Country Background
HistoryAQIPM₂.₅PM₁₀COSO₂NO₂O₃

Yi County Environmental Protection Bureau, Gaobeidian, 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

Yi County Environmental Protection Bureau, Gaobeidian, Hebei, China

2022
2024
2025
2026
AQI
.
Days

AQI Trends: Highest and Lowest

Highest AQI recorded on
11th Aug 2024
99AQI
Lowest AQI recorded on
13th Aug 2026
28AQI

Same Day Analysis (17th August):
On this day, AQI across the 4 years varied significantly: 2026 ranks 3rd highest AQI at 44 of Good air quality, showing improvement over 2025 and 2024 on the same day.

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

Yi County Environmental Protection Bureau, Gaobeidian, Hebei, China

AQI
Day
Night
.

5 AM16th Aug 2026

7 PM

4 AM17th Aug 2026

Day time
Avg. Highest Time
7AM16th Aug

75AQI

Avg. Lowest Time
7PM16th Aug

25AQI

Night time
Avg. Highest Time
3AM17th Aug

56AQI

Avg. Lowest Time
12AM17th Aug

25AQI

In the last 24 hours,

Yi County Environmental Protection Bureau's AQI reached its highest point of 75 at 7 AM during the Day, while the lowest point, 25, was recorded at 12 AM during the Night between 16th Aug and 17th Aug 2026.

Day & Night AQI Trend : Jul - Aug 2026

Yi County Environmental Protection Bureau, Gaobeidian, 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 2026905 AMAQI
19th Jul 2026926 AMAQI
19th Jul 2026977 AMAQI
19th Jul 2026978 AMAQI
19th Jul 2026869 AMAQI
19th Jul 20268110 AMAQI
19th Jul 20269211 AMAQI
19th Jul 202610612 PMAQI
19th Jul 20261141 PMAQI
19th Jul 20261042 PMAQI
19th Jul 2026923 PMAQI
19th Jul 2026904 PMAQI
19th Jul 2026845 PMAQI
19th Jul 2026836 PMAQI
19th Jul 2026767 PMAQI
19th Jul 2026788 PMAQI
19th Jul 2026909 PMAQI
19th Jul 20268610 PMAQI
19th Jul 20267811 PMAQI
20th Jul 20267612 AMAQI
20th Jul 2026831 AMAQI
20th Jul 2026862 AMAQI
20th Jul 2026843 AMAQI
20th Jul 2026854 AMAQI

26°C20/33°C

20th Jul 2026785 AMAQI
20th Jul 2026876 AMAQI
20th Jul 2026857 AMAQI
20th Jul 2026878 AMAQI
20th Jul 2026809 AMAQI
20th Jul 20269710 AMAQI
20th Jul 202611011 AMAQI
20th Jul 202611112 PMAQI
20th Jul 20261061 PMAQI
20th Jul 2026922 PMAQI
20th Jul 20261143 PMAQI
20th Jul 20261044 PMAQI
20th Jul 2026825 PMAQI
20th Jul 2026836 PMAQI
20th Jul 2026717 PMAQI
20th Jul 2026728 PMAQI
20th Jul 2026769 PMAQI
20th Jul 20267810 PMAQI
20th Jul 20265811 PMAQI
21st Jul 20264212 AMAQI
21st Jul 2026291 AMAQI
21st Jul 2026422 AMAQI
21st Jul 2026423 AMAQI
21st Jul 2026214 AMAQI

27°C19/34°C

21st Jul 2026335 AMAQI
21st Jul 2026446 AMAQI
21st Jul 2026217 AMAQI
21st Jul 2026258 AMAQI
21st Jul 2026239 AMAQI
21st Jul 20262710 AMAQI
21st Jul 20263812 PMAQI
21st Jul 2026311 PMAQI
21st Jul 2026442 PMAQI
21st Jul 2026463 PMAQI
21st Jul 2026464 PMAQI
21st Jul 2026515 PMAQI
21st Jul 2026936 PMAQI
21st Jul 2026717 PMAQI
21st Jul 2026728 PMAQI
21st Jul 2026789 PMAQI
21st Jul 20267610 PMAQI
21st Jul 20268011 PMAQI
22nd Jul 20267612 AMAQI
22nd Jul 2026741 AMAQI
22nd Jul 2026712 AMAQI
22nd Jul 2026523 AMAQI
22nd Jul 2026234 AMAQI

25°C19/31°C

22nd Jul 2026235 AMAQI
22nd Jul 2026296 AMAQI
22nd Jul 2026407 AMAQI
22nd Jul 2026408 AMAQI
22nd Jul 2026319 AMAQI
22nd Jul 20262710 AMAQI
22nd Jul 20263111 AMAQI
22nd Jul 20262912 PMAQI
22nd Jul 2026311 PMAQI
22nd Jul 2026252 PMAQI
22nd Jul 2026383 PMAQI
22nd Jul 2026334 PMAQI
22nd Jul 2026485 PMAQI
22nd Jul 2026446 PMAQI
22nd Jul 2026467 PMAQI
22nd Jul 2026588 PMAQI
22nd Jul 2026519 PMAQI
22nd Jul 20262710 PMAQI
22nd Jul 20263811 PMAQI
23rd Jul 20264212 AMAQI
23rd Jul 2026501 AMAQI
23rd Jul 2026552 AMAQI
23rd Jul 2026333 AMAQI
23rd Jul 2026484 AMAQI

25°C23/29°C

23rd Jul 2026465 AMAQI
23rd Jul 2026656 AMAQI
23rd Jul 2026687 AMAQI
23rd Jul 2026558 AMAQI
23rd Jul 2026449 AMAQI
23rd Jul 20266010 AMAQI
23rd Jul 20266011 AMAQI
23rd Jul 20263112 PMAQI
23rd Jul 2026441 PMAQI
23rd Jul 2026362 PMAQI
23rd Jul 2026443 PMAQI
23rd Jul 2026524 PMAQI
23rd Jul 2026645 PMAQI
23rd Jul 2026606 PMAQI
23rd Jul 2026527 PMAQI
23rd Jul 2026538 PMAQI
23rd Jul 2026569 PMAQI
23rd Jul 20267210 PMAQI
23rd Jul 20266911 PMAQI
24th Jul 20267612 AMAQI
24th Jul 2026841 AMAQI
24th Jul 2026812 AMAQI
24th Jul 2026743 AMAQI
24th Jul 2026854 AMAQI

25°C22/29°C

24th Jul 2026955 AMAQI
24th Jul 2026886 AMAQI
24th Jul 2026887 AMAQI
24th Jul 2026858 AMAQI
24th Jul 2026849 AMAQI
24th Jul 20268310 AMAQI
24th Jul 20268911 AMAQI
24th Jul 20269012 PMAQI
24th Jul 2026691 PMAQI
24th Jul 2026722 PMAQI
24th Jul 2026813 PMAQI
24th Jul 2026784 PMAQI
24th Jul 2026835 PMAQI
24th Jul 2026766 PMAQI
24th Jul 2026637 PMAQI
24th Jul 2026808 PMAQI
24th Jul 2026879 PMAQI
24th Jul 20267610 PMAQI
24th Jul 20268211 PMAQI
25th Jul 20268512 AMAQI
25th Jul 2026941 AMAQI
25th Jul 2026892 AMAQI
25th Jul 2026893 AMAQI
25th Jul 2026964 AMAQI

26°C22/31°C

25th Jul 20261055 AMAQI
25th Jul 2026936 AMAQI
25th Jul 2026877 AMAQI
25th Jul 2026818 AMAQI
25th Jul 2026859 AMAQI
25th Jul 20267810 AMAQI
25th Jul 20269511 AMAQI
25th Jul 20269012 PMAQI
25th Jul 2026791 PMAQI
25th Jul 2026712 PMAQI
25th Jul 2026863 PMAQI
25th Jul 2026714 PMAQI
25th Jul 2026645 PMAQI
25th Jul 2026786 PMAQI
25th Jul 2026817 PMAQI
25th Jul 2026998 PMAQI
25th Jul 20261109 PMAQI
25th Jul 20269710 PMAQI
25th Jul 20269811 PMAQI
26th Jul 20268512 AMAQI
26th Jul 2026951 AMAQI
26th Jul 2026892 AMAQI
26th Jul 2026863 AMAQI
26th Jul 2026814 AMAQI

27°C22/32°C

26th Jul 2026765 AMAQI
26th Jul 2026696 AMAQI
26th Jul 2026687 AMAQI
26th Jul 2026788 AMAQI
26th Jul 2026699 AMAQI
26th Jul 20267610 AMAQI
26th Jul 20268311 AMAQI
26th Jul 20267612 PMAQI
26th Jul 2026721 PMAQI
26th Jul 2026782 PMAQI
26th Jul 2026743 PMAQI
26th Jul 2026744 PMAQI
26th Jul 2026865 PMAQI
26th Jul 2026866 PMAQI
26th Jul 2026827 PMAQI
26th Jul 2026888 PMAQI
26th Jul 2026929 PMAQI
26th Jul 20269210 PMAQI
26th Jul 20268011 PMAQI
27th Jul 20268612 AMAQI
27th Jul 2026861 AMAQI
27th Jul 2026822 AMAQI
27th Jul 2026713 AMAQI
27th Jul 2026784 AMAQI

27°C24/32°C

27th Jul 2026765 AMAQI
27th Jul 2026866 AMAQI
27th Jul 2026807 AMAQI
27th Jul 2026768 AMAQI
27th Jul 2026739 AMAQI
27th Jul 20267410 AMAQI
27th Jul 20267611 AMAQI
27th Jul 20267212 PMAQI
27th Jul 2026761 PMAQI
27th Jul 2026842 PMAQI
27th Jul 2026663 PMAQI
27th Jul 2026654 PMAQI
27th Jul 2026705 PMAQI
27th Jul 2026716 PMAQI
27th Jul 2026637 PMAQI
27th Jul 2026638 PMAQI
27th Jul 2026769 PMAQI
27th Jul 20265910 PMAQI
27th Jul 20266211 PMAQI
28th Jul 20266312 AMAQI
28th Jul 2026651 AMAQI
28th Jul 2026702 AMAQI
28th Jul 2026743 AMAQI
28th Jul 2026744 AMAQI

28°C23/34°C

28th Jul 2026725 AMAQI
28th Jul 2026696 AMAQI
28th Jul 2026697 AMAQI
28th Jul 2026678 AMAQI
28th Jul 2026589 AMAQI
28th Jul 20266210 AMAQI
28th Jul 20266611 AMAQI
28th Jul 20266012 PMAQI
28th Jul 2026511 PMAQI
28th Jul 2026582 PMAQI
28th Jul 2026503 PMAQI
28th Jul 2026604 PMAQI
28th Jul 2026575 PMAQI
28th Jul 2026566 PMAQI
28th Jul 2026507 PMAQI
28th Jul 2026588 PMAQI
28th Jul 2026629 PMAQI
28th Jul 20266210 PMAQI
28th Jul 20265211 PMAQI
29th Jul 20265112 AMAQI
29th Jul 2026511 AMAQI
29th Jul 2026492 AMAQI
29th Jul 2026503 AMAQI
29th Jul 2026504 AMAQI

30°C25/35°C

29th Jul 2026535 AMAQI
29th Jul 2026566 AMAQI
29th Jul 2026667 AMAQI
29th Jul 2026498 AMAQI
29th Jul 2026539 AMAQI
29th Jul 20265510 AMAQI
29th Jul 20266211 AMAQI
29th Jul 20265012 PMAQI
29th Jul 2026341 PMAQI
29th Jul 2026382 PMAQI
29th Jul 2026483 PMAQI
29th Jul 2026544 PMAQI
29th Jul 2026405 PMAQI
29th Jul 2026306 PMAQI
29th Jul 2026427 PMAQI
29th Jul 2026448 PMAQI
29th Jul 2026529 PMAQI
29th Jul 20265810 PMAQI
29th Jul 20263811 PMAQI
30th Jul 20263112 AMAQI
30th Jul 2026291 AMAQI
30th Jul 2026362 AMAQI
30th Jul 2026423 AMAQI
30th Jul 2026424 AMAQI

29°C24/35°C

30th Jul 2026425 AMAQI
30th Jul 2026486 AMAQI
30th Jul 2026427 AMAQI
30th Jul 2026328 AMAQI
30th Jul 2026259 AMAQI
30th Jul 20262710 AMAQI
30th Jul 20263111 AMAQI
30th Jul 20262912 PMAQI
30th Jul 2026381 PMAQI
30th Jul 2026382 PMAQI
30th Jul 2026363 PMAQI
30th Jul 2026334 PMAQI
30th Jul 2026365 PMAQI
30th Jul 2026386 PMAQI
30th Jul 2026467 PMAQI
30th Jul 2026448 PMAQI
30th Jul 2026339 PMAQI
30th Jul 20265010 PMAQI
30th Jul 20264811 PMAQI
31st Jul 20264412 AMAQI
31st Jul 2026481 AMAQI
31st Jul 2026582 AMAQI
31st Jul 2026363 AMAQI
31st Jul 2026334 AMAQI

29°C25/34°C

31st Jul 2026445 AMAQI
31st Jul 2026556 AMAQI
31st Jul 2026567 AMAQI
31st Jul 2026628 AMAQI
31st Jul 2026649 AMAQI
31st Jul 20266010 AMAQI
31st Jul 20263111 AMAQI
31st Jul 20264212 PMAQI
31st Jul 2026641 PMAQI
31st Jul 2026742 PMAQI
31st Jul 2026733 PMAQI
31st Jul 2026704 PMAQI
31st Jul 2026695 PMAQI
31st Jul 2026686 PMAQI
31st Jul 2026667 PMAQI
31st Jul 2026658 PMAQI
31st Jul 2026679 PMAQI
31st Jul 20266210 PMAQI
31st Jul 20266011 PMAQI
1st Aug 20265512 AMAQI
1st Aug 2026401 AMAQI
1st Aug 2026252 AMAQI
1st Aug 2026363 AMAQI
1st Aug 2026314 AMAQI

28°C25/33°C

1st Aug 2026385 AMAQI
1st Aug 2026296 AMAQI
1st Aug 2026317 AMAQI
1st Aug 2026278 AMAQI
1st Aug 2026219 AMAQI
1st Aug 20263210 AMAQI
1st Aug 20263211 AMAQI
1st Aug 20262312 PMAQI
1st Aug 2026341 PMAQI
1st Aug 2026402 PMAQI
1st Aug 2026403 PMAQI
1st Aug 2026464 PMAQI
1st Aug 2026505 PMAQI
1st Aug 2026476 PMAQI
1st Aug 2026557 PMAQI
1st Aug 2026578 PMAQI
1st Aug 2026729 PMAQI
1st Aug 20266910 PMAQI
1st Aug 20266811 PMAQI
2nd Aug 20267612 AMAQI
2nd Aug 2026761 AMAQI
2nd Aug 2026822 AMAQI
2nd Aug 2026783 AMAQI
2nd Aug 2026694 AMAQI

30°C25/35°C

2nd Aug 2026565 AMAQI
2nd Aug 2026496 AMAQI
2nd Aug 2026517 AMAQI
2nd Aug 2026478 AMAQI
2nd Aug 2026409 AMAQI
2nd Aug 20263610 AMAQI
2nd Aug 20264611 AMAQI
2nd Aug 20265412 PMAQI
2nd Aug 2026601 PMAQI
2nd Aug 2026762 PMAQI
2nd Aug 2026663 PMAQI
2nd Aug 2026624 PMAQI
2nd Aug 2026725 PMAQI
2nd Aug 2026766 PMAQI
2nd Aug 2026767 PMAQI
2nd Aug 2026768 PMAQI
2nd Aug 2026729 PMAQI
2nd Aug 20266810 PMAQI
2nd Aug 20265311 PMAQI
3rd Aug 20265212 AMAQI
3rd Aug 2026441 AMAQI
3rd Aug 2026302 AMAQI
3rd Aug 2026263 AMAQI
3rd Aug 2026254 AMAQI

29°C25/34°C

3rd Aug 2026325 AMAQI
3rd Aug 2026216 AMAQI
3rd Aug 2026277 AMAQI
3rd Aug 2026338 AMAQI
3rd Aug 2026339 AMAQI
3rd Aug 20262910 AMAQI
3rd Aug 20262911 AMAQI
3rd Aug 20263312 PMAQI
3rd Aug 2026481 PMAQI
3rd Aug 2026662 PMAQI
3rd Aug 2026783 PMAQI
3rd Aug 2026784 PMAQI
3rd Aug 2026695 PMAQI
3rd Aug 2026716 PMAQI
3rd Aug 2026797 PMAQI
3rd Aug 2026608 PMAQI
3rd Aug 2026469 PMAQI
3rd Aug 20264010 PMAQI
3rd Aug 20262911 PMAQI
4th Aug 20262512 AMAQI
4th Aug 2026271 AMAQI
4th Aug 2026342 AMAQI
4th Aug 2026443 AMAQI
4th Aug 2026424 AMAQI

28°C23/33°C

4th Aug 2026455 AMAQI
4th Aug 2026426 AMAQI
4th Aug 2026427 AMAQI
4th Aug 2026488 AMAQI
4th Aug 2026479 AMAQI
4th Aug 20263410 AMAQI
4th Aug 20262911 AMAQI
4th Aug 20263112 PMAQI
4th Aug 2026361 PMAQI
4th Aug 2026422 PMAQI
4th Aug 2026273 PMAQI
4th Aug 2026364 PMAQI
4th Aug 2026295 PMAQI
4th Aug 2026386 PMAQI
4th Aug 2026547 PMAQI
4th Aug 2026508 PMAQI
4th Aug 2026509 PMAQI
4th Aug 20264410 PMAQI
4th Aug 20263411 PMAQI
5th Aug 20262712 AMAQI
5th Aug 2026381 AMAQI
5th Aug 2026332 AMAQI
5th Aug 2026443 AMAQI
5th Aug 2026484 AMAQI

27°C23/33°C

5th Aug 2026405 AMAQI
5th Aug 2026316 AMAQI
5th Aug 2026297 AMAQI
5th Aug 2026338 AMAQI
5th Aug 2026429 AMAQI
5th Aug 20264710 AMAQI
5th Aug 20265111 AMAQI
5th Aug 20265512 PMAQI
5th Aug 2026271 PMAQI
5th Aug 2026252 PMAQI
5th Aug 2026403 PMAQI
5th Aug 2026534 PMAQI
5th Aug 2026555 PMAQI
5th Aug 2026506 PMAQI
5th Aug 2026557 PMAQI
5th Aug 2026368 PMAQI
5th Aug 2026549 PMAQI
5th Aug 20266010 PMAQI
5th Aug 20266611 PMAQI
6th Aug 20267312 AMAQI
6th Aug 2026521 AMAQI
6th Aug 2026702 AMAQI
6th Aug 2026623 AMAQI
6th Aug 2026694 AMAQI

29°C23/35°C

6th Aug 2026675 AMAQI
6th Aug 2026636 AMAQI
6th Aug 2026707 AMAQI
6th Aug 2026738 AMAQI
6th Aug 2026609 AMAQI
6th Aug 20265610 AMAQI
6th Aug 20265511 AMAQI
6th Aug 20265712 PMAQI
6th Aug 2026621 PMAQI
6th Aug 2026682 PMAQI
6th Aug 2026663 PMAQI
6th Aug 2026684 PMAQI
6th Aug 2026655 PMAQI
6th Aug 2026716 PMAQI
6th Aug 2026667 PMAQI
6th Aug 2026608 PMAQI
6th Aug 2026549 PMAQI
6th Aug 20266010 PMAQI
6th Aug 20267211 PMAQI
7th Aug 20266912 AMAQI
7th Aug 2026701 AMAQI
7th Aug 2026782 AMAQI
7th Aug 2026763 AMAQI
7th Aug 2026804 AMAQI

30°C25/36°C

7th Aug 2026785 AMAQI
7th Aug 2026746 AMAQI
7th Aug 2026857 AMAQI
7th Aug 2026868 AMAQI
7th Aug 2026829 AMAQI
7th Aug 20268410 AMAQI
7th Aug 20268811 AMAQI
7th Aug 20267012 PMAQI
7th Aug 2026621 PMAQI
7th Aug 2026632 PMAQI
7th Aug 2026563 PMAQI
7th Aug 2026594 PMAQI
7th Aug 2026625 PMAQI
7th Aug 2026716 PMAQI
7th Aug 20261027 PMAQI
7th Aug 2026688 PMAQI
7th Aug 2026669 PMAQI
7th Aug 20264810 PMAQI
7th Aug 20262511 PMAQI
8th Aug 20262712 AMAQI
8th Aug 2026291 AMAQI
8th Aug 2026422 AMAQI
8th Aug 2026383 AMAQI
8th Aug 2026464 AMAQI

29°C24/36°C

8th Aug 2026235 AMAQI
8th Aug 2026236 AMAQI
8th Aug 2026297 AMAQI
8th Aug 2026428 AMAQI
8th Aug 2026259 AMAQI
8th Aug 20262510 AMAQI
8th Aug 20264611 AMAQI
8th Aug 20262912 PMAQI
8th Aug 2026211 PMAQI
8th Aug 2026252 PMAQI
8th Aug 2026253 PMAQI
8th Aug 2026234 PMAQI
8th Aug 2026315 PMAQI
8th Aug 2026256 PMAQI
8th Aug 2026257 PMAQI
8th Aug 2026498 PMAQI
8th Aug 2026389 PMAQI
8th Aug 20264210 PMAQI
8th Aug 20265311 PMAQI
9th Aug 20264812 AMAQI
9th Aug 2026461 AMAQI
9th Aug 2026542 AMAQI
9th Aug 2026283 AMAQI
9th Aug 2026404 AMAQI

25°C22/30°C

9th Aug 2026335 AMAQI
9th Aug 2026516 AMAQI
9th Aug 2026367 AMAQI
9th Aug 2026408 AMAQI
9th Aug 2026369 AMAQI
9th Aug 20264210 AMAQI
9th Aug 20263011 AMAQI
9th Aug 20262912 PMAQI
9th Aug 2026361 PMAQI
9th Aug 2026332 PMAQI
9th Aug 2026463 PMAQI
9th Aug 2026504 PMAQI
9th Aug 2026575 PMAQI
9th Aug 2026686 PMAQI
9th Aug 2026677 PMAQI
9th Aug 2026698 PMAQI
9th Aug 2026659 PMAQI
9th Aug 20266610 PMAQI
9th Aug 20266811 PMAQI
10th Aug 20267812 AMAQI
10th Aug 2026811 AMAQI
10th Aug 2026742 AMAQI
10th Aug 2026743 AMAQI
10th Aug 2026674 AMAQI

25°C20/31°C

10th Aug 2026645 AMAQI
10th Aug 2026626 AMAQI
10th Aug 2026627 AMAQI
10th Aug 2026578 AMAQI
10th Aug 2026609 AMAQI
10th Aug 20266210 AMAQI
10th Aug 20265211 AMAQI
10th Aug 20263812 PMAQI
10th Aug 2026481 PMAQI
10th Aug 2026532 PMAQI
10th Aug 2026633 PMAQI
10th Aug 2026594 PMAQI
10th Aug 2026515 PMAQI
10th Aug 2026626 PMAQI
10th Aug 2026647 PMAQI
10th Aug 2026698 PMAQI
10th Aug 2026529 PMAQI
10th Aug 20266410 PMAQI
10th Aug 20266911 PMAQI
11th Aug 20268112 AMAQI
11th Aug 2026741 AMAQI
11th Aug 2026782 AMAQI
11th Aug 2026833 AMAQI
11th Aug 2026764 AMAQI

25°C19/32°C

11th Aug 2026855 AMAQI
11th Aug 2026816 AMAQI
11th Aug 20261027 AMAQI
11th Aug 2026818 AMAQI
11th Aug 2026789 AMAQI
11th Aug 20266910 AMAQI
11th Aug 20268111 AMAQI
11th Aug 20266212 PMAQI
11th Aug 2026621 PMAQI
11th Aug 2026552 PMAQI
11th Aug 2026703 PMAQI
11th Aug 2026664 PMAQI
11th Aug 2026495 PMAQI
11th Aug 2026576 PMAQI
11th Aug 2026427 PMAQI
11th Aug 2026338 PMAQI
11th Aug 2026219 PMAQI
11th Aug 20262310 PMAQI
11th Aug 20263611 PMAQI
12th Aug 20262312 AMAQI
12th Aug 2026401 AMAQI
12th Aug 2026362 AMAQI
12th Aug 2026253 AMAQI
12th Aug 2026334 AMAQI

26°C21/33°C

12th Aug 2026485 AMAQI
12th Aug 2026446 AMAQI
12th Aug 2026257 AMAQI
12th Aug 2026278 AMAQI
12th Aug 2026299 AMAQI
12th Aug 20262910 AMAQI
12th Aug 20262911 AMAQI
12th Aug 20263812 PMAQI
12th Aug 2026291 PMAQI
12th Aug 2026252 PMAQI
12th Aug 2026293 PMAQI
12th Aug 2026314 PMAQI
12th Aug 2026485 PMAQI
12th Aug 2026406 PMAQI
12th Aug 2026427 PMAQI
12th Aug 2026448 PMAQI
12th Aug 2026219 PMAQI
12th Aug 20262910 PMAQI
12th Aug 20264811 PMAQI
13th Aug 20264612 AMAQI
13th Aug 2026211 AMAQI
13th Aug 2026502 AMAQI
13th Aug 2026253 AMAQI
13th Aug 2026214 AMAQI

23°C22/25°C

13th Aug 2026235 AMAQI
13th Aug 2026256 AMAQI
13th Aug 2026257 AMAQI
13th Aug 2026218 AMAQI
13th Aug 2026259 AMAQI
13th Aug 20262510 AMAQI
13th Aug 20262511 AMAQI
13th Aug 20262512 PMAQI
13th Aug 2026291 PMAQI
13th Aug 2026332 PMAQI
13th Aug 2026253 PMAQI
13th Aug 2026234 PMAQI
13th Aug 2026295 PMAQI
13th Aug 2026256 PMAQI
13th Aug 2026257 PMAQI
13th Aug 2026288 PMAQI
13th Aug 2026299 PMAQI
13th Aug 20262910 PMAQI
13th Aug 20263611 PMAQI
14th Aug 20262112 AMAQI
14th Aug 2026401 AMAQI
14th Aug 2026272 AMAQI
14th Aug 2026463 AMAQI
14th Aug 2026214 AMAQI

23°C21/27°C

14th Aug 2026445 AMAQI
14th Aug 2026336 AMAQI
14th Aug 2026307 AMAQI
14th Aug 2026428 AMAQI
14th Aug 2026219 AMAQI
14th Aug 20262310 AMAQI
14th Aug 20263611 AMAQI
14th Aug 20262112 PMAQI
14th Aug 2026211 PMAQI
14th Aug 2026212 PMAQI
14th Aug 2026313 PMAQI
14th Aug 2026194 PMAQI
14th Aug 2026295 PMAQI
14th Aug 2026256 PMAQI
14th Aug 2026387 PMAQI
14th Aug 2026338 PMAQI
14th Aug 2026329 PMAQI
14th Aug 20263310 PMAQI
14th Aug 20264211 PMAQI
15th Aug 20262712 AMAQI
15th Aug 2026211 AMAQI
15th Aug 2026292 AMAQI
15th Aug 2026253 AMAQI
15th Aug 2026364 AMAQI

25°C19/31°C

15th Aug 2026405 AMAQI
15th Aug 2026406 AMAQI
15th Aug 2026427 AMAQI
15th Aug 2026318 AMAQI
15th Aug 2026219 AMAQI
15th Aug 20262710 AMAQI
15th Aug 20265211 AMAQI
15th Aug 20264412 PMAQI
15th Aug 2026291 PMAQI
15th Aug 2026292 PMAQI
15th Aug 2026293 PMAQI
15th Aug 2026484 PMAQI
15th Aug 2026555 PMAQI
15th Aug 2026536 PMAQI
15th Aug 2026587 PMAQI
15th Aug 2026428 PMAQI
15th Aug 2026449 PMAQI
15th Aug 20265410 PMAQI
15th Aug 20264211 PMAQI
16th Aug 20266212 AMAQI
16th Aug 2026601 AMAQI
16th Aug 2026682 AMAQI
16th Aug 2026623 AMAQI
16th Aug 2026574 AMAQI

25°C20/29°C

16th Aug 2026645 AMAQI
16th Aug 2026586 AMAQI
16th Aug 2026757 AMAQI
16th Aug 2026448 AMAQI
16th Aug 2026529 AMAQI
16th Aug 20263110 AMAQI
16th Aug 20265511 AMAQI
16th Aug 20262512 PMAQI
16th Aug 2026291 PMAQI
16th Aug 2026382 PMAQI
16th Aug 2026293 PMAQI
16th Aug 2026334 PMAQI
16th Aug 2026295 PMAQI
16th Aug 2026336 PMAQI
16th Aug 2026257 PMAQI
16th Aug 2026368 PMAQI
16th Aug 2026389 PMAQI
16th Aug 20263310 PMAQI
16th Aug 20264011 PMAQI
17th Aug 20262512 AMAQI
17th Aug 2026311 AMAQI
17th Aug 2026482 AMAQI
17th Aug 2026563 AMAQI
17th Aug 2026554 AMAQI

23°C20/29°C

17th Aug 2026425 AMAQI
5 AM
17th Aug 2026556 AMAQI
17th Aug 2026487 AMAQI
17th Aug 2026368 AMAQI
17th Aug 2026469 AMAQI
17th Aug 20265010 AMAQI
17th Aug 20264611 AMAQI
17th Aug 20264212 PMAQI
12 PM
17th Aug 2026231 PMAQI
17th Aug 2026272 PMAQI
17th Aug 2026313 PMAQI
17th Aug 2026294 PMAQI
17th Aug 2026365 PMAQI
17th Aug 2026486 PMAQI
17th Aug 2026537 PMAQI
7 PM
17th Aug 2026658 PMAQI
17th Aug 2026539 PMAQI
17th Aug 20264910 PMAQI
17th Aug 20265311 PMAQI
12 AM
4 AM

12°C10/14°C

Day time
Avg. Highest Time
6 PM - 7 PM

58AQI

2 hours / Day
60 hours / Month
Avg. Lowest Time
12 PM - 1 PM

50AQI

2 hours / Day
60 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 6 PM to 7 PM (Avg. 58), while the lowest AQI was between 12 PM to 1 PM (Avg. 50).
Night time
Avg. Highest Time
2 AM

59AQI

1 hours / Day
30 hours / Month
Avg. Lowest Time
3 AM - 4 AM

55AQI

2 hours / Day
60 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 2 AM to 2 AM (Avg. 59), while the lowest AQI was between 3 AM to 4 AM (Avg. 55).

2026 Days Vs Air Quality

Yi County Environmental Protection Bureau, Gaobeidian, Hebei, China

2026

20%

45

38%

88

31%

70

11%

26

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

Good
45 Days
Moderate
88 Days
Poor
70 Days
Unhealthy
26 Days
Severe
0 Days
Hazardous
0 Days

Under WHO’s Safe Air Quality Limits: 20%

Health Risk Level:

Very high

In 2026, 20% 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

Yi County Environmental Protection Bureau, Gaobeidian, 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
103AQI (US)
2nd January 2026
152AQI (US)
3rd January 2026
173AQI (US)
4th January 2026
174AQI (US)
5th January 2026
162AQI (US)
6th January 2026
137AQI (US)
7th January 2026
94AQI (US)
8th January 2026
123AQI (US)
9th January 2026
141AQI (US)
10th January 2026
40AQI (US)
11th January 2026
43AQI (US)
12th January 2026
106AQI (US)
13th January 2026
123AQI (US)
14th January 2026
127AQI (US)
15th January 2026
171AQI (US)
16th January 2026
157AQI (US)
17th January 2026
103AQI (US)
18th January 2026
83AQI (US)
19th January 2026
60AQI (US)
20th January 2026
85AQI (US)
21st January 2026
123AQI (US)
22nd January 2026
143AQI (US)
23rd January 2026
140AQI (US)
24th January 2026
146AQI (US)
25th January 2026
109AQI (US)
26th January 2026
106AQI (US)
27th January 2026
131AQI (US)
28th January 2026
115AQI (US)
29th January 2026
138AQI (US)
30th January 2026
158AQI (US)
31st January 2026
167AQI (US)
1st February 2026
168AQI (US)
2nd February 2026
123AQI (US)
3rd February 2026
160AQI (US)
4th February 2026
158AQI (US)
5th February 2026
120AQI (US)
6th February 2026
41AQI (US)
7th February 2026
87AQI (US)
8th February 2026
111AQI (US)
9th February 2026
135AQI (US)
10th February 2026
146AQI (US)
11th February 2026
153AQI (US)
12th February 2026
158AQI (US)
13th February 2026
165AQI (US)
14th February 2026
139AQI (US)
15th February 2026
50AQI (US)
16th February 2026
89AQI (US)
17th February 2026
111AQI (US)
18th February 2026
88AQI (US)
19th February 2026
141AQI (US)
20th February 2026
140AQI (US)
21st February 2026
133AQI (US)
22nd February 2026
72AQI (US)
23rd February 2026
43AQI (US)
24th February 2026
104AQI (US)
25th February 2026
139AQI (US)
26th February 2026
150AQI (US)
27th February 2026
95AQI (US)
28th February 2026
130AQI (US)
1st March 2026
137AQI (US)
2nd March 2026
157AQI (US)
3rd March 2026
162AQI (US)
4th March 2026
157AQI (US)
5th March 2026
127AQI (US)
6th March 2026
115AQI (US)
7th March 2026
142AQI (US)
8th March 2026
158AQI (US)
9th March 2026
112AQI (US)
10th March 2026
156AQI (US)
11th March 2026
138AQI (US)
12th March 2026
156AQI (US)
13th March 2026
167AQI (US)
14th March 2026
148AQI (US)
15th March 2026
120AQI (US)
16th March 2026
112AQI (US)
17th March 2026
137AQI (US)
18th March 2026
84AQI (US)
19th March 2026
85AQI (US)
20th March 2026
132AQI (US)
21st March 2026
113AQI (US)
22nd March 2026
113AQI (US)
23rd March 2026
154AQI (US)
24th March 2026
167AQI (US)
25th March 2026
168AQI (US)
26th March 2026
180AQI (US)
27th March 2026
101AQI (US)
28th March 2026
129AQI (US)
29th March 2026
129AQI (US)
30th March 2026
84AQI (US)
31st March 2026
94AQI (US)
1st April 2026
92AQI (US)
2nd April 2026
109AQI (US)
3rd April 2026
127AQI (US)
4th April 2026
97AQI (US)
5th April 2026
95AQI (US)
6th April 2026
41AQI (US)
7th April 2026
41AQI (US)
8th April 2026
118AQI (US)
9th April 2026
122AQI (US)
10th April 2026
88AQI (US)
11th April 2026
96AQI (US)
12th April 2026
116AQI (US)
13th April 2026
114AQI (US)
14th April 2026
142AQI (US)
15th April 2026
158AQI (US)
16th April 2026
125AQI (US)
17th April 2026
140AQI (US)
18th April 2026
144AQI (US)
19th April 2026
93AQI (US)
20th April 2026
64AQI (US)
21st April 2026
88AQI (US)
22nd April 2026
84AQI (US)
23rd April 2026
84AQI (US)
24th April 2026
99AQI (US)
25th April 2026
82AQI (US)
26th April 2026
87AQI (US)
27th April 2026
50AQI (US)
28th April 2026
57AQI (US)
29th April 2026
45AQI (US)
30th April 2026
80AQI (US)
1st May 2026
133AQI (US)
2nd May 2026
61AQI (US)
3rd May 2026
40AQI (US)
4th May 2026
55AQI (US)
5th May 2026
87AQI (US)
6th May 2026
88AQI (US)
7th May 2026
51AQI (US)
8th May 2026
67AQI (US)
9th May 2026
93AQI (US)
10th May 2026
104AQI (US)
11th May 2026
79AQI (US)
12th May 2026
108AQI (US)
13th May 2026
132AQI (US)
14th May 2026
123AQI (US)
15th May 2026
138AQI (US)
16th May 2026
78AQI (US)
17th May 2026
67AQI (US)
18th May 2026
64AQI (US)
19th May 2026
62AQI (US)
20th May 2026
71AQI (US)
21st May 2026
79AQI (US)
22nd May 2026
92AQI (US)
23rd May 2026
83AQI (US)
24th May 2026
77AQI (US)
25th May 2026
74AQI (US)
26th May 2026
51AQI (US)
27th May 2026
59AQI (US)
28th May 2026
33AQI (US)
29th May 2026
43AQI (US)
30th May 2026
51AQI (US)
31st May 2026
72AQI (US)
1st June 2026
59AQI (US)
2nd June 2026
105AQI (US)
3rd June 2026
65AQI (US)
4th June 2026
41AQI (US)
5th June 2026
37AQI (US)
6th June 2026
42AQI (US)
7th June 2026
28AQI (US)
8th June 2026
42AQI (US)
9th June 2026
31AQI (US)
10th June 2026
36AQI (US)
11th June 2026
40AQI (US)
12th June 2026
61AQI (US)
13th June 2026
58AQI (US)
14th June 2026
54AQI (US)
15th June 2026
112AQI (US)
16th June 2026
60AQI (US)
17th June 2026
46AQI (US)
18th June 2026
103AQI (US)
19th June 2026
102AQI (US)
20th June 2026
64AQI (US)
21st June 2026
48AQI (US)
22nd June 2026
62AQI (US)
23rd June 2026
67AQI (US)
24th June 2026
115AQI (US)
25th June 2026
69AQI (US)
26th June 2026
33AQI (US)
27th June 2026
62AQI (US)
28th June 2026
54AQI (US)
29th June 2026
80AQI (US)
30th June 2026
76AQI (US)
1st July 2026
81AQI (US)
2nd July 2026
102AQI (US)
3rd July 2026
114AQI (US)
4th July 2026
62AQI (US)
5th July 2026
51AQI (US)
6th July 2026
43AQI (US)
7th July 2026
47AQI (US)
8th July 2026
57AQI (US)
9th July 2026
60AQI (US)
10th July 2026
60AQI (US)
11th July 2026
64AQI (US)
12th July 2026
30AQI (US)
13th July 2026
53AQI (US)
14th July 2026
50AQI (US)
15th July 2026
37AQI (US)
16th July 2026
71AQI (US)
17th July 2026
31AQI (US)
18th July 2026
57AQI (US)
19th July 2026
89AQI (US)
20th July 2026
87AQI (US)
21st July 2026
47AQI (US)
22nd July 2026
41AQI (US)
23rd July 2026
52AQI (US)
24th July 2026
81AQI (US)
25th July 2026
88AQI (US)
26th July 2026
81AQI (US)
27th July 2026
74AQI (US)
28th July 2026
62AQI (US)
29th July 2026
49AQI (US)
30th July 2026
37AQI (US)
31st July 2026
57AQI (US)
1st August 2026
42AQI (US)
2nd August 2026
63AQI (US)
3rd August 2026
45AQI (US)
4th August 2026
39AQI (US)
5th August 2026
43AQI (US)
6th August 2026
64AQI (US)
7th August 2026
71AQI (US)
8th August 2026
33AQI (US)
9th August 2026
47AQI (US)
10th August 2026
62AQI (US)
11th August 2026
64AQI (US)
12th August 2026
34AQI (US)
13th August 2026
28AQI (US)
14th August 2026
30AQI (US)
15th August 2026
38AQI (US)
16th August 2026
45AQI (US)
17th August 2026
44AQI (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

124AQI (US)

120AQI (US)

133AQI (US)

96AQI (US)

78AQI (US)

62AQI (US)

62AQI (US)

47AQI (US)

No. of days

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

202692AQI (US)

2
4
17
8
3
5
14
6
4
16
11
4
15
10
1
3
22
6
11
14
5
10
19
2
12
5
45
88
70
26

Highest AQI (US) recorded in

March

133AQI (US)

Lowest AQI (US) recorded in

August

47AQI (US)

202594AQI (US)

1
14
11
5
1
17
9
1
17
9
4
1
24
6
26
5
29
1
1
30
31
28
2
14
10
4
3
1
5
14
9
1
8
13
9
1
4
243
80
32
6

Highest AQI (US) recorded in

November

129AQI (US)

Lowest AQI (US) recorded in

August

61AQI (US)

202483AQI (US)

16
1
1
1
11
1
30
3
28
8
23
4
14
11
2
6
13
10
1
13
9
7
1
19
11
21
161
45
17

Highest AQI (US) recorded in

October

121AQI (US)

Lowest AQI (US) recorded in

March

44AQI (US)

202361AQI (US)

3
31
34

Highest AQI (US) recorded in

December

61AQI (US)

Lowest AQI (US) recorded in

November

60AQI (US)

2022107AQI (US)

5
12
13
10
11
8
13
10
13
12
5
16
13
2
19
10
1
1
22
1
2
1
95
72
31

Highest AQI (US) recorded in

January

139AQI (US)

Lowest AQI (US) recorded in

July

67AQI (US)

202181AQI (US)

6
12
10
2
7
11
8
2
3
8
15
3
2
1
10
13
2
3
19
7
1
1
6
17
7
20
11
31
30
31
8
6
12
4
12
15
4
130
91
85
42
10
2

Highest AQI (US) recorded in

March

180AQI (US)

Lowest AQI (US) recorded in

October

1AQI (US)

2020103AQI (US)

1
5
4
3
13
7
1
10
6
2
18
11
1
12
17
2
24
6
1
9
13
5
2
14
8
9
11
13
5
1
1
5
18
7
11
125
95
33
1

Highest AQI (US) recorded in

December

124AQI (US)

Lowest AQI (US) recorded in

September

78AQI (US)

Most & Least Polluted Years Over the Last 7 Years

Most Polluted Year Recorded
2022(Avg.)
107AQI (US)
Least Polluted Year Recorded
2023(Avg.)
61AQI (US)

Yi County Environmental Protection Bureau's annual 2026 AQI (US) (92) shows an average percentage change of 8.06% (worsened AQI (US)) compared to previous years: 2020 (103), 2021 (81), 2022 (107), 2023 (61), 2024 (83), 2025 (94).