Country Background
HistoryAQIPM2.5PM10COSO2NO2O3

Land Environment And Resources Bureau, Basuo, 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

Land Environment And Resources Bureau, Basuo, Hainan, China

2021
2024
2025
AQI
.
Days

AQI Trends: Highest and Lowest

Highest AQI recorded on
6th Aug 2021
61AQI
Lowest AQI recorded on
27th Aug 2021
22AQI

Same Day Analysis (18th August ):
On this day, AQI across the 3 years varied significantly: 2025 ranks 2nd highest AQI at 36 of Good air quality, showing improvement over 2021 on the same day.

Download 2024 Annual Data

World Air Quality Report

Globe

Day & Night AQI Trend: 18th Aug - 19th Aug 2025

Land Environment And Resources Bureau, Basuo, Hainan, China

AQI
Day
Night
.

6 AM18th Aug 2025

7 PM

5 AM19th Aug 2025

Day time
Avg. Highest Time
6AM18th Aug

38AQI

Avg. Lowest Time
6PM18th Aug

20AQI

Night time
Avg. Highest Time
1AM19th Aug

43AQI

Avg. Lowest Time
9PM18th Aug

30AQI

In the last 24 hours,

Land Environment And Resources Bureau's AQI reached its highest point of 43 at 1 AM during the Night, while the lowest point, 20, was recorded at 6 PM during the Day between 18th Aug and 19th Aug 2025.

Day & Night AQI Trend : Jul - Aug 2025

Land Environment And Resources Bureau, Basuo, Hainan, China

JulAug
20th - 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 - 18th18th - 19th19th
Day
Night
20th Jul 2025486 AMAQI
20th Jul 2025477 AMAQI
20th Jul 2025348 AMAQI
20th Jul 2025209 AMAQI
20th Jul 20252210 AMAQI
20th Jul 20252311 AMAQI
20th Jul 20252812 PMAQI
20th Jul 2025261 PMAQI
20th Jul 2025272 PMAQI
20th Jul 2025303 PMAQI
20th Jul 2025244 PMAQI
20th Jul 2025255 PMAQI
20th Jul 2025246 PMAQI
20th Jul 2025347 PMAQI
20th Jul 2025418 PMAQI
20th Jul 2025429 PMAQI
20th Jul 20254410 PMAQI
20th Jul 20254611 PMAQI
21st Jul 20254212 AMAQI
21st Jul 2025401 AMAQI
21st Jul 2025452 AMAQI
21st Jul 2025443 AMAQI
21st Jul 2025404 AMAQI
21st Jul 2025415 AMAQI

25°C24/25°C

21st Jul 2025426 AMAQI
21st Jul 2025407 AMAQI
21st Jul 2025278 AMAQI
21st Jul 2025229 AMAQI
21st Jul 20252210 AMAQI
21st Jul 20252211 AMAQI
21st Jul 20252412 PMAQI
21st Jul 2025231 PMAQI
21st Jul 2025202 PMAQI
21st Jul 2025203 PMAQI
21st Jul 2025204 PMAQI
21st Jul 2025225 PMAQI
21st Jul 2025206 PMAQI
21st Jul 2025317 PMAQI
21st Jul 2025408 PMAQI
21st Jul 2025389 PMAQI
21st Jul 20253810 PMAQI
21st Jul 20253911 PMAQI
22nd Jul 20253612 AMAQI
22nd Jul 2025391 AMAQI
22nd Jul 2025452 AMAQI
22nd Jul 2025453 AMAQI
22nd Jul 2025434 AMAQI
22nd Jul 2025415 AMAQI

25°C24/25°C

22nd Jul 2025406 AMAQI
22nd Jul 2025407 AMAQI
22nd Jul 2025258 AMAQI
22nd Jul 2025219 AMAQI
22nd Jul 20252510 AMAQI
22nd Jul 20252311 AMAQI
22nd Jul 20252312 PMAQI
22nd Jul 2025231 PMAQI
22nd Jul 2025222 PMAQI
22nd Jul 2025223 PMAQI
22nd Jul 2025214 PMAQI
22nd Jul 2025215 PMAQI
22nd Jul 2025196 PMAQI
22nd Jul 2025257 PMAQI
22nd Jul 2025318 PMAQI
22nd Jul 2025339 PMAQI
22nd Jul 20253110 PMAQI
22nd Jul 20253011 PMAQI
23rd Jul 20253112 AMAQI
23rd Jul 2025371 AMAQI
23rd Jul 2025422 AMAQI
23rd Jul 2025403 AMAQI
23rd Jul 2025384 AMAQI
23rd Jul 2025385 AMAQI

26°C24/29°C

23rd Jul 2025396 AMAQI
23rd Jul 2025387 AMAQI
23rd Jul 2025238 AMAQI
23rd Jul 2025229 AMAQI
23rd Jul 20252510 AMAQI
23rd Jul 20252511 AMAQI
23rd Jul 20252512 PMAQI
23rd Jul 2025241 PMAQI
23rd Jul 2025222 PMAQI
23rd Jul 2025193 PMAQI
23rd Jul 2025174 PMAQI
23rd Jul 2025205 PMAQI
23rd Jul 2025216 PMAQI
23rd Jul 2025267 PMAQI
23rd Jul 2025348 PMAQI
23rd Jul 2025369 PMAQI
23rd Jul 20253210 PMAQI
23rd Jul 20253111 PMAQI
24th Jul 20253012 AMAQI
24th Jul 2025281 AMAQI
24th Jul 2025332 AMAQI
24th Jul 2025323 AMAQI
24th Jul 2025404 AMAQI
24th Jul 2025425 AMAQI

27°C24/30°C

24th Jul 2025426 AMAQI
24th Jul 2025417 AMAQI
24th Jul 2025518 AMAQI
24th Jul 2025429 AMAQI
24th Jul 20252610 AMAQI
24th Jul 20252211 AMAQI
24th Jul 20252012 PMAQI
24th Jul 2025201 PMAQI
24th Jul 2025232 PMAQI
24th Jul 2025313 PMAQI
24th Jul 2025254 PMAQI
24th Jul 2025225 PMAQI
24th Jul 2025206 PMAQI
24th Jul 2025247 PMAQI
24th Jul 2025308 PMAQI
24th Jul 2025319 PMAQI
24th Jul 20253110 PMAQI
24th Jul 20253211 PMAQI
25th Jul 20253212 AMAQI
25th Jul 2025301 AMAQI
25th Jul 2025322 AMAQI
25th Jul 2025343 AMAQI
25th Jul 2025344 AMAQI
25th Jul 2025345 AMAQI

26°C24/30°C

25th Jul 2025356 AMAQI
25th Jul 2025347 AMAQI
25th Jul 2025248 AMAQI
25th Jul 2025249 AMAQI
25th Jul 20252410 AMAQI
25th Jul 20252711 AMAQI
25th Jul 20252612 PMAQI
25th Jul 2025241 PMAQI
25th Jul 2025262 PMAQI
25th Jul 2025233 PMAQI
25th Jul 2025244 PMAQI
25th Jul 2025335 PMAQI
25th Jul 2025386 PMAQI
25th Jul 2025417 PMAQI
25th Jul 2025378 PMAQI
25th Jul 2025389 PMAQI
25th Jul 20254010 PMAQI
25th Jul 20253811 PMAQI
26th Jul 20254412 AMAQI
26th Jul 2025371 AMAQI
26th Jul 2025362 AMAQI
26th Jul 2025403 AMAQI
26th Jul 2025404 AMAQI
26th Jul 2025415 AMAQI

26°C24/30°C

26th Jul 2025396 AMAQI
26th Jul 2025407 AMAQI
26th Jul 2025268 AMAQI
26th Jul 2025249 AMAQI
26th Jul 20252210 AMAQI
26th Jul 20252111 AMAQI
26th Jul 20252212 PMAQI
26th Jul 2025241 PMAQI
26th Jul 2025252 PMAQI
26th Jul 2025263 PMAQI
26th Jul 2025284 PMAQI
26th Jul 2025245 PMAQI
26th Jul 2025286 PMAQI
26th Jul 2025307 PMAQI
26th Jul 2025318 PMAQI
26th Jul 2025329 PMAQI
26th Jul 20253210 PMAQI
26th Jul 20253211 PMAQI
27th Jul 20253012 AMAQI
27th Jul 2025341 AMAQI
27th Jul 2025402 AMAQI
27th Jul 2025403 AMAQI
27th Jul 2025374 AMAQI
27th Jul 2025385 AMAQI

27°C24/31°C

27th Jul 2025366 AMAQI
27th Jul 2025367 AMAQI
27th Jul 2025328 AMAQI
27th Jul 2025309 AMAQI
27th Jul 20253210 AMAQI
27th Jul 20252811 AMAQI
27th Jul 20252512 PMAQI
27th Jul 2025251 PMAQI
27th Jul 2025272 PMAQI
27th Jul 2025263 PMAQI
27th Jul 2025284 PMAQI
27th Jul 2025285 PMAQI
27th Jul 2025286 PMAQI
27th Jul 2025277 PMAQI
27th Jul 2025278 PMAQI
27th Jul 2025319 PMAQI
27th Jul 20253210 PMAQI
27th Jul 20253311 PMAQI
28th Jul 20253012 AMAQI
28th Jul 2025321 AMAQI
28th Jul 2025382 AMAQI
28th Jul 2025383 AMAQI
28th Jul 2025384 AMAQI
28th Jul 2025395 AMAQI

27°C24/31°C

28th Jul 2025386 AMAQI
28th Jul 2025377 AMAQI
28th Jul 2025268 AMAQI
28th Jul 2025239 AMAQI
28th Jul 20252010 AMAQI
28th Jul 20252311 AMAQI
28th Jul 20252112 PMAQI
28th Jul 2025211 PMAQI
28th Jul 2025172 PMAQI
28th Jul 2025223 PMAQI
28th Jul 2025244 PMAQI
28th Jul 2025245 PMAQI
28th Jul 2025276 PMAQI
28th Jul 2025257 PMAQI
28th Jul 2025268 PMAQI
28th Jul 2025319 PMAQI
28th Jul 20252910 PMAQI
28th Jul 20252911 PMAQI
29th Jul 20253012 AMAQI
29th Jul 2025351 AMAQI
29th Jul 2025412 AMAQI
29th Jul 2025383 AMAQI
29th Jul 2025354 AMAQI
29th Jul 2025335 AMAQI

27°C24/30°C

29th Jul 2025336 AMAQI
29th Jul 2025327 AMAQI
29th Jul 2025248 AMAQI
29th Jul 2025289 AMAQI
29th Jul 20252110 AMAQI
29th Jul 20252511 AMAQI
29th Jul 20252412 PMAQI
29th Jul 2025241 PMAQI
29th Jul 2025222 PMAQI
29th Jul 2025223 PMAQI
29th Jul 2025224 PMAQI
29th Jul 2025235 PMAQI
29th Jul 2025246 PMAQI
29th Jul 2025297 PMAQI
29th Jul 2025308 PMAQI
29th Jul 2025309 PMAQI
29th Jul 20253010 PMAQI
29th Jul 20253011 PMAQI
30th Jul 20253012 AMAQI
30th Jul 2025301 AMAQI
30th Jul 2025302 AMAQI
30th Jul 2025323 AMAQI
30th Jul 2025324 AMAQI
30th Jul 2025365 AMAQI

28°C25/32°C

30th Jul 2025366 AMAQI
30th Jul 2025367 AMAQI
30th Jul 2025358 AMAQI
30th Jul 2025389 AMAQI
30th Jul 20253510 AMAQI
30th Jul 20253411 AMAQI
30th Jul 20253112 PMAQI
30th Jul 2025321 PMAQI
30th Jul 2025392 PMAQI
30th Jul 2025363 PMAQI
30th Jul 2025284 PMAQI
30th Jul 2025295 PMAQI
30th Jul 2025346 PMAQI
30th Jul 2025347 PMAQI
30th Jul 2025278 PMAQI
30th Jul 2025289 PMAQI
30th Jul 20252810 PMAQI
30th Jul 20252711 PMAQI
31st Jul 20254112 AMAQI
31st Jul 2025401 AMAQI
31st Jul 2025412 AMAQI
31st Jul 2025403 AMAQI
31st Jul 2025404 AMAQI
31st Jul 2025405 AMAQI

28°C26/30°C

31st Jul 2025406 AMAQI
31st Jul 2025407 AMAQI
31st Jul 2025408 AMAQI
31st Jul 2025409 AMAQI
31st Jul 20254510 AMAQI
31st Jul 20253411 AMAQI
31st Jul 20252912 PMAQI
31st Jul 2025281 PMAQI
31st Jul 2025282 PMAQI
31st Jul 2025293 PMAQI
31st Jul 2025304 PMAQI
31st Jul 2025305 PMAQI
31st Jul 2025486 PMAQI
31st Jul 2025507 PMAQI
31st Jul 2025588 PMAQI
31st Jul 2025609 PMAQI
31st Jul 20255810 PMAQI
31st Jul 20256111 PMAQI
1st Aug 20256012 AMAQI
1st Aug 2025581 AMAQI
1st Aug 2025582 AMAQI
1st Aug 2025553 AMAQI
1st Aug 2025554 AMAQI
1st Aug 2025565 AMAQI

28°C26/31°C

1st Aug 2025566 AMAQI
1st Aug 2025567 AMAQI
1st Aug 2025538 AMAQI
1st Aug 2025539 AMAQI
1st Aug 20255410 AMAQI
1st Aug 20255511 AMAQI
1st Aug 20255412 PMAQI
1st Aug 2025531 PMAQI
1st Aug 2025502 PMAQI
1st Aug 2025483 PMAQI
1st Aug 2025514 PMAQI
1st Aug 2025525 PMAQI
1st Aug 2025486 PMAQI
1st Aug 2025537 PMAQI
1st Aug 2025558 PMAQI
1st Aug 2025549 PMAQI
1st Aug 20255710 PMAQI
1st Aug 20255811 PMAQI
2nd Aug 20255912 AMAQI
2nd Aug 2025561 AMAQI
2nd Aug 2025562 AMAQI
2nd Aug 2025563 AMAQI
2nd Aug 2025554 AMAQI
2nd Aug 2025565 AMAQI

28°C26/30°C

2nd Aug 2025566 AMAQI
2nd Aug 2025567 AMAQI
2nd Aug 2025488 AMAQI
2nd Aug 2025469 AMAQI
2nd Aug 20255210 AMAQI
2nd Aug 20254911 AMAQI
2nd Aug 20255412 PMAQI
2nd Aug 2025511 PMAQI
2nd Aug 2025542 PMAQI
2nd Aug 2025543 PMAQI
2nd Aug 2025484 PMAQI
2nd Aug 2025545 PMAQI
2nd Aug 2025556 PMAQI
2nd Aug 2025567 PMAQI
2nd Aug 2025568 PMAQI
2nd Aug 2025579 PMAQI
2nd Aug 20255810 PMAQI
2nd Aug 20255811 PMAQI
3rd Aug 20255612 AMAQI
3rd Aug 2025581 AMAQI
3rd Aug 2025572 AMAQI
3rd Aug 2025563 AMAQI
3rd Aug 2025564 AMAQI
3rd Aug 2025575 AMAQI

29°C26/32°C

3rd Aug 2025566 AMAQI
3rd Aug 2025567 AMAQI
3rd Aug 2025528 AMAQI
3rd Aug 2025589 AMAQI
3rd Aug 20256410 AMAQI
3rd Aug 20256611 AMAQI
3rd Aug 20256212 PMAQI
3rd Aug 2025611 PMAQI
3rd Aug 2025542 PMAQI
3rd Aug 2025543 PMAQI
3rd Aug 2025524 PMAQI
3rd Aug 2025505 PMAQI
3rd Aug 2025496 PMAQI
3rd Aug 2025567 PMAQI
3rd Aug 2025588 PMAQI
3rd Aug 2025609 PMAQI
3rd Aug 20255910 PMAQI
3rd Aug 20255811 PMAQI
4th Aug 20255612 AMAQI
4th Aug 2025571 AMAQI
4th Aug 2025562 AMAQI
4th Aug 2025573 AMAQI
4th Aug 2025574 AMAQI
4th Aug 2025575 AMAQI

29°C27/32°C

4th Aug 2025576 AMAQI
4th Aug 2025577 AMAQI
4th Aug 2025568 AMAQI
4th Aug 2025549 AMAQI
4th Aug 20256610 AMAQI
4th Aug 20255811 AMAQI
4th Aug 20255412 PMAQI
4th Aug 2025581 PMAQI
4th Aug 2025532 PMAQI
4th Aug 2025543 PMAQI
4th Aug 2025554 PMAQI
4th Aug 2025445 PMAQI
4th Aug 2025506 PMAQI
4th Aug 2025537 PMAQI
4th Aug 2025548 PMAQI
4th Aug 2025579 PMAQI
4th Aug 20255810 PMAQI
4th Aug 20255611 PMAQI
5th Aug 20255612 AMAQI
5th Aug 2025571 AMAQI
5th Aug 2025572 AMAQI
5th Aug 2025563 AMAQI
5th Aug 2025564 AMAQI
5th Aug 2025575 AMAQI

29°C27/31°C

5th Aug 2025576 AMAQI
5th Aug 2025577 AMAQI
5th Aug 2025528 AMAQI
5th Aug 2025529 AMAQI
5th Aug 20255410 AMAQI
5th Aug 20255411 AMAQI
5th Aug 20256012 PMAQI
5th Aug 2025581 PMAQI
5th Aug 2025482 PMAQI
5th Aug 2025533 PMAQI
5th Aug 2025534 PMAQI
5th Aug 2025425 PMAQI
5th Aug 2025406 PMAQI
5th Aug 2025517 PMAQI
5th Aug 2025538 PMAQI
5th Aug 2025539 PMAQI
5th Aug 20255310 PMAQI
5th Aug 20255611 PMAQI
6th Aug 20255512 AMAQI
6th Aug 2025571 AMAQI
6th Aug 2025572 AMAQI
6th Aug 2025563 AMAQI
6th Aug 2025574 AMAQI
6th Aug 2025565 AMAQI

29°C26/33°C

6th Aug 2025566 AMAQI
6th Aug 2025567 AMAQI
6th Aug 2025388 AMAQI
6th Aug 2025479 AMAQI
6th Aug 20255310 AMAQI
6th Aug 20254611 AMAQI
6th Aug 20255412 PMAQI
6th Aug 2025561 PMAQI
6th Aug 2025382 PMAQI
6th Aug 2025433 PMAQI
6th Aug 2025434 PMAQI
6th Aug 2025435 PMAQI
6th Aug 2025416 PMAQI
6th Aug 2025517 PMAQI
6th Aug 2025528 PMAQI
6th Aug 2025529 PMAQI
6th Aug 20255210 PMAQI
6th Aug 20255211 PMAQI
7th Aug 20255412 AMAQI
7th Aug 2025561 AMAQI
7th Aug 2025562 AMAQI
7th Aug 2025553 AMAQI
7th Aug 2025554 AMAQI
7th Aug 2025555 AMAQI

29°C26/33°C

7th Aug 2025556 AMAQI
7th Aug 2025567 AMAQI
7th Aug 2025478 AMAQI
7th Aug 2025469 AMAQI
7th Aug 20254910 AMAQI
7th Aug 20255311 AMAQI
7th Aug 20255812 PMAQI
7th Aug 2025441 PMAQI
7th Aug 2025462 PMAQI
7th Aug 2025443 PMAQI
7th Aug 2025444 PMAQI
7th Aug 2025405 PMAQI
7th Aug 2025516 PMAQI
7th Aug 2025527 PMAQI
7th Aug 2025528 PMAQI
7th Aug 2025539 PMAQI
7th Aug 20255210 PMAQI
7th Aug 20255311 PMAQI
8th Aug 20255212 AMAQI
8th Aug 2025541 AMAQI
8th Aug 2025542 AMAQI
8th Aug 2025543 AMAQI
8th Aug 2025534 AMAQI
8th Aug 2025535 AMAQI

29°C26/33°C

8th Aug 2025536 AMAQI
8th Aug 2025537 AMAQI
8th Aug 2025508 AMAQI
8th Aug 2025509 AMAQI
8th Aug 20255410 AMAQI
8th Aug 20255311 AMAQI
8th Aug 20254812 PMAQI
8th Aug 2025481 PMAQI
8th Aug 2025512 PMAQI
8th Aug 2025413 PMAQI
8th Aug 2025444 PMAQI
8th Aug 2025425 PMAQI
8th Aug 2025426 PMAQI
8th Aug 2025437 PMAQI
8th Aug 2025528 PMAQI
8th Aug 2025529 PMAQI
8th Aug 20255310 PMAQI
8th Aug 20255311 PMAQI
9th Aug 20255212 AMAQI
9th Aug 2025511 AMAQI
9th Aug 2025532 AMAQI
9th Aug 2025543 AMAQI
9th Aug 2025544 AMAQI
9th Aug 2025545 AMAQI

29°C25/34°C

9th Aug 2025546 AMAQI
9th Aug 2025547 AMAQI
9th Aug 2025498 AMAQI
9th Aug 2025549 AMAQI
9th Aug 20255410 AMAQI
9th Aug 20255211 AMAQI
9th Aug 20254912 PMAQI
9th Aug 2025441 PMAQI
9th Aug 2025432 PMAQI
9th Aug 2025383 PMAQI
9th Aug 2025384 PMAQI
9th Aug 2025385 PMAQI
9th Aug 2025416 PMAQI
9th Aug 2025437 PMAQI
9th Aug 2025518 PMAQI
9th Aug 2025549 PMAQI
9th Aug 20255310 PMAQI
9th Aug 20255211 PMAQI
10th Aug 20255212 AMAQI
10th Aug 2025521 AMAQI
10th Aug 2025522 AMAQI
10th Aug 2025533 AMAQI
10th Aug 2025524 AMAQI
10th Aug 2025525 AMAQI

29°C25/34°C

10th Aug 2025526 AMAQI
10th Aug 2025527 AMAQI
10th Aug 2025458 AMAQI
10th Aug 2025409 AMAQI
10th Aug 20253810 AMAQI
10th Aug 20254311 AMAQI
10th Aug 20253812 PMAQI
10th Aug 2025421 PMAQI
10th Aug 2025402 PMAQI
10th Aug 2025463 PMAQI
10th Aug 2025444 PMAQI
10th Aug 2025385 PMAQI
10th Aug 2025396 PMAQI
10th Aug 2025527 PMAQI
10th Aug 2025568 PMAQI
10th Aug 2025569 PMAQI
10th Aug 20255310 PMAQI
10th Aug 20255111 PMAQI
11th Aug 20255212 AMAQI
11th Aug 2025501 AMAQI
11th Aug 2025492 AMAQI
11th Aug 2025523 AMAQI
11th Aug 2025544 AMAQI
11th Aug 2025545 AMAQI

29°C25/33°C

11th Aug 2025546 AMAQI
11th Aug 2025547 AMAQI
11th Aug 2025368 AMAQI
11th Aug 2025369 AMAQI
11th Aug 20253210 AMAQI
11th Aug 20252911 AMAQI
11th Aug 20252812 PMAQI
11th Aug 2025311 PMAQI
11th Aug 2025382 PMAQI
11th Aug 2025403 PMAQI
11th Aug 2025444 PMAQI
11th Aug 2025455 PMAQI
11th Aug 2025446 PMAQI
11th Aug 2025447 PMAQI
11th Aug 2025478 PMAQI
11th Aug 2025479 PMAQI
11th Aug 20254910 PMAQI
11th Aug 20254511 PMAQI
12th Aug 20254912 AMAQI
12th Aug 2025491 AMAQI
12th Aug 2025512 AMAQI
12th Aug 2025513 AMAQI
12th Aug 2025524 AMAQI
12th Aug 2025525 AMAQI

28°C25/32°C

12th Aug 2025506 AMAQI
12th Aug 2025507 AMAQI
12th Aug 2025438 AMAQI
12th Aug 2025579 AMAQI
12th Aug 20255110 AMAQI
12th Aug 20255711 AMAQI
12th Aug 20254612 PMAQI
12th Aug 2025461 PMAQI
12th Aug 2025402 PMAQI
12th Aug 2025443 PMAQI
12th Aug 2025414 PMAQI
12th Aug 2025435 PMAQI
12th Aug 2025416 PMAQI
12th Aug 2025437 PMAQI
12th Aug 2025488 PMAQI
12th Aug 2025469 PMAQI
12th Aug 20254910 PMAQI
12th Aug 20254611 PMAQI
13th Aug 20254812 AMAQI
13th Aug 2025511 AMAQI
13th Aug 2025512 AMAQI
13th Aug 2025503 AMAQI
13th Aug 2025484 AMAQI
13th Aug 2025485 AMAQI

28°C25/31°C

13th Aug 2025486 AMAQI
13th Aug 2025497 AMAQI
13th Aug 2025548 AMAQI
13th Aug 2025469 AMAQI
13th Aug 20255110 AMAQI
13th Aug 20254411 AMAQI
13th Aug 20253812 PMAQI
13th Aug 2025441 PMAQI
13th Aug 2025412 PMAQI
13th Aug 2025423 PMAQI
13th Aug 2025414 PMAQI
13th Aug 2025375 PMAQI
13th Aug 2025366 PMAQI
13th Aug 2025357 PMAQI
13th Aug 2025408 PMAQI
13th Aug 2025429 PMAQI
13th Aug 20254210 PMAQI
13th Aug 20254511 PMAQI
14th Aug 20254312 AMAQI
14th Aug 2025431 AMAQI
14th Aug 2025402 AMAQI
14th Aug 2025483 AMAQI
14th Aug 2025474 AMAQI
14th Aug 2025465 AMAQI

28°C25/32°C

14th Aug 2025466 AMAQI
14th Aug 2025487 AMAQI
14th Aug 2025298 AMAQI
14th Aug 2025389 AMAQI
14th Aug 20252810 AMAQI
14th Aug 20252711 AMAQI
14th Aug 20252312 PMAQI
14th Aug 2025251 PMAQI
14th Aug 2025322 PMAQI
14th Aug 2025303 PMAQI
14th Aug 2025374 PMAQI
14th Aug 2025315 PMAQI
14th Aug 2025386 PMAQI
14th Aug 2025447 PMAQI
14th Aug 2025408 PMAQI
14th Aug 2025449 PMAQI
14th Aug 20255010 PMAQI
14th Aug 20254611 PMAQI
15th Aug 20254012 AMAQI
15th Aug 2025511 AMAQI
15th Aug 2025462 AMAQI
15th Aug 2025483 AMAQI
15th Aug 2025434 AMAQI
15th Aug 2025415 AMAQI

28°C25/32°C

15th Aug 2025436 AMAQI
15th Aug 2025447 AMAQI
15th Aug 2025308 AMAQI
15th Aug 2025289 AMAQI
15th Aug 20252710 AMAQI
15th Aug 20252311 AMAQI
15th Aug 20252812 PMAQI
15th Aug 2025301 PMAQI
15th Aug 2025352 PMAQI
15th Aug 2025293 PMAQI
15th Aug 2025334 PMAQI
15th Aug 2025315 PMAQI
15th Aug 2025366 PMAQI
15th Aug 2025377 PMAQI
15th Aug 2025388 PMAQI
15th Aug 2025389 PMAQI
15th Aug 20254010 PMAQI
15th Aug 20254111 PMAQI
16th Aug 20253912 AMAQI
16th Aug 2025471 AMAQI
16th Aug 2025462 AMAQI
16th Aug 2025443 AMAQI
16th Aug 2025444 AMAQI
16th Aug 2025435 AMAQI

27°C24/29°C

16th Aug 2025426 AMAQI
16th Aug 2025437 AMAQI
16th Aug 2025308 AMAQI
16th Aug 2025259 AMAQI
16th Aug 20253110 AMAQI
16th Aug 20252911 AMAQI
16th Aug 20254412 PMAQI
16th Aug 2025361 PMAQI
16th Aug 2025212 PMAQI
16th Aug 2025193 PMAQI
16th Aug 2025204 PMAQI
16th Aug 2025205 PMAQI
16th Aug 2025206 PMAQI
16th Aug 2025267 PMAQI
16th Aug 2025348 PMAQI
16th Aug 2025349 PMAQI
16th Aug 20253410 PMAQI
16th Aug 20253511 PMAQI
17th Aug 20254112 AMAQI
17th Aug 2025361 AMAQI
17th Aug 2025372 AMAQI
17th Aug 2025363 AMAQI
17th Aug 2025384 AMAQI
17th Aug 2025435 AMAQI

26°C24/30°C

17th Aug 2025426 AMAQI
17th Aug 2025417 AMAQI
17th Aug 2025268 AMAQI
17th Aug 2025229 AMAQI
17th Aug 20252210 AMAQI
17th Aug 20251511 AMAQI
17th Aug 20252112 PMAQI
17th Aug 2025321 PMAQI
17th Aug 2025302 PMAQI
17th Aug 2025263 PMAQI
17th Aug 2025274 PMAQI
17th Aug 2025215 PMAQI
17th Aug 2025286 PMAQI
17th Aug 2025327 PMAQI
17th Aug 2025338 PMAQI
17th Aug 2025389 PMAQI
17th Aug 20253510 PMAQI
17th Aug 20254111 PMAQI
18th Aug 20253812 AMAQI
18th Aug 2025421 AMAQI
18th Aug 2025452 AMAQI
18th Aug 2025423 AMAQI
18th Aug 2025414 AMAQI
18th Aug 2025415 AMAQI

25°C24/28°C

18th Aug 2025386 AMAQI
18th Aug 2025377 AMAQI
18th Aug 2025268 AMAQI
18th Aug 2025289 AMAQI
18th Aug 20253510 AMAQI
18th Aug 20253311 AMAQI
18th Aug 20253412 PMAQI
18th Aug 2025301 PMAQI
18th Aug 2025282 PMAQI
18th Aug 2025283 PMAQI
18th Aug 2025204 PMAQI
18th Aug 2025225 PMAQI
18th Aug 2025206 PMAQI
18th Aug 2025257 PMAQI
18th Aug 2025348 PMAQI
18th Aug 2025309 PMAQI
18th Aug 20253410 PMAQI
18th Aug 20253611 PMAQI
19th Aug 20253812 AMAQI
19th Aug 2025431 AMAQI
19th Aug 2025402 AMAQI
19th Aug 2025403 AMAQI
19th Aug 2025404 AMAQI
19th Aug 2025385 AMAQI

25°C24/28°C

19th Aug 2025396 AMAQI
6 AM
19th Aug 2025377 AMAQI
19th Aug 2025248 AMAQI
19th Aug 2025249 AMAQI
19th Aug 20252610 AMAQI
19th Aug 20252411 AMAQI
19th Aug 20252512 PMAQI
12 PM
19th Aug 2025241 PMAQI
19th Aug 2025262 PMAQI
19th Aug 2025243 PMAQI
19th Aug 2025244 PMAQI
19th Aug 2025195 PMAQI
19th Aug 2025226 PMAQI
19th Aug 2025287 PMAQI
7 PM
19th Aug 2025368 PMAQI
19th Aug 2025349 PMAQI
19th Aug 20253310 PMAQI
12 AM
5 AM

--°C/°C

Day time
Avg. Highest Time
6 AM - 7 AM

46AQI

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

34AQI

4 hours / Day
120 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 6 AM to 7 AM (Avg. 46), while the lowest AQI was between 2 PM to 5 PM (Avg. 34).
Night time
Avg. Highest Time
12 AM - 5 AM

46AQI

6 hours / Day
180 hours / Month
Avg. Lowest Time
8 PM - 11 PM

43AQI

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. 46), while the lowest AQI was between 8 PM to 11 PM (Avg. 43).

2025 Days Vs Air Quality

Land Environment And Resources Bureau, Basuo, Hainan, China

2025

40%

92

54%

124

6%

14

Total number of days with different AQI categories in last 231 days in 2025 (134 days remaining)

Good
92 Days
Moderate
124 Days
Poor
14 Days
Unhealthy
0 Days
Severe
0 Days
Hazardous
0 Days

Under WHO’s Safe Air Quality Limits: 40%

Health Risk Level:

Significant

In 2025, 40% of 231 days were within WHO’s safe air quality limits, and 60% exceeded them. The risk of health issues is Significant, especially for those with existing respiratory or heart conditions.

Annual Air Quality Insights

Land Environment And Resources Bureau, Basuo, 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
114AQI
2nd January 2025
95AQI
3rd January 2025
105AQI
4th January 2025
95AQI
5th January 2025
118AQI
6th January 2025
113AQI
7th January 2025
99AQI
8th January 2025
98AQI
9th January 2025
113AQI
10th January 2025
105AQI
11th January 2025
97AQI
12th January 2025
98AQI
13th January 2025
86AQI
14th January 2025
84AQI
15th January 2025
93AQI
16th January 2025
97AQI
17th January 2025
106AQI
18th January 2025
91AQI
19th January 2025
110AQI
20th January 2025
118AQI
21st January 2025
109AQI
22nd January 2025
126AQI
23rd January 2025
103AQI
24th January 2025
82AQI
25th January 2025
85AQI
26th January 2025
60AQI
27th January 2025
71AQI
28th January 2025
75AQI
29th January 2025
91AQI
30th January 2025
73AQI
31st January 2025
81AQI
1st February 2025
60AQI
2nd February 2025
71AQI
3rd February 2025
57AQI
4th February 2025
55AQI
5th February 2025
55AQI
6th February 2025
67AQI
7th February 2025
63AQI
8th February 2025
60AQI
9th February 2025
70AQI
10th February 2025
63AQI
11th February 2025
67AQI
12th February 2025
62AQI
13th February 2025
70AQI
14th February 2025
59AQI
15th February 2025
85AQI
16th February 2025
57AQI
17th February 2025
80AQI
18th February 2025
68AQI
19th February 2025
81AQI
20th February 2025
65AQI
21st February 2025
65AQI
22nd February 2025
55AQI
23rd February 2025
45AQI
24th February 2025
43AQI
25th February 2025
44AQI
26th February 2025
58AQI
27th February 2025
66AQI
28th February 2025
57AQI
1st March 2025
63AQI
2nd March 2025
56AQI
3rd March 2025
73AQI
4th March 2025
65AQI
5th March 2025
76AQI
6th March 2025
44AQI
7th March 2025
52AQI
8th March 2025
37AQI
9th March 2025
61AQI
10th March 2025
58AQI
11th March 2025
61AQI
12th March 2025
49AQI
13th March 2025
50AQI
14th March 2025
45AQI
15th March 2025
62AQI
16th March 2025
56AQI
17th March 2025
71AQI
18th March 2025
72AQI
19th March 2025
84AQI
20th March 2025
84AQI
21st March 2025
88AQI
22nd March 2025
84AQI
23rd March 2025
83AQI
24th March 2025
82AQI
25th March 2025
88AQI
26th March 2025
80AQI
27th March 2025
89AQI
28th March 2025
85AQI
29th March 2025
68AQI
30th March 2025
50AQI
31st March 2025
43AQI
1st April 2025
49AQI
2nd April 2025
66AQI
3rd April 2025
65AQI
4th April 2025
63AQI
5th April 2025
70AQI
6th April 2025
52AQI
7th April 2025
63AQI
8th April 2025
57AQI
9th April 2025
72AQI
10th April 2025
75AQI
11th April 2025
82AQI
12th April 2025
72AQI
13th April 2025
124AQI
14th April 2025
119AQI
15th April 2025
100AQI
16th April 2025
89AQI
17th April 2025
90AQI
18th April 2025
80AQI
19th April 2025
66AQI
20th April 2025
71AQI
21st April 2025
67AQI
22nd April 2025
74AQI
23rd April 2025
62AQI
24th April 2025
69AQI
25th April 2025
69AQI
26th April 2025
61AQI
27th April 2025
65AQI
28th April 2025
61AQI
29th April 2025
49AQI
30th April 2025
56AQI
1st May 2025
58AQI
2nd May 2025
64AQI
3rd May 2025
66AQI
4th May 2025
70AQI
5th May 2025
59AQI
6th May 2025
67AQI
7th May 2025
72AQI
8th May 2025
66AQI
9th May 2025
62AQI
10th May 2025
59AQI
11th May 2025
66AQI
12th May 2025
66AQI
13th May 2025
66AQI
14th May 2025
59AQI
15th May 2025
45AQI
16th May 2025
42AQI
17th May 2025
47AQI
18th May 2025
47AQI
19th May 2025
49AQI
20th May 2025
49AQI
21st May 2025
50AQI
22nd May 2025
42AQI
23rd May 2025
49AQI
24th May 2025
48AQI
25th May 2025
45AQI
26th May 2025
61AQI
27th May 2025
50AQI
28th May 2025
44AQI
29th May 2025
43AQI
30th May 2025
49AQI
31st May 2025
42AQI
1st June 2025
44AQI
2nd June 2025
46AQI
3rd June 2025
51AQI
4th June 2025
59AQI
5th June 2025
60AQI
6th June 2025
60AQI
7th June 2025
58AQI
8th June 2025
58AQI
9th June 2025
63AQI
10th June 2025
62AQI
11th June 2025
49AQI
12th June 2025
39AQI
13th June 2025
48AQI
14th June 2025
43AQI
15th June 2025
43AQI
16th June 2025
46AQI
17th June 2025
47AQI
18th June 2025
38AQI
19th June 2025
37AQI
20th June 2025
36AQI
21st June 2025
39AQI
22nd June 2025
43AQI
23rd June 2025
38AQI
24th June 2025
39AQI
25th June 2025
35AQI
26th June 2025
37AQI
27th June 2025
35AQI
28th June 2025
32AQI
29th June 2025
32AQI
30th June 2025
30AQI
1st July 2025
31AQI
2nd July 2025
29AQI
3rd July 2025
27AQI
4th July 2025
27AQI
5th July 2025
29AQI
6th July 2025
29AQI
7th July 2025
28AQI
8th July 2025
33AQI
9th July 2025
38AQI
10th July 2025
40AQI
11th July 2025
44AQI
12th July 2025
38AQI
13th July 2025
42AQI
14th July 2025
45AQI
15th July 2025
47AQI
16th July 2025
43AQI
17th July 2025
42AQI
18th July 2025
42AQI
19th July 2025
39AQI
20th July 2025
37AQI
21st July 2025
33AQI
22nd July 2025
31AQI
23rd July 2025
30AQI
24th July 2025
31AQI
25th July 2025
32AQI
26th July 2025
32AQI
27th July 2025
32AQI
28th July 2025
29AQI
29th July 2025
29AQI
30th July 2025
32AQI
31st July 2025
42AQI
1st August 2025
54AQI
2nd August 2025
55AQI
3rd August 2025
57AQI
4th August 2025
55AQI
5th August 2025
53AQI
6th August 2025
51AQI
7th August 2025
51AQI
8th August 2025
50AQI
9th August 2025
49AQI
10th August 2025
48AQI
11th August 2025
45AQI
12th August 2025
48AQI
13th August 2025
44AQI
14th August 2025
39AQI
15th August 2025
38AQI
16th August 2025
34AQI
17th August 2025
33AQI
18th August 2025
36AQI

96AQI

62AQI

66AQI

72AQI

55AQI

45AQI

35AQI

47AQI

No. of days

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

202561AQI

19
12
3
25
7
24
2
26
2
16
15
22
8
31
11
7
92
124
14

Highest AQI recorded in

January

96AQI

Lowest AQI recorded in

July

35AQI

202446AQI

14
2
1
1
1
2
11
1
29
1
31
31
24
5
19
9
3
20
10
23
8
180
55
11

Highest AQI recorded in

December

88AQI

Lowest AQI recorded in

July

31AQI

202345AQI

3
26
5
29
5

Highest AQI recorded in

November

47AQI

Lowest AQI recorded in

December

45AQI

202262AQI

1
11
1
11

Highest AQI recorded in

January

62AQI

Lowest AQI recorded in

January

62AQI

202157AQI

25
4
2
3
23
2
29
2
2
28
20
11
20
10
29
2
24
7
28
2
19
12
8
20
2
5
25
1
158
194
11
2

Highest AQI recorded in

January

90AQI

Lowest AQI recorded in

September

33AQI

202052AQI

8
4
9
11
5
27
1
29
24
5
24
5
1
14
16
1
4
20
6
4
21
6
141
90
14

Highest AQI recorded in

December

80AQI

Lowest AQI recorded in

July

31AQI

Most & Least Polluted Years Over the Last 6 Years

Most Polluted Year Recorded
2022(Avg.)
62AQI
Least Polluted Year Recorded
2023(Avg.)
45AQI

Land Environment And Resources Bureau's annual 2025 AQI (61) shows an average percentage change of 17.7% (worsened AQI) compared to previous years: 2020 (52), 2021 (57), 2022 (62), 2023 (45), 2024 (46).