Hainan University, Haikou, Hainan, 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
Hainan University, Haikou, Hainan, China
2022
2023
2024
2025
2026
AQI
.
Days
AQI Trends: Highest and Lowest
Highest AQI recorded on
31st Aug 2023
68AQILowest AQI recorded on
31st Aug 2024
13AQISame Day Analysis (17th August):
On this day, AQI across the 5 years varied significantly: 2026 ranks 3rd highest AQI at 33 of Good air quality, showing improvement over 2025 and 2023 on the same day.
Day & Night AQI Trend: 16th Aug - 17th Aug 2026
Hainan University, Haikou, Hainan, China
AQI
Day
Night
.
6 AM16th Aug 2026
7 PM
5 AM17th Aug 2026
Day time
Avg. Highest Time
6AM16th Aug
51AQI
Avg. Lowest Time
5PM16th Aug
36AQI
Night time
Avg. Highest Time
9PM16th Aug
40AQI
Avg. Lowest Time
4AM17th Aug
31AQI
In the last 24 hours,
Hainan University's AQI reached its highest point of 51 at 6 AM during the Day, while the lowest point, 31, was recorded at 4 AM during the Night between 16th Aug and 17th Aug 2026.
Day & Night AQI Trend : Jul - Aug 2026
Hainan University, Haikou, Hainan, 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 2026546 AMAQI
19th Jul 2026547 AMAQI
19th Jul 2026558 AMAQI
19th Jul 2026559 AMAQI
19th Jul 20265710 AMAQI
19th Jul 20265611 AMAQI
19th Jul 20265512 PMAQI
19th Jul 2026541 PMAQI
19th Jul 2026582 PMAQI
19th Jul 2026593 PMAQI
19th Jul 2026564 PMAQI
19th Jul 2026575 PMAQI
19th Jul 2026606 PMAQI
19th Jul 2026657 PMAQI
19th Jul 2026678 PMAQI
19th Jul 2026659 PMAQI
19th Jul 20266410 PMAQI
19th Jul 20266811 PMAQI
20th Jul 20266412 AMAQI
20th Jul 2026641 AMAQI
20th Jul 2026632 AMAQI
20th Jul 2026583 AMAQI
20th Jul 2026604 AMAQI
20th Jul 2026605 AMAQI
30°C27/34°C
20th Jul 2026626 AMAQI
20th Jul 2026657 AMAQI
20th Jul 2026608 AMAQI
20th Jul 2026649 AMAQI
20th Jul 20266610 AMAQI
20th Jul 20266711 AMAQI
20th Jul 20266512 PMAQI
20th Jul 2026681 PMAQI
20th Jul 2026672 PMAQI
20th Jul 2026663 PMAQI
20th Jul 2026674 PMAQI
20th Jul 2026695 PMAQI
20th Jul 2026666 PMAQI
20th Jul 2026667 PMAQI
20th Jul 2026638 PMAQI
20th Jul 2026669 PMAQI
20th Jul 20266710 PMAQI
20th Jul 20266611 PMAQI
21st Jul 20266412 AMAQI
21st Jul 2026651 AMAQI
21st Jul 2026622 AMAQI
21st Jul 2026603 AMAQI
21st Jul 2026564 AMAQI
21st Jul 2026565 AMAQI
30°C27/34°C
21st Jul 2026626 AMAQI
21st Jul 2026677 AMAQI
21st Jul 2026698 AMAQI
21st Jul 2026629 AMAQI
21st Jul 20266510 AMAQI
21st Jul 20265912 PMAQI
21st Jul 2026561 PMAQI
21st Jul 2026572 PMAQI
21st Jul 2026563 PMAQI
21st Jul 2026584 PMAQI
21st Jul 2026595 PMAQI
21st Jul 2026986 PMAQI
21st Jul 2026597 PMAQI
21st Jul 2026578 PMAQI
21st Jul 2026569 PMAQI
21st Jul 20265410 PMAQI
21st Jul 20265511 PMAQI
22nd Jul 20265412 AMAQI
22nd Jul 2026581 AMAQI
22nd Jul 2026562 AMAQI
22nd Jul 2026573 AMAQI
22nd Jul 2026564 AMAQI
22nd Jul 2026585 AMAQI
30°C27/33°C
22nd Jul 2026596 AMAQI
22nd Jul 2026627 AMAQI
22nd Jul 2026668 AMAQI
22nd Jul 2026649 AMAQI
22nd Jul 20266010 AMAQI
22nd Jul 20265811 AMAQI
22nd Jul 20265512 PMAQI
22nd Jul 2026571 PMAQI
22nd Jul 2026552 PMAQI
22nd Jul 2026543 PMAQI
22nd Jul 2026574 PMAQI
22nd Jul 2026605 PMAQI
22nd Jul 2026586 PMAQI
22nd Jul 2026607 PMAQI
22nd Jul 2026588 PMAQI
22nd Jul 2026679 PMAQI
22nd Jul 20266610 PMAQI
22nd Jul 20266411 PMAQI
23rd Jul 20266012 AMAQI
23rd Jul 2026651 AMAQI
23rd Jul 2026642 AMAQI
23rd Jul 2026633 AMAQI
23rd Jul 2026624 AMAQI
23rd Jul 2026595 AMAQI
30°C27/34°C
23rd Jul 2026656 AMAQI
23rd Jul 2026667 AMAQI
23rd Jul 2026658 AMAQI
23rd Jul 2026659 AMAQI
23rd Jul 20266210 AMAQI
23rd Jul 20265811 AMAQI
23rd Jul 20266012 PMAQI
23rd Jul 2026621 PMAQI
23rd Jul 2026552 PMAQI
23rd Jul 2026583 PMAQI
23rd Jul 2026564 PMAQI
23rd Jul 2026505 PMAQI
23rd Jul 2026466 PMAQI
23rd Jul 2026497 PMAQI
23rd Jul 2026548 PMAQI
23rd Jul 2026659 PMAQI
23rd Jul 20266610 PMAQI
23rd Jul 20266411 PMAQI
24th Jul 20266512 AMAQI
24th Jul 2026621 AMAQI
24th Jul 2026602 AMAQI
24th Jul 2026593 AMAQI
24th Jul 2026604 AMAQI
24th Jul 2026625 AMAQI
30°C27/34°C
24th Jul 2026626 AMAQI
24th Jul 2026597 AMAQI
24th Jul 2026658 AMAQI
24th Jul 2026659 AMAQI
24th Jul 20266010 AMAQI
24th Jul 20265911 AMAQI
24th Jul 20265712 PMAQI
24th Jul 2026571 PMAQI
24th Jul 2026542 PMAQI
24th Jul 2026543 PMAQI
24th Jul 2026534 PMAQI
24th Jul 2026525 PMAQI
24th Jul 2026516 PMAQI
24th Jul 2026497 PMAQI
24th Jul 2026518 PMAQI
24th Jul 2026589 PMAQI
24th Jul 20266210 PMAQI
24th Jul 20266211 PMAQI
25th Jul 20266512 AMAQI
25th Jul 2026671 AMAQI
25th Jul 2026642 AMAQI
25th Jul 2026603 AMAQI
25th Jul 2026594 AMAQI
25th Jul 2026635 AMAQI
29°C27/33°C
25th Jul 2026626 AMAQI
25th Jul 2026567 AMAQI
25th Jul 2026598 AMAQI
25th Jul 2026579 AMAQI
25th Jul 20265410 AMAQI
25th Jul 20265011 AMAQI
25th Jul 20265112 PMAQI
25th Jul 2026491 PMAQI
25th Jul 2026502 PMAQI
25th Jul 2026443 PMAQI
25th Jul 2026464 PMAQI
25th Jul 2026465 PMAQI
25th Jul 2026486 PMAQI
25th Jul 2026497 PMAQI
25th Jul 2026538 PMAQI
25th Jul 2026549 PMAQI
25th Jul 20265510 PMAQI
25th Jul 20266711 PMAQI
26th Jul 20267412 AMAQI
26th Jul 2026691 AMAQI
26th Jul 2026702 AMAQI
26th Jul 2026653 AMAQI
26th Jul 2026684 AMAQI
26th Jul 2026645 AMAQI
29°C26/31°C
26th Jul 2026646 AMAQI
26th Jul 2026627 AMAQI
26th Jul 2026588 AMAQI
26th Jul 2026599 AMAQI
26th Jul 20265810 AMAQI
26th Jul 20265511 AMAQI
26th Jul 20265312 PMAQI
26th Jul 2026501 PMAQI
26th Jul 2026512 PMAQI
26th Jul 2026443 PMAQI
26th Jul 2026444 PMAQI
26th Jul 2026405 PMAQI
26th Jul 2026386 PMAQI
26th Jul 2026427 PMAQI
26th Jul 2026408 PMAQI
26th Jul 2026489 PMAQI
26th Jul 20265110 PMAQI
26th Jul 20265111 PMAQI
27th Jul 20265212 AMAQI
27th Jul 2026481 AMAQI
27th Jul 2026542 AMAQI
27th Jul 2026553 AMAQI
27th Jul 2026554 AMAQI
27th Jul 2026485 AMAQI
29°C26/31°C
27th Jul 2026546 AMAQI
27th Jul 2026597 AMAQI
27th Jul 2026528 AMAQI
27th Jul 2026549 AMAQI
27th Jul 20266410 AMAQI
27th Jul 20266011 AMAQI
27th Jul 20265612 PMAQI
27th Jul 2026511 PMAQI
27th Jul 2026422 PMAQI
27th Jul 2026333 PMAQI
27th Jul 2026254 PMAQI
27th Jul 2026255 PMAQI
27th Jul 2026316 PMAQI
27th Jul 2026337 PMAQI
27th Jul 2026388 PMAQI
27th Jul 2026449 PMAQI
27th Jul 20263810 PMAQI
27th Jul 20262911 PMAQI
28th Jul 20262712 AMAQI
28th Jul 2026251 AMAQI
28th Jul 2026232 AMAQI
28th Jul 2026253 AMAQI
28th Jul 2026294 AMAQI
28th Jul 2026315 AMAQI
30°C27/33°C
28th Jul 2026256 AMAQI
28th Jul 2026277 AMAQI
28th Jul 2026298 AMAQI
28th Jul 2026299 AMAQI
28th Jul 20263110 AMAQI
28th Jul 20262911 AMAQI
28th Jul 20264012 PMAQI
28th Jul 2026341 PMAQI
28th Jul 2026292 PMAQI
28th Jul 2026293 PMAQI
28th Jul 2026294 PMAQI
28th Jul 2026275 PMAQI
28th Jul 2026296 PMAQI
28th Jul 2026297 PMAQI
28th Jul 2026368 PMAQI
28th Jul 2026409 PMAQI
28th Jul 20264210 PMAQI
28th Jul 20264211 PMAQI
29th Jul 20263412 AMAQI
29th Jul 2026231 AMAQI
29th Jul 2026232 AMAQI
29th Jul 2026293 AMAQI
29th Jul 2026274 AMAQI
29th Jul 2026255 AMAQI
30°C27/34°C
29th Jul 2026256 AMAQI
29th Jul 2026367 AMAQI
29th Jul 2026308 AMAQI
29th Jul 2026219 AMAQI
29th Jul 20263210 AMAQI
29th Jul 20263211 AMAQI
29th Jul 20265212 PMAQI
29th Jul 2026251 PMAQI
29th Jul 2026272 PMAQI
29th Jul 2026253 PMAQI
29th Jul 2026254 PMAQI
29th Jul 2026255 PMAQI
29th Jul 2026326 PMAQI
29th Jul 2026257 PMAQI
29th Jul 2026238 PMAQI
29th Jul 2026239 PMAQI
29th Jul 20262510 PMAQI
29th Jul 20262711 PMAQI
30th Jul 20263612 AMAQI
30th Jul 2026381 AMAQI
30th Jul 2026332 AMAQI
30th Jul 2026333 AMAQI
30th Jul 2026294 AMAQI
30th Jul 2026315 AMAQI
28°C27/31°C
30th Jul 2026386 AMAQI
30th Jul 2026317 AMAQI
30th Jul 2026298 AMAQI
30th Jul 2026259 AMAQI
30th Jul 20263410 AMAQI
30th Jul 20262511 AMAQI
30th Jul 20262112 PMAQI
30th Jul 2026271 PMAQI
30th Jul 2026232 PMAQI
30th Jul 2026273 PMAQI
30th Jul 2026254 PMAQI
30th Jul 2026255 PMAQI
30th Jul 2026236 PMAQI
30th Jul 2026217 PMAQI
30th Jul 2026218 PMAQI
30th Jul 2026219 PMAQI
30th Jul 20262510 PMAQI
30th Jul 20263611 PMAQI
31st Jul 20263312 AMAQI
31st Jul 2026331 AMAQI
31st Jul 2026332 AMAQI
31st Jul 2026363 AMAQI
31st Jul 2026344 AMAQI
31st Jul 2026335 AMAQI
29°C27/32°C
31st Jul 2026336 AMAQI
31st Jul 2026277 AMAQI
31st Jul 2026338 AMAQI
31st Jul 2026299 AMAQI
31st Jul 20262910 AMAQI
31st Jul 20263611 AMAQI
31st Jul 20263412 PMAQI
31st Jul 2026271 PMAQI
31st Jul 2026322 PMAQI
31st Jul 2026293 PMAQI
31st Jul 2026314 PMAQI
31st Jul 2026295 PMAQI
31st Jul 2026366 PMAQI
31st Jul 2026347 PMAQI
31st Jul 2026298 PMAQI
31st Jul 2026299 PMAQI
31st Jul 20262510 PMAQI
31st Jul 20262511 PMAQI
1st Aug 20262712 AMAQI
1st Aug 2026291 AMAQI
1st Aug 2026292 AMAQI
1st Aug 2026253 AMAQI
1st Aug 2026254 AMAQI
1st Aug 2026325 AMAQI
28°C26/32°C
1st Aug 2026256 AMAQI
1st Aug 2026327 AMAQI
1st Aug 2026278 AMAQI
1st Aug 2026219 AMAQI
1st Aug 20262510 AMAQI
1st Aug 20262511 AMAQI
1st Aug 20262512 PMAQI
1st Aug 2026211 PMAQI
1st Aug 2026212 PMAQI
1st Aug 2026213 PMAQI
1st Aug 2026214 PMAQI
1st Aug 2026255 PMAQI
1st Aug 2026216 PMAQI
1st Aug 2026237 PMAQI
1st Aug 2026218 PMAQI
1st Aug 2026239 PMAQI
1st Aug 20262310 PMAQI
1st Aug 20262111 PMAQI
2nd Aug 20262112 AMAQI
2nd Aug 2026211 AMAQI
2nd Aug 2026212 AMAQI
2nd Aug 2026233 AMAQI
2nd Aug 2026344 AMAQI
2nd Aug 2026425 AMAQI
28°C26/31°C
2nd Aug 2026326 AMAQI
2nd Aug 2026237 AMAQI
2nd Aug 2026348 AMAQI
2nd Aug 2026279 AMAQI
2nd Aug 20262110 AMAQI
2nd Aug 20262111 AMAQI
2nd Aug 20262112 PMAQI
2nd Aug 2026251 PMAQI
2nd Aug 2026232 PMAQI
2nd Aug 2026213 PMAQI
2nd Aug 2026214 PMAQI
2nd Aug 2026255 PMAQI
2nd Aug 2026276 PMAQI
2nd Aug 2026277 PMAQI
2nd Aug 2026238 PMAQI
2nd Aug 2026239 PMAQI
2nd Aug 20262510 PMAQI
2nd Aug 20262511 PMAQI
3rd Aug 20262112 AMAQI
3rd Aug 2026301 AMAQI
3rd Aug 2026212 AMAQI
3rd Aug 2026233 AMAQI
3rd Aug 2026214 AMAQI
3rd Aug 2026215 AMAQI
28°C26/30°C
3rd Aug 2026236 AMAQI
3rd Aug 2026217 AMAQI
3rd Aug 2026238 AMAQI
3rd Aug 2026239 AMAQI
3rd Aug 20262110 AMAQI
3rd Aug 20262511 AMAQI
3rd Aug 20262512 PMAQI
3rd Aug 2026211 PMAQI
3rd Aug 2026232 PMAQI
3rd Aug 2026233 PMAQI
3rd Aug 2026234 PMAQI
3rd Aug 2026215 PMAQI
3rd Aug 2026216 PMAQI
3rd Aug 2026257 PMAQI
3rd Aug 2026238 PMAQI
3rd Aug 2026239 PMAQI
3rd Aug 20262110 PMAQI
3rd Aug 20262111 PMAQI
4th Aug 20262112 AMAQI
4th Aug 2026211 AMAQI
4th Aug 2026212 AMAQI
4th Aug 2026233 AMAQI
4th Aug 2026234 AMAQI
4th Aug 2026235 AMAQI
27°C25/31°C
4th Aug 2026236 AMAQI
4th Aug 2026217 AMAQI
4th Aug 2026218 AMAQI
4th Aug 2026219 AMAQI
4th Aug 20262110 AMAQI
4th Aug 20262111 AMAQI
4th Aug 20262312 PMAQI
4th Aug 2026231 PMAQI
4th Aug 2026252 PMAQI
4th Aug 2026253 PMAQI
4th Aug 2026234 PMAQI
4th Aug 2026215 PMAQI
4th Aug 2026236 PMAQI
4th Aug 2026217 PMAQI
4th Aug 2026238 PMAQI
4th Aug 2026259 PMAQI
4th Aug 20262910 PMAQI
4th Aug 20262511 PMAQI
5th Aug 20263212 AMAQI
5th Aug 2026211 AMAQI
5th Aug 2026272 AMAQI
5th Aug 2026293 AMAQI
5th Aug 2026294 AMAQI
5th Aug 2026295 AMAQI
28°C26/31°C
5th Aug 2026216 AMAQI
5th Aug 2026257 AMAQI
5th Aug 2026258 AMAQI
5th Aug 2026239 AMAQI
5th Aug 20262910 AMAQI
5th Aug 20262911 AMAQI
5th Aug 20262912 PMAQI
5th Aug 2026291 PMAQI
5th Aug 2026292 PMAQI
5th Aug 2026253 PMAQI
5th Aug 2026254 PMAQI
5th Aug 2026255 PMAQI
5th Aug 2026256 PMAQI
5th Aug 2026337 PMAQI
5th Aug 2026258 PMAQI
5th Aug 2026339 PMAQI
5th Aug 20262110 PMAQI
5th Aug 20262711 PMAQI
6th Aug 20262512 AMAQI
6th Aug 2026291 AMAQI
6th Aug 2026302 AMAQI
6th Aug 2026313 AMAQI
6th Aug 2026294 AMAQI
6th Aug 2026215 AMAQI
28°C26/30°C
6th Aug 2026236 AMAQI
6th Aug 2026257 AMAQI
6th Aug 2026298 AMAQI
6th Aug 2026219 AMAQI
6th Aug 20262110 AMAQI
6th Aug 20262111 AMAQI
6th Aug 20262112 PMAQI
6th Aug 2026271 PMAQI
6th Aug 2026272 PMAQI
6th Aug 2026233 PMAQI
6th Aug 2026294 PMAQI
6th Aug 2026365 PMAQI
6th Aug 2026446 PMAQI
6th Aug 2026367 PMAQI
6th Aug 2026218 PMAQI
6th Aug 2026299 PMAQI
6th Aug 20262510 PMAQI
6th Aug 20262511 PMAQI
7th Aug 20262912 AMAQI
7th Aug 2026331 AMAQI
7th Aug 2026382 AMAQI
7th Aug 2026293 AMAQI
7th Aug 2026314 AMAQI
7th Aug 2026315 AMAQI
28°C26/30°C
7th Aug 2026336 AMAQI
7th Aug 2026297 AMAQI
7th Aug 2026298 AMAQI
7th Aug 2026299 AMAQI
7th Aug 20262910 AMAQI
7th Aug 20263411 AMAQI
7th Aug 20263812 PMAQI
7th Aug 2026291 PMAQI
7th Aug 2026292 PMAQI
7th Aug 2026313 PMAQI
7th Aug 2026274 PMAQI
7th Aug 2026255 PMAQI
7th Aug 2026296 PMAQI
7th Aug 2026317 PMAQI
7th Aug 2026238 PMAQI
7th Aug 2026219 PMAQI
7th Aug 20263310 PMAQI
7th Aug 20262511 PMAQI
8th Aug 20262912 AMAQI
8th Aug 2026291 AMAQI
8th Aug 2026252 AMAQI
8th Aug 2026293 AMAQI
8th Aug 2026254 AMAQI
8th Aug 2026235 AMAQI
28°C26/30°C
8th Aug 2026216 AMAQI
8th Aug 2026217 AMAQI
8th Aug 2026238 AMAQI
8th Aug 2026279 AMAQI
8th Aug 20262510 AMAQI
8th Aug 20262311 AMAQI
8th Aug 20262112 PMAQI
8th Aug 2026211 PMAQI
8th Aug 2026252 PMAQI
8th Aug 2026213 PMAQI
8th Aug 2026274 PMAQI
8th Aug 2026275 PMAQI
8th Aug 2026216 PMAQI
8th Aug 2026257 PMAQI
8th Aug 2026298 PMAQI
8th Aug 2026239 PMAQI
8th Aug 20262510 PMAQI
8th Aug 20264011 PMAQI
9th Aug 20266012 AMAQI
9th Aug 2026661 AMAQI
9th Aug 2026542 AMAQI
9th Aug 2026503 AMAQI
9th Aug 2026404 AMAQI
9th Aug 2026335 AMAQI
28°C26/31°C
9th Aug 2026316 AMAQI
9th Aug 2026317 AMAQI
9th Aug 2026318 AMAQI
9th Aug 2026299 AMAQI
9th Aug 20263110 AMAQI
9th Aug 20263811 AMAQI
9th Aug 20263812 PMAQI
9th Aug 2026421 PMAQI
9th Aug 2026522 PMAQI
9th Aug 2026543 PMAQI
9th Aug 2026534 PMAQI
9th Aug 2026545 PMAQI
9th Aug 2026626 PMAQI
9th Aug 2026677 PMAQI
9th Aug 2026758 PMAQI
9th Aug 2026699 PMAQI
9th Aug 20267210 PMAQI
9th Aug 20267211 PMAQI
10th Aug 20267612 AMAQI
10th Aug 2026841 AMAQI
10th Aug 2026642 AMAQI
10th Aug 2026483 AMAQI
10th Aug 2026684 AMAQI
10th Aug 2026685 AMAQI
29°C26/32°C
10th Aug 2026696 AMAQI
10th Aug 2026607 AMAQI
10th Aug 2026518 AMAQI
10th Aug 2026539 AMAQI
10th Aug 20265310 AMAQI
10th Aug 20262111 AMAQI
10th Aug 20261912 PMAQI
10th Aug 2026251 PMAQI
10th Aug 2026332 PMAQI
10th Aug 2026463 PMAQI
10th Aug 2026484 PMAQI
10th Aug 2026485 PMAQI
10th Aug 2026556 PMAQI
10th Aug 2026557 PMAQI
10th Aug 2026648 PMAQI
10th Aug 2026609 PMAQI
10th Aug 20265710 PMAQI
10th Aug 20267011 PMAQI
11th Aug 20267612 AMAQI
11th Aug 2026731 AMAQI
11th Aug 2026862 AMAQI
11th Aug 2026883 AMAQI
11th Aug 2026874 AMAQI
11th Aug 20261025 AMAQI
30°C28/32°C
11th Aug 20261036 AMAQI
11th Aug 20261007 AMAQI
11th Aug 2026868 AMAQI
11th Aug 2026709 AMAQI
11th Aug 20266210 AMAQI
11th Aug 20265911 AMAQI
11th Aug 20265412 PMAQI
11th Aug 2026511 PMAQI
11th Aug 2026552 PMAQI
11th Aug 2026573 PMAQI
11th Aug 2026564 PMAQI
11th Aug 2026545 PMAQI
11th Aug 2026556 PMAQI
11th Aug 2026537 PMAQI
11th Aug 2026428 PMAQI
11th Aug 2026369 PMAQI
11th Aug 20263110 PMAQI
11th Aug 20264811 PMAQI
12th Aug 20265412 AMAQI
12th Aug 2026681 AMAQI
12th Aug 2026712 AMAQI
12th Aug 2026663 AMAQI
12th Aug 2026674 AMAQI
12th Aug 2026705 AMAQI
30°C28/33°C
12th Aug 2026666 AMAQI
12th Aug 2026567 AMAQI
12th Aug 2026428 AMAQI
12th Aug 2026279 AMAQI
12th Aug 20262310 AMAQI
12th Aug 20262111 AMAQI
12th Aug 20262512 PMAQI
12th Aug 2026211 PMAQI
12th Aug 2026212 PMAQI
12th Aug 2026103 PMAQI
12th Aug 2026104 PMAQI
12th Aug 2026175 PMAQI
12th Aug 2026106 PMAQI
12th Aug 2026107 PMAQI
12th Aug 2026108 PMAQI
12th Aug 2026139 PMAQI
12th Aug 20261210 PMAQI
12th Aug 20261211 PMAQI
13th Aug 20261312 AMAQI
13th Aug 2026251 AMAQI
13th Aug 2026252 AMAQI
13th Aug 2026193 AMAQI
13th Aug 2026194 AMAQI
13th Aug 2026215 AMAQI
30°C28/33°C
13th Aug 2026116 AMAQI
13th Aug 2026127 AMAQI
13th Aug 2026128 AMAQI
13th Aug 2026219 AMAQI
13th Aug 20262910 AMAQI
13th Aug 20262911 AMAQI
13th Aug 20262712 PMAQI
13th Aug 2026271 PMAQI
13th Aug 2026292 PMAQI
13th Aug 2026313 PMAQI
13th Aug 2026464 PMAQI
13th Aug 2026295 PMAQI
13th Aug 2026256 PMAQI
13th Aug 2026367 PMAQI
13th Aug 2026428 PMAQI
13th Aug 2026499 PMAQI
13th Aug 20265010 PMAQI
13th Aug 20263111 PMAQI
14th Aug 20263312 AMAQI
14th Aug 2026361 AMAQI
14th Aug 2026422 AMAQI
14th Aug 2026513 AMAQI
14th Aug 2026524 AMAQI
14th Aug 2026545 AMAQI
30°C28/33°C
14th Aug 2026556 AMAQI
14th Aug 2026577 AMAQI
14th Aug 2026568 AMAQI
14th Aug 2026589 AMAQI
14th Aug 20265710 AMAQI
14th Aug 20265311 AMAQI
14th Aug 20265112 PMAQI
14th Aug 2026461 PMAQI
14th Aug 2026462 PMAQI
14th Aug 2026403 PMAQI
14th Aug 2026464 PMAQI
14th Aug 2026465 PMAQI
14th Aug 2026516 PMAQI
14th Aug 2026497 PMAQI
14th Aug 2026488 PMAQI
14th Aug 2026429 PMAQI
14th Aug 20264810 PMAQI
14th Aug 20264611 PMAQI
15th Aug 20264212 AMAQI
15th Aug 2026441 AMAQI
15th Aug 2026462 AMAQI
15th Aug 2026533 AMAQI
15th Aug 2026514 AMAQI
15th Aug 2026425 AMAQI
29°C27/33°C
15th Aug 2026426 AMAQI
15th Aug 2026407 AMAQI
15th Aug 2026408 AMAQI
15th Aug 2026409 AMAQI
15th Aug 20264010 AMAQI
15th Aug 20263811 AMAQI
15th Aug 20263312 PMAQI
15th Aug 2026331 PMAQI
15th Aug 2026332 PMAQI
15th Aug 2026383 PMAQI
15th Aug 2026384 PMAQI
15th Aug 2026405 PMAQI
15th Aug 2026336 PMAQI
15th Aug 2026387 PMAQI
15th Aug 2026338 PMAQI
15th Aug 2026369 PMAQI
15th Aug 20264410 PMAQI
15th Aug 20265111 PMAQI
16th Aug 20265312 AMAQI
16th Aug 2026491 AMAQI
16th Aug 2026502 AMAQI
16th Aug 2026513 AMAQI
16th Aug 2026484 AMAQI
16th Aug 2026485 AMAQI
30°C27/32°C
16th Aug 2026516 AMAQI
16th Aug 2026507 AMAQI
16th Aug 2026508 AMAQI
16th Aug 2026499 AMAQI
16th Aug 20264410 AMAQI
16th Aug 20264211 AMAQI
16th Aug 20264412 PMAQI
16th Aug 2026421 PMAQI
16th Aug 2026422 PMAQI
16th Aug 2026423 PMAQI
16th Aug 2026404 PMAQI
16th Aug 2026365 PMAQI
16th Aug 2026406 PMAQI
16th Aug 2026387 PMAQI
16th Aug 2026388 PMAQI
16th Aug 2026409 PMAQI
16th Aug 20263310 PMAQI
16th Aug 20263111 PMAQI
17th Aug 20263612 AMAQI
17th Aug 2026361 AMAQI
17th Aug 2026312 AMAQI
17th Aug 2026313 AMAQI
17th Aug 2026314 AMAQI
17th Aug 2026335 AMAQI
29°C27/32°C
17th Aug 2026336 AMAQI
6 AM17th Aug 2026337 AMAQI
17th Aug 2026338 AMAQI
17th Aug 2026319 AMAQI
17th Aug 20262910 AMAQI
17th Aug 20263111 AMAQI
17th Aug 20263112 PMAQI
12 PM17th Aug 2026331 PMAQI
17th Aug 2026332 PMAQI
17th Aug 2026313 PMAQI
17th Aug 2026314 PMAQI
17th Aug 2026315 PMAQI
17th Aug 2026336 PMAQI
17th Aug 2026317 PMAQI
7 PM17th Aug 2026338 PMAQI
17th Aug 2026319 PMAQI
17th Aug 20263810 PMAQI
17th Aug 20264211 PMAQI
12 AM
5 AM
22°C21/22°C
Day time
Avg. Highest Time
6 AM - 8 AM
44AQI
3 hours / Day
90 hours / Month
Avg. Lowest Time
11 AM - 5 PM
38AQI
7 hours / Day
210 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 6 AM to 8 AM (Avg. 44), while the lowest AQI was between 11 AM to 5 PM (Avg. 38).
Night time
Avg. Highest Time
12 AM - 5 AM
45AQI
6 hours / Day
180 hours / Month
Avg. Lowest Time
8 PM - 11 PM
41AQI
4 hours / Day
120 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 12 AM to 5 AM (Avg. 45), while the lowest AQI was between 8 PM to 11 PM (Avg. 41).
2026 Days Vs Air Quality
Hainan University, Haikou, Hainan, China
2026
50%
115
50%
114
Total number of days with different AQI categories in last 229 days in 2026 (136 days remaining)
Good
115 DaysModerate
114 DaysPoor
0 DaysUnhealthy
0 DaysSevere
0 DaysHazardous
0 DaysUnder WHO’s Safe Air Quality Limits: 50%
Health Risk Level:
Considerable
In 2026, 50% of 229 days were within WHO’s safe air quality limits, and 50% exceeded them. The risk of health issues is Considerable, with potential for conditions in sensitive individuals.
Annual Air Quality Insights
Hainan University, Haikou, Hainan, 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
50AQI (US)
50AQI (US)
2nd January 2026
76AQI (US)
76AQI (US)
3rd January 2026
52AQI (US)
52AQI (US)
4th January 2026
58AQI (US)
58AQI (US)
5th January 2026
72AQI (US)
72AQI (US)
6th January 2026
94AQI (US)
94AQI (US)
7th January 2026
79AQI (US)
79AQI (US)
8th January 2026
69AQI (US)
69AQI (US)
9th January 2026
63AQI (US)
63AQI (US)
10th January 2026
66AQI (US)
66AQI (US)
11th January 2026
67AQI (US)
67AQI (US)
12th January 2026
67AQI (US)
67AQI (US)
13th January 2026
77AQI (US)
77AQI (US)
14th January 2026
94AQI (US)
94AQI (US)
15th January 2026
68AQI (US)
68AQI (US)
16th January 2026
66AQI (US)
66AQI (US)
17th January 2026
75AQI (US)
75AQI (US)
18th January 2026
71AQI (US)
71AQI (US)
19th January 2026
59AQI (US)
59AQI (US)
20th January 2026
63AQI (US)
63AQI (US)
21st January 2026
83AQI (US)
83AQI (US)
22nd January 2026
75AQI (US)
75AQI (US)
23rd January 2026
72AQI (US)
72AQI (US)
24th January 2026
85AQI (US)
85AQI (US)
25th January 2026
32AQI (US)
32AQI (US)
26th January 2026
39AQI (US)
39AQI (US)
27th January 2026
59AQI (US)
59AQI (US)
28th January 2026
92AQI (US)
92AQI (US)
29th January 2026
46AQI (US)
46AQI (US)
30th January 2026
46AQI (US)
46AQI (US)
31st January 2026
44AQI (US)
44AQI (US)
1st February 2026
56AQI (US)
56AQI (US)
2nd February 2026
64AQI (US)
64AQI (US)
3rd February 2026
47AQI (US)
47AQI (US)
4th February 2026
57AQI (US)
57AQI (US)
5th February 2026
57AQI (US)
57AQI (US)
6th February 2026
38AQI (US)
38AQI (US)
7th February 2026
55AQI (US)
55AQI (US)
8th February 2026
62AQI (US)
62AQI (US)
9th February 2026
55AQI (US)
55AQI (US)
10th February 2026
52AQI (US)
52AQI (US)
11th February 2026
43AQI (US)
43AQI (US)
12th February 2026
60AQI (US)
60AQI (US)
13th February 2026
65AQI (US)
65AQI (US)
14th February 2026
62AQI (US)
62AQI (US)
15th February 2026
51AQI (US)
51AQI (US)
16th February 2026
56AQI (US)
56AQI (US)
17th February 2026
56AQI (US)
56AQI (US)
18th February 2026
76AQI (US)
76AQI (US)
19th February 2026
58AQI (US)
58AQI (US)
20th February 2026
61AQI (US)
61AQI (US)
21st February 2026
59AQI (US)
59AQI (US)
22nd February 2026
46AQI (US)
46AQI (US)
23rd February 2026
63AQI (US)
63AQI (US)
24th February 2026
70AQI (US)
70AQI (US)
25th February 2026
64AQI (US)
64AQI (US)
26th February 2026
51AQI (US)
51AQI (US)
27th February 2026
66AQI (US)
66AQI (US)
28th February 2026
24AQI (US)
24AQI (US)
1st March 2026
27AQI (US)
27AQI (US)
2nd March 2026
47AQI (US)
47AQI (US)
3rd March 2026
37AQI (US)
37AQI (US)
4th March 2026
14AQI (US)
14AQI (US)
5th March 2026
48AQI (US)
48AQI (US)
6th March 2026
51AQI (US)
51AQI (US)
7th March 2026
57AQI (US)
57AQI (US)
8th March 2026
66AQI (US)
66AQI (US)
9th March 2026
57AQI (US)
57AQI (US)
10th March 2026
39AQI (US)
39AQI (US)
11th March 2026
73AQI (US)
73AQI (US)
12th March 2026
60AQI (US)
60AQI (US)
13th March 2026
55AQI (US)
55AQI (US)
14th March 2026
62AQI (US)
62AQI (US)
15th March 2026
61AQI (US)
61AQI (US)
16th March 2026
57AQI (US)
57AQI (US)
17th March 2026
49AQI (US)
49AQI (US)
18th March 2026
45AQI (US)
45AQI (US)
19th March 2026
45AQI (US)
45AQI (US)
20th March 2026
57AQI (US)
57AQI (US)
21st March 2026
48AQI (US)
48AQI (US)
22nd March 2026
50AQI (US)
50AQI (US)
23rd March 2026
62AQI (US)
62AQI (US)
24th March 2026
57AQI (US)
57AQI (US)
25th March 2026
54AQI (US)
54AQI (US)
26th March 2026
54AQI (US)
54AQI (US)
27th March 2026
60AQI (US)
60AQI (US)
28th March 2026
71AQI (US)
71AQI (US)
29th March 2026
62AQI (US)
62AQI (US)
30th March 2026
47AQI (US)
47AQI (US)
31st March 2026
61AQI (US)
61AQI (US)
1st April 2026
71AQI (US)
71AQI (US)
2nd April 2026
71AQI (US)
71AQI (US)
3rd April 2026
76AQI (US)
76AQI (US)
4th April 2026
72AQI (US)
72AQI (US)
5th April 2026
92AQI (US)
92AQI (US)
6th April 2026
88AQI (US)
88AQI (US)
7th April 2026
90AQI (US)
90AQI (US)
8th April 2026
77AQI (US)
77AQI (US)
9th April 2026
61AQI (US)
61AQI (US)
10th April 2026
55AQI (US)
55AQI (US)
11th April 2026
82AQI (US)
82AQI (US)
12th April 2026
77AQI (US)
77AQI (US)
13th April 2026
71AQI (US)
71AQI (US)
14th April 2026
73AQI (US)
73AQI (US)
15th April 2026
43AQI (US)
43AQI (US)
16th April 2026
41AQI (US)
41AQI (US)
17th April 2026
55AQI (US)
55AQI (US)
18th April 2026
52AQI (US)
52AQI (US)
19th April 2026
61AQI (US)
61AQI (US)
20th April 2026
64AQI (US)
64AQI (US)
21st April 2026
60AQI (US)
60AQI (US)
22nd April 2026
62AQI (US)
62AQI (US)
23rd April 2026
92AQI (US)
92AQI (US)
24th April 2026
35AQI (US)
35AQI (US)
25th April 2026
50AQI (US)
50AQI (US)
26th April 2026
51AQI (US)
51AQI (US)
27th April 2026
40AQI (US)
40AQI (US)
28th April 2026
52AQI (US)
52AQI (US)
29th April 2026
52AQI (US)
52AQI (US)
30th April 2026
25AQI (US)
25AQI (US)
1st May 2026
43AQI (US)
43AQI (US)
2nd May 2026
44AQI (US)
44AQI (US)
3rd May 2026
56AQI (US)
56AQI (US)
4th May 2026
45AQI (US)
45AQI (US)
5th May 2026
33AQI (US)
33AQI (US)
6th May 2026
31AQI (US)
31AQI (US)
7th May 2026
42AQI (US)
42AQI (US)
8th May 2026
46AQI (US)
46AQI (US)
9th May 2026
46AQI (US)
46AQI (US)
10th May 2026
47AQI (US)
47AQI (US)
11th May 2026
36AQI (US)
36AQI (US)
12th May 2026
39AQI (US)
39AQI (US)
13th May 2026
40AQI (US)
40AQI (US)
14th May 2026
56AQI (US)
56AQI (US)
15th May 2026
47AQI (US)
47AQI (US)
16th May 2026
70AQI (US)
70AQI (US)
17th May 2026
60AQI (US)
60AQI (US)
18th May 2026
55AQI (US)
55AQI (US)
19th May 2026
44AQI (US)
44AQI (US)
20th May 2026
60AQI (US)
60AQI (US)
21st May 2026
72AQI (US)
72AQI (US)
22nd May 2026
76AQI (US)
76AQI (US)
23rd May 2026
69AQI (US)
69AQI (US)
24th May 2026
66AQI (US)
66AQI (US)
25th May 2026
60AQI (US)
60AQI (US)
26th May 2026
45AQI (US)
45AQI (US)
27th May 2026
31AQI (US)
31AQI (US)
28th May 2026
29AQI (US)
29AQI (US)
29th May 2026
31AQI (US)
31AQI (US)
30th May 2026
28AQI (US)
28AQI (US)
31st May 2026
21AQI (US)
21AQI (US)
1st June 2026
30AQI (US)
30AQI (US)
2nd June 2026
34AQI (US)
34AQI (US)
3rd June 2026
35AQI (US)
35AQI (US)
4th June 2026
27AQI (US)
27AQI (US)
5th June 2026
25AQI (US)
25AQI (US)
6th June 2026
25AQI (US)
25AQI (US)
7th June 2026
23AQI (US)
23AQI (US)
8th June 2026
23AQI (US)
23AQI (US)
9th June 2026
28AQI (US)
28AQI (US)
10th June 2026
38AQI (US)
38AQI (US)
11th June 2026
54AQI (US)
54AQI (US)
12th June 2026
33AQI (US)
33AQI (US)
13th June 2026
29AQI (US)
29AQI (US)
14th June 2026
25AQI (US)
25AQI (US)
15th June 2026
43AQI (US)
43AQI (US)
16th June 2026
32AQI (US)
32AQI (US)
17th June 2026
37AQI (US)
37AQI (US)
18th June 2026
44AQI (US)
44AQI (US)
19th June 2026
28AQI (US)
28AQI (US)
20th June 2026
24AQI (US)
24AQI (US)
21st June 2026
22AQI (US)
22AQI (US)
22nd June 2026
22AQI (US)
22AQI (US)
23rd June 2026
37AQI (US)
37AQI (US)
24th June 2026
47AQI (US)
47AQI (US)
25th June 2026
52AQI (US)
52AQI (US)
26th June 2026
41AQI (US)
41AQI (US)
27th June 2026
40AQI (US)
40AQI (US)
28th June 2026
36AQI (US)
36AQI (US)
29th June 2026
24AQI (US)
24AQI (US)
30th June 2026
23AQI (US)
23AQI (US)
1st July 2026
24AQI (US)
24AQI (US)
2nd July 2026
24AQI (US)
24AQI (US)
3rd July 2026
22AQI (US)
22AQI (US)
4th July 2026
24AQI (US)
24AQI (US)
5th July 2026
24AQI (US)
24AQI (US)
6th July 2026
24AQI (US)
24AQI (US)
7th July 2026
22AQI (US)
22AQI (US)
8th July 2026
25AQI (US)
25AQI (US)
9th July 2026
24AQI (US)
24AQI (US)
10th July 2026
27AQI (US)
27AQI (US)
11th July 2026
29AQI (US)
29AQI (US)
12th July 2026
23AQI (US)
23AQI (US)
13th July 2026
25AQI (US)
25AQI (US)
14th July 2026
32AQI (US)
32AQI (US)
15th July 2026
36AQI (US)
36AQI (US)
16th July 2026
26AQI (US)
26AQI (US)
17th July 2026
34AQI (US)
34AQI (US)
18th July 2026
45AQI (US)
45AQI (US)
19th July 2026
58AQI (US)
58AQI (US)
20th July 2026
65AQI (US)
65AQI (US)
21st July 2026
61AQI (US)
61AQI (US)
22nd July 2026
59AQI (US)
59AQI (US)
23rd July 2026
60AQI (US)
60AQI (US)
24th July 2026
58AQI (US)
58AQI (US)
25th July 2026
55AQI (US)
55AQI (US)
26th July 2026
55AQI (US)
55AQI (US)
27th July 2026
46AQI (US)
46AQI (US)
28th July 2026
31AQI (US)
31AQI (US)
29th July 2026
28AQI (US)
28AQI (US)
30th July 2026
28AQI (US)
28AQI (US)
31st July 2026
31AQI (US)
31AQI (US)
1st August 2026
24AQI (US)
24AQI (US)
2nd August 2026
25AQI (US)
25AQI (US)
3rd August 2026
23AQI (US)
23AQI (US)
4th August 2026
23AQI (US)
23AQI (US)
5th August 2026
27AQI (US)
27AQI (US)
6th August 2026
27AQI (US)
27AQI (US)
7th August 2026
30AQI (US)
30AQI (US)
8th August 2026
25AQI (US)
25AQI (US)
9th August 2026
50AQI (US)
50AQI (US)
10th August 2026
54AQI (US)
54AQI (US)
11th August 2026
66AQI (US)
66AQI (US)
12th August 2026
33AQI (US)
33AQI (US)
13th August 2026
27AQI (US)
27AQI (US)
14th August 2026
48AQI (US)
48AQI (US)
15th August 2026
40AQI (US)
40AQI (US)
16th August 2026
44AQI (US)
44AQI (US)
17th August 2026
33AQI (US)
33AQI (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
66AQI (US)
56AQI (US)
53AQI (US)
63AQI (US)
47AQI (US)
33AQI (US)
36AQI (US)
35AQI (US)
No. of days
Jan.Feb.Mar.Apr.MayJun.Jul.Aug.Sep.Oct.Nov.Dec.Total Days
202649AQI (US)
6
25
5
23
12
19
6
24
20
11
28
2
23
8
15
2
115
114
Highest AQI (US) recorded in
January66AQI (US)
Lowest AQI (US) recorded in
June33AQI (US)
202560AQI (US)
24
7
28
4
27
1
24
5
14
17
25
5
25
6
21
10
30
15
16
3
27
1
26
4
139
210
16
Highest AQI (US) recorded in
January87AQI (US)
Lowest AQI (US) recorded in
September37AQI (US)
202456AQI (US)
7
22
1
11
16
2
8
23
3
27
20
11
26
4
29
2
25
6
22
6
6
22
3
1
28
1
25
6
158
192
13
Highest AQI (US) recorded in
December85AQI (US)
Lowest AQI (US) recorded in
July28AQI (US)
202357AQI (US)
5
19
7
9
17
2
3
25
3
3
27
18
13
25
5
29
2
22
9
26
4
11
19
1
9
15
2
7
21
3
167
176
18
Highest AQI (US) recorded in
January83AQI (US)
Lowest AQI (US) recorded in
July35AQI (US)
202254AQI (US)
10
18
2
14
6
1
10
21
13
16
25
6
23
7
18
3
1
5
22
1
8
23
15
15
3
23
4
1
145
160
8
1
Highest AQI (US) recorded in
December75AQI (US)
Lowest AQI (US) recorded in
July31AQI (US)
202152AQI (US)
2
18
8
2
7
21
14
15
2
18
12
26
5
18
12
30
1
28
3
26
4
20
11
8
20
2
1
26
4
198
148
16
2
Highest AQI (US) recorded in
January94AQI (US)
Lowest AQI (US) recorded in
September31AQI (US)
202053AQI (US)
7
5
1
7
14
9
9
29
1
18
1
18
6
28
2
9
21
1
8
18
4
2
18
10
1
135
95
16
1
Highest AQI (US) recorded in
December89AQI (US)
Lowest AQI (US) recorded in
September33AQI (US)
Most & Least Polluted Years Over the Last 7 Years
Most Polluted Year Recorded
2025(Avg.)
60AQI (US)Least Polluted Year Recorded
2026(Avg.)
49AQI (US)Hainan University's annual 2026 AQI (US) (49) shows an average percentage change of -11.2% (improved AQI (US)) compared to previous years: 2020 (53), 2021 (52), 2022 (54), 2023 (57), 2024 (56), 2025 (60).
