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+
September Air Quality Analysis
Haikou, Hainan, China
2021
2022
2023
2024
2025
AQI
.
Days
AQI Trends: Highest and Lowest
Highest AQI recorded on
6th Sep 2022
104AQILowest AQI recorded on
8th Sep 2021
14AQISame Day Analysis (19th September ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 4th highest AQI at 30 of Good air quality, showing improvement over 2023, 2022 and 2021 on the same day.
Download 2024 Annual Data
World Air Quality Report
Day & Night AQI Trend: 20th Sep - 21st Sep 2025
Haikou, Hainan, China
AQI
Day
Night
.
6 AM20th Sep 2025
6 PM
5 AM21st Sep 2025
Day time
Avg. Highest Time
12AMNaNth undefined
AQI
Avg. Lowest Time
12AMNaNth undefined
AQI
Night time
Avg. Highest Time
11PM20th Sep
49AQI
Avg. Lowest Time
11AM20th Sep
33AQI
In the last 24 hours,
Haikou's AQI reached its highest point of 49 at 11 PM during the Night, while the lowest point, undefined, was recorded at 5 AM during the Night between 20th Sep and 21st Sep 2025.
Day & Night AQI Trend : Aug - Sep 2025
Haikou, Hainan, China
AugSep
22nd - 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 - 21st21st
Day
Night
22nd Aug 2025376 AMAQI
22nd Aug 2025387 AMAQI
22nd Aug 2025348 AMAQI
22nd Aug 2025279 AMAQI
22nd Aug 20252610 AMAQI
22nd Aug 20253011 AMAQI
22nd Aug 20253712 PMAQI
22nd Aug 2025351 PMAQI
22nd Aug 2025292 PMAQI
22nd Aug 2025303 PMAQI
22nd Aug 2025284 PMAQI
22nd Aug 2025385 PMAQI
22nd Aug 2025366 PMAQI
22nd Aug 2025397 PMAQI
22nd Aug 2025428 PMAQI
22nd Aug 2025459 PMAQI
22nd Aug 20254010 PMAQI
22nd Aug 20253811 PMAQI
23rd Aug 20254012 AMAQI
23rd Aug 2025401 AMAQI
23rd Aug 2025392 AMAQI
23rd Aug 2025393 AMAQI
23rd Aug 2025384 AMAQI
23rd Aug 2025375 AMAQI
29°C26/32°C
23rd Aug 2025386 AMAQI
23rd Aug 2025377 AMAQI
23rd Aug 2025408 AMAQI
23rd Aug 2025389 AMAQI
23rd Aug 20253210 AMAQI
23rd Aug 20253611 AMAQI
23rd Aug 20254212 PMAQI
23rd Aug 2025361 PMAQI
23rd Aug 2025302 PMAQI
23rd Aug 2025313 PMAQI
23rd Aug 2025314 PMAQI
23rd Aug 2025305 PMAQI
23rd Aug 2025316 PMAQI
23rd Aug 2025387 PMAQI
23rd Aug 2025408 PMAQI
23rd Aug 2025449 PMAQI
23rd Aug 20254310 PMAQI
23rd Aug 20254311 PMAQI
24th Aug 20254012 AMAQI
24th Aug 2025401 AMAQI
24th Aug 2025412 AMAQI
24th Aug 2025413 AMAQI
24th Aug 2025414 AMAQI
24th Aug 2025415 AMAQI
28°C26/31°C
24th Aug 2025426 AMAQI
24th Aug 2025407 AMAQI
24th Aug 2025468 AMAQI
24th Aug 2025399 AMAQI
24th Aug 20253510 AMAQI
24th Aug 20253411 AMAQI
24th Aug 20253512 PMAQI
24th Aug 2025341 PMAQI
24th Aug 2025302 PMAQI
24th Aug 2025363 PMAQI
24th Aug 2025384 PMAQI
24th Aug 2025355 PMAQI
24th Aug 2025366 PMAQI
24th Aug 2025387 PMAQI
24th Aug 2025408 PMAQI
24th Aug 2025399 PMAQI
24th Aug 20254010 PMAQI
24th Aug 20254011 PMAQI
25th Aug 20253912 AMAQI
25th Aug 2025391 AMAQI
25th Aug 2025382 AMAQI
25th Aug 2025393 AMAQI
25th Aug 2025414 AMAQI
25th Aug 2025425 AMAQI
27°C26/28°C
25th Aug 2025416 AMAQI
25th Aug 2025407 AMAQI
25th Aug 2025278 AMAQI
25th Aug 2025319 AMAQI
25th Aug 20252710 AMAQI
25th Aug 20252611 AMAQI
25th Aug 20253012 PMAQI
25th Aug 2025311 PMAQI
25th Aug 2025312 PMAQI
25th Aug 2025313 PMAQI
25th Aug 2025304 PMAQI
25th Aug 2025315 PMAQI
25th Aug 2025276 PMAQI
25th Aug 2025357 PMAQI
25th Aug 2025358 PMAQI
25th Aug 2025359 PMAQI
25th Aug 20253310 PMAQI
25th Aug 20253311 PMAQI
26th Aug 20253612 AMAQI
26th Aug 2025391 AMAQI
26th Aug 2025412 AMAQI
26th Aug 2025393 AMAQI
26th Aug 2025384 AMAQI
26th Aug 2025395 AMAQI
26°C25/27°C
26th Aug 2025396 AMAQI
26th Aug 2025397 AMAQI
26th Aug 2025318 AMAQI
26th Aug 2025379 AMAQI
26th Aug 20253510 AMAQI
26th Aug 20253011 AMAQI
26th Aug 20253412 PMAQI
26th Aug 2025351 PMAQI
26th Aug 2025322 PMAQI
26th Aug 2025333 PMAQI
26th Aug 2025264 PMAQI
26th Aug 2025255 PMAQI
26th Aug 2025306 PMAQI
26th Aug 2025347 PMAQI
26th Aug 2025378 PMAQI
26th Aug 2025359 PMAQI
26th Aug 20253410 PMAQI
26th Aug 20253311 PMAQI
27th Aug 20254012 AMAQI
27th Aug 2025401 AMAQI
27th Aug 2025412 AMAQI
27th Aug 2025393 AMAQI
27th Aug 2025384 AMAQI
27th Aug 2025395 AMAQI
27°C26/30°C
27th Aug 2025396 AMAQI
27th Aug 2025397 AMAQI
27th Aug 2025388 AMAQI
27th Aug 2025379 AMAQI
27th Aug 20254510 AMAQI
27th Aug 20255111 AMAQI
27th Aug 20254912 PMAQI
27th Aug 2025331 PMAQI
27th Aug 2025372 PMAQI
27th Aug 2025323 PMAQI
27th Aug 2025364 PMAQI
27th Aug 2025335 PMAQI
27th Aug 2025336 PMAQI
27th Aug 2025357 PMAQI
27th Aug 2025348 PMAQI
27th Aug 2025439 PMAQI
27th Aug 20253610 PMAQI
27th Aug 20253911 PMAQI
28th Aug 20254212 AMAQI
28th Aug 2025401 AMAQI
28th Aug 2025412 AMAQI
28th Aug 2025413 AMAQI
28th Aug 2025424 AMAQI
28th Aug 2025405 AMAQI
27°C26/30°C
28th Aug 2025416 AMAQI
28th Aug 2025407 AMAQI
28th Aug 2025438 AMAQI
28th Aug 2025509 AMAQI
28th Aug 20254810 AMAQI
28th Aug 20254011 AMAQI
28th Aug 20254212 PMAQI
28th Aug 2025391 PMAQI
28th Aug 2025422 PMAQI
28th Aug 2025433 PMAQI
28th Aug 2025524 PMAQI
28th Aug 2025465 PMAQI
28th Aug 2025466 PMAQI
28th Aug 2025387 PMAQI
28th Aug 2025348 PMAQI
28th Aug 2025369 PMAQI
28th Aug 20253910 PMAQI
28th Aug 20253611 PMAQI
29th Aug 20253612 AMAQI
29th Aug 2025451 AMAQI
29th Aug 2025462 AMAQI
29th Aug 2025443 AMAQI
29th Aug 2025464 AMAQI
29th Aug 2025465 AMAQI
27°C25/30°C
29th Aug 2025466 AMAQI
29th Aug 2025467 AMAQI
29th Aug 2025528 AMAQI
29th Aug 2025389 AMAQI
29th Aug 20254310 AMAQI
29th Aug 20254311 AMAQI
29th Aug 20254412 PMAQI
29th Aug 2025401 PMAQI
29th Aug 2025472 PMAQI
29th Aug 2025393 PMAQI
29th Aug 2025424 PMAQI
29th Aug 2025405 PMAQI
29th Aug 2025486 PMAQI
29th Aug 2025477 PMAQI
29th Aug 2025458 PMAQI
29th Aug 2025409 PMAQI
29th Aug 20253810 PMAQI
29th Aug 20254011 PMAQI
30th Aug 20254012 AMAQI
30th Aug 2025471 AMAQI
30th Aug 2025462 AMAQI
30th Aug 2025473 AMAQI
30th Aug 2025464 AMAQI
30th Aug 2025465 AMAQI
27°C26/28°C
30th Aug 2025446 AMAQI
30th Aug 2025457 AMAQI
30th Aug 2025298 AMAQI
30th Aug 2025269 AMAQI
30th Aug 20252810 AMAQI
30th Aug 20253211 AMAQI
30th Aug 20253112 PMAQI
30th Aug 2025341 PMAQI
30th Aug 2025282 PMAQI
30th Aug 2025333 PMAQI
30th Aug 2025324 PMAQI
30th Aug 2025345 PMAQI
30th Aug 2025336 PMAQI
30th Aug 2025377 PMAQI
30th Aug 2025408 PMAQI
30th Aug 2025429 PMAQI
30th Aug 20254010 PMAQI
30th Aug 20254011 PMAQI
31st Aug 20254012 AMAQI
31st Aug 2025411 AMAQI
31st Aug 2025492 AMAQI
31st Aug 2025443 AMAQI
31st Aug 2025424 AMAQI
31st Aug 2025435 AMAQI
27°C26/28°C
31st Aug 2025436 AMAQI
31st Aug 2025427 AMAQI
31st Aug 2025308 AMAQI
31st Aug 2025289 AMAQI
31st Aug 20252810 AMAQI
31st Aug 20252511 AMAQI
31st Aug 20253112 PMAQI
31st Aug 2025361 PMAQI
31st Aug 2025342 PMAQI
31st Aug 2025353 PMAQI
31st Aug 2025344 PMAQI
31st Aug 2025275 PMAQI
31st Aug 2025306 PMAQI
31st Aug 2025357 PMAQI
31st Aug 2025358 PMAQI
31st Aug 2025389 PMAQI
31st Aug 20254310 PMAQI
31st Aug 20254311 PMAQI
1st Sep 20253612 AMAQI
1st Sep 2025411 AMAQI
1st Sep 2025452 AMAQI
1st Sep 2025443 AMAQI
1st Sep 2025414 AMAQI
1st Sep 2025445 AMAQI
27°C26/29°C
1st Sep 2025486 AMAQI
1st Sep 2025487 AMAQI
1st Sep 2025268 AMAQI
1st Sep 2025269 AMAQI
1st Sep 20253210 AMAQI
1st Sep 20253011 AMAQI
1st Sep 20252912 PMAQI
1st Sep 2025361 PMAQI
1st Sep 2025282 PMAQI
1st Sep 2025243 PMAQI
1st Sep 2025244 PMAQI
1st Sep 2025295 PMAQI
1st Sep 2025316 PMAQI
1st Sep 2025367 PMAQI
1st Sep 2025408 PMAQI
1st Sep 2025379 PMAQI
1st Sep 20253910 PMAQI
1st Sep 20254211 PMAQI
2nd Sep 20254012 AMAQI
2nd Sep 2025431 AMAQI
2nd Sep 2025432 AMAQI
2nd Sep 2025433 AMAQI
2nd Sep 2025414 AMAQI
2nd Sep 2025405 AMAQI
27°C26/30°C
2nd Sep 2025426 AMAQI
2nd Sep 2025457 AMAQI
2nd Sep 2025368 AMAQI
2nd Sep 2025449 AMAQI
2nd Sep 20253410 AMAQI
2nd Sep 20252611 AMAQI
2nd Sep 20252512 PMAQI
2nd Sep 2025291 PMAQI
2nd Sep 2025302 PMAQI
2nd Sep 2025253 PMAQI
2nd Sep 2025284 PMAQI
2nd Sep 2025245 PMAQI
2nd Sep 2025276 PMAQI
2nd Sep 2025337 PMAQI
2nd Sep 2025418 PMAQI
2nd Sep 2025409 PMAQI
2nd Sep 20253810 PMAQI
2nd Sep 20254111 PMAQI
3rd Sep 20254012 AMAQI
3rd Sep 2025401 AMAQI
3rd Sep 2025482 AMAQI
3rd Sep 2025453 AMAQI
3rd Sep 2025434 AMAQI
3rd Sep 2025415 AMAQI
28°C26/30°C
3rd Sep 2025416 AMAQI
3rd Sep 2025417 AMAQI
3rd Sep 2025298 AMAQI
3rd Sep 2025379 AMAQI
3rd Sep 20253010 AMAQI
3rd Sep 20253311 AMAQI
3rd Sep 20253012 PMAQI
3rd Sep 2025301 PMAQI
3rd Sep 2025342 PMAQI
3rd Sep 2025293 PMAQI
3rd Sep 2025294 PMAQI
3rd Sep 2025275 PMAQI
3rd Sep 2025286 PMAQI
3rd Sep 2025367 PMAQI
3rd Sep 2025418 PMAQI
3rd Sep 2025459 PMAQI
3rd Sep 20254010 PMAQI
3rd Sep 20254011 PMAQI
4th Sep 20253812 AMAQI
4th Sep 2025431 AMAQI
4th Sep 2025432 AMAQI
4th Sep 2025423 AMAQI
4th Sep 2025414 AMAQI
4th Sep 2025415 AMAQI
28°C26/30°C
4th Sep 2025396 AMAQI
4th Sep 2025407 AMAQI
4th Sep 2025358 AMAQI
4th Sep 2025439 AMAQI
4th Sep 20254310 AMAQI
4th Sep 20254611 AMAQI
4th Sep 20253412 PMAQI
4th Sep 2025301 PMAQI
4th Sep 2025272 PMAQI
4th Sep 2025223 PMAQI
4th Sep 2025204 PMAQI
4th Sep 2025215 PMAQI
4th Sep 2025236 PMAQI
4th Sep 2025247 PMAQI
4th Sep 2025248 PMAQI
4th Sep 2025269 PMAQI
4th Sep 20252510 PMAQI
4th Sep 20252511 PMAQI
5th Sep 20253612 AMAQI
5th Sep 2025391 AMAQI
5th Sep 2025382 AMAQI
5th Sep 2025383 AMAQI
5th Sep 2025384 AMAQI
5th Sep 2025435 AMAQI
28°C26/30°C
5th Sep 2025406 AMAQI
5th Sep 2025397 AMAQI
5th Sep 2025388 AMAQI
5th Sep 2025439 AMAQI
5th Sep 20253310 AMAQI
5th Sep 20252811 AMAQI
5th Sep 20252812 PMAQI
5th Sep 2025301 PMAQI
5th Sep 2025332 PMAQI
5th Sep 2025283 PMAQI
5th Sep 2025264 PMAQI
5th Sep 2025275 PMAQI
5th Sep 2025296 PMAQI
5th Sep 2025297 PMAQI
5th Sep 2025328 PMAQI
5th Sep 2025339 PMAQI
5th Sep 20253610 PMAQI
5th Sep 20253111 PMAQI
6th Sep 20252912 AMAQI
6th Sep 2025341 AMAQI
6th Sep 2025322 AMAQI
6th Sep 2025343 AMAQI
6th Sep 2025364 AMAQI
6th Sep 2025365 AMAQI
28°C26/30°C
6th Sep 2025366 AMAQI
6th Sep 2025357 AMAQI
6th Sep 2025238 AMAQI
6th Sep 2025339 AMAQI
6th Sep 20252710 AMAQI
6th Sep 20252611 AMAQI
6th Sep 20252712 PMAQI
6th Sep 2025241 PMAQI
6th Sep 2025242 PMAQI
6th Sep 2025263 PMAQI
6th Sep 2025244 PMAQI
6th Sep 2025255 PMAQI
6th Sep 2025276 PMAQI
6th Sep 2025287 PMAQI
6th Sep 2025288 PMAQI
6th Sep 2025379 PMAQI
6th Sep 20253410 PMAQI
6th Sep 20253811 PMAQI
7th Sep 20253812 AMAQI
7th Sep 2025341 AMAQI
7th Sep 2025342 AMAQI
7th Sep 2025373 AMAQI
7th Sep 2025334 AMAQI
7th Sep 2025325 AMAQI
28°C26/31°C
7th Sep 2025346 AMAQI
7th Sep 2025357 AMAQI
7th Sep 2025488 AMAQI
7th Sep 2025479 AMAQI
7th Sep 20254910 AMAQI
7th Sep 20255111 AMAQI
7th Sep 20254512 PMAQI
7th Sep 2025571 PMAQI
7th Sep 2025572 PMAQI
7th Sep 2025543 PMAQI
7th Sep 2025524 PMAQI
7th Sep 2025465 PMAQI
7th Sep 2025526 PMAQI
7th Sep 2025477 PMAQI
7th Sep 2025498 PMAQI
7th Sep 2025479 PMAQI
7th Sep 20254710 PMAQI
7th Sep 20254511 PMAQI
8th Sep 20254112 AMAQI
8th Sep 2025351 AMAQI
8th Sep 2025342 AMAQI
8th Sep 2025383 AMAQI
8th Sep 2025404 AMAQI
8th Sep 2025395 AMAQI
28°C26/30°C
8th Sep 2025396 AMAQI
8th Sep 2025397 AMAQI
8th Sep 2025428 AMAQI
8th Sep 2025419 AMAQI
8th Sep 20254010 AMAQI
8th Sep 20253811 AMAQI
8th Sep 20253712 PMAQI
8th Sep 2025401 PMAQI
8th Sep 2025432 PMAQI
8th Sep 2025393 PMAQI
8th Sep 2025364 PMAQI
8th Sep 2025355 PMAQI
8th Sep 2025416 PMAQI
8th Sep 2025457 PMAQI
8th Sep 2025498 PMAQI
8th Sep 2025509 PMAQI
8th Sep 20255010 PMAQI
8th Sep 20254811 PMAQI
9th Sep 20254312 AMAQI
9th Sep 2025401 AMAQI
9th Sep 2025382 AMAQI
9th Sep 2025393 AMAQI
9th Sep 2025414 AMAQI
9th Sep 2025405 AMAQI
27°C25/29°C
9th Sep 2025396 AMAQI
9th Sep 2025397 AMAQI
9th Sep 2025308 AMAQI
9th Sep 2025309 AMAQI
9th Sep 20253710 AMAQI
9th Sep 20253511 AMAQI
9th Sep 20253012 PMAQI
9th Sep 2025341 PMAQI
9th Sep 2025292 PMAQI
9th Sep 2025293 PMAQI
9th Sep 2025254 PMAQI
9th Sep 2025275 PMAQI
9th Sep 2025316 PMAQI
9th Sep 2025387 PMAQI
9th Sep 2025368 PMAQI
9th Sep 2025349 PMAQI
9th Sep 20253510 PMAQI
9th Sep 20254311 PMAQI
10th Sep 20254012 AMAQI
10th Sep 2025411 AMAQI
10th Sep 2025412 AMAQI
10th Sep 2025423 AMAQI
10th Sep 2025384 AMAQI
10th Sep 2025385 AMAQI
28°C25/32°C
10th Sep 2025386 AMAQI
10th Sep 2025387 AMAQI
10th Sep 2025258 AMAQI
10th Sep 2025259 AMAQI
10th Sep 20253210 AMAQI
10th Sep 20253411 AMAQI
10th Sep 20253112 PMAQI
10th Sep 2025341 PMAQI
10th Sep 2025362 PMAQI
10th Sep 2025293 PMAQI
10th Sep 2025284 PMAQI
10th Sep 2025265 PMAQI
10th Sep 2025266 PMAQI
10th Sep 2025337 PMAQI
10th Sep 2025378 PMAQI
10th Sep 2025379 PMAQI
10th Sep 20253610 PMAQI
10th Sep 20253411 PMAQI
11th Sep 20253812 AMAQI
11th Sep 2025401 AMAQI
11th Sep 2025402 AMAQI
11th Sep 2025393 AMAQI
11th Sep 2025394 AMAQI
11th Sep 2025385 AMAQI
27°C26/30°C
11th Sep 2025376 AMAQI
11th Sep 2025387 AMAQI
11th Sep 2025258 AMAQI
11th Sep 2025289 AMAQI
11th Sep 20252610 AMAQI
11th Sep 20253411 AMAQI
11th Sep 20252412 PMAQI
11th Sep 2025311 PMAQI
11th Sep 2025312 PMAQI
11th Sep 2025283 PMAQI
11th Sep 2025284 PMAQI
11th Sep 2025275 PMAQI
11th Sep 2025286 PMAQI
11th Sep 2025337 PMAQI
11th Sep 2025328 PMAQI
11th Sep 2025349 PMAQI
11th Sep 20253210 PMAQI
11th Sep 20253211 PMAQI
12th Sep 20253412 AMAQI
12th Sep 2025411 AMAQI
12th Sep 2025402 AMAQI
12th Sep 2025373 AMAQI
12th Sep 2025374 AMAQI
12th Sep 2025375 AMAQI
28°C26/32°C
12th Sep 2025386 AMAQI
12th Sep 2025397 AMAQI
12th Sep 2025318 AMAQI
12th Sep 2025319 AMAQI
12th Sep 20252210 AMAQI
12th Sep 20252911 AMAQI
12th Sep 20252712 PMAQI
12th Sep 2025281 PMAQI
12th Sep 2025262 PMAQI
12th Sep 2025223 PMAQI
12th Sep 2025244 PMAQI
12th Sep 2025275 PMAQI
12th Sep 2025336 PMAQI
12th Sep 2025327 PMAQI
12th Sep 2025368 PMAQI
12th Sep 2025379 PMAQI
12th Sep 20253410 PMAQI
12th Sep 20253411 PMAQI
13th Sep 20253612 AMAQI
13th Sep 2025391 AMAQI
13th Sep 2025372 AMAQI
13th Sep 2025363 AMAQI
13th Sep 2025364 AMAQI
13th Sep 2025355 AMAQI
28°C25/30°C
13th Sep 2025366 AMAQI
13th Sep 2025357 AMAQI
13th Sep 2025318 AMAQI
13th Sep 2025309 AMAQI
13th Sep 20253110 AMAQI
13th Sep 20252911 AMAQI
13th Sep 20252912 PMAQI
13th Sep 2025291 PMAQI
13th Sep 2025282 PMAQI
13th Sep 2025283 PMAQI
13th Sep 2025234 PMAQI
13th Sep 2025225 PMAQI
13th Sep 2025236 PMAQI
13th Sep 2025347 PMAQI
13th Sep 2025368 PMAQI
13th Sep 2025369 PMAQI
13th Sep 20253510 PMAQI
13th Sep 20253311 PMAQI
14th Sep 20253212 AMAQI
14th Sep 2025361 AMAQI
14th Sep 2025372 AMAQI
14th Sep 2025343 AMAQI
14th Sep 2025354 AMAQI
14th Sep 2025345 AMAQI
28°C26/30°C
14th Sep 2025356 AMAQI
14th Sep 2025367 AMAQI
14th Sep 2025288 AMAQI
14th Sep 2025229 AMAQI
14th Sep 20252410 AMAQI
14th Sep 20252711 AMAQI
14th Sep 20252512 PMAQI
14th Sep 2025241 PMAQI
14th Sep 2025292 PMAQI
14th Sep 2025253 PMAQI
14th Sep 2025234 PMAQI
14th Sep 2025245 PMAQI
14th Sep 2025226 PMAQI
14th Sep 2025277 PMAQI
14th Sep 2025318 PMAQI
14th Sep 2025379 PMAQI
14th Sep 20253310 PMAQI
14th Sep 20253211 PMAQI
15th Sep 20253212 AMAQI
15th Sep 2025351 AMAQI
15th Sep 2025362 AMAQI
15th Sep 2025333 AMAQI
15th Sep 2025324 AMAQI
15th Sep 2025335 AMAQI
28°C26/31°C
15th Sep 2025336 AMAQI
15th Sep 2025337 AMAQI
15th Sep 2025348 AMAQI
15th Sep 2025399 AMAQI
15th Sep 20253410 AMAQI
15th Sep 20253311 AMAQI
15th Sep 20252412 PMAQI
15th Sep 2025261 PMAQI
15th Sep 2025262 PMAQI
15th Sep 2025223 PMAQI
15th Sep 2025224 PMAQI
15th Sep 2025205 PMAQI
15th Sep 2025196 PMAQI
15th Sep 2025247 PMAQI
15th Sep 2025308 PMAQI
15th Sep 2025329 PMAQI
15th Sep 20253210 PMAQI
15th Sep 20253011 PMAQI
16th Sep 20253012 AMAQI
16th Sep 2025331 AMAQI
16th Sep 2025352 AMAQI
16th Sep 2025333 AMAQI
16th Sep 2025334 AMAQI
16th Sep 2025335 AMAQI
28°C25/31°C
16th Sep 2025346 AMAQI
16th Sep 2025337 AMAQI
16th Sep 2025268 AMAQI
16th Sep 2025289 AMAQI
16th Sep 20253010 AMAQI
16th Sep 20252911 AMAQI
16th Sep 20252812 PMAQI
16th Sep 2025281 PMAQI
16th Sep 2025252 PMAQI
16th Sep 2025213 PMAQI
16th Sep 2025204 PMAQI
16th Sep 2025235 PMAQI
16th Sep 2025216 PMAQI
16th Sep 2025257 PMAQI
16th Sep 2025298 PMAQI
16th Sep 2025299 PMAQI
16th Sep 20253010 PMAQI
16th Sep 20252711 PMAQI
17th Sep 20252912 AMAQI
17th Sep 2025331 AMAQI
17th Sep 2025332 AMAQI
17th Sep 2025333 AMAQI
17th Sep 2025324 AMAQI
17th Sep 2025325 AMAQI
27°C26/30°C
17th Sep 2025326 AMAQI
17th Sep 2025327 AMAQI
17th Sep 2025238 AMAQI
17th Sep 2025219 AMAQI
17th Sep 20252610 AMAQI
17th Sep 20252311 AMAQI
17th Sep 20252512 PMAQI
17th Sep 2025241 PMAQI
17th Sep 2025242 PMAQI
17th Sep 2025243 PMAQI
17th Sep 2025244 PMAQI
17th Sep 2025295 PMAQI
17th Sep 2025296 PMAQI
17th Sep 2025317 PMAQI
17th Sep 2025318 PMAQI
17th Sep 2025309 PMAQI
17th Sep 20253010 PMAQI
17th Sep 20253011 PMAQI
18th Sep 20253012 AMAQI
18th Sep 2025331 AMAQI
18th Sep 2025332 AMAQI
18th Sep 2025333 AMAQI
18th Sep 2025324 AMAQI
18th Sep 2025325 AMAQI
28°C26/31°C
18th Sep 2025316 AMAQI
18th Sep 2025317 AMAQI
18th Sep 2025278 AMAQI
18th Sep 2025299 AMAQI
18th Sep 20252910 AMAQI
18th Sep 20253211 AMAQI
18th Sep 20253212 PMAQI
18th Sep 2025261 PMAQI
18th Sep 2025302 PMAQI
18th Sep 2025253 PMAQI
18th Sep 2025234 PMAQI
18th Sep 2025235 PMAQI
18th Sep 2025276 PMAQI
18th Sep 2025287 PMAQI
18th Sep 2025338 PMAQI
18th Sep 2025349 PMAQI
18th Sep 20253310 PMAQI
18th Sep 20253111 PMAQI
19th Sep 20253112 AMAQI
19th Sep 2025291 AMAQI
19th Sep 2025322 AMAQI
19th Sep 2025313 AMAQI
19th Sep 2025314 AMAQI
19th Sep 2025315 AMAQI
28°C26/29°C
19th Sep 2025316 AMAQI
19th Sep 2025327 AMAQI
19th Sep 2025298 AMAQI
19th Sep 2025349 AMAQI
19th Sep 20253310 AMAQI
19th Sep 20253011 AMAQI
19th Sep 20253012 PMAQI
19th Sep 2025281 PMAQI
19th Sep 2025262 PMAQI
19th Sep 2025243 PMAQI
19th Sep 2025234 PMAQI
19th Sep 2025205 PMAQI
19th Sep 2025226 PMAQI
19th Sep 2025257 PMAQI
19th Sep 2025288 PMAQI
19th Sep 2025339 PMAQI
19th Sep 20253310 PMAQI
19th Sep 20253611 PMAQI
20th Sep 20254012 AMAQI
20th Sep 2025331 AMAQI
20th Sep 2025322 AMAQI
20th Sep 2025333 AMAQI
20th Sep 2025344 AMAQI
20th Sep 2025345 AMAQI
28°C26/31°C
20th Sep 2025346 AMAQI
20th Sep 2025337 AMAQI
20th Sep 2025338 AMAQI
20th Sep 2025349 AMAQI
20th Sep 20253610 AMAQI
20th Sep 20253311 AMAQI
20th Sep 20253412 PMAQI
20th Sep 2025361 PMAQI
20th Sep 2025372 PMAQI
20th Sep 2025373 PMAQI
20th Sep 2025344 PMAQI
20th Sep 2025355 PMAQI
20th Sep 2025376 PMAQI
20th Sep 2025407 PMAQI
20th Sep 2025398 PMAQI
20th Sep 2025439 PMAQI
20th Sep 20254610 PMAQI
20th Sep 20254911 PMAQI
21st Sep 20254312 AMAQI
21st Sep 2025341 AMAQI
21st Sep 2025352 AMAQI
--°C/°C
6 AM
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
5 PM
29AQI
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 5 PM to 5 PM (Avg. 29).
Night time
Avg. Highest Time
12 AM - 5 AM
38AQI
6 hours / Day
180 hours / Month
Avg. Lowest Time
7 PM
34AQI
1 hours / Day
30 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 12 AM to 5 AM (Avg. 38), while the lowest AQI was between 7 PM to 7 PM (Avg. 34).
2025 Days Vs Air Quality
Haikou, Hainan, China
2025
48%
125
48%
125
5%
12
Total number of days with different AQI categories in last 263 days in 2025 (102 days remaining)
Good
125 DaysModerate
125 DaysPoor
12 DaysUnhealthy
0 DaysSevere
0 DaysHazardous
0 DaysUnder WHO’s Safe Air Quality Limits: 48%
Health Risk Level:
Significant
In 2025, 48% of 263 days were within WHO’s safe air quality limits, and 52% exceeded them. The risk of health issues is Significant, especially for those with existing respiratory or heart conditions.
Annual Air Quality Insights
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.
-1th undefined 2025
-1th undefined 2025
-1th undefined 2025
1st January 2025
115AQI
115AQI
2nd January 2025
104AQI
104AQI
3rd January 2025
106AQI
106AQI
4th January 2025
92AQI
92AQI
5th January 2025
110AQI
110AQI
6th January 2025
118AQI
118AQI
7th January 2025
92AQI
92AQI
8th January 2025
91AQI
91AQI
9th January 2025
118AQI
118AQI
10th January 2025
108AQI
108AQI
11th January 2025
92AQI
92AQI
12th January 2025
81AQI
81AQI
13th January 2025
77AQI
77AQI
14th January 2025
74AQI
74AQI
15th January 2025
81AQI
81AQI
16th January 2025
94AQI
94AQI
17th January 2025
91AQI
91AQI
18th January 2025
86AQI
86AQI
19th January 2025
92AQI
92AQI
20th January 2025
97AQI
97AQI
21st January 2025
81AQI
81AQI
22nd January 2025
92AQI
92AQI
23rd January 2025
82AQI
82AQI
24th January 2025
66AQI
66AQI
25th January 2025
63AQI
63AQI
26th January 2025
59AQI
59AQI
27th January 2025
59AQI
59AQI
28th January 2025
63AQI
63AQI
29th January 2025
79AQI
79AQI
30th January 2025
69AQI
69AQI
31st January 2025
67AQI
67AQI
1st February 2025
55AQI
55AQI
2nd February 2025
49AQI
49AQI
3rd February 2025
64AQI
64AQI
4th February 2025
52AQI
52AQI
5th February 2025
59AQI
59AQI
6th February 2025
60AQI
60AQI
7th February 2025
72AQI
72AQI
8th February 2025
59AQI
59AQI
9th February 2025
68AQI
68AQI
10th February 2025
61AQI
61AQI
11th February 2025
60AQI
60AQI
12th February 2025
53AQI
53AQI
13th February 2025
68AQI
68AQI
14th February 2025
50AQI
50AQI
15th February 2025
70AQI
70AQI
16th February 2025
47AQI
47AQI
17th February 2025
68AQI
68AQI
18th February 2025
77AQI
77AQI
19th February 2025
72AQI
72AQI
20th February 2025
67AQI
67AQI
21st February 2025
63AQI
63AQI
22nd February 2025
49AQI
49AQI
23rd February 2025
63AQI
63AQI
24th February 2025
51AQI
51AQI
25th February 2025
62AQI
62AQI
26th February 2025
75AQI
75AQI
27th February 2025
67AQI
67AQI
28th February 2025
61AQI
61AQI
1st March 2025
58AQI
58AQI
2nd March 2025
57AQI
57AQI
3rd March 2025
63AQI
63AQI
4th March 2025
56AQI
56AQI
5th March 2025
52AQI
52AQI
6th March 2025
34AQI
34AQI
7th March 2025
45AQI
45AQI
8th March 2025
48AQI
48AQI
9th March 2025
62AQI
62AQI
10th March 2025
65AQI
65AQI
11th March 2025
61AQI
61AQI
12th March 2025
55AQI
55AQI
13th March 2025
52AQI
52AQI
14th March 2025
45AQI
45AQI
15th March 2025
58AQI
58AQI
16th March 2025
47AQI
47AQI
17th March 2025
67AQI
67AQI
18th March 2025
69AQI
69AQI
19th March 2025
84AQI
84AQI
20th March 2025
79AQI
79AQI
21st March 2025
83AQI
83AQI
22nd March 2025
77AQI
77AQI
23rd March 2025
73AQI
73AQI
24th March 2025
73AQI
73AQI
25th March 2025
77AQI
77AQI
26th March 2025
73AQI
73AQI
27th March 2025
72AQI
72AQI
28th March 2025
67AQI
67AQI
29th March 2025
53AQI
53AQI
30th March 2025
38AQI
38AQI
31st March 2025
45AQI
45AQI
1st April 2025
50AQI
50AQI
2nd April 2025
67AQI
67AQI
3rd April 2025
58AQI
58AQI
4th April 2025
61AQI
61AQI
5th April 2025
64AQI
64AQI
6th April 2025
60AQI
60AQI
7th April 2025
69AQI
69AQI
8th April 2025
60AQI
60AQI
9th April 2025
65AQI
65AQI
10th April 2025
69AQI
69AQI
11th April 2025
64AQI
64AQI
12th April 2025
68AQI
68AQI
13th April 2025
133AQI
133AQI
14th April 2025
133AQI
133AQI
15th April 2025
135AQI
135AQI
16th April 2025
116AQI
116AQI
17th April 2025
103AQI
103AQI
18th April 2025
84AQI
84AQI
19th April 2025
72AQI
72AQI
20th April 2025
64AQI
64AQI
21st April 2025
62AQI
62AQI
22nd April 2025
65AQI
65AQI
23rd April 2025
60AQI
60AQI
24th April 2025
63AQI
63AQI
25th April 2025
58AQI
58AQI
26th April 2025
52AQI
52AQI
27th April 2025
48AQI
48AQI
28th April 2025
57AQI
57AQI
29th April 2025
59AQI
59AQI
30th April 2025
57AQI
57AQI
1st May 2025
53AQI
53AQI
2nd May 2025
59AQI
59AQI
3rd May 2025
59AQI
59AQI
4th May 2025
59AQI
59AQI
5th May 2025
54AQI
54AQI
6th May 2025
59AQI
59AQI
7th May 2025
59AQI
59AQI
8th May 2025
54AQI
54AQI
9th May 2025
55AQI
55AQI
10th May 2025
50AQI
50AQI
11th May 2025
57AQI
57AQI
12th May 2025
62AQI
62AQI
13th May 2025
57AQI
57AQI
14th May 2025
47AQI
47AQI
15th May 2025
41AQI
41AQI
16th May 2025
38AQI
38AQI
17th May 2025
40AQI
40AQI
18th May 2025
43AQI
43AQI
19th May 2025
43AQI
43AQI
20th May 2025
47AQI
47AQI
21st May 2025
47AQI
47AQI
22nd May 2025
42AQI
42AQI
23rd May 2025
39AQI
39AQI
24th May 2025
37AQI
37AQI
25th May 2025
52AQI
52AQI
26th May 2025
68AQI
68AQI
27th May 2025
56AQI
56AQI
28th May 2025
50AQI
50AQI
29th May 2025
47AQI
47AQI
30th May 2025
46AQI
46AQI
31st May 2025
40AQI
40AQI
1st June 2025
46AQI
46AQI
2nd June 2025
43AQI
43AQI
3rd June 2025
53AQI
53AQI
4th June 2025
54AQI
54AQI
5th June 2025
44AQI
44AQI
6th June 2025
43AQI
43AQI
7th June 2025
47AQI
47AQI
8th June 2025
50AQI
50AQI
9th June 2025
51AQI
51AQI
10th June 2025
51AQI
51AQI
11th June 2025
44AQI
44AQI
12th June 2025
35AQI
35AQI
13th June 2025
34AQI
34AQI
14th June 2025
36AQI
36AQI
15th June 2025
39AQI
39AQI
16th June 2025
42AQI
42AQI
17th June 2025
45AQI
45AQI
18th June 2025
42AQI
42AQI
19th June 2025
40AQI
40AQI
20th June 2025
39AQI
39AQI
21st June 2025
38AQI
38AQI
22nd June 2025
39AQI
39AQI
23rd June 2025
34AQI
34AQI
24th June 2025
32AQI
32AQI
25th June 2025
31AQI
31AQI
26th June 2025
28AQI
28AQI
27th June 2025
28AQI
28AQI
28th June 2025
30AQI
30AQI
29th June 2025
31AQI
31AQI
30th June 2025
31AQI
31AQI
1st July 2025
31AQI
31AQI
2nd July 2025
29AQI
29AQI
3rd July 2025
30AQI
30AQI
4th July 2025
30AQI
30AQI
5th July 2025
34AQI
34AQI
6th July 2025
36AQI
36AQI
7th July 2025
34AQI
34AQI
8th July 2025
40AQI
40AQI
9th July 2025
43AQI
43AQI
10th July 2025
46AQI
46AQI
11th July 2025
49AQI
49AQI
12th July 2025
46AQI
46AQI
13th July 2025
49AQI
49AQI
14th July 2025
50AQI
50AQI
15th July 2025
53AQI
53AQI
16th July 2025
52AQI
52AQI
17th July 2025
50AQI
50AQI
18th July 2025
50AQI
50AQI
19th July 2025
45AQI
45AQI
20th July 2025
40AQI
40AQI
21st July 2025
37AQI
37AQI
22nd July 2025
37AQI
37AQI
23rd July 2025
39AQI
39AQI
24th July 2025
37AQI
37AQI
25th July 2025
40AQI
40AQI
26th July 2025
39AQI
39AQI
27th July 2025
42AQI
42AQI
28th July 2025
37AQI
37AQI
29th July 2025
38AQI
38AQI
30th July 2025
38AQI
38AQI
31st July 2025
46AQI
46AQI
1st August 2025
54AQI
54AQI
2nd August 2025
53AQI
53AQI
3rd August 2025
55AQI
55AQI
4th August 2025
56AQI
56AQI
5th August 2025
55AQI
55AQI
6th August 2025
54AQI
54AQI
7th August 2025
54AQI
54AQI
8th August 2025
52AQI
52AQI
9th August 2025
53AQI
53AQI
10th August 2025
50AQI
50AQI
11th August 2025
47AQI
47AQI
12th August 2025
46AQI
46AQI
13th August 2025
46AQI
46AQI
14th August 2025
44AQI
44AQI
15th August 2025
35AQI
35AQI
16th August 2025
33AQI
33AQI
17th August 2025
32AQI
32AQI
18th August 2025
30AQI
30AQI
19th August 2025
34AQI
34AQI
20th August 2025
37AQI
37AQI
21st August 2025
35AQI
35AQI
22nd August 2025
37AQI
37AQI
23rd August 2025
38AQI
38AQI
24th August 2025
38AQI
38AQI
25th August 2025
34AQI
34AQI
26th August 2025
35AQI
35AQI
27th August 2025
38AQI
38AQI
28th August 2025
41AQI
41AQI
29th August 2025
43AQI
43AQI
30th August 2025
38AQI
38AQI
31st August 2025
37AQI
37AQI
1st September 2025
37AQI
37AQI
2nd September 2025
36AQI
36AQI
3rd September 2025
37AQI
37AQI
4th September 2025
32AQI
32AQI
5th September 2025
34AQI
34AQI
6th September 2025
31AQI
31AQI
7th September 2025
44AQI
44AQI
8th September 2025
41AQI
41AQI
9th September 2025
36AQI
36AQI
10th September 2025
35AQI
35AQI
11th September 2025
33AQI
33AQI
12th September 2025
33AQI
33AQI
13th September 2025
32AQI
32AQI
14th September 2025
30AQI
30AQI
15th September 2025
30AQI
30AQI
16th September 2025
29AQI
29AQI
17th September 2025
29AQI
29AQI
18th September 2025
30AQI
30AQI
19th September 2025
30AQI
30AQI
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
87AQI
62AQI
61AQI
73AQI
50AQI
40AQI
41AQI
43AQI
34AQI
No. of days
Jan.Feb.Mar.Apr.MayJun.Jul.Aug.Sep.Oct.Nov.Dec.Total Days
202555AQI
24
7
4
24
7
24
2
23
5
16
15
26
4
29
2
22
9
19
125
125
12
Highest AQI recorded in
January87AQI
Lowest AQI recorded in
September34AQI
202455AQI
8
22
1
11
16
2
7
24
4
26
22
9
27
3
31
29
2
22
8
9
19
3
1
29
26
5
171
184
11
Highest AQI recorded in
December84AQI
Lowest AQI recorded in
July30AQI
202355AQI
7
21
3
10
16
2
6
25
5
25
18
13
25
5
29
2
22
9
26
4
12
18
1
8
16
2
7
22
2
175
176
10
Highest AQI recorded in
January75AQI
Lowest AQI recorded in
July35AQI
202251AQI
9
20
2
14
7
10
21
10
20
29
2
29
1
24
1
1
9
19
1
12
19
24
6
4
22
5
175
138
8
Highest AQI recorded in
December73AQI
Lowest AQI recorded in
July30AQI
202151AQI
22
9
8
19
1
13
17
1
21
9
27
4
18
12
30
1
30
1
27
3
23
8
11
17
2
1
28
2
209
141
15
Highest AQI recorded in
January88AQI
Lowest AQI recorded in
August34AQI
202050AQI
10
4
9
12
10
8
30
30
1
27
4
25
5
11
19
1
7
18
5
2
18
11
161
89
17
Highest AQI recorded in
December87AQI
Lowest AQI recorded in
June32AQI
Most & Least Polluted Years Over the Last 6 Years
Most Polluted Year Recorded
2024(Avg.)
55AQILeast Polluted Year Recorded
2020(Avg.)
50AQIHaikou's annual 2025 AQI (55) shows an average percentage change of 5.2% (worsened AQI) compared to previous years: 2020 (50), 2021 (51), 2022 (51), 2023 (55), 2024 (55).
