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+
September 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
30th Sep 2021
67AQILowest AQI recorded on
24th Sep 2021
21AQISame Day Analysis (18th September ):
On this day, AQI across the 3 years varied significantly: 2025 ranks 3rd highest AQI at 28 of Good air quality, showing improvement over 2024 and 2021 on the same day.
Download 2024 Annual Data
World Air Quality Report
Day & Night AQI Trend: 19th Sep - 20th Sep 2025
Land Environment And Resources Bureau, Basuo, Hainan, China
AQI
Day
Night
.
6 AM19th Sep 2025
6 PM
5 AM20th Sep 2025
Day time
Avg. Highest Time
12PM19th Sep
32AQI
Avg. Lowest Time
5PM19th Sep
19AQI
Night time
Avg. Highest Time
9PM19th Sep
34AQI
Avg. Lowest Time
7PM19th Sep
25AQI
In the last 24 hours,
Land Environment And Resources Bureau's AQI reached its highest point of 34 at 9 PM during the Night, while the lowest point, 19, was recorded at 5 PM during the Day between 19th Sep and 20th Sep 2025.
Day & Night AQI Trend : Aug - Sep 2025
Land Environment And Resources Bureau, Basuo, Hainan, China
AugSep
21st - 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 - 20th20th
Day
Night
21st Aug 2025366 AMAQI
21st Aug 2025357 AMAQI
21st Aug 2025278 AMAQI
21st Aug 2025389 AMAQI
21st Aug 20253210 AMAQI
21st Aug 20253911 AMAQI
21st Aug 20253912 PMAQI
21st Aug 2025351 PMAQI
21st Aug 2025302 PMAQI
21st Aug 2025333 PMAQI
21st Aug 2025404 PMAQI
21st Aug 2025355 PMAQI
21st Aug 2025296 PMAQI
21st Aug 2025307 PMAQI
21st Aug 2025358 PMAQI
21st Aug 2025379 PMAQI
21st Aug 20253610 PMAQI
21st Aug 20253511 PMAQI
22nd Aug 20253212 AMAQI
22nd Aug 2025391 AMAQI
22nd Aug 2025382 AMAQI
22nd Aug 2025373 AMAQI
22nd Aug 2025374 AMAQI
22nd Aug 2025375 AMAQI
28°C24/33°C
22nd Aug 2025376 AMAQI
22nd Aug 2025397 AMAQI
22nd Aug 2025248 AMAQI
22nd Aug 2025229 AMAQI
22nd Aug 20253010 AMAQI
22nd Aug 20253411 AMAQI
22nd Aug 20253312 PMAQI
22nd Aug 2025281 PMAQI
22nd Aug 2025282 PMAQI
22nd Aug 2025263 PMAQI
22nd Aug 2025294 PMAQI
22nd Aug 2025365 PMAQI
22nd Aug 2025316 PMAQI
22nd Aug 2025367 PMAQI
22nd Aug 2025368 PMAQI
22nd Aug 2025429 PMAQI
22nd Aug 20253710 PMAQI
22nd Aug 20253711 PMAQI
23rd Aug 20254012 AMAQI
23rd Aug 2025401 AMAQI
23rd Aug 2025402 AMAQI
23rd Aug 2025403 AMAQI
23rd Aug 2025384 AMAQI
23rd Aug 2025375 AMAQI
27°C24/32°C
23rd Aug 2025386 AMAQI
23rd Aug 2025357 AMAQI
23rd Aug 2025428 AMAQI
23rd Aug 2025389 AMAQI
23rd Aug 20253910 AMAQI
23rd Aug 20254011 AMAQI
23rd Aug 20254112 PMAQI
23rd Aug 2025271 PMAQI
23rd Aug 2025242 PMAQI
23rd Aug 2025343 PMAQI
23rd Aug 2025284 PMAQI
23rd Aug 2025275 PMAQI
23rd Aug 2025286 PMAQI
23rd Aug 2025447 PMAQI
23rd Aug 2025478 PMAQI
23rd Aug 2025489 PMAQI
23rd Aug 20254810 PMAQI
23rd Aug 20254411 PMAQI
24th Aug 20254212 AMAQI
24th Aug 2025391 AMAQI
24th Aug 2025422 AMAQI
24th Aug 2025413 AMAQI
24th Aug 2025434 AMAQI
24th Aug 2025425 AMAQI
27°C24/31°C
24th Aug 2025426 AMAQI
24th Aug 2025407 AMAQI
24th Aug 2025408 AMAQI
24th Aug 2025429 AMAQI
24th Aug 20253310 AMAQI
24th Aug 20253611 AMAQI
24th Aug 20254312 PMAQI
24th Aug 2025301 PMAQI
24th Aug 2025262 PMAQI
24th Aug 2025293 PMAQI
24th Aug 2025264 PMAQI
24th Aug 2025245 PMAQI
24th Aug 2025266 PMAQI
24th Aug 2025317 PMAQI
24th Aug 2025368 PMAQI
24th Aug 2025379 PMAQI
24th Aug 20253610 PMAQI
24th Aug 20253511 PMAQI
25th Aug 20253712 AMAQI
25th Aug 2025361 AMAQI
25th Aug 2025402 AMAQI
25th Aug 2025393 AMAQI
25th Aug 2025424 AMAQI
25th Aug 2025415 AMAQI
26°C24/28°C
25th Aug 2025406 AMAQI
25th Aug 2025407 AMAQI
25th Aug 2025368 AMAQI
25th Aug 2025419 AMAQI
25th Aug 20254510 AMAQI
25th Aug 20253311 AMAQI
25th Aug 20253612 PMAQI
25th Aug 2025291 PMAQI
25th Aug 2025262 PMAQI
25th Aug 2025203 PMAQI
25th Aug 2025284 PMAQI
25th Aug 2025255 PMAQI
25th Aug 2025306 PMAQI
25th Aug 2025307 PMAQI
25th Aug 2025378 PMAQI
25th Aug 2025389 PMAQI
25th Aug 20253710 PMAQI
25th Aug 20254011 PMAQI
26th Aug 20254012 AMAQI
26th Aug 2025371 AMAQI
26th Aug 2025412 AMAQI
26th Aug 2025383 AMAQI
26th Aug 2025374 AMAQI
26th Aug 2025385 AMAQI
25°C24/26°C
26th Aug 2025396 AMAQI
26th Aug 2025387 AMAQI
26th Aug 2025328 AMAQI
26th Aug 2025499 AMAQI
26th Aug 20253710 AMAQI
26th Aug 20254211 AMAQI
26th Aug 20253612 PMAQI
26th Aug 2025301 PMAQI
26th Aug 2025282 PMAQI
26th Aug 2025283 PMAQI
26th Aug 2025264 PMAQI
26th Aug 2025295 PMAQI
26th Aug 2025286 PMAQI
26th Aug 2025307 PMAQI
26th Aug 2025358 PMAQI
26th Aug 2025389 PMAQI
26th Aug 20253210 PMAQI
26th Aug 20253411 PMAQI
27th Aug 20253612 AMAQI
27th Aug 2025381 AMAQI
27th Aug 2025402 AMAQI
27th Aug 2025403 AMAQI
27th Aug 2025384 AMAQI
27th Aug 2025395 AMAQI
26°C23/30°C
27th Aug 2025406 AMAQI
27th Aug 2025387 AMAQI
27th Aug 2025338 AMAQI
27th Aug 2025379 AMAQI
27th Aug 20255210 AMAQI
27th Aug 20255111 AMAQI
27th Aug 20254412 PMAQI
27th Aug 2025321 PMAQI
27th Aug 2025312 PMAQI
27th Aug 2025303 PMAQI
27th Aug 2025214 PMAQI
27th Aug 2025205 PMAQI
27th Aug 2025236 PMAQI
27th Aug 2025307 PMAQI
27th Aug 2025348 PMAQI
27th Aug 2025349 PMAQI
27th Aug 20253010 PMAQI
27th Aug 20253211 PMAQI
28th Aug 20253112 AMAQI
28th Aug 2025371 AMAQI
28th Aug 2025382 AMAQI
28th Aug 2025383 AMAQI
28th Aug 2025394 AMAQI
28th Aug 2025375 AMAQI
26°C23/29°C
28th Aug 2025416 AMAQI
28th Aug 2025407 AMAQI
28th Aug 2025388 AMAQI
28th Aug 2025439 AMAQI
28th Aug 20253810 AMAQI
28th Aug 20253411 AMAQI
28th Aug 20253012 PMAQI
28th Aug 2025341 PMAQI
28th Aug 2025462 PMAQI
28th Aug 2025523 PMAQI
28th Aug 2025514 PMAQI
28th Aug 2025505 PMAQI
28th Aug 2025376 PMAQI
28th Aug 2025337 PMAQI
28th Aug 2025348 PMAQI
28th Aug 2025359 PMAQI
28th Aug 20253910 PMAQI
28th Aug 20253611 PMAQI
29th Aug 20253612 AMAQI
29th Aug 2025461 AMAQI
29th Aug 2025462 AMAQI
29th Aug 2025433 AMAQI
29th Aug 2025464 AMAQI
29th Aug 2025435 AMAQI
26°C23/31°C
29th Aug 2025456 AMAQI
29th Aug 2025457 AMAQI
29th Aug 2025478 AMAQI
29th Aug 2025429 AMAQI
29th Aug 20254610 AMAQI
29th Aug 20252611 AMAQI
29th Aug 20253812 PMAQI
29th Aug 2025261 PMAQI
29th Aug 2025372 PMAQI
29th Aug 2025393 PMAQI
29th Aug 2025344 PMAQI
29th Aug 2025335 PMAQI
29th Aug 2025366 PMAQI
29th Aug 2025417 PMAQI
29th Aug 2025418 PMAQI
29th Aug 2025379 PMAQI
29th Aug 20254410 PMAQI
29th Aug 20254311 PMAQI
30th Aug 20254012 AMAQI
30th Aug 2025451 AMAQI
30th Aug 2025442 AMAQI
30th Aug 2025423 AMAQI
30th Aug 2025434 AMAQI
30th Aug 2025435 AMAQI
25°C24/27°C
30th Aug 2025426 AMAQI
30th Aug 2025447 AMAQI
30th Aug 2025258 AMAQI
30th Aug 2025309 AMAQI
30th Aug 20253510 AMAQI
30th Aug 20253811 AMAQI
30th Aug 20253112 PMAQI
30th Aug 2025291 PMAQI
30th Aug 2025252 PMAQI
30th Aug 2025223 PMAQI
30th Aug 2025224 PMAQI
30th Aug 2025245 PMAQI
30th Aug 2025306 PMAQI
30th Aug 2025397 PMAQI
30th Aug 2025418 PMAQI
30th Aug 2025339 PMAQI
30th Aug 20253510 PMAQI
30th Aug 20253711 PMAQI
31st Aug 20254012 AMAQI
31st Aug 2025421 AMAQI
31st Aug 2025472 AMAQI
31st Aug 2025423 AMAQI
31st Aug 2025404 AMAQI
31st Aug 2025425 AMAQI
27°C25/30°C
31st Aug 2025406 AMAQI
31st Aug 2025417 AMAQI
31st Aug 2025318 AMAQI
31st Aug 2025289 AMAQI
31st Aug 20253610 AMAQI
31st Aug 20254011 AMAQI
31st Aug 20253812 PMAQI
31st Aug 2025311 PMAQI
31st Aug 2025322 PMAQI
31st Aug 2025363 PMAQI
31st Aug 2025344 PMAQI
31st Aug 2025285 PMAQI
31st Aug 2025286 PMAQI
31st Aug 2025327 PMAQI
31st Aug 2025358 PMAQI
31st Aug 2025359 PMAQI
31st Aug 20254510 PMAQI
31st Aug 20254611 PMAQI
1st Sep 20253412 AMAQI
1st Sep 2025401 AMAQI
1st Sep 2025442 AMAQI
1st Sep 2025423 AMAQI
1st Sep 2025404 AMAQI
1st Sep 2025435 AMAQI
26°C23/31°C
1st Sep 2025496 AMAQI
1st Sep 2025467 AMAQI
1st Sep 2025178 AMAQI
1st Sep 2025239 AMAQI
1st Sep 20252710 AMAQI
1st Sep 20253111 AMAQI
1st Sep 20253612 PMAQI
1st Sep 2025481 PMAQI
1st Sep 2025262 PMAQI
1st Sep 2025343 PMAQI
1st Sep 2025284 PMAQI
1st Sep 2025285 PMAQI
1st Sep 2025386 PMAQI
1st Sep 2025327 PMAQI
1st Sep 2025368 PMAQI
1st Sep 2025369 PMAQI
1st Sep 20253710 PMAQI
1st Sep 20254711 PMAQI
2nd Sep 20254212 AMAQI
2nd Sep 2025431 AMAQI
2nd Sep 2025432 AMAQI
2nd Sep 2025413 AMAQI
2nd Sep 2025404 AMAQI
2nd Sep 2025405 AMAQI
26°C24/30°C
2nd Sep 2025416 AMAQI
2nd Sep 2025467 AMAQI
2nd Sep 2025368 AMAQI
2nd Sep 2025369 AMAQI
2nd Sep 20253410 AMAQI
2nd Sep 20253411 AMAQI
2nd Sep 20253212 PMAQI
2nd Sep 2025301 PMAQI
2nd Sep 2025242 PMAQI
2nd Sep 2025273 PMAQI
2nd Sep 2025314 PMAQI
2nd Sep 2025315 PMAQI
2nd Sep 2025436 PMAQI
2nd Sep 2025357 PMAQI
2nd Sep 2025408 PMAQI
2nd Sep 2025349 PMAQI
2nd Sep 20253710 PMAQI
2nd Sep 20254211 PMAQI
3rd Sep 20254512 AMAQI
3rd Sep 2025421 AMAQI
3rd Sep 2025492 AMAQI
3rd Sep 2025473 AMAQI
3rd Sep 2025484 AMAQI
3rd Sep 2025415 AMAQI
27°C24/30°C
3rd Sep 2025476 AMAQI
3rd Sep 2025427 AMAQI
3rd Sep 2025288 AMAQI
3rd Sep 2025299 AMAQI
3rd Sep 20253510 AMAQI
3rd Sep 20254111 AMAQI
3rd Sep 20253312 PMAQI
3rd Sep 2025221 PMAQI
3rd Sep 2025332 PMAQI
3rd Sep 2025253 PMAQI
3rd Sep 2025264 PMAQI
3rd Sep 2025295 PMAQI
3rd Sep 2025356 PMAQI
3rd Sep 2025337 PMAQI
3rd Sep 2025368 PMAQI
3rd Sep 2025369 PMAQI
3rd Sep 20254110 PMAQI
3rd Sep 20254011 PMAQI
4th Sep 20253912 AMAQI
4th Sep 2025421 AMAQI
4th Sep 2025422 AMAQI
4th Sep 2025413 AMAQI
4th Sep 2025404 AMAQI
4th Sep 2025405 AMAQI
27°C25/29°C
4th Sep 2025396 AMAQI
4th Sep 2025407 AMAQI
4th Sep 2025398 AMAQI
4th Sep 2025439 AMAQI
4th Sep 20253710 AMAQI
4th Sep 20254311 AMAQI
4th Sep 20252712 PMAQI
4th Sep 2025281 PMAQI
4th Sep 2025262 PMAQI
4th Sep 2025313 PMAQI
4th Sep 2025284 PMAQI
4th Sep 2025245 PMAQI
4th Sep 2025296 PMAQI
4th Sep 2025227 PMAQI
4th Sep 2025228 PMAQI
4th Sep 2025209 PMAQI
4th Sep 20251710 PMAQI
4th Sep 20251711 PMAQI
5th Sep 20252712 AMAQI
5th Sep 2025361 AMAQI
5th Sep 2025372 AMAQI
5th Sep 2025383 AMAQI
5th Sep 2025384 AMAQI
5th Sep 2025405 AMAQI
27°C24/30°C
5th Sep 2025406 AMAQI
5th Sep 2025387 AMAQI
5th Sep 2025408 AMAQI
5th Sep 2025329 AMAQI
5th Sep 20253410 AMAQI
5th Sep 20252711 AMAQI
5th Sep 20252612 PMAQI
5th Sep 2025321 PMAQI
5th Sep 2025402 PMAQI
5th Sep 2025373 PMAQI
5th Sep 2025224 PMAQI
5th Sep 2025275 PMAQI
5th Sep 2025296 PMAQI
5th Sep 2025307 PMAQI
5th Sep 2025308 PMAQI
5th Sep 2025389 PMAQI
5th Sep 20253510 PMAQI
5th Sep 20254211 PMAQI
6th Sep 20253012 AMAQI
6th Sep 2025281 AMAQI
6th Sep 2025332 AMAQI
6th Sep 2025343 AMAQI
6th Sep 2025414 AMAQI
6th Sep 2025375 AMAQI
27°C24/31°C
6th Sep 2025376 AMAQI
6th Sep 2025357 AMAQI
6th Sep 2025218 AMAQI
6th Sep 2025249 AMAQI
6th Sep 20253310 AMAQI
6th Sep 20253511 AMAQI
6th Sep 20253312 PMAQI
6th Sep 2025251 PMAQI
6th Sep 2025192 PMAQI
6th Sep 2025273 PMAQI
6th Sep 2025304 PMAQI
6th Sep 2025315 PMAQI
6th Sep 2025296 PMAQI
6th Sep 2025267 PMAQI
6th Sep 2025298 PMAQI
6th Sep 2025389 PMAQI
6th Sep 20253410 PMAQI
6th Sep 20253611 PMAQI
7th Sep 20253912 AMAQI
7th Sep 2025341 AMAQI
7th Sep 2025372 AMAQI
7th Sep 2025443 AMAQI
7th Sep 2025384 AMAQI
7th Sep 2025405 AMAQI
27°C24/30°C
7th Sep 2025406 AMAQI
7th Sep 2025387 AMAQI
7th Sep 2025358 AMAQI
7th Sep 2025339 AMAQI
7th Sep 20253610 AMAQI
7th Sep 20254711 AMAQI
7th Sep 20254412 PMAQI
7th Sep 2025541 PMAQI
7th Sep 2025542 PMAQI
7th Sep 2025543 PMAQI
7th Sep 2025524 PMAQI
7th Sep 2025455 PMAQI
7th Sep 2025576 PMAQI
7th Sep 2025527 PMAQI
7th Sep 2025548 PMAQI
7th Sep 2025539 PMAQI
7th Sep 20255410 PMAQI
7th Sep 20255211 PMAQI
8th Sep 20254612 AMAQI
8th Sep 2025381 AMAQI
8th Sep 2025382 AMAQI
8th Sep 2025413 AMAQI
8th Sep 2025414 AMAQI
8th Sep 2025425 AMAQI
27°C24/31°C
8th Sep 2025426 AMAQI
8th Sep 2025407 AMAQI
8th Sep 2025458 AMAQI
8th Sep 2025529 AMAQI
8th Sep 20255210 AMAQI
8th Sep 20256011 AMAQI
8th Sep 20254712 PMAQI
8th Sep 2025431 PMAQI
8th Sep 2025462 PMAQI
8th Sep 2025273 PMAQI
8th Sep 2025304 PMAQI
8th Sep 2025355 PMAQI
8th Sep 2025266 PMAQI
8th Sep 2025367 PMAQI
8th Sep 2025438 PMAQI
8th Sep 2025489 PMAQI
8th Sep 20254710 PMAQI
8th Sep 20254611 PMAQI
9th Sep 20253612 AMAQI
9th Sep 2025411 AMAQI
9th Sep 2025392 AMAQI
9th Sep 2025443 AMAQI
9th Sep 2025444 AMAQI
9th Sep 2025445 AMAQI
27°C24/30°C
9th Sep 2025456 AMAQI
9th Sep 2025447 AMAQI
9th Sep 2025268 AMAQI
9th Sep 2025259 AMAQI
9th Sep 20252810 AMAQI
9th Sep 20252611 AMAQI
9th Sep 20252512 PMAQI
9th Sep 2025281 PMAQI
9th Sep 2025242 PMAQI
9th Sep 2025233 PMAQI
9th Sep 2025294 PMAQI
9th Sep 2025305 PMAQI
9th Sep 2025366 PMAQI
9th Sep 2025387 PMAQI
9th Sep 2025378 PMAQI
9th Sep 2025359 PMAQI
9th Sep 20253410 PMAQI
9th Sep 20253311 PMAQI
10th Sep 20253912 AMAQI
10th Sep 2025421 AMAQI
10th Sep 2025442 AMAQI
10th Sep 2025423 AMAQI
10th Sep 2025384 AMAQI
10th Sep 2025405 AMAQI
27°C24/32°C
10th Sep 2025406 AMAQI
10th Sep 2025397 AMAQI
10th Sep 2025208 AMAQI
10th Sep 2025229 AMAQI
10th Sep 20252410 AMAQI
10th Sep 20253211 AMAQI
10th Sep 20252912 PMAQI
10th Sep 2025261 PMAQI
10th Sep 2025252 PMAQI
10th Sep 2025213 PMAQI
10th Sep 2025334 PMAQI
10th Sep 2025315 PMAQI
10th Sep 2025336 PMAQI
10th Sep 2025357 PMAQI
10th Sep 2025418 PMAQI
10th Sep 2025399 PMAQI
10th Sep 20253810 PMAQI
10th Sep 20253811 PMAQI
11th Sep 20253912 AMAQI
11th Sep 2025401 AMAQI
11th Sep 2025402 AMAQI
11th Sep 2025373 AMAQI
11th Sep 2025384 AMAQI
11th Sep 2025365 AMAQI
27°C24/30°C
11th Sep 2025346 AMAQI
11th Sep 2025367 AMAQI
11th Sep 2025288 AMAQI
11th Sep 2025339 AMAQI
11th Sep 20252910 AMAQI
11th Sep 20253011 AMAQI
11th Sep 20252912 PMAQI
11th Sep 2025271 PMAQI
11th Sep 2025282 PMAQI
11th Sep 2025303 PMAQI
11th Sep 2025254 PMAQI
11th Sep 2025315 PMAQI
11th Sep 2025226 PMAQI
11th Sep 2025347 PMAQI
11th Sep 2025288 PMAQI
11th Sep 2025329 PMAQI
11th Sep 20252810 PMAQI
11th Sep 20252811 PMAQI
12th Sep 20253212 AMAQI
12th Sep 2025391 AMAQI
12th Sep 2025392 AMAQI
12th Sep 2025373 AMAQI
12th Sep 2025344 AMAQI
12th Sep 2025365 AMAQI
27°C24/31°C
12th Sep 2025366 AMAQI
12th Sep 2025357 AMAQI
12th Sep 2025278 AMAQI
12th Sep 2025319 AMAQI
12th Sep 20252710 AMAQI
12th Sep 20253711 AMAQI
12th Sep 20252912 PMAQI
12th Sep 2025241 PMAQI
12th Sep 2025222 PMAQI
12th Sep 2025323 PMAQI
12th Sep 2025314 PMAQI
12th Sep 2025345 PMAQI
12th Sep 2025356 PMAQI
12th Sep 2025377 PMAQI
12th Sep 2025348 PMAQI
12th Sep 2025349 PMAQI
12th Sep 20253410 PMAQI
12th Sep 20253611 PMAQI
13th Sep 20253612 AMAQI
13th Sep 2025381 AMAQI
13th Sep 2025362 AMAQI
13th Sep 2025343 AMAQI
13th Sep 2025354 AMAQI
13th Sep 2025345 AMAQI
27°C23/31°C
13th Sep 2025346 AMAQI
13th Sep 2025337 AMAQI
13th Sep 2025348 AMAQI
13th Sep 2025379 AMAQI
13th Sep 20253010 AMAQI
13th Sep 20252411 AMAQI
13th Sep 20252012 PMAQI
13th Sep 2025231 PMAQI
13th Sep 2025242 PMAQI
13th Sep 2025323 PMAQI
13th Sep 2025244 PMAQI
13th Sep 2025235 PMAQI
13th Sep 2025266 PMAQI
13th Sep 2025317 PMAQI
13th Sep 2025358 PMAQI
13th Sep 2025299 PMAQI
13th Sep 20253210 PMAQI
13th Sep 20253011 PMAQI
14th Sep 20253212 AMAQI
14th Sep 2025321 AMAQI
14th Sep 2025342 AMAQI
14th Sep 2025333 AMAQI
14th Sep 2025344 AMAQI
14th Sep 2025345 AMAQI
26°C23/30°C
14th Sep 2025346 AMAQI
14th Sep 2025347 AMAQI
14th Sep 2025258 AMAQI
14th Sep 2025239 AMAQI
14th Sep 20252610 AMAQI
14th Sep 20253111 AMAQI
14th Sep 20252612 PMAQI
14th Sep 2025261 PMAQI
14th Sep 2025212 PMAQI
14th Sep 2025263 PMAQI
14th Sep 2025224 PMAQI
14th Sep 2025195 PMAQI
14th Sep 2025286 PMAQI
14th Sep 2025247 PMAQI
14th Sep 2025318 PMAQI
14th Sep 2025359 PMAQI
14th Sep 20252910 PMAQI
14th Sep 20253011 PMAQI
15th Sep 20253012 AMAQI
15th Sep 2025341 AMAQI
15th Sep 2025352 AMAQI
15th Sep 2025333 AMAQI
15th Sep 2025324 AMAQI
15th Sep 2025345 AMAQI
26°C23/30°C
15th Sep 2025346 AMAQI
15th Sep 2025327 AMAQI
15th Sep 2025338 AMAQI
15th Sep 2025349 AMAQI
15th Sep 20253010 AMAQI
15th Sep 20253611 AMAQI
15th Sep 20252212 PMAQI
15th Sep 2025181 PMAQI
15th Sep 2025182 PMAQI
15th Sep 2025193 PMAQI
15th Sep 2025204 PMAQI
15th Sep 2025195 PMAQI
15th Sep 2025276 PMAQI
15th Sep 2025247 PMAQI
15th Sep 2025308 PMAQI
15th Sep 2025349 PMAQI
15th Sep 20253210 PMAQI
15th Sep 20253311 PMAQI
16th Sep 20253212 AMAQI
16th Sep 2025331 AMAQI
16th Sep 2025342 AMAQI
16th Sep 2025323 AMAQI
16th Sep 2025324 AMAQI
16th Sep 2025325 AMAQI
27°C23/30°C
16th Sep 2025336 AMAQI
16th Sep 2025327 AMAQI
16th Sep 2025278 AMAQI
16th Sep 2025259 AMAQI
16th Sep 20252910 AMAQI
16th Sep 20252311 AMAQI
16th Sep 20252412 PMAQI
16th Sep 2025271 PMAQI
16th Sep 2025242 PMAQI
16th Sep 2025233 PMAQI
16th Sep 2025254 PMAQI
16th Sep 2025245 PMAQI
16th Sep 2025206 PMAQI
16th Sep 2025267 PMAQI
16th Sep 2025308 PMAQI
16th Sep 2025349 PMAQI
16th Sep 20253410 PMAQI
16th Sep 20252811 PMAQI
17th Sep 20252612 AMAQI
17th Sep 2025331 AMAQI
17th Sep 2025342 AMAQI
17th Sep 2025323 AMAQI
17th Sep 2025314 AMAQI
17th Sep 2025305 AMAQI
26°C23/29°C
17th Sep 2025306 AMAQI
17th Sep 2025287 AMAQI
17th Sep 2025218 AMAQI
17th Sep 2025189 AMAQI
17th Sep 20252210 AMAQI
17th Sep 20252011 AMAQI
17th Sep 20252212 PMAQI
17th Sep 2025261 PMAQI
17th Sep 2025242 PMAQI
17th Sep 2025203 PMAQI
17th Sep 2025224 PMAQI
17th Sep 2025235 PMAQI
17th Sep 2025246 PMAQI
17th Sep 2025277 PMAQI
17th Sep 2025298 PMAQI
17th Sep 2025269 PMAQI
17th Sep 20252610 PMAQI
17th Sep 20252911 PMAQI
18th Sep 20252912 AMAQI
18th Sep 2025331 AMAQI
18th Sep 2025302 AMAQI
18th Sep 2025313 AMAQI
18th Sep 2025324 AMAQI
18th Sep 2025305 AMAQI
26°C24/30°C
18th Sep 2025306 AMAQI
18th Sep 2025327 AMAQI
18th Sep 2025328 AMAQI
18th Sep 2025379 AMAQI
18th Sep 20252610 AMAQI
18th Sep 20252311 AMAQI
18th Sep 20252812 PMAQI
18th Sep 2025171 PMAQI
18th Sep 2025182 PMAQI
18th Sep 2025183 PMAQI
18th Sep 2025174 PMAQI
18th Sep 2025265 PMAQI
18th Sep 2025346 PMAQI
18th Sep 2025287 PMAQI
18th Sep 2025288 PMAQI
18th Sep 2025309 PMAQI
18th Sep 20252810 PMAQI
18th Sep 20252711 PMAQI
19th Sep 20252612 AMAQI
19th Sep 2025281 AMAQI
19th Sep 2025322 AMAQI
19th Sep 2025323 AMAQI
19th Sep 2025304 AMAQI
19th Sep 2025305 AMAQI
26°C23/29°C
19th Sep 2025296 AMAQI
19th Sep 2025297 AMAQI
19th Sep 2025248 AMAQI
19th Sep 2025249 AMAQI
19th Sep 20252410 AMAQI
19th Sep 20252411 AMAQI
19th Sep 20253212 PMAQI
19th Sep 2025261 PMAQI
19th Sep 2025242 PMAQI
19th Sep 2025223 PMAQI
19th Sep 2025204 PMAQI
19th Sep 2025195 PMAQI
19th Sep 2025226 PMAQI
19th Sep 2025257 PMAQI
19th Sep 2025328 PMAQI
19th Sep 2025349 PMAQI
19th Sep 20253010 PMAQI
19th Sep 20252911 PMAQI
20th Sep 20252812 AMAQI
20th Sep 2025281 AMAQI
20th Sep 2025322 AMAQI
20th Sep 2025303 AMAQI
20th Sep 2025304 AMAQI
20th Sep 2025305 AMAQI
27°C24/31°C
20th Sep 2025306 AMAQI
6 AM20th Sep 2025297 AMAQI
20th Sep 2025258 AMAQI
20th Sep 2025269 AMAQI
20th Sep 20252910 AMAQI
20th Sep 20252911 AMAQI
12 PM
6 PM
12 AM
5 AM
--°C/°C
Day time
Avg. Highest Time
6 AM - 7 AM
38AQI
2 hours / Day
60 hours / Month
Avg. Lowest Time
2 PM
28AQI
1 hours / Day
30 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 6 AM to 7 AM (Avg. 38), while the lowest AQI was between 2 PM to 2 PM (Avg. 28).
Night time
Avg. Highest Time
2 AM - 5 AM
38AQI
4 hours / Day
120 hours / Month
Avg. Lowest Time
7 PM
32AQI
1 hours / Day
30 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 2 AM to 5 AM (Avg. 38), while the lowest AQI was between 7 PM to 7 PM (Avg. 32).
2025 Days Vs Air Quality
Land Environment And Resources Bureau, Basuo, Hainan, China
2025
47%
123
48%
124
5%
14
Total number of days with different AQI categories in last 263 days in 2025 (102 days remaining)
Good
123 DaysModerate
124 DaysPoor
14 DaysUnhealthy
0 DaysSevere
0 DaysHazardous
0 DaysUnder WHO’s Safe Air Quality Limits: 47%
Health Risk Level:
Significant
In 2025, 47% of 263 days were within WHO’s safe air quality limits, and 53% 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.
-1th undefined 2025
-1th undefined 2025
-1th undefined 2025
1st January 2025
114AQI
114AQI
2nd January 2025
95AQI
95AQI
3rd January 2025
105AQI
105AQI
4th January 2025
95AQI
95AQI
5th January 2025
118AQI
118AQI
6th January 2025
113AQI
113AQI
7th January 2025
99AQI
99AQI
8th January 2025
98AQI
98AQI
9th January 2025
113AQI
113AQI
10th January 2025
105AQI
105AQI
11th January 2025
97AQI
97AQI
12th January 2025
98AQI
98AQI
13th January 2025
86AQI
86AQI
14th January 2025
84AQI
84AQI
15th January 2025
93AQI
93AQI
16th January 2025
97AQI
97AQI
17th January 2025
106AQI
106AQI
18th January 2025
91AQI
91AQI
19th January 2025
110AQI
110AQI
20th January 2025
118AQI
118AQI
21st January 2025
109AQI
109AQI
22nd January 2025
126AQI
126AQI
23rd January 2025
103AQI
103AQI
24th January 2025
82AQI
82AQI
25th January 2025
85AQI
85AQI
26th January 2025
60AQI
60AQI
27th January 2025
71AQI
71AQI
28th January 2025
75AQI
75AQI
29th January 2025
91AQI
91AQI
30th January 2025
73AQI
73AQI
31st January 2025
81AQI
81AQI
1st February 2025
60AQI
60AQI
2nd February 2025
71AQI
71AQI
3rd February 2025
57AQI
57AQI
4th February 2025
55AQI
55AQI
5th February 2025
55AQI
55AQI
6th February 2025
67AQI
67AQI
7th February 2025
63AQI
63AQI
8th February 2025
60AQI
60AQI
9th February 2025
70AQI
70AQI
10th February 2025
63AQI
63AQI
11th February 2025
67AQI
67AQI
12th February 2025
62AQI
62AQI
13th February 2025
70AQI
70AQI
14th February 2025
59AQI
59AQI
15th February 2025
85AQI
85AQI
16th February 2025
57AQI
57AQI
17th February 2025
80AQI
80AQI
18th February 2025
68AQI
68AQI
19th February 2025
81AQI
81AQI
20th February 2025
65AQI
65AQI
21st February 2025
65AQI
65AQI
22nd February 2025
55AQI
55AQI
23rd February 2025
45AQI
45AQI
24th February 2025
43AQI
43AQI
25th February 2025
44AQI
44AQI
26th February 2025
58AQI
58AQI
27th February 2025
66AQI
66AQI
28th February 2025
57AQI
57AQI
1st March 2025
63AQI
63AQI
2nd March 2025
56AQI
56AQI
3rd March 2025
73AQI
73AQI
4th March 2025
65AQI
65AQI
5th March 2025
76AQI
76AQI
6th March 2025
44AQI
44AQI
7th March 2025
52AQI
52AQI
8th March 2025
37AQI
37AQI
9th March 2025
61AQI
61AQI
10th March 2025
58AQI
58AQI
11th March 2025
61AQI
61AQI
12th March 2025
49AQI
49AQI
13th March 2025
50AQI
50AQI
14th March 2025
45AQI
45AQI
15th March 2025
62AQI
62AQI
16th March 2025
56AQI
56AQI
17th March 2025
71AQI
71AQI
18th March 2025
72AQI
72AQI
19th March 2025
84AQI
84AQI
20th March 2025
84AQI
84AQI
21st March 2025
88AQI
88AQI
22nd March 2025
84AQI
84AQI
23rd March 2025
83AQI
83AQI
24th March 2025
82AQI
82AQI
25th March 2025
88AQI
88AQI
26th March 2025
80AQI
80AQI
27th March 2025
89AQI
89AQI
28th March 2025
85AQI
85AQI
29th March 2025
68AQI
68AQI
30th March 2025
50AQI
50AQI
31st March 2025
43AQI
43AQI
1st April 2025
49AQI
49AQI
2nd April 2025
66AQI
66AQI
3rd April 2025
65AQI
65AQI
4th April 2025
63AQI
63AQI
5th April 2025
70AQI
70AQI
6th April 2025
52AQI
52AQI
7th April 2025
63AQI
63AQI
8th April 2025
57AQI
57AQI
9th April 2025
72AQI
72AQI
10th April 2025
75AQI
75AQI
11th April 2025
82AQI
82AQI
12th April 2025
72AQI
72AQI
13th April 2025
124AQI
124AQI
14th April 2025
119AQI
119AQI
15th April 2025
100AQI
100AQI
16th April 2025
89AQI
89AQI
17th April 2025
90AQI
90AQI
18th April 2025
80AQI
80AQI
19th April 2025
66AQI
66AQI
20th April 2025
71AQI
71AQI
21st April 2025
67AQI
67AQI
22nd April 2025
74AQI
74AQI
23rd April 2025
62AQI
62AQI
24th April 2025
69AQI
69AQI
25th April 2025
69AQI
69AQI
26th April 2025
61AQI
61AQI
27th April 2025
65AQI
65AQI
28th April 2025
61AQI
61AQI
29th April 2025
49AQI
49AQI
30th April 2025
56AQI
56AQI
1st May 2025
58AQI
58AQI
2nd May 2025
64AQI
64AQI
3rd May 2025
66AQI
66AQI
4th May 2025
70AQI
70AQI
5th May 2025
59AQI
59AQI
6th May 2025
67AQI
67AQI
7th May 2025
72AQI
72AQI
8th May 2025
66AQI
66AQI
9th May 2025
62AQI
62AQI
10th May 2025
59AQI
59AQI
11th May 2025
66AQI
66AQI
12th May 2025
66AQI
66AQI
13th May 2025
66AQI
66AQI
14th May 2025
59AQI
59AQI
15th May 2025
45AQI
45AQI
16th May 2025
42AQI
42AQI
17th May 2025
47AQI
47AQI
18th May 2025
47AQI
47AQI
19th May 2025
49AQI
49AQI
20th May 2025
49AQI
49AQI
21st May 2025
50AQI
50AQI
22nd May 2025
42AQI
42AQI
23rd May 2025
49AQI
49AQI
24th May 2025
48AQI
48AQI
25th May 2025
45AQI
45AQI
26th May 2025
61AQI
61AQI
27th May 2025
50AQI
50AQI
28th May 2025
44AQI
44AQI
29th May 2025
43AQI
43AQI
30th May 2025
49AQI
49AQI
31st May 2025
42AQI
42AQI
1st June 2025
44AQI
44AQI
2nd June 2025
46AQI
46AQI
3rd June 2025
51AQI
51AQI
4th June 2025
59AQI
59AQI
5th June 2025
60AQI
60AQI
6th June 2025
60AQI
60AQI
7th June 2025
58AQI
58AQI
8th June 2025
58AQI
58AQI
9th June 2025
63AQI
63AQI
10th June 2025
62AQI
62AQI
11th June 2025
49AQI
49AQI
12th June 2025
39AQI
39AQI
13th June 2025
48AQI
48AQI
14th June 2025
43AQI
43AQI
15th June 2025
43AQI
43AQI
16th June 2025
46AQI
46AQI
17th June 2025
47AQI
47AQI
18th June 2025
38AQI
38AQI
19th June 2025
37AQI
37AQI
20th June 2025
36AQI
36AQI
21st June 2025
39AQI
39AQI
22nd June 2025
43AQI
43AQI
23rd June 2025
38AQI
38AQI
24th June 2025
39AQI
39AQI
25th June 2025
35AQI
35AQI
26th June 2025
37AQI
37AQI
27th June 2025
35AQI
35AQI
28th June 2025
32AQI
32AQI
29th June 2025
32AQI
32AQI
30th June 2025
30AQI
30AQI
1st July 2025
31AQI
31AQI
2nd July 2025
29AQI
29AQI
3rd July 2025
27AQI
27AQI
4th July 2025
27AQI
27AQI
5th July 2025
29AQI
29AQI
6th July 2025
29AQI
29AQI
7th July 2025
28AQI
28AQI
8th July 2025
33AQI
33AQI
9th July 2025
38AQI
38AQI
10th July 2025
40AQI
40AQI
11th July 2025
44AQI
44AQI
12th July 2025
38AQI
38AQI
13th July 2025
42AQI
42AQI
14th July 2025
45AQI
45AQI
15th July 2025
47AQI
47AQI
16th July 2025
43AQI
43AQI
17th July 2025
42AQI
42AQI
18th July 2025
42AQI
42AQI
19th July 2025
39AQI
39AQI
20th July 2025
37AQI
37AQI
21st July 2025
33AQI
33AQI
22nd July 2025
31AQI
31AQI
23rd July 2025
30AQI
30AQI
24th July 2025
31AQI
31AQI
25th July 2025
32AQI
32AQI
26th July 2025
32AQI
32AQI
27th July 2025
32AQI
32AQI
28th July 2025
29AQI
29AQI
29th July 2025
29AQI
29AQI
30th July 2025
32AQI
32AQI
31st July 2025
42AQI
42AQI
1st August 2025
54AQI
54AQI
2nd August 2025
55AQI
55AQI
3rd August 2025
57AQI
57AQI
4th August 2025
55AQI
55AQI
5th August 2025
53AQI
53AQI
6th August 2025
51AQI
51AQI
7th August 2025
51AQI
51AQI
8th August 2025
50AQI
50AQI
9th August 2025
49AQI
49AQI
10th August 2025
48AQI
48AQI
11th August 2025
45AQI
45AQI
12th August 2025
48AQI
48AQI
13th August 2025
44AQI
44AQI
14th August 2025
39AQI
39AQI
15th August 2025
38AQI
38AQI
16th August 2025
34AQI
34AQI
17th August 2025
33AQI
33AQI
18th August 2025
33AQI
33AQI
19th August 2025
32AQI
32AQI
20th August 2025
34AQI
34AQI
21st August 2025
35AQI
35AQI
22nd August 2025
34AQI
34AQI
23rd August 2025
38AQI
38AQI
24th August 2025
36AQI
36AQI
25th August 2025
35AQI
35AQI
26th August 2025
35AQI
35AQI
27th August 2025
35AQI
35AQI
28th August 2025
39AQI
39AQI
29th August 2025
40AQI
40AQI
30th August 2025
36AQI
36AQI
31st August 2025
37AQI
37AQI
1st September 2025
37AQI
37AQI
2nd September 2025
37AQI
37AQI
3rd September 2025
38AQI
38AQI
4th September 2025
31AQI
31AQI
5th September 2025
34AQI
34AQI
6th September 2025
32AQI
32AQI
7th September 2025
45AQI
45AQI
8th September 2025
42AQI
42AQI
9th September 2025
35AQI
35AQI
10th September 2025
35AQI
35AQI
11th September 2025
32AQI
32AQI
12th September 2025
34AQI
34AQI
13th September 2025
31AQI
31AQI
14th September 2025
29AQI
29AQI
15th September 2025
29AQI
29AQI
16th September 2025
29AQI
29AQI
17th September 2025
26AQI
26AQI
18th September 2025
28AQI
28AQI
19th September 2025
20th September 2025
21st September 2025
22nd September 2025
23rd September 2025
24th September 2025
25th September 2025
26th September 2025
27th September 2025
28th September 2025
29th September 2025
30th September 2025
1st October 2025
2nd October 2025
3rd October 2025
4th October 2025
5th October 2025
6th October 2025
7th October 2025
8th October 2025
9th October 2025
10th October 2025
11th October 2025
12th October 2025
13th October 2025
14th October 2025
15th October 2025
16th October 2025
17th October 2025
18th October 2025
19th October 2025
20th October 2025
21st October 2025
22nd October 2025
23rd October 2025
24th October 2025
25th October 2025
26th October 2025
27th October 2025
28th October 2025
29th October 2025
30th October 2025
31st October 2025
1st November 2025
2nd November 2025
3rd November 2025
4th November 2025
5th November 2025
6th November 2025
7th November 2025
8th November 2025
9th November 2025
10th November 2025
11th November 2025
12th November 2025
13th November 2025
14th November 2025
15th November 2025
16th November 2025
17th November 2025
18th November 2025
19th November 2025
20th November 2025
21st November 2025
22nd November 2025
23rd November 2025
24th November 2025
25th November 2025
26th November 2025
27th November 2025
28th November 2025
29th November 2025
30th November 2025
1st December 2025
2nd December 2025
3rd December 2025
4th December 2025
5th December 2025
6th December 2025
7th December 2025
8th December 2025
9th December 2025
10th December 2025
11th December 2025
12th December 2025
13th December 2025
14th December 2025
15th December 2025
16th December 2025
17th December 2025
18th December 2025
19th December 2025
20th December 2025
21st December 2025
22nd December 2025
23rd December 2025
24th December 2025
25th December 2025
26th December 2025
27th December 2025
28th December 2025
29th December 2025
30th December 2025
31st December 2025
96AQI
62AQI
66AQI
72AQI
55AQI
45AQI
35AQI
42AQI
34AQI
No. of days
Jan.Feb.Mar.Apr.MayJun.Jul.Aug.Sep.Oct.Nov.Dec.Total Days
202557AQI
19
12
3
25
7
24
2
26
2
16
15
22
8
31
24
7
18
123
124
14
Highest AQI recorded in
January96AQI
Lowest AQI recorded in
September34AQI
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
December88AQI
Lowest AQI recorded in
July31AQI
202345AQI
3
26
5
29
5
Highest AQI recorded in
November47AQI
Lowest AQI recorded in
December45AQI
202262AQI
1
11
1
11
Highest AQI recorded in
January62AQI
Lowest AQI recorded in
January62AQI
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
January90AQI
Lowest AQI recorded in
September33AQI
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
December80AQI
Lowest AQI recorded in
July31AQI
Most & Least Polluted Years Over the Last 6 Years
Most Polluted Year Recorded
2022(Avg.)
62AQILeast Polluted Year Recorded
2023(Avg.)
45AQILand Environment And Resources Bureau's annual 2025 AQI (57) shows an average percentage change of 11.7% (worsened AQI) compared to previous years: 2020 (52), 2021 (57), 2022 (62), 2023 (45), 2024 (46).
