMAQI
10th Aug 20266712 AMAQI
10th Aug 2026571 AMAQI
10th Aug 2026582 AMAQI
10th Aug 2026563 AMAQI
10th Aug 2026604 AMAQI

25°C21/30°C

10th Aug 2026625 AMAQI
10th Aug 2026566 AMAQI
10th Aug 2026667 AMAQI
10th Aug 2026738 AMAQI
10th Aug 2026769 AMAQI
10th Aug 20267610 AMAQI
10th Aug 20266911 AMAQI
10th Aug 20266212 PMAQI
10th Aug 2026541 PMAQI
10th Aug 2026462 PMAQI
10th Aug 2026443 PMAQI
10th Aug 2026364 PMAQI
10th Aug 2026365 PMAQI
10th Aug 2026386 PMAQI
10th Aug 2026407 PMAQI
10th Aug 2026488 PMAQI
10th Aug 2026519 PMAQI
10th Aug 20265910 PMAQI
10th Aug 20266811 PMAQI
11th Aug 20267312 AMAQI
11th Aug 2026701 AMAQI
11th Aug 2026722 AMAQI
11th Aug 2026753 AMAQI
11th Aug 2026764 AMAQI

25°C20/30°C

11th Aug 2026785 AMAQI
11th Aug 2026936 AMAQI
11th Aug 2026927 AMAQI
11th Aug 2026928 AMAQI
11th Aug 2026929 AMAQI
11th Aug 20268610 AMAQI
11th Aug 20267011 AMAQI
11th Aug 20265612 PMAQI
11th Aug 2026511 PMAQI
11th Aug 2026462 PMAQI
11th Aug 2026403 PMAQI
11th Aug 2026364 PMAQI
11th Aug 2026365 PMAQI
11th Aug 2026406 PMAQI
11th Aug 2026467 PMAQI
11th Aug 2026468 PMAQI
11th Aug 2026509 PMAQI
11th Aug 20265310 PMAQI
11th Aug 20265811 PMAQI
12th Aug 20265512 AMAQI
12th Aug 2026541 AMAQI
12th Aug 2026532 AMAQI
12th Aug 2026493 AMAQI
12th Aug 2026404 AMAQI

25°C20/30°C

12th Aug 2026405 AMAQI
12th Aug 2026386 AMAQI
12th Aug 2026367 AMAQI
12th Aug 2026388 AMAQI
12th Aug 2026429 AMAQI
12th Aug 20264610 AMAQI
12th Aug 20263611 AMAQI
12th Aug 20263312 PMAQI
12th Aug 2026421 PMAQI
12th Aug 2026422 PMAQI
12th Aug 2026403 PMAQI
12th Aug 2026424 PMAQI
12th Aug 2026335 PMAQI
12th Aug 2026296 PMAQI
12th Aug 2026257 PMAQI
12th Aug 2026268 PMAQI
12th Aug 2026369 PMAQI
12th Aug 20263810 PMAQI
12th Aug 20265111 PMAQI
13th Aug 20264412 AMAQI
13th Aug 2026381 AMAQI
13th Aug 2026382 AMAQI
13th Aug 2026363 AMAQI
13th Aug 2026404 AMAQI

23°C18/28°C

13th Aug 2026445 AMAQI
13th Aug 2026406 AMAQI
13th Aug 2026427 AMAQI
13th Aug 2026428 AMAQI
13th Aug 2026539 AMAQI
13th Aug 20265210 AMAQI
13th Aug 20266311 AMAQI
13th Aug 20265812 PMAQI
13th Aug 2026531 PMAQI
13th Aug 2026442 PMAQI
13th Aug 2026403 PMAQI
13th Aug 2026294 PMAQI
13th Aug 2026255 PMAQI
13th Aug 2026256 PMAQI
13th Aug 2026297 PMAQI
13th Aug 2026298 PMAQI
13th Aug 2026339 PMAQI
13th Aug 20263610 PMAQI
13th Aug 20263011 PMAQI
14th Aug 20264812 AMAQI
14th Aug 2026581 AMAQI
14th Aug 2026552 AMAQI
14th Aug 2026463 AMAQI
14th Aug 2026534 AMAQI

23°C18/29°C

14th Aug 2026545 AMAQI
14th Aug 2026546 AMAQI
14th Aug 2026527 AMAQI
14th Aug 2026568 AMAQI
14th Aug 2026589 AMAQI
14th Aug 20267810 AMAQI
14th Aug 20267311 AMAQI
14th Aug 20266412 PMAQI
14th Aug 2026551 PMAQI
14th Aug 2026482 PMAQI
14th Aug 2026463 PMAQI
14th Aug 2026384 PMAQI
14th Aug 2026365 PMAQI
14th Aug 2026316 PMAQI
14th Aug 2026337 PMAQI
14th Aug 2026298 PMAQI
14th Aug 2026389 PMAQI
14th Aug 20264910 PMAQI
14th Aug 20265211 PMAQI
15th Aug 20264412 AMAQI
15th Aug 2026501 AMAQI
15th Aug 2026532 AMAQI
15th Aug 2026563 AMAQI
15th Aug 2026564 AMAQI

25°C20/30°C

15th Aug 2026525 AMAQI
15th Aug 2026546 AMAQI
15th Aug 2026587 AMAQI
15th Aug 2026678 AMAQI
15th Aug 2026669 AMAQI
15th Aug 20267810 AMAQI
15th Aug 20267211 AMAQI
15th Aug 20264412 PMAQI
15th Aug 2026401 PMAQI
15th Aug 2026292 PMAQI
15th Aug 2026333 PMAQI
15th Aug 2026274 PMAQI
15th Aug 2026255 PMAQI
15th Aug 2026256 PMAQI
15th Aug 2026277 PMAQI
15th Aug 2026298 PMAQI
15th Aug 2026369 PMAQI
15th Aug 20263410 PMAQI
15th Aug 20262711 PMAQI
16th Aug 20262512 AMAQI
16th Aug 2026261 AMAQI
16th Aug 2026252 AMAQI
16th Aug 2026273 AMAQI
16th Aug 2026274 AMAQI

23°C19/31°C

16th Aug 2026235 AMAQI
16th Aug 2026276 AMAQI
16th Aug 2026277 AMAQI
16th Aug 2026368 AMAQI
16th Aug 2026509 AMAQI
16th Aug 20265310 AMAQI
16th Aug 20264611 AMAQI
16th Aug 20264612 PMAQI
16th Aug 2026511 PMAQI
16th Aug 2026442 PMAQI
16th Aug 2026403 PMAQI
16th Aug 2026364 PMAQI
16th Aug 2026315 PMAQI
16th Aug 2026276 PMAQI
16th Aug 2026317 PMAQI
16th Aug 2026298 PMAQI
16th Aug 2026389 PMAQI
16th Aug 20264410 PMAQI
16th Aug 20265411 PMAQI
17th Aug 20265312 AMAQI
17th Aug 2026561 AMAQI
17th Aug 2026602 AMAQI
17th Aug 2026603 AMAQI
17th Aug 2026554 AMAQI

24°C18/30°C

17th Aug 2026515 AMAQI
5 AM
17th Aug 2026506 AMAQI
17th Aug 2026527 AMAQI
17th Aug 2026568 AMAQI
17th Aug 2026649 AMAQI
17th Aug 20267410 AMAQI
17th Aug 20265811 AMAQI
17th Aug 20265112 PMAQI
12 PM
17th Aug 2026581 PMAQI
17th Aug 2026522 PMAQI
17th Aug 2026383 PMAQI
17th Aug 2026384 PMAQI
17th Aug 2026425 PMAQI
17th Aug 2026386 PMAQI
17th Aug 2026387 PMAQI
7 PM
17th Aug 2026428 PMAQI
17th Aug 2026479 PMAQI
17th Aug 20264610 PMAQI
17th Aug 20265111 PMAQI
12 AM
4 AM

11°C10/13°C

Day time
Avg. Highest Time
9 AM - 10 AM

59AQI

2 hours / Day
60 hours / Month
Avg. Lowest Time
5 PM

37AQI

1 hours / Day
30 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 9 AM to 10 AM (Avg. 59), while the lowest AQI was between 5 PM to 5 PM (Avg. 37).
Night time
Avg. Highest Time
12 AM - 2 AM

53AQI

3 hours / Day
90 hours / Month
Avg. Lowest Time
8 PM

41AQI

1 hours / Day
30 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 12 AM to 2 AM (Avg. 53), while the lowest AQI was between 8 PM to 8 PM (Avg. 41).

2026 Days Vs Air Quality

Zichang County Environmental Protection Bureau, Yanan, Shaanxi, China

2026

27%

61

58%

133

14%

33

0.8%

2

Total number of days with different AQI categories in last 229 days in 2026 (136 days remaining)

Good
61 Days
Moderate
133 Days
Poor
33 Days
Unhealthy
2 Days
Severe
0 Days
Hazardous
0 Days

Under WHO’s Safe Air Quality Limits: 27%

Health Risk Level:

Very high

In 2026, 27% of 229 days were within WHO’s safe air quality limits. The risk of health issues is Very high, including respiratory issues, heart disease, and stress, particularly affecting vulnerable groups.

Annual Air Quality Insights

Zichang County Environmental Protection Bureau, Yanan, Shaanxi, 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
123AQI (US)
2nd January 2026
100AQI (US)
3rd January 2026
102AQI (US)
4th January 2026
109AQI (US)
5th January 2026
86AQI (US)
6th January 2026
71AQI (US)
7th January 2026
94AQI (US)
8th January 2026
90AQI (US)
9th January 2026
82AQI (US)
10th January 2026
75AQI (US)
11th January 2026
71AQI (US)
12th January 2026
82AQI (US)
13th January 2026
89AQI (US)
14th January 2026
102AQI (US)
15th January 2026
112AQI (US)
16th January 2026
85AQI (US)
17th January 2026
125AQI (US)
18th January 2026
87AQI (US)
19th January 2026
34AQI (US)
20th January 2026
50AQI (US)
21st January 2026
77AQI (US)
22nd January 2026
116AQI (US)
23rd January 2026
118AQI (US)
24th January 2026
120AQI (US)
25th January 2026
141AQI (US)
26th January 2026
112AQI (US)
27th January 2026
117AQI (US)
28th January 2026
125AQI (US)
29th January 2026
142AQI (US)
30th January 2026
153AQI (US)
31st January 2026
144AQI (US)
1st February 2026
99AQI (US)
2nd February 2026
70AQI (US)
3rd February 2026
93AQI (US)
4th February 2026
105AQI (US)
5th February 2026
92AQI (US)
6th February 2026
78AQI (US)
7th February 2026
41AQI (US)
8th February 2026
59AQI (US)
9th February 2026
85AQI (US)
10th February 2026
87AQI (US)
11th February 2026
98AQI (US)
12th February 2026
95AQI (US)
13th February 2026
92AQI (US)
14th February 2026
87AQI (US)
15th February 2026
54AQI (US)
16th February 2026
68AQI (US)
17th February 2026
112AQI (US)
18th February 2026
81AQI (US)
19th February 2026
78AQI (US)
20th February 2026
78AQI (US)
21st February 2026
90AQI (US)
22nd February 2026
118AQI (US)
23rd February 2026
156AQI (US)
24th February 2026
135AQI (US)
25th February 2026
128AQI (US)
26th February 2026
122AQI (US)
27th February 2026
132AQI (US)
28th February 2026
87AQI (US)
1st March 2026
67AQI (US)
2nd March 2026
48AQI (US)
3rd March 2026
62AQI (US)
4th March 2026
117AQI (US)
5th March 2026
67AQI (US)
6th March 2026
43AQI (US)
7th March 2026
82AQI (US)
8th March 2026
120AQI (US)
9th March 2026
101AQI (US)
10th March 2026
115AQI (US)
11th March 2026
70AQI (US)
12th March 2026
118AQI (US)
13th March 2026
138AQI (US)
14th March 2026
91AQI (US)
15th March 2026
70AQI (US)
16th March 2026
78AQI (US)
17th March 2026
96AQI (US)
18th March 2026
68AQI (US)
19th March 2026
75AQI (US)
20th March 2026
85AQI (US)
21st March 2026
101AQI (US)
22nd March 2026
98AQI (US)
23rd March 2026
94AQI (US)
24th March 2026
101AQI (US)
25th March 2026
84AQI (US)
26th March 2026
91AQI (US)
27th March 2026
91AQI (US)
28th March 2026
80AQI (US)
29th March 2026
70AQI (US)
30th March 2026
77AQI (US)
31st March 2026
57AQI (US)
1st April 2026
59AQI (US)
2nd April 2026
68AQI (US)
3rd April 2026
79AQI (US)
4th April 2026
66AQI (US)
5th April 2026
81AQI (US)
6th April 2026
64AQI (US)
7th April 2026
66AQI (US)
8th April 2026
104AQI (US)
9th April 2026
75AQI (US)
10th April 2026
57AQI (US)
11th April 2026
61AQI (US)
12th April 2026
59AQI (US)
13th April 2026
63AQI (US)
14th April 2026
75AQI (US)
15th April 2026
78AQI (US)
16th April 2026
59AQI (US)
17th April 2026
49AQI (US)
18th April 2026
62AQI (US)
19th April 2026
78AQI (US)
20th April 2026
70AQI (US)
21st April 2026
62AQI (US)
22nd April 2026
64AQI (US)
23rd April 2026
67AQI (US)
24th April 2026
74AQI (US)
25th April 2026
71AQI (US)
26th April 2026
74AQI (US)
27th April 2026
72AQI (US)
28th April 2026
63AQI (US)
29th April 2026
59AQI (US)
30th April 2026
70AQI (US)
1st May 2026
71AQI (US)
2nd May 2026
46AQI (US)
3rd May 2026
52AQI (US)
4th May 2026
58AQI (US)
5th May 2026
62AQI (US)
6th May 2026
75AQI (US)
7th May 2026
51AQI (US)
8th May 2026
54AQI (US)
9th May 2026
61AQI (US)
10th May 2026
84AQI (US)
11th May 2026
90AQI (US)
12th May 2026
105AQI (US)
13th May 2026
91AQI (US)
14th May 2026
64AQI (US)
15th May 2026
89AQI (US)
16th May 2026
78AQI (US)
17th May 2026
79AQI (US)
18th May 2026
77AQI (US)
19th May 2026
76AQI (US)
20th May 2026
89AQI (US)
21st May 2026
98AQI (US)
22nd May 2026
101AQI (US)
23rd May 2026
90AQI (US)
24th May 2026
82AQI (US)
25th May 2026
83AQI (US)
26th May 2026
57AQI (US)
27th May 2026
64AQI (US)
28th May 2026
41AQI (US)
29th May 2026
39AQI (US)
30th May 2026
46AQI (US)
31st May 2026
57AQI (US)
1st June 2026
62AQI (US)
2nd June 2026
65AQI (US)
3rd June 2026
69AQI (US)
4th June 2026
49AQI (US)
5th June 2026
41AQI (US)
6th June 2026
42AQI (US)
7th June 2026
31AQI (US)
8th June 2026
44AQI (US)
9th June 2026
33AQI (US)
10th June 2026
31AQI (US)
11th June 2026
40AQI (US)
12th June 2026
47AQI (US)
13th June 2026
39AQI (US)
14th June 2026
31AQI (US)
15th June 2026
50AQI (US)
16th June 2026
66AQI (US)
17th June 2026
67AQI (US)
18th June 2026
66AQI (US)
19th June 2026
34AQI (US)
20th June 2026
37AQI (US)
21st June 2026
44AQI (US)
22nd June 2026
36AQI (US)
23rd June 2026
37AQI (US)
24th June 2026
41AQI (US)
25th June 2026
50AQI (US)
26th June 2026
42AQI (US)
27th June 2026
59AQI (US)
28th June 2026
54AQI (US)
29th June 2026
59AQI (US)
30th June 2026
49AQI (US)
1st July 2026
39AQI (US)
2nd July 2026
44AQI (US)
3rd July 2026
48AQI (US)
4th July 2026
38AQI (US)
5th July 2026
48AQI (US)
6th July 2026
44AQI (US)
7th July 2026
44AQI (US)
8th July 2026
60AQI (US)
9th July 2026
62AQI (US)
10th July 2026
65AQI (US)
11th July 2026
23AQI (US)
12th July 2026
39AQI (US)
13th July 2026
46AQI (US)
14th July 2026
53AQI (US)
15th July 2026
52AQI (US)
16th July 2026
44AQI (US)
17th July 2026
34AQI (US)
18th July 2026
55AQI (US)
19th July 2026
64AQI (US)
20th July 2026
37AQI (US)
21st July 2026
61AQI (US)
22nd July 2026
46AQI (US)
23rd July 2026
56AQI (US)
24th July 2026
52AQI (US)
25th July 2026
69AQI (US)
26th July 2026
66AQI (US)
27th July 2026
36AQI (US)
28th July 2026
43AQI (US)
29th July 2026
45AQI (US)
30th July 2026
44AQI (US)
31st July 2026
29AQI (US)
1st August 2026
47AQI (US)
2nd August 2026
36AQI (US)
3rd August 2026
28AQI (US)
4th August 2026
33AQI (US)
5th August 2026
30AQI (US)
6th August 2026
49AQI (US)
7th August 2026
57AQI (US)
8th August 2026
66AQI (US)
9th August 2026
67AQI (US)
10th August 2026
57AQI (US)
11th August 2026
64AQI (US)
12th August 2026
40AQI (US)
13th August 2026
40AQI (US)
14th August 2026
50AQI (US)
15th August 2026
45AQI (US)
16th August 2026
36AQI (US)
17th August 2026
51AQI (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

101AQI (US)

94AQI (US)

86AQI (US)

68AQI (US)

71AQI (US)

47AQI (US)

48AQI (US)

47AQI (US)

No. of days

Jan.Feb.Mar.Apr.MayJun.Jul.Aug.Sep.Oct.Nov.Dec.Total Days

202671AQI (US)

2
13
15
1
1
19
7
1
2
21
8
1
28
1
4
25
2
21
9
19
12
11
6
61
133
33
2

Highest AQI (US) recorded in

January

101AQI (US)

Lowest AQI (US) recorded in

August

47AQI (US)

202585AQI (US)

15
15
1
2
24
2
24
1
2
1
3
13
14
2
1
19
8
3
1
2
28
2
29
4
27
4
26
1
30
1
16
12
1
14
17
16
265
69
9
3
3

Highest AQI (US) recorded in

March

117AQI (US)

Lowest AQI (US) recorded in

August

57AQI (US)

202468AQI (US)

22
3
4
3
1
5
1
5
1
14
30
2
29
9
22
5
22
2
11
19
1
9
19
2
26
5
39
217
16

Highest AQI (US) recorded in

February

96AQI (US)

Lowest AQI (US) recorded in

August

56AQI (US)

202397AQI (US)

2
7
10
11
7
12
3
1
1
1
3
1
2
1
5
1
2
12
1
25
18
1
1
1
1
6
7
2
3
13
13
1
11
97
46
20
1

Highest AQI (US) recorded in

March

202AQI (US)

Lowest AQI (US) recorded in

October

47AQI (US)

202287AQI (US)

14
6
1
13
15
2
1
14
8
1
1
27
3
2
28
8
13
1
3
25
3
21
6
1
17
12
1
13
16
2
17
186
66
7
2

Highest AQI (US) recorded in

March

113AQI (US)

Lowest AQI (US) recorded in

August

58AQI (US)

2020103AQI (US)

4
7
2
16
4
1
1
6
1
1
1
26
11
4
1

Highest AQI (US) recorded in

March

115AQI (US)

Lowest AQI (US) recorded in

April

91AQI (US)

Most & Least Polluted Years Over the Last 6 Years

Most Polluted Year Recorded
2020(Avg.)
103AQI (US)
Least Polluted Year Recorded
2024(Avg.)
68AQI (US)

Zichang County Environmental Protection Bureau's annual 2026 AQI (US) (71) shows an average percentage change of -17.6% (improved AQI (US)) compared to previous years: 2020 (103), 2022 (87), 2023 (97), 2024 (68), 2025 (85).