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
2021
2022
2023
2024
2025
AQI
.
Days
AQI Trends: Highest and Lowest
Highest AQI recorded on
31st Aug 2023
68AQILowest AQI recorded on
31st Aug 2024
13AQISame Day Analysis (3rd August ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 1st highest AQI at 56 of Moderate air quality on the same day.
Download 2024 Annual Data
World Air Quality Report
Day & Night AQI Trend: 3rd Aug - 4th Aug 2025
Hainan University, Haikou, Hainan, China
AQI
Day
Night
.
6 AM3rd Aug 2025
7 PM
5 AM4th Aug 2025
Day time
Avg. Highest Time
11AM3rd Aug
68AQI
Avg. Lowest Time
8AM3rd Aug
54AQI
Night time
Avg. Highest Time
10PM3rd Aug
62AQI
Avg. Lowest Time
3AM4th Aug
56AQI
In the last 24 hours,
Hainan University's AQI reached its highest point of 68 at 11 AM during the Day, while the lowest point, 54, was recorded at 8 AM during the Day between 3rd Aug and 4th Aug 2025.
Day & Night AQI Trend : Jul - Aug 2025
Hainan University, Haikou, Hainan, China
JulAug
05th - 06th06th - 07th07th - 08th08th - 09th09th - 10th10th - 11th11th - 12th12th - 13th13th - 14th14th - 15th15th - 16th16th - 17th17th - 18th18th - 19th19th - 20th20th - 21st21st - 22nd22nd - 23rd23rd - 24th24th - 25th25th - 26th26th - 27th27th - 28th28th - 29th29th - 30th30th - 31st31st - 01st01st - 02nd02nd - 03rd03rd - 04th04th
Day
Night
5th Jul 2025346 AMAQI
5th Jul 2025337 AMAQI
5th Jul 2025448 AMAQI
5th Jul 2025469 AMAQI
5th Jul 20253810 AMAQI
5th Jul 20252711 AMAQI
5th Jul 20252712 PMAQI
5th Jul 2025281 PMAQI
5th Jul 2025362 PMAQI
5th Jul 2025393 PMAQI
5th Jul 2025424 PMAQI
5th Jul 2025415 PMAQI
5th Jul 2025466 PMAQI
5th Jul 2025427 PMAQI
5th Jul 2025418 PMAQI
5th Jul 2025509 PMAQI
5th Jul 20254810 PMAQI
5th Jul 20254811 PMAQI
6th Jul 20254412 AMAQI
6th Jul 2025371 AMAQI
6th Jul 2025352 AMAQI
6th Jul 2025363 AMAQI
6th Jul 2025364 AMAQI
6th Jul 2025385 AMAQI
28°C26/31°C
6th Jul 2025376 AMAQI
6th Jul 2025377 AMAQI
6th Jul 2025388 AMAQI
6th Jul 2025349 AMAQI
6th Jul 20253410 AMAQI
6th Jul 20253411 AMAQI
6th Jul 20253812 PMAQI
6th Jul 2025321 PMAQI
6th Jul 2025312 PMAQI
6th Jul 2025283 PMAQI
6th Jul 2025264 PMAQI
6th Jul 2025245 PMAQI
6th Jul 2025346 PMAQI
6th Jul 2025387 PMAQI
6th Jul 2025448 PMAQI
6th Jul 2025449 PMAQI
6th Jul 20255210 PMAQI
6th Jul 20255011 PMAQI
7th Jul 20255312 AMAQI
7th Jul 2025391 AMAQI
7th Jul 2025382 AMAQI
7th Jul 2025383 AMAQI
7th Jul 2025364 AMAQI
7th Jul 2025385 AMAQI
29°C26/31°C
7th Jul 2025386 AMAQI
7th Jul 2025387 AMAQI
7th Jul 2025478 AMAQI
7th Jul 2025429 AMAQI
7th Jul 20254010 AMAQI
7th Jul 20253411 AMAQI
7th Jul 20252612 PMAQI
7th Jul 2025281 PMAQI
7th Jul 2025282 PMAQI
7th Jul 2025283 PMAQI
7th Jul 2025294 PMAQI
7th Jul 2025305 PMAQI
7th Jul 2025326 PMAQI
7th Jul 2025367 PMAQI
7th Jul 2025378 PMAQI
7th Jul 2025459 PMAQI
7th Jul 20254510 PMAQI
7th Jul 20254211 PMAQI
8th Jul 20254212 AMAQI
8th Jul 2025411 AMAQI
8th Jul 2025402 AMAQI
8th Jul 2025393 AMAQI
8th Jul 2025384 AMAQI
8th Jul 2025385 AMAQI
29°C27/32°C
8th Jul 2025386 AMAQI
8th Jul 2025387 AMAQI
8th Jul 2025538 AMAQI
8th Jul 2025599 AMAQI
8th Jul 20255310 AMAQI
8th Jul 20255611 AMAQI
8th Jul 20255412 PMAQI
8th Jul 2025511 PMAQI
8th Jul 2025522 PMAQI
8th Jul 2025503 PMAQI
8th Jul 2025504 PMAQI
8th Jul 2025445 PMAQI
8th Jul 2025446 PMAQI
8th Jul 2025507 PMAQI
8th Jul 2025468 PMAQI
8th Jul 2025459 PMAQI
8th Jul 20254410 PMAQI
8th Jul 20253911 PMAQI
9th Jul 20254312 AMAQI
9th Jul 2025401 AMAQI
9th Jul 2025412 AMAQI
9th Jul 2025423 AMAQI
9th Jul 2025444 AMAQI
9th Jul 2025455 AMAQI
29°C27/33°C
9th Jul 2025446 AMAQI
9th Jul 2025437 AMAQI
9th Jul 2025488 AMAQI
9th Jul 2025549 AMAQI
9th Jul 20255610 AMAQI
9th Jul 20255911 AMAQI
9th Jul 20254812 PMAQI
9th Jul 2025501 PMAQI
9th Jul 2025512 PMAQI
9th Jul 2025503 PMAQI
9th Jul 2025524 PMAQI
9th Jul 2025515 PMAQI
9th Jul 2025496 PMAQI
9th Jul 2025427 PMAQI
9th Jul 2025448 PMAQI
9th Jul 2025479 PMAQI
9th Jul 20255010 PMAQI
9th Jul 20254811 PMAQI
10th Jul 20254612 AMAQI
10th Jul 2025441 AMAQI
10th Jul 2025442 AMAQI
10th Jul 2025463 AMAQI
10th Jul 2025484 AMAQI
10th Jul 2025465 AMAQI
29°C26/32°C
10th Jul 2025476 AMAQI
10th Jul 2025477 AMAQI
10th Jul 2025508 AMAQI
10th Jul 2025509 AMAQI
10th Jul 20255210 AMAQI
10th Jul 20255211 AMAQI
10th Jul 20255412 PMAQI
10th Jul 2025571 PMAQI
10th Jul 2025562 PMAQI
10th Jul 2025543 PMAQI
10th Jul 2025494 PMAQI
10th Jul 2025515 PMAQI
10th Jul 2025436 PMAQI
10th Jul 2025407 PMAQI
10th Jul 2025428 PMAQI
10th Jul 2025459 PMAQI
10th Jul 20254610 PMAQI
10th Jul 20255011 PMAQI
11th Jul 20255012 AMAQI
11th Jul 2025481 AMAQI
11th Jul 2025472 AMAQI
11th Jul 2025453 AMAQI
11th Jul 2025484 AMAQI
11th Jul 2025485 AMAQI
29°C27/32°C
11th Jul 2025506 AMAQI
11th Jul 2025507 AMAQI
11th Jul 2025398 AMAQI
11th Jul 2025439 AMAQI
11th Jul 20255210 AMAQI
11th Jul 20255311 AMAQI
11th Jul 20254912 PMAQI
11th Jul 2025521 PMAQI
11th Jul 2025502 PMAQI
11th Jul 2025463 PMAQI
11th Jul 2025434 PMAQI
11th Jul 2025545 PMAQI
11th Jul 2025536 PMAQI
11th Jul 2025527 PMAQI
11th Jul 2025528 PMAQI
11th Jul 2025529 PMAQI
11th Jul 20255410 PMAQI
11th Jul 20255311 PMAQI
12th Jul 20255312 AMAQI
12th Jul 2025521 AMAQI
12th Jul 2025512 AMAQI
12th Jul 2025503 AMAQI
12th Jul 2025514 AMAQI
12th Jul 2025505 AMAQI
28°C27/30°C
12th Jul 2025506 AMAQI
12th Jul 2025497 AMAQI
12th Jul 2025538 AMAQI
12th Jul 2025539 AMAQI
12th Jul 20253910 AMAQI
12th Jul 20253311 AMAQI
12th Jul 20253712 PMAQI
12th Jul 2025411 PMAQI
12th Jul 2025412 PMAQI
12th Jul 2025423 PMAQI
12th Jul 2025424 PMAQI
12th Jul 2025485 PMAQI
12th Jul 2025446 PMAQI
12th Jul 2025467 PMAQI
12th Jul 2025518 PMAQI
12th Jul 2025529 PMAQI
12th Jul 20255410 PMAQI
12th Jul 20255211 PMAQI
13th Jul 20255312 AMAQI
13th Jul 2025531 AMAQI
13th Jul 2025522 AMAQI
13th Jul 2025513 AMAQI
13th Jul 2025514 AMAQI
13th Jul 2025525 AMAQI
29°C26/31°C
13th Jul 2025516 AMAQI
13th Jul 2025517 AMAQI
13th Jul 2025588 AMAQI
13th Jul 2025689 AMAQI
13th Jul 20256610 AMAQI
13th Jul 20255611 AMAQI
13th Jul 20255112 PMAQI
13th Jul 2025461 PMAQI
13th Jul 2025422 PMAQI
13th Jul 2025443 PMAQI
13th Jul 2025444 PMAQI
13th Jul 2025505 PMAQI
13th Jul 2025466 PMAQI
13th Jul 2025497 PMAQI
13th Jul 2025518 PMAQI
13th Jul 2025529 PMAQI
13th Jul 20255310 PMAQI
13th Jul 20255411 PMAQI
14th Jul 20255412 AMAQI
14th Jul 2025551 AMAQI
14th Jul 2025522 AMAQI
14th Jul 2025523 AMAQI
14th Jul 2025534 AMAQI
14th Jul 2025535 AMAQI
29°C27/31°C
14th Jul 2025536 AMAQI
14th Jul 2025537 AMAQI
14th Jul 2025568 AMAQI
14th Jul 2025569 AMAQI
14th Jul 20255810 AMAQI
14th Jul 20255411 AMAQI
14th Jul 20255512 PMAQI
14th Jul 2025561 PMAQI
14th Jul 2025562 PMAQI
14th Jul 2025523 PMAQI
14th Jul 2025494 PMAQI
14th Jul 2025485 PMAQI
14th Jul 2025496 PMAQI
14th Jul 2025457 PMAQI
14th Jul 2025528 PMAQI
14th Jul 2025549 PMAQI
14th Jul 20255510 PMAQI
14th Jul 20255911 PMAQI
15th Jul 20255812 AMAQI
15th Jul 2025551 AMAQI
15th Jul 2025552 AMAQI
15th Jul 2025553 AMAQI
15th Jul 2025554 AMAQI
15th Jul 2025555 AMAQI
29°C27/32°C
15th Jul 2025556 AMAQI
15th Jul 2025567 AMAQI
15th Jul 2025578 AMAQI
15th Jul 2025609 AMAQI
15th Jul 20255810 AMAQI
15th Jul 20256411 AMAQI
15th Jul 20255612 PMAQI
15th Jul 2025531 PMAQI
15th Jul 2025442 PMAQI
15th Jul 2025433 PMAQI
15th Jul 2025474 PMAQI
15th Jul 2025485 PMAQI
15th Jul 2025496 PMAQI
15th Jul 2025547 PMAQI
15th Jul 2025568 PMAQI
15th Jul 2025579 PMAQI
15th Jul 20255810 PMAQI
15th Jul 20255811 PMAQI
16th Jul 20255712 AMAQI
16th Jul 2025561 AMAQI
16th Jul 2025562 AMAQI
16th Jul 2025563 AMAQI
16th Jul 2025564 AMAQI
16th Jul 2025565 AMAQI
29°C27/32°C
16th Jul 2025556 AMAQI
16th Jul 2025567 AMAQI
16th Jul 2025548 AMAQI
16th Jul 2025569 AMAQI
16th Jul 20255610 AMAQI
16th Jul 20255611 AMAQI
16th Jul 20255712 PMAQI
16th Jul 2025561 PMAQI
16th Jul 2025512 PMAQI
16th Jul 2025463 PMAQI
16th Jul 2025484 PMAQI
16th Jul 2025485 PMAQI
16th Jul 2025526 PMAQI
16th Jul 2025537 PMAQI
16th Jul 2025548 PMAQI
16th Jul 2025579 PMAQI
16th Jul 20255810 PMAQI
16th Jul 20255811 PMAQI
17th Jul 20255812 AMAQI
17th Jul 2025561 AMAQI
17th Jul 2025552 AMAQI
17th Jul 2025563 AMAQI
17th Jul 2025564 AMAQI
17th Jul 2025565 AMAQI
29°C27/32°C
17th Jul 2025556 AMAQI
17th Jul 2025557 AMAQI
17th Jul 2025548 AMAQI
17th Jul 2025569 AMAQI
17th Jul 20255410 AMAQI
17th Jul 20255111 AMAQI
17th Jul 20254312 PMAQI
17th Jul 2025391 PMAQI
17th Jul 2025372 PMAQI
17th Jul 2025383 PMAQI
17th Jul 2025384 PMAQI
17th Jul 2025405 PMAQI
17th Jul 2025456 PMAQI
17th Jul 2025487 PMAQI
17th Jul 2025548 PMAQI
17th Jul 2025539 PMAQI
17th Jul 20255410 PMAQI
17th Jul 20255411 PMAQI
18th Jul 20255612 AMAQI
18th Jul 2025551 AMAQI
18th Jul 2025562 AMAQI
18th Jul 2025553 AMAQI
18th Jul 2025544 AMAQI
18th Jul 2025545 AMAQI
30°C27/32°C
18th Jul 2025546 AMAQI
18th Jul 2025547 AMAQI
18th Jul 2025578 AMAQI
18th Jul 2025629 AMAQI
18th Jul 20256210 AMAQI
18th Jul 20255511 AMAQI
18th Jul 20255312 PMAQI
18th Jul 2025521 PMAQI
18th Jul 2025382 PMAQI
18th Jul 2025393 PMAQI
18th Jul 2025424 PMAQI
18th Jul 2025425 PMAQI
18th Jul 2025386 PMAQI
18th Jul 2025437 PMAQI
18th Jul 2025518 PMAQI
18th Jul 2025529 PMAQI
18th Jul 20254810 PMAQI
18th Jul 20255011 PMAQI
19th Jul 20255312 AMAQI
19th Jul 2025541 AMAQI
19th Jul 2025552 AMAQI
19th Jul 2025543 AMAQI
19th Jul 2025554 AMAQI
19th Jul 2025555 AMAQI
29°C27/32°C
19th Jul 2025556 AMAQI
19th Jul 2025557 AMAQI
19th Jul 2025438 AMAQI
19th Jul 2025409 AMAQI
19th Jul 20254110 AMAQI
19th Jul 20254411 AMAQI
19th Jul 20254112 PMAQI
19th Jul 2025271 PMAQI
19th Jul 2025262 PMAQI
19th Jul 2025283 PMAQI
19th Jul 2025344 PMAQI
19th Jul 2025345 PMAQI
19th Jul 2025346 PMAQI
19th Jul 2025377 PMAQI
19th Jul 2025448 PMAQI
19th Jul 2025469 PMAQI
19th Jul 20254610 PMAQI
19th Jul 20254811 PMAQI
20th Jul 20254812 AMAQI
20th Jul 2025481 AMAQI
20th Jul 2025552 AMAQI
20th Jul 2025533 AMAQI
20th Jul 2025524 AMAQI
20th Jul 2025535 AMAQI
27°C25/29°C
20th Jul 2025526 AMAQI
20th Jul 2025527 AMAQI
20th Jul 2025428 AMAQI
20th Jul 2025339 AMAQI
20th Jul 20252310 AMAQI
20th Jul 20252411 AMAQI
20th Jul 20252612 PMAQI
20th Jul 2025241 PMAQI
20th Jul 2025242 PMAQI
20th Jul 2025273 PMAQI
20th Jul 2025224 PMAQI
20th Jul 2025285 PMAQI
20th Jul 2025316 PMAQI
20th Jul 2025367 PMAQI
20th Jul 2025468 PMAQI
20th Jul 2025459 PMAQI
20th Jul 20254610 PMAQI
20th Jul 20254611 PMAQI
21st Jul 20255212 AMAQI
21st Jul 2025541 AMAQI
21st Jul 2025542 AMAQI
21st Jul 2025523 AMAQI
21st Jul 2025504 AMAQI
21st Jul 2025505 AMAQI
26°C25/27°C
21st Jul 2025506 AMAQI
21st Jul 2025487 AMAQI
21st Jul 2025288 AMAQI
21st Jul 2025239 AMAQI
21st Jul 20252010 AMAQI
21st Jul 20252111 AMAQI
21st Jul 20252312 PMAQI
21st Jul 2025241 PMAQI
21st Jul 2025262 PMAQI
21st Jul 2025233 PMAQI
21st Jul 2025214 PMAQI
21st Jul 2025205 PMAQI
21st Jul 2025206 PMAQI
21st Jul 2025297 PMAQI
21st Jul 2025428 PMAQI
21st Jul 2025429 PMAQI
21st Jul 20254410 PMAQI
21st Jul 20254411 PMAQI
22nd Jul 20254612 AMAQI
22nd Jul 2025521 AMAQI
22nd Jul 2025522 AMAQI
22nd Jul 2025503 AMAQI
22nd Jul 2025474 AMAQI
22nd Jul 2025475 AMAQI
26°C25/27°C
22nd Jul 2025466 AMAQI
22nd Jul 2025467 AMAQI
22nd Jul 2025288 AMAQI
22nd Jul 2025269 AMAQI
22nd Jul 20253010 AMAQI
22nd Jul 20253111 AMAQI
22nd Jul 20253012 PMAQI
22nd Jul 2025281 PMAQI
22nd Jul 2025282 PMAQI
22nd Jul 2025303 PMAQI
22nd Jul 2025284 PMAQI
22nd Jul 2025285 PMAQI
22nd Jul 2025306 PMAQI
22nd Jul 2025327 PMAQI
22nd Jul 2025458 PMAQI
22nd Jul 2025479 PMAQI
22nd Jul 20255210 PMAQI
22nd Jul 20255211 PMAQI
23rd Jul 20255212 AMAQI
23rd Jul 2025491 AMAQI
23rd Jul 2025512 AMAQI
23rd Jul 2025473 AMAQI
23rd Jul 2025454 AMAQI
23rd Jul 2025445 AMAQI
28°C26/30°C
23rd Jul 2025456 AMAQI
23rd Jul 2025447 AMAQI
23rd Jul 2025448 AMAQI
23rd Jul 2025489 AMAQI
23rd Jul 20255210 AMAQI
23rd Jul 20255011 AMAQI
23rd Jul 20253412 PMAQI
23rd Jul 2025331 PMAQI
23rd Jul 2025312 PMAQI
23rd Jul 2025353 PMAQI
23rd Jul 2025374 PMAQI
23rd Jul 2025375 PMAQI
23rd Jul 2025386 PMAQI
23rd Jul 2025527 PMAQI
23rd Jul 2025508 PMAQI
23rd Jul 2025509 PMAQI
23rd Jul 20255010 PMAQI
23rd Jul 20254811 PMAQI
24th Jul 20254712 AMAQI
24th Jul 2025461 AMAQI
24th Jul 2025472 AMAQI
24th Jul 2025473 AMAQI
24th Jul 2025464 AMAQI
24th Jul 2025465 AMAQI
28°C26/31°C
24th Jul 2025466 AMAQI
24th Jul 2025457 AMAQI
24th Jul 2025338 AMAQI
24th Jul 2025329 AMAQI
24th Jul 20253410 AMAQI
24th Jul 20253411 AMAQI
24th Jul 20253512 PMAQI
24th Jul 2025251 PMAQI
24th Jul 2025242 PMAQI
24th Jul 2025203 PMAQI
24th Jul 2025244 PMAQI
24th Jul 2025205 PMAQI
24th Jul 2025236 PMAQI
24th Jul 2025347 PMAQI
24th Jul 2025408 PMAQI
24th Jul 2025379 PMAQI
24th Jul 20253510 PMAQI
24th Jul 20253311 PMAQI
25th Jul 20254012 AMAQI
25th Jul 2025471 AMAQI
25th Jul 2025472 AMAQI
25th Jul 2025453 AMAQI
25th Jul 2025434 AMAQI
25th Jul 2025435 AMAQI
27°C26/29°C
25th Jul 2025446 AMAQI
25th Jul 2025437 AMAQI
25th Jul 2025438 AMAQI
25th Jul 2025589 AMAQI
25th Jul 20255410 AMAQI
25th Jul 20253211 AMAQI
25th Jul 20252912 PMAQI
25th Jul 2025251 PMAQI
25th Jul 2025222 PMAQI
25th Jul 2025213 PMAQI
25th Jul 2025204 PMAQI
25th Jul 2025265 PMAQI
25th Jul 2025356 PMAQI
25th Jul 2025367 PMAQI
25th Jul 2025408 PMAQI
25th Jul 2025389 PMAQI
25th Jul 20254210 PMAQI
25th Jul 20255211 PMAQI
26th Jul 20255112 AMAQI
26th Jul 2025461 AMAQI
26th Jul 2025462 AMAQI
26th Jul 2025453 AMAQI
26th Jul 2025444 AMAQI
26th Jul 2025445 AMAQI
28°C26/31°C
26th Jul 2025446 AMAQI
26th Jul 2025447 AMAQI
26th Jul 2025328 AMAQI
26th Jul 2025309 AMAQI
26th Jul 20253510 AMAQI
26th Jul 20252711 AMAQI
26th Jul 20252612 PMAQI
26th Jul 2025261 PMAQI
26th Jul 2025252 PMAQI
26th Jul 2025263 PMAQI
26th Jul 2025264 PMAQI
26th Jul 2025265 PMAQI
26th Jul 2025246 PMAQI
26th Jul 2025387 PMAQI
26th Jul 2025448 PMAQI
26th Jul 2025489 PMAQI
26th Jul 20255110 PMAQI
26th Jul 20254811 PMAQI
27th Jul 20254712 AMAQI
27th Jul 2025471 AMAQI
27th Jul 2025462 AMAQI
27th Jul 2025463 AMAQI
27th Jul 2025424 AMAQI
27th Jul 2025425 AMAQI
29°C27/31°C
27th Jul 2025436 AMAQI
27th Jul 2025437 AMAQI
27th Jul 2025428 AMAQI
27th Jul 2025409 AMAQI
27th Jul 20254610 AMAQI
27th Jul 20254811 AMAQI
27th Jul 20254612 PMAQI
27th Jul 2025381 PMAQI
27th Jul 2025402 PMAQI
27th Jul 2025373 PMAQI
27th Jul 2025404 PMAQI
27th Jul 2025415 PMAQI
27th Jul 2025436 PMAQI
27th Jul 2025467 PMAQI
27th Jul 2025428 PMAQI
27th Jul 2025469 PMAQI
27th Jul 20255410 PMAQI
27th Jul 20255611 PMAQI
28th Jul 20255112 AMAQI
28th Jul 2025481 AMAQI
28th Jul 2025472 AMAQI
28th Jul 2025463 AMAQI
28th Jul 2025454 AMAQI
28th Jul 2025465 AMAQI
29°C27/31°C
28th Jul 2025466 AMAQI
28th Jul 2025457 AMAQI
28th Jul 2025368 AMAQI
28th Jul 2025339 AMAQI
28th Jul 20252510 AMAQI
28th Jul 20252211 AMAQI
28th Jul 20253012 PMAQI
28th Jul 2025251 PMAQI
28th Jul 2025242 PMAQI
28th Jul 2025223 PMAQI
28th Jul 2025224 PMAQI
28th Jul 2025235 PMAQI
28th Jul 2025246 PMAQI
28th Jul 2025297 PMAQI
28th Jul 2025378 PMAQI
28th Jul 2025379 PMAQI
28th Jul 20254110 PMAQI
28th Jul 20254211 PMAQI
29th Jul 20254812 AMAQI
29th Jul 2025481 AMAQI
29th Jul 2025472 AMAQI
29th Jul 2025453 AMAQI
29th Jul 2025424 AMAQI
29th Jul 2025435 AMAQI
29°C27/31°C
29th Jul 2025426 AMAQI
29th Jul 2025427 AMAQI
29th Jul 2025368 AMAQI
29th Jul 2025369 AMAQI
29th Jul 20253410 AMAQI
29th Jul 20253411 AMAQI
29th Jul 20252612 PMAQI
29th Jul 2025291 PMAQI
29th Jul 2025292 PMAQI
29th Jul 2025303 PMAQI
29th Jul 2025324 PMAQI
29th Jul 2025345 PMAQI
29th Jul 2025366 PMAQI
29th Jul 2025367 PMAQI
29th Jul 2025388 PMAQI
29th Jul 2025369 PMAQI
29th Jul 20253810 PMAQI
29th Jul 20253811 PMAQI
30th Jul 20254012 AMAQI
30th Jul 2025381 AMAQI
30th Jul 2025462 AMAQI
30th Jul 2025443 AMAQI
30th Jul 2025434 AMAQI
30th Jul 2025425 AMAQI
29°C27/32°C
30th Jul 2025426 AMAQI
30th Jul 2025437 AMAQI
30th Jul 2025348 AMAQI
30th Jul 2025369 AMAQI
30th Jul 20253810 AMAQI
30th Jul 20253611 AMAQI
30th Jul 20254012 PMAQI
30th Jul 2025381 PMAQI
30th Jul 2025362 PMAQI
30th Jul 2025363 PMAQI
30th Jul 2025314 PMAQI
30th Jul 2025345 PMAQI
30th Jul 2025366 PMAQI
30th Jul 2025367 PMAQI
30th Jul 2025398 PMAQI
30th Jul 2025429 PMAQI
30th Jul 20254410 PMAQI
30th Jul 20253911 PMAQI
31st Jul 20254212 AMAQI
31st Jul 2025441 AMAQI
31st Jul 2025442 AMAQI
31st Jul 2025433 AMAQI
31st Jul 2025434 AMAQI
31st Jul 2025435 AMAQI
29°C27/33°C
31st Jul 2025436 AMAQI
31st Jul 2025437 AMAQI
31st Jul 2025438 AMAQI
31st Jul 2025439 AMAQI
31st Jul 20254810 AMAQI
31st Jul 20254111 AMAQI
31st Jul 20254212 PMAQI
31st Jul 2025441 PMAQI
31st Jul 2025442 PMAQI
31st Jul 2025473 PMAQI
31st Jul 2025484 PMAQI
31st Jul 2025475 PMAQI
31st Jul 2025366 PMAQI
31st Jul 2025527 PMAQI
31st Jul 2025608 PMAQI
31st Jul 2025579 PMAQI
31st Jul 20256410 PMAQI
31st Jul 20255811 PMAQI
1st Aug 20256012 AMAQI
1st Aug 2025561 AMAQI
1st Aug 2025542 AMAQI
1st Aug 2025503 AMAQI
1st Aug 2025514 AMAQI
1st Aug 2025525 AMAQI
30°C27/33°C
1st Aug 2025546 AMAQI
1st Aug 2025567 AMAQI
1st Aug 2025628 AMAQI
1st Aug 2025739 AMAQI
1st Aug 20255910 AMAQI
1st Aug 20256511 AMAQI
1st Aug 20255312 PMAQI
1st Aug 2025651 PMAQI
1st Aug 2025622 PMAQI
1st Aug 2025603 PMAQI
1st Aug 2025504 PMAQI
1st Aug 2025545 PMAQI
1st Aug 2025556 PMAQI
1st Aug 2025567 PMAQI
1st Aug 2025528 PMAQI
1st Aug 2025529 PMAQI
1st Aug 20255010 PMAQI
1st Aug 20255211 PMAQI
2nd Aug 20255612 AMAQI
2nd Aug 2025581 AMAQI
2nd Aug 2025582 AMAQI
2nd Aug 2025573 AMAQI
2nd Aug 2025594 AMAQI
2nd Aug 2025585 AMAQI
29°C27/31°C
2nd Aug 2025586 AMAQI
2nd Aug 2025607 AMAQI
2nd Aug 2025568 AMAQI
2nd Aug 2025499 AMAQI
2nd Aug 20255410 AMAQI
2nd Aug 20255611 AMAQI
2nd Aug 20255412 PMAQI
2nd Aug 2025541 PMAQI
2nd Aug 2025542 PMAQI
2nd Aug 2025493 PMAQI
2nd Aug 2025544 PMAQI
2nd Aug 2025535 PMAQI
2nd Aug 2025506 PMAQI
2nd Aug 2025587 PMAQI
2nd Aug 2025588 PMAQI
2nd Aug 2025589 PMAQI
2nd Aug 20255910 PMAQI
2nd Aug 20255611 PMAQI
3rd Aug 20255712 AMAQI
3rd Aug 2025561 AMAQI
3rd Aug 2025572 AMAQI
3rd Aug 2025563 AMAQI
3rd Aug 2025564 AMAQI
3rd Aug 2025575 AMAQI
29°C27/32°C
3rd Aug 2025566 AMAQI
3rd Aug 2025557 AMAQI
3rd Aug 2025548 AMAQI
3rd Aug 2025609 AMAQI
3rd Aug 20256410 AMAQI
3rd Aug 20256811 AMAQI
3rd Aug 20256312 PMAQI
3rd Aug 2025581 PMAQI
3rd Aug 2025562 PMAQI
3rd Aug 2025573 PMAQI
3rd Aug 2025574 PMAQI
3rd Aug 2025555 PMAQI
3rd Aug 2025596 PMAQI
3rd Aug 2025567 PMAQI
3rd Aug 2025618 PMAQI
3rd Aug 2025609 PMAQI
3rd Aug 20256210 PMAQI
3rd Aug 20256011 PMAQI
4th Aug 20255712 AMAQI
4th Aug 2025561 AMAQI
4th Aug 2025562 AMAQI
4th Aug 2025563 AMAQI
4th Aug 2025574 AMAQI
4th Aug 2025575 AMAQI
30°C27/33°C
4th Aug 2025576 AMAQI
6 AM4th Aug 2025577 AMAQI
4th Aug 2025648 AMAQI
4th Aug 2025609 AMAQI
4th Aug 20255910 AMAQI
4th Aug 20255611 AMAQI
12 PM
7 PM
12 AM
5 AM
--°C/°C
Day time
Avg. Highest Time
6 AM - 7 PM
43AQI
14 hours / Day
420 hours / Month
Avg. Lowest Time
6 AM - 6 PM
43AQI
13 hours / Day
390 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 6 AM to 7 PM (Avg. 43), while the lowest AQI was between 6 AM to 6 PM (Avg. 43).
Night time
Avg. Highest Time
12 AM - 11 PM
49AQI
10 hours / Day
300 hours / Month
Avg. Lowest Time
12 AM - 11 PM
49AQI
10 hours / Day
300 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 12 AM to 11 PM (Avg. 49), while the lowest AQI was between 12 AM to 11 PM (Avg. 49).
2025 Days Vs Air Quality
Hainan University, Haikou, Hainan, China
2025
32%
69
62%
134
6%
12
Total number of days with different AQI categories in last 216 days in 2025 (149 days remaining)
Good
69 DaysModerate
134 DaysPoor
12 DaysUnhealthy
0 DaysSevere
0 DaysHazardous
0 DaysUnder WHO’s Safe Air Quality Limits: 32%
Health Risk Level:
High
In 2025, 32% of 216 days were within WHO’s safe air quality limits. The risk of health issues is High, with respiratory problems, heart disease, skin issues, and stress being more common, particularly among children and the elderly.
Annual Air Quality Insights
Hainan University, Haikou, Hainan, China
AQI levels in 2025
AQI
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.
1st January 2025
113AQI
113AQI
2nd January 2025
111AQI
111AQI
3rd January 2025
107AQI
107AQI
4th January 2025
94AQI
94AQI
5th January 2025
115AQI
115AQI
6th January 2025
125AQI
125AQI
7th January 2025
93AQI
93AQI
8th January 2025
93AQI
93AQI
9th January 2025
121AQI
121AQI
10th January 2025
106AQI
106AQI
11th January 2025
90AQI
90AQI
12th January 2025
77AQI
77AQI
13th January 2025
77AQI
77AQI
14th January 2025
74AQI
74AQI
15th January 2025
77AQI
77AQI
16th January 2025
88AQI
88AQI
17th January 2025
87AQI
87AQI
18th January 2025
85AQI
85AQI
19th January 2025
89AQI
89AQI
20th January 2025
95AQI
95AQI
21st January 2025
77AQI
77AQI
22nd January 2025
91AQI
91AQI
23rd January 2025
84AQI
84AQI
24th January 2025
68AQI
68AQI
25th January 2025
60AQI
60AQI
26th January 2025
58AQI
58AQI
27th January 2025
58AQI
58AQI
28th January 2025
60AQI
60AQI
29th January 2025
72AQI
72AQI
30th January 2025
67AQI
67AQI
31st January 2025
72AQI
72AQI
1st February 2025
58AQI
58AQI
2nd February 2025
52AQI
52AQI
3rd February 2025
69AQI
69AQI
4th February 2025
54AQI
54AQI
5th February 2025
60AQI
60AQI
6th February 2025
63AQI
63AQI
7th February 2025
73AQI
73AQI
8th February 2025
59AQI
59AQI
9th February 2025
69AQI
69AQI
10th February 2025
64AQI
64AQI
11th February 2025
64AQI
64AQI
12th February 2025
58AQI
58AQI
13th February 2025
70AQI
70AQI
14th February 2025
55AQI
55AQI
15th February 2025
72AQI
72AQI
16th February 2025
51AQI
51AQI
17th February 2025
77AQI
77AQI
18th February 2025
79AQI
79AQI
19th February 2025
74AQI
74AQI
20th February 2025
71AQI
71AQI
21st February 2025
65AQI
65AQI
22nd February 2025
57AQI
57AQI
23rd February 2025
76AQI
76AQI
24th February 2025
55AQI
55AQI
25th February 2025
71AQI
71AQI
26th February 2025
87AQI
87AQI
27th February 2025
73AQI
73AQI
28th February 2025
67AQI
67AQI
1st March 2025
62AQI
62AQI
2nd March 2025
58AQI
58AQI
3rd March 2025
64AQI
64AQI
4th March 2025
58AQI
58AQI
5th March 2025
54AQI
54AQI
6th March 2025
37AQI
37AQI
7th March 2025
46AQI
46AQI
8th March 2025
56AQI
56AQI
9th March 2025
65AQI
65AQI
10th March 2025
71AQI
71AQI
11th March 2025
70AQI
70AQI
12th March 2025
67AQI
67AQI
13th March 2025
62AQI
62AQI
14th March 2025
52AQI
52AQI
15th March 2025
60AQI
60AQI
16th March 2025
47AQI
47AQI
17th March 2025
69AQI
69AQI
18th March 2025
68AQI
68AQI
19th March 2025
85AQI
85AQI
20th March 2025
81AQI
81AQI
21st March 2025
83AQI
83AQI
22nd March 2025
78AQI
78AQI
23rd March 2025
72AQI
72AQI
24th March 2025
72AQI
72AQI
25th March 2025
75AQI
75AQI
26th March 2025
73AQI
73AQI
27th March 2025
70AQI
70AQI
28th March 2025
69AQI
69AQI
29th March 2025
52AQI
52AQI
30th March 2025
42AQI
42AQI
31st March 2025
55AQI
55AQI
1st April 2025
60AQI
60AQI
2nd April 2025
71AQI
71AQI
3rd April 2025
58AQI
58AQI
4th April 2025
62AQI
62AQI
5th April 2025
67AQI
67AQI
6th April 2025
75AQI
75AQI
7th April 2025
77AQI
77AQI
8th April 2025
69AQI
69AQI
9th April 2025
66AQI
66AQI
10th April 2025
73AQI
73AQI
11th April 2025
64AQI
64AQI
12th April 2025
70AQI
70AQI
13th April 2025
129AQI
129AQI
14th April 2025
134AQI
134AQI
15th April 2025
148AQI
148AQI
16th April 2025
138AQI
138AQI
17th April 2025
114AQI
114AQI
18th April 2025
95AQI
95AQI
19th April 2025
84AQI
84AQI
20th April 2025
65AQI
65AQI
21st April 2025
65AQI
65AQI
22nd April 2025
65AQI
65AQI
23rd April 2025
61AQI
61AQI
24th April 2025
65AQI
65AQI
25th April 2025
61AQI
61AQI
26th April 2025
52AQI
52AQI
27th April 2025
46AQI
46AQI
28th April 2025
59AQI
59AQI
29th April 2025
64AQI
64AQI
30th April 2025
63AQI
63AQI
1st May 2025
54AQI
54AQI
2nd May 2025
60AQI
60AQI
3rd May 2025
58AQI
58AQI
4th May 2025
58AQI
58AQI
5th May 2025
56AQI
56AQI
6th May 2025
59AQI
59AQI
7th May 2025
59AQI
59AQI
8th May 2025
52AQI
52AQI
9th May 2025
56AQI
56AQI
10th May 2025
50AQI
50AQI
11th May 2025
59AQI
59AQI
12th May 2025
63AQI
63AQI
13th May 2025
58AQI
58AQI
14th May 2025
48AQI
48AQI
15th May 2025
45AQI
45AQI
16th May 2025
46AQI
46AQI
17th May 2025
44AQI
44AQI
18th May 2025
50AQI
50AQI
19th May 2025
46AQI
46AQI
20th May 2025
52AQI
52AQI
21st May 2025
47AQI
47AQI
22nd May 2025
46AQI
46AQI
23rd May 2025
39AQI
39AQI
24th May 2025
41AQI
41AQI
25th May 2025
60AQI
60AQI
26th May 2025
71AQI
71AQI
27th May 2025
61AQI
61AQI
28th May 2025
55AQI
55AQI
29th May 2025
50AQI
50AQI
30th May 2025
47AQI
47AQI
31st May 2025
46AQI
46AQI
1st June 2025
49AQI
49AQI
2nd June 2025
49AQI
49AQI
3rd June 2025
58AQI
58AQI
4th June 2025
54AQI
54AQI
5th June 2025
45AQI
45AQI
6th June 2025
43AQI
43AQI
7th June 2025
48AQI
48AQI
8th June 2025
52AQI
52AQI
9th June 2025
50AQI
50AQI
10th June 2025
50AQI
50AQI
11th June 2025
51AQI
51AQI
12th June 2025
39AQI
39AQI
13th June 2025
38AQI
38AQI
14th June 2025
41AQI
41AQI
15th June 2025
45AQI
45AQI
16th June 2025
50AQI
50AQI
17th June 2025
51AQI
51AQI
18th June 2025
47AQI
47AQI
19th June 2025
45AQI
45AQI
20th June 2025
44AQI
44AQI
21st June 2025
41AQI
41AQI
22nd June 2025
37AQI
37AQI
23rd June 2025
35AQI
35AQI
24th June 2025
34AQI
34AQI
25th June 2025
31AQI
31AQI
26th June 2025
29AQI
29AQI
27th June 2025
30AQI
30AQI
28th June 2025
34AQI
34AQI
29th June 2025
34AQI
34AQI
30th June 2025
35AQI
35AQI
1st July 2025
33AQI
33AQI
2nd July 2025
30AQI
30AQI
3rd July 2025
33AQI
33AQI
4th July 2025
32AQI
32AQI
5th July 2025
39AQI
39AQI
6th July 2025
37AQI
37AQI
7th July 2025
37AQI
37AQI
8th July 2025
45AQI
45AQI
9th July 2025
47AQI
47AQI
10th July 2025
48AQI
48AQI
11th July 2025
50AQI
50AQI
12th July 2025
48AQI
48AQI
13th July 2025
52AQI
52AQI
14th July 2025
53AQI
53AQI
15th July 2025
55AQI
55AQI
16th July 2025
55AQI
55AQI
17th July 2025
51AQI
51AQI
18th July 2025
51AQI
51AQI
19th July 2025
45AQI
45AQI
20th July 2025
40AQI
40AQI
21st July 2025
37AQI
37AQI
22nd July 2025
40AQI
40AQI
23rd July 2025
45AQI
45AQI
24th July 2025
36AQI
36AQI
25th July 2025
39AQI
39AQI
26th July 2025
38AQI
38AQI
27th July 2025
45AQI
45AQI
28th July 2025
36AQI
36AQI
29th July 2025
38AQI
38AQI
30th July 2025
39AQI
39AQI
31st July 2025
47AQI
47AQI
1st August 2025
56AQI
56AQI
2nd August 2025
56AQI
56AQI
3rd August 2025
56AQI
56AQI
87AQI
66AQI
64AQI
77AQI
53AQI
43AQI
43AQI
56AQI
No. of days
Jan.Feb.Mar.Apr.MayJun.Jul.Aug.Sep.Oct.Nov.Dec.Total Days
202562AQI
24
7
28
4
27
1
24
5
14
17
25
5
25
6
3
69
134
12
Highest AQI recorded in
January87AQI
Lowest AQI recorded in
July43AQI
202456AQI
7
23
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
193
13
Highest AQI recorded in
December85AQI
Lowest AQI recorded in
July28AQI
202357AQI
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 recorded in
January83AQI
Lowest AQI recorded in
July35AQI
202254AQI
10
19
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
161
8
1
Highest AQI recorded in
December75AQI
Lowest AQI recorded in
July31AQI
202152AQI
3
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
199
148
16
2
Highest AQI recorded in
January93AQI
Lowest AQI recorded in
September31AQI
202053AQI
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 recorded in
December89AQI
Lowest AQI recorded in
September33AQI
Most & Least Polluted Years Over the Last 6 Years
Most Polluted Year Recorded
2025(Avg.)
62AQILeast Polluted Year Recorded
2021(Avg.)
52AQIHainan University's annual 2025 AQI (62) shows an average percentage change of 13.3% (worsened AQI) compared to previous years: 2020 (53), 2021 (52), 2022 (54), 2023 (57), 2024 (56).
