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Water Company Station, 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

Water Company Station, Haikou, Hainan, China

2021
2022
2023
2024
2025
AQI
.
Days

AQI Trends: Highest and Lowest

Highest AQI recorded on
16th Sep 2022
105AQI
Lowest AQI recorded on
8th Sep 2022
8AQI

Same Day Analysis (29th September ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 4th highest AQI at 40 of Good air quality, showing improvement over 2024, 2023 and 2021 on the same day.

Download 2024 Annual Data

World Air Quality Report

Globe

Day & Night AQI Trend: 29th Sep - 30th Sep 2025

Water Company Station, Haikou, Hainan, China

AQI
Day
Night
.

6 AM29th Sep 2025

6 PM

5 AM30th Sep 2025

Day time
Avg. Highest Time
12PM29th Sep

55AQI

Avg. Lowest Time
8AM29th Sep

17AQI

Night time
Avg. Highest Time
10PM29th Sep

55AQI

Avg. Lowest Time
3AM30th Sep

45AQI

In the last 24 hours,

Water Company Station's AQI reached its highest point of 55 at 12 PM during the Day, while the lowest point, 17, was recorded at 8 AM during the Day between 29th Sep and 30th Sep 2025.

Day & Night AQI Trend : Aug - Sep 2025

Water Company Station, Haikou, Hainan, China

AugSep
31st - 01st01st - 02nd02nd - 03rd03rd - 04th04th - 05th05th - 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
Day
Night
31st Aug 2025426 AMAQI
31st Aug 2025427 AMAQI
31st Aug 2025288 AMAQI
31st Aug 2025229 AMAQI
31st Aug 20252610 AMAQI
31st Aug 20252111 AMAQI
31st Aug 20253112 PMAQI
31st Aug 2025291 PMAQI
31st Aug 2025332 PMAQI
31st Aug 2025343 PMAQI
31st Aug 2025304 PMAQI
31st Aug 2025285 PMAQI
31st Aug 2025276 PMAQI
31st Aug 2025367 PMAQI
31st Aug 2025328 PMAQI
31st Aug 2025349 PMAQI
31st Aug 20254010 PMAQI
31st Aug 20254311 PMAQI
1st Sep 20253412 AMAQI
1st Sep 2025401 AMAQI
1st Sep 2025442 AMAQI
1st Sep 2025443 AMAQI
1st Sep 2025404 AMAQI
1st Sep 2025435 AMAQI

26°C24/30°C

1st Sep 2025496 AMAQI
1st Sep 2025487 AMAQI
1st Sep 2025208 AMAQI
1st Sep 2025249 AMAQI
1st Sep 20252310 AMAQI
1st Sep 20252311 AMAQI
1st Sep 20252412 PMAQI
1st Sep 2025331 PMAQI
1st Sep 2025252 PMAQI
1st Sep 2025203 PMAQI
1st Sep 2025244 PMAQI
1st Sep 2025295 PMAQI
1st Sep 2025296 PMAQI
1st Sep 2025317 PMAQI
1st Sep 2025398 PMAQI
1st Sep 2025369 PMAQI
1st Sep 20253910 PMAQI
1st Sep 20254111 PMAQI
2nd Sep 20253812 AMAQI
2nd Sep 2025421 AMAQI
2nd Sep 2025432 AMAQI
2nd Sep 2025433 AMAQI
2nd Sep 2025414 AMAQI
2nd Sep 2025395 AMAQI

26°C24/30°C

2nd Sep 2025426 AMAQI
2nd Sep 2025457 AMAQI
2nd Sep 2025348 AMAQI
2nd Sep 2025449 AMAQI
2nd Sep 20253010 AMAQI
2nd Sep 20251911 AMAQI
2nd Sep 20251712 PMAQI
2nd Sep 2025231 PMAQI
2nd Sep 2025242 PMAQI
2nd Sep 2025193 PMAQI
2nd Sep 2025314 PMAQI
2nd Sep 2025225 PMAQI
2nd Sep 2025246 PMAQI
2nd Sep 2025277 PMAQI
2nd Sep 2025408 PMAQI
2nd Sep 2025399 PMAQI
2nd Sep 20253810 PMAQI
2nd Sep 20253811 PMAQI
3rd Sep 20253912 AMAQI
3rd Sep 2025391 AMAQI
3rd Sep 2025492 AMAQI
3rd Sep 2025443 AMAQI
3rd Sep 2025424 AMAQI
3rd Sep 2025405 AMAQI

27°C24/32°C

3rd Sep 2025406 AMAQI
3rd Sep 2025407 AMAQI
3rd Sep 2025328 AMAQI
3rd Sep 2025369 AMAQI
3rd Sep 20253010 AMAQI
3rd Sep 20253411 AMAQI
3rd Sep 20252612 PMAQI
3rd Sep 2025301 PMAQI
3rd Sep 2025402 PMAQI
3rd Sep 2025323 PMAQI
3rd Sep 2025254 PMAQI
3rd Sep 2025285 PMAQI
3rd Sep 2025276 PMAQI
3rd Sep 2025327 PMAQI
3rd Sep 2025448 PMAQI
3rd Sep 2025499 PMAQI
3rd Sep 20254510 PMAQI
3rd Sep 20254311 PMAQI
4th Sep 20254112 AMAQI
4th Sep 2025441 AMAQI
4th Sep 2025442 AMAQI
4th Sep 2025433 AMAQI
4th Sep 2025414 AMAQI
4th Sep 2025425 AMAQI

27°C24/33°C

4th Sep 2025396 AMAQI
4th Sep 2025407 AMAQI
4th Sep 2025418 AMAQI
4th Sep 2025409 AMAQI
4th Sep 20253010 AMAQI
4th Sep 20254911 AMAQI
4th Sep 20253412 PMAQI
4th Sep 2025301 PMAQI
4th Sep 2025262 PMAQI
4th Sep 2025243 PMAQI
4th Sep 2025224 PMAQI
4th Sep 2025215 PMAQI
4th Sep 2025216 PMAQI
4th Sep 2025197 PMAQI
4th Sep 2025178 PMAQI
4th Sep 2025179 PMAQI
4th Sep 20252210 PMAQI
4th Sep 20252311 PMAQI
5th Sep 20253412 AMAQI
5th Sep 2025381 AMAQI
5th Sep 2025362 AMAQI
5th Sep 2025383 AMAQI
5th Sep 2025384 AMAQI
5th Sep 2025435 AMAQI

27°C24/31°C

5th Sep 2025396 AMAQI
5th Sep 2025407 AMAQI
5th Sep 2025438 AMAQI
5th Sep 2025529 AMAQI
5th Sep 20253210 AMAQI
5th Sep 20252911 AMAQI
5th Sep 20252812 PMAQI
5th Sep 2025311 PMAQI
5th Sep 2025342 PMAQI
5th Sep 2025273 PMAQI
5th Sep 2025274 PMAQI
5th Sep 2025295 PMAQI
5th Sep 2025326 PMAQI
5th Sep 2025317 PMAQI
5th Sep 2025338 PMAQI
5th Sep 2025379 PMAQI
5th Sep 20253610 PMAQI
5th Sep 20253711 PMAQI
6th Sep 20253012 AMAQI
6th Sep 2025371 AMAQI
6th Sep 2025342 AMAQI
6th Sep 2025363 AMAQI
6th Sep 2025384 AMAQI
6th Sep 2025385 AMAQI

27°C24/31°C

6th Sep 2025376 AMAQI
6th Sep 2025357 AMAQI
6th Sep 2025278 AMAQI
6th Sep 2025369 AMAQI
6th Sep 20252810 AMAQI
6th Sep 20252911 AMAQI
6th Sep 20252812 PMAQI
6th Sep 2025321 PMAQI
6th Sep 2025212 PMAQI
6th Sep 2025253 PMAQI
6th Sep 2025244 PMAQI
6th Sep 2025225 PMAQI
6th Sep 2025246 PMAQI
6th Sep 2025267 PMAQI
6th Sep 2025288 PMAQI
6th Sep 2025419 PMAQI
6th Sep 20253510 PMAQI
6th Sep 20254011 PMAQI
7th Sep 20254212 AMAQI
7th Sep 2025361 AMAQI
7th Sep 2025352 AMAQI
7th Sep 2025403 AMAQI
7th Sep 2025344 AMAQI
7th Sep 2025345 AMAQI

27°C24/33°C

7th Sep 2025366 AMAQI
7th Sep 2025377 AMAQI
7th Sep 2025468 AMAQI
7th Sep 2025469 AMAQI
7th Sep 20254610 AMAQI
7th Sep 20254911 AMAQI
7th Sep 20254212 PMAQI
7th Sep 2025561 PMAQI
7th Sep 2025572 PMAQI
7th Sep 2025543 PMAQI
7th Sep 2025504 PMAQI
7th Sep 2025475 PMAQI
7th Sep 2025566 PMAQI
7th Sep 2025527 PMAQI
7th Sep 2025518 PMAQI
7th Sep 2025509 PMAQI
7th Sep 20255110 PMAQI
7th Sep 20254611 PMAQI
8th Sep 20254212 AMAQI
8th Sep 2025361 AMAQI
8th Sep 2025362 AMAQI
8th Sep 2025393 AMAQI
8th Sep 2025404 AMAQI
8th Sep 2025405 AMAQI

27°C24/30°C

8th Sep 2025396 AMAQI
8th Sep 2025397 AMAQI
8th Sep 2025448 AMAQI
8th Sep 2025389 AMAQI
8th Sep 20253710 AMAQI
8th Sep 20253611 AMAQI
8th Sep 20253012 PMAQI
8th Sep 2025351 PMAQI
8th Sep 2025382 PMAQI
8th Sep 2025333 PMAQI
8th Sep 2025344 PMAQI
8th Sep 2025325 PMAQI
8th Sep 2025406 PMAQI
8th Sep 2025437 PMAQI
8th Sep 2025508 PMAQI
8th Sep 2025519 PMAQI
8th Sep 20255410 PMAQI
8th Sep 20254811 PMAQI
9th Sep 20254212 AMAQI
9th Sep 2025401 AMAQI
9th Sep 2025402 AMAQI
9th Sep 2025403 AMAQI
9th Sep 2025434 AMAQI
9th Sep 2025405 AMAQI

26°C24/30°C

9th Sep 2025396 AMAQI
9th Sep 2025407 AMAQI
9th Sep 2025288 AMAQI
9th Sep 2025309 AMAQI
9th Sep 20253410 AMAQI
9th Sep 20253411 AMAQI
9th Sep 20253012 PMAQI
9th Sep 2025321 PMAQI
9th Sep 2025292 PMAQI
9th Sep 2025303 PMAQI
9th Sep 2025244 PMAQI
9th Sep 2025265 PMAQI
9th Sep 2025306 PMAQI
9th Sep 2025377 PMAQI
9th Sep 2025368 PMAQI
9th Sep 2025349 PMAQI
9th Sep 20253310 PMAQI
9th Sep 20253511 PMAQI
10th Sep 20253912 AMAQI
10th Sep 2025401 AMAQI
10th Sep 2025422 AMAQI
10th Sep 2025423 AMAQI
10th Sep 2025384 AMAQI
10th Sep 2025385 AMAQI

27°C24/33°C

10th Sep 2025386 AMAQI
10th Sep 2025387 AMAQI
10th Sep 2025228 AMAQI
10th Sep 2025249 AMAQI
10th Sep 20252810 AMAQI
10th Sep 20253011 AMAQI
10th Sep 20252712 PMAQI
10th Sep 2025301 PMAQI
10th Sep 2025322 PMAQI
10th Sep 2025293 PMAQI
10th Sep 2025254 PMAQI
10th Sep 2025245 PMAQI
10th Sep 2025236 PMAQI
10th Sep 2025327 PMAQI
10th Sep 2025368 PMAQI
10th Sep 2025349 PMAQI
10th Sep 20253610 PMAQI
10th Sep 20253511 PMAQI
11th Sep 20253812 AMAQI
11th Sep 2025401 AMAQI
11th Sep 2025392 AMAQI
11th Sep 2025393 AMAQI
11th Sep 2025384 AMAQI
11th Sep 2025375 AMAQI

26°C24/29°C

11th Sep 2025376 AMAQI
11th Sep 2025377 AMAQI
11th Sep 2025208 AMAQI
11th Sep 2025309 AMAQI
11th Sep 20252610 AMAQI
11th Sep 20253111 AMAQI
11th Sep 20252312 PMAQI
11th Sep 2025241 PMAQI
11th Sep 2025362 PMAQI
11th Sep 2025243 PMAQI
11th Sep 2025294 PMAQI
11th Sep 2025285 PMAQI
11th Sep 2025286 PMAQI
11th Sep 2025307 PMAQI
11th Sep 2025308 PMAQI
11th Sep 2025329 PMAQI
11th Sep 20253110 PMAQI
11th Sep 20253011 PMAQI
12th Sep 20253412 AMAQI
12th Sep 2025401 AMAQI
12th Sep 2025382 AMAQI
12th Sep 2025363 AMAQI
12th Sep 2025354 AMAQI
12th Sep 2025365 AMAQI

27°C23/33°C

12th Sep 2025386 AMAQI
12th Sep 2025397 AMAQI
12th Sep 2025368 AMAQI
12th Sep 2025369 AMAQI
12th Sep 20252510 AMAQI
12th Sep 20253011 AMAQI
12th Sep 20252612 PMAQI
12th Sep 2025271 PMAQI
12th Sep 2025232 PMAQI
12th Sep 2025233 PMAQI
12th Sep 2025254 PMAQI
12th Sep 2025255 PMAQI
12th Sep 2025336 PMAQI
12th Sep 2025357 PMAQI
12th Sep 2025398 PMAQI
12th Sep 2025399 PMAQI
12th Sep 20253210 PMAQI
12th Sep 20253511 PMAQI
13th Sep 20253612 AMAQI
13th Sep 2025401 AMAQI
13th Sep 2025372 AMAQI
13th Sep 2025363 AMAQI
13th Sep 2025354 AMAQI
13th Sep 2025355 AMAQI

27°C23/32°C

13th Sep 2025346 AMAQI
13th Sep 2025347 AMAQI
13th Sep 2025388 AMAQI
13th Sep 2025389 AMAQI
13th Sep 20253210 AMAQI
13th Sep 20252911 AMAQI
13th Sep 20253412 PMAQI
13th Sep 2025291 PMAQI
13th Sep 2025272 PMAQI
13th Sep 2025263 PMAQI
13th Sep 2025254 PMAQI
13th Sep 2025205 PMAQI
13th Sep 2025226 PMAQI
13th Sep 2025367 PMAQI
13th Sep 2025408 PMAQI
13th Sep 2025379 PMAQI
13th Sep 20253610 PMAQI
13th Sep 20253311 PMAQI
14th Sep 20253212 AMAQI
14th Sep 2025361 AMAQI
14th Sep 2025362 AMAQI
14th Sep 2025343 AMAQI
14th Sep 2025354 AMAQI
14th Sep 2025345 AMAQI

26°C24/30°C

14th Sep 2025356 AMAQI
14th Sep 2025367 AMAQI
14th Sep 2025318 AMAQI
14th Sep 2025229 AMAQI
14th Sep 20252410 AMAQI
14th Sep 20252711 AMAQI
14th Sep 20252312 PMAQI
14th Sep 2025221 PMAQI
14th Sep 2025262 PMAQI
14th Sep 2025243 PMAQI
14th Sep 2025234 PMAQI
14th Sep 2025255 PMAQI
14th Sep 2025186 PMAQI
14th Sep 2025247 PMAQI
14th Sep 2025318 PMAQI
14th Sep 2025379 PMAQI
14th Sep 20253010 PMAQI
14th Sep 20253011 PMAQI
15th Sep 20252912 AMAQI
15th Sep 2025351 AMAQI
15th Sep 2025352 AMAQI
15th Sep 2025323 AMAQI
15th Sep 2025324 AMAQI
15th Sep 2025345 AMAQI

27°C24/32°C

15th Sep 2025346 AMAQI
15th Sep 2025327 AMAQI
15th Sep 2025308 AMAQI
15th Sep 2025409 AMAQI
15th Sep 20253110 AMAQI
15th Sep 20253111 AMAQI
15th Sep 20251912 PMAQI
15th Sep 2025251 PMAQI
15th Sep 2025232 PMAQI
15th Sep 2025233 PMAQI
15th Sep 2025204 PMAQI
15th Sep 2025185 PMAQI
15th Sep 2025196 PMAQI
15th Sep 2025217 PMAQI
15th Sep 2025298 PMAQI
15th Sep 2025329 PMAQI
15th Sep 20253210 PMAQI
15th Sep 20252911 PMAQI
16th Sep 20253112 AMAQI
16th Sep 2025321 AMAQI
16th Sep 2025342 AMAQI
16th Sep 2025323 AMAQI
16th Sep 2025324 AMAQI
16th Sep 2025325 AMAQI

26°C23/32°C

16th Sep 2025326 AMAQI
16th Sep 2025327 AMAQI
16th Sep 2025298 AMAQI
16th Sep 2025279 AMAQI
16th Sep 20252910 AMAQI
16th Sep 20252711 AMAQI
16th Sep 20252312 PMAQI
16th Sep 2025271 PMAQI
16th Sep 2025242 PMAQI
16th Sep 2025183 PMAQI
16th Sep 2025194 PMAQI
16th Sep 2025175 PMAQI
16th Sep 2025176 PMAQI
16th Sep 2025227 PMAQI
16th Sep 2025268 PMAQI
16th Sep 2025289 PMAQI
16th Sep 20253210 PMAQI
16th Sep 20252711 PMAQI
17th Sep 20252812 AMAQI
17th Sep 2025321 AMAQI
17th Sep 2025332 AMAQI
17th Sep 2025323 AMAQI
17th Sep 2025324 AMAQI
17th Sep 2025325 AMAQI

26°C24/30°C

17th Sep 2025326 AMAQI
17th Sep 2025327 AMAQI
17th Sep 2025248 AMAQI
17th Sep 2025249 AMAQI
17th Sep 20252610 AMAQI
17th Sep 20252211 AMAQI
17th Sep 20252412 PMAQI
17th Sep 2025191 PMAQI
17th Sep 2025242 PMAQI
17th Sep 2025263 PMAQI
17th Sep 2025204 PMAQI
17th Sep 2025255 PMAQI
17th Sep 2025236 PMAQI
17th Sep 2025287 PMAQI
17th Sep 2025288 PMAQI
17th Sep 2025269 PMAQI
17th Sep 20252710 PMAQI
17th Sep 20252711 PMAQI
18th Sep 20252812 AMAQI
18th Sep 2025321 AMAQI
18th Sep 2025332 AMAQI
18th Sep 2025323 AMAQI
18th Sep 2025314 AMAQI
18th Sep 2025315 AMAQI

26°C24/30°C

18th Sep 2025316 AMAQI
18th Sep 2025317 AMAQI
18th Sep 2025278 AMAQI
18th Sep 2025339 AMAQI
18th Sep 20253810 AMAQI
18th Sep 20253811 AMAQI
18th Sep 20253412 PMAQI
18th Sep 2025221 PMAQI
18th Sep 2025222 PMAQI
18th Sep 2025263 PMAQI
18th Sep 2025214 PMAQI
18th Sep 2025225 PMAQI
18th Sep 2025246 PMAQI
18th Sep 2025267 PMAQI
18th Sep 2025348 PMAQI
18th Sep 2025329 PMAQI
18th Sep 20253210 PMAQI
18th Sep 20252811 PMAQI
19th Sep 20252812 AMAQI
19th Sep 2025261 AMAQI
19th Sep 2025322 AMAQI
19th Sep 2025323 AMAQI
19th Sep 2025324 AMAQI
19th Sep 2025325 AMAQI

26°C24/29°C

19th Sep 2025316 AMAQI
19th Sep 2025317 AMAQI
19th Sep 2025228 AMAQI
19th Sep 2025209 AMAQI
19th Sep 20251810 AMAQI
19th Sep 20251811 AMAQI
19th Sep 20252612 PMAQI
19th Sep 2025281 PMAQI
19th Sep 2025262 PMAQI
19th Sep 2025243 PMAQI
19th Sep 2025234 PMAQI
19th Sep 2025185 PMAQI
19th Sep 2025186 PMAQI
19th Sep 2025257 PMAQI
19th Sep 2025268 PMAQI
19th Sep 2025279 PMAQI
19th Sep 20252710 PMAQI
19th Sep 20253211 PMAQI
20th Sep 20253512 AMAQI
20th Sep 2025321 AMAQI
20th Sep 2025322 AMAQI
20th Sep 2025333 AMAQI
20th Sep 2025324 AMAQI
20th Sep 2025335 AMAQI

27°C24/32°C

20th Sep 2025326 AMAQI
20th Sep 2025327 AMAQI
20th Sep 2025378 AMAQI
20th Sep 2025389 AMAQI
20th Sep 20253810 AMAQI
20th Sep 20253611 AMAQI
20th Sep 20253812 PMAQI
20th Sep 2025381 PMAQI
20th Sep 2025332 PMAQI
20th Sep 2025313 PMAQI
20th Sep 2025304 PMAQI
20th Sep 2025315 PMAQI
20th Sep 2025336 PMAQI
20th Sep 2025387 PMAQI
20th Sep 2025348 PMAQI
20th Sep 2025369 PMAQI
20th Sep 20253910 PMAQI
20th Sep 20254011 PMAQI
21st Sep 20253612 AMAQI
21st Sep 2025321 AMAQI
21st Sep 2025332 AMAQI
21st Sep 2025343 AMAQI
21st Sep 2025354 AMAQI
21st Sep 2025355 AMAQI

27°C24/32°C

21st Sep 2025356 AMAQI
21st Sep 2025347 AMAQI
21st Sep 2025408 AMAQI
21st Sep 2025489 AMAQI
21st Sep 20254610 AMAQI
21st Sep 20254311 AMAQI
21st Sep 20254212 PMAQI
21st Sep 2025501 PMAQI
21st Sep 2025512 PMAQI
21st Sep 2025523 PMAQI
21st Sep 2025524 PMAQI
21st Sep 2025495 PMAQI
21st Sep 2025446 PMAQI
21st Sep 2025407 PMAQI
21st Sep 2025408 PMAQI
21st Sep 2025429 PMAQI
21st Sep 20253910 PMAQI
21st Sep 20253711 PMAQI
22nd Sep 20253512 AMAQI
22nd Sep 2025341 AMAQI
22nd Sep 2025342 AMAQI
22nd Sep 2025353 AMAQI
22nd Sep 2025364 AMAQI
22nd Sep 2025365 AMAQI

27°C24/31°C

22nd Sep 2025366 AMAQI
22nd Sep 2025367 AMAQI
22nd Sep 2025278 AMAQI
22nd Sep 2025289 AMAQI
22nd Sep 20252610 AMAQI
22nd Sep 20252411 AMAQI
22nd Sep 20252312 PMAQI
22nd Sep 2025231 PMAQI
22nd Sep 2025262 PMAQI
22nd Sep 2025263 PMAQI
22nd Sep 2025244 PMAQI
22nd Sep 2025245 PMAQI
22nd Sep 2025226 PMAQI
22nd Sep 2025257 PMAQI
22nd Sep 2025328 PMAQI
22nd Sep 2025329 PMAQI
22nd Sep 20252810 PMAQI
22nd Sep 20252911 PMAQI
23rd Sep 20252812 AMAQI
23rd Sep 2025351 AMAQI
23rd Sep 2025362 AMAQI
23rd Sep 2025353 AMAQI
23rd Sep 2025334 AMAQI
23rd Sep 2025335 AMAQI

26°C24/30°C

23rd Sep 2025326 AMAQI
23rd Sep 2025337 AMAQI
23rd Sep 2025288 AMAQI
23rd Sep 2025299 AMAQI
23rd Sep 20253210 AMAQI
23rd Sep 20252711 AMAQI
23rd Sep 20253612 PMAQI
23rd Sep 2025501 PMAQI
23rd Sep 2025492 PMAQI
23rd Sep 2025453 PMAQI
23rd Sep 2025424 PMAQI
23rd Sep 2025405 PMAQI
23rd Sep 2025446 PMAQI
23rd Sep 2025447 PMAQI
23rd Sep 2025418 PMAQI
23rd Sep 2025429 PMAQI
23rd Sep 20254210 PMAQI
23rd Sep 20254611 PMAQI
24th Sep 20255112 AMAQI
24th Sep 2025391 AMAQI
24th Sep 2025322 AMAQI
24th Sep 2025343 AMAQI
24th Sep 2025354 AMAQI
24th Sep 2025345 AMAQI

27°C24/31°C

24th Sep 2025356 AMAQI
24th Sep 2025347 AMAQI
24th Sep 2025498 AMAQI
24th Sep 2025549 AMAQI
24th Sep 20255210 AMAQI
24th Sep 20255111 AMAQI
24th Sep 20255212 PMAQI
24th Sep 2025511 PMAQI
24th Sep 2025492 PMAQI
24th Sep 2025463 PMAQI
24th Sep 2025454 PMAQI
24th Sep 2025395 PMAQI
24th Sep 2025286 PMAQI
24th Sep 2025297 PMAQI
24th Sep 2025288 PMAQI
24th Sep 2025309 PMAQI
24th Sep 20253010 PMAQI
24th Sep 20252911 PMAQI
25th Sep 20252812 AMAQI
25th Sep 2025341 AMAQI
25th Sep 2025382 AMAQI
25th Sep 2025403 AMAQI
25th Sep 2025424 AMAQI
25th Sep 2025435 AMAQI

26°C24/29°C

25th Sep 2025436 AMAQI
25th Sep 2025427 AMAQI
25th Sep 2025208 AMAQI
25th Sep 2025139 AMAQI
25th Sep 20251210 AMAQI
25th Sep 20251411 AMAQI
25th Sep 20252412 PMAQI
25th Sep 2025211 PMAQI
25th Sep 2025182 PMAQI
25th Sep 2025183 PMAQI
25th Sep 2025194 PMAQI
25th Sep 2025185 PMAQI
25th Sep 2025406 PMAQI
25th Sep 2025577 PMAQI
25th Sep 2025608 PMAQI
25th Sep 2025589 PMAQI
25th Sep 20255810 PMAQI
25th Sep 20255411 PMAQI
26th Sep 20254612 AMAQI
26th Sep 2025381 AMAQI
26th Sep 2025352 AMAQI
26th Sep 2025313 AMAQI
26th Sep 2025274 AMAQI
26th Sep 2025235 AMAQI

27°C24/32°C

26th Sep 2025226 AMAQI
26th Sep 2025227 AMAQI
26th Sep 2025208 AMAQI
26th Sep 2025189 AMAQI
26th Sep 20252210 AMAQI
26th Sep 20252011 AMAQI
26th Sep 20252012 PMAQI
26th Sep 2025201 PMAQI
26th Sep 2025202 PMAQI
26th Sep 2025203 PMAQI
26th Sep 2025194 PMAQI
26th Sep 2025195 PMAQI
26th Sep 2025216 PMAQI
26th Sep 2025227 PMAQI
26th Sep 2025288 PMAQI
26th Sep 2025239 PMAQI
26th Sep 20252810 PMAQI
26th Sep 20252811 PMAQI
27th Sep 20252812 AMAQI
27th Sep 2025281 AMAQI
27th Sep 2025282 AMAQI
27th Sep 2025283 AMAQI
27th Sep 2025284 AMAQI
27th Sep 2025285 AMAQI

26°C24/28°C

27th Sep 2025286 AMAQI
27th Sep 2025287 AMAQI
27th Sep 2025288 AMAQI
27th Sep 2025289 AMAQI
27th Sep 20252810 AMAQI
27th Sep 20254511 AMAQI
27th Sep 20255412 PMAQI
27th Sep 2025531 PMAQI
27th Sep 2025522 PMAQI
27th Sep 2025443 PMAQI
27th Sep 2025444 PMAQI
27th Sep 2025445 PMAQI
27th Sep 2025446 PMAQI
27th Sep 2025447 PMAQI
27th Sep 2025448 PMAQI
27th Sep 2025449 PMAQI
27th Sep 20254410 PMAQI
27th Sep 20254411 PMAQI
28th Sep 20254412 AMAQI
28th Sep 2025441 AMAQI
28th Sep 2025412 AMAQI
28th Sep 2025413 AMAQI
28th Sep 2025284 AMAQI
28th Sep 2025195 AMAQI

26°C24/29°C

28th Sep 2025176 AMAQI
28th Sep 2025157 AMAQI
28th Sep 2025128 AMAQI
28th Sep 2025119 AMAQI
28th Sep 20251410 AMAQI
28th Sep 20252711 AMAQI
28th Sep 20253712 PMAQI
28th Sep 2025311 PMAQI
28th Sep 2025172 PMAQI
28th Sep 2025133 PMAQI
28th Sep 2025114 PMAQI
28th Sep 2025165 PMAQI
28th Sep 2025186 PMAQI
28th Sep 2025187 PMAQI
28th Sep 2025348 PMAQI
28th Sep 2025399 PMAQI
28th Sep 20253510 PMAQI
28th Sep 20253211 PMAQI
29th Sep 20253912 AMAQI
29th Sep 2025411 AMAQI
29th Sep 2025442 AMAQI
29th Sep 2025443 AMAQI
29th Sep 2025444 AMAQI
29th Sep 2025375 AMAQI

25°C25/25°C

29th Sep 2025306 AMAQI
29th Sep 2025217 AMAQI
29th Sep 2025178 AMAQI
29th Sep 2025309 AMAQI
29th Sep 20254210 AMAQI
29th Sep 20255111 AMAQI
29th Sep 20255512 PMAQI
29th Sep 2025541 PMAQI
29th Sep 2025532 PMAQI
29th Sep 2025513 PMAQI
29th Sep 2025464 PMAQI
29th Sep 2025485 PMAQI
29th Sep 2025506 PMAQI
29th Sep 2025527 PMAQI
29th Sep 2025488 PMAQI
29th Sep 2025529 PMAQI
29th Sep 20255510 PMAQI
29th Sep 20255211 PMAQI
30th Sep 20254812 AMAQI
30th Sep 2025491 AMAQI
30th Sep 2025552 AMAQI
30th Sep 2025453 AMAQI
30th Sep 2025474 AMAQI
30th Sep 2025475 AMAQI

26°C25/27°C

30th Sep 2025406 AMAQI
6 AM
30th Sep 2025457 AMAQI
30th Sep 2025468 AMAQI
30th Sep 2025429 AMAQI
30th Sep 20254710 AMAQI
30th Sep 20254611 AMAQI
30th Sep 20254812 PMAQI
12 PM
30th Sep 2025411 PMAQI
30th Sep 2025362 PMAQI
30th Sep 2025253 PMAQI
30th Sep 2025184 PMAQI
30th Sep 2025135 PMAQI
30th Sep 2025156 PMAQI
6 PM
30th Sep 2025187 PMAQI
30th Sep 2025178 PMAQI
30th Sep 2025289 PMAQI
12 AM
5 AM

--°C/°C

Day time
Avg. Highest Time
6 AM - 7 AM

35AQI

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

27AQI

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. 35), while the lowest AQI was between 5 PM to 5 PM (Avg. 27).
Night time
Avg. Highest Time
12 AM - 5 AM

37AQI

6 hours / Day
180 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 12 AM to 5 AM (Avg. 37), while the lowest AQI was between 7 PM to 7 PM (Avg. 32).

2025 Days Vs Air Quality

Water Company Station, Haikou, Hainan, China

2025

53%

143

44%

119

4%

10

Total number of days with different AQI categories in last 273 days in 2025 (92 days remaining)

Good
143 Days
Moderate
119 Days
Poor
10 Days
Unhealthy
0 Days
Severe
0 Days
Hazardous
0 Days

Under WHO’s Safe Air Quality Limits: 53%

Health Risk Level:

Considerable

In 2025, 53% of 273 days were within WHO’s safe air quality limits, and 47% exceeded them. The risk of health issues is Considerable, with potential for conditions in sensitive individuals.

Annual Air Quality Insights

Water Company Station, 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
117AQI
2nd January 2025
101AQI
3rd January 2025
107AQI
4th January 2025
91AQI
5th January 2025
108AQI
6th January 2025
116AQI
7th January 2025
92AQI
8th January 2025
91AQI
9th January 2025
115AQI
10th January 2025
109AQI
11th January 2025
93AQI
12th January 2025
83AQI
13th January 2025
78AQI
14th January 2025
73AQI
15th January 2025
87AQI
16th January 2025
97AQI
17th January 2025
90AQI
18th January 2025
86AQI
19th January 2025
93AQI
20th January 2025
96AQI
21st January 2025
85AQI
22nd January 2025
95AQI
23rd January 2025
82AQI
24th January 2025
63AQI
25th January 2025
62AQI
26th January 2025
60AQI
27th January 2025
60AQI
28th January 2025
66AQI
29th January 2025
91AQI
30th January 2025
70AQI
31st January 2025
64AQI
1st February 2025
55AQI
2nd February 2025
49AQI
3rd February 2025
61AQI
4th February 2025
53AQI
5th February 2025
58AQI
6th February 2025
59AQI
7th February 2025
73AQI
8th February 2025
60AQI
9th February 2025
69AQI
10th February 2025
60AQI
11th February 2025
58AQI
12th February 2025
52AQI
13th February 2025
64AQI
14th February 2025
48AQI
15th February 2025
67AQI
16th February 2025
45AQI
17th February 2025
66AQI
18th February 2025
78AQI
19th February 2025
71AQI
20th February 2025
67AQI
21st February 2025
61AQI
22nd February 2025
46AQI
23rd February 2025
55AQI
24th February 2025
51AQI
25th February 2025
57AQI
26th February 2025
69AQI
27th February 2025
64AQI
28th February 2025
57AQI
1st March 2025
56AQI
2nd March 2025
55AQI
3rd March 2025
59AQI
4th March 2025
50AQI
5th March 2025
49AQI
6th March 2025
31AQI
7th March 2025
42AQI
8th March 2025
42AQI
9th March 2025
61AQI
10th March 2025
61AQI
11th March 2025
59AQI
12th March 2025
48AQI
13th March 2025
46AQI
14th March 2025
39AQI
15th March 2025
53AQI
16th March 2025
46AQI
17th March 2025
67AQI
18th March 2025
71AQI
19th March 2025
86AQI
20th March 2025
78AQI
21st March 2025
85AQI
22nd March 2025
77AQI
23rd March 2025
75AQI
24th March 2025
74AQI
25th March 2025
79AQI
26th March 2025
70AQI
27th March 2025
68AQI
28th March 2025
61AQI
29th March 2025
50AQI
30th March 2025
37AQI
31st March 2025
35AQI
1st April 2025
38AQI
2nd April 2025
63AQI
3rd April 2025
58AQI
4th April 2025
58AQI
5th April 2025
63AQI
6th April 2025
47AQI
7th April 2025
64AQI
8th April 2025
56AQI
9th April 2025
62AQI
10th April 2025
62AQI
11th April 2025
61AQI
12th April 2025
63AQI
13th April 2025
131AQI
14th April 2025
132AQI
15th April 2025
123AQI
16th April 2025
100AQI
17th April 2025
91AQI
18th April 2025
76AQI
19th April 2025
62AQI
20th April 2025
61AQI
21st April 2025
57AQI
22nd April 2025
63AQI
23rd April 2025
54AQI
24th April 2025
60AQI
25th April 2025
53AQI
26th April 2025
53AQI
27th April 2025
48AQI
28th April 2025
54AQI
29th April 2025
56AQI
30th April 2025
53AQI
1st May 2025
52AQI
2nd May 2025
57AQI
3rd May 2025
59AQI
4th May 2025
59AQI
5th May 2025
52AQI
6th May 2025
58AQI
7th May 2025
57AQI
8th May 2025
54AQI
9th May 2025
53AQI
10th May 2025
48AQI
11th May 2025
54AQI
12th May 2025
61AQI
13th May 2025
56AQI
14th May 2025
46AQI
15th May 2025
36AQI
16th May 2025
36AQI
17th May 2025
37AQI
18th May 2025
39AQI
19th May 2025
39AQI
20th May 2025
42AQI
21st May 2025
47AQI
22nd May 2025
38AQI
23rd May 2025
36AQI
24th May 2025
35AQI
25th May 2025
47AQI
26th May 2025
68AQI
27th May 2025
54AQI
28th May 2025
50AQI
29th May 2025
48AQI
30th May 2025
48AQI
31st May 2025
39AQI
1st June 2025
45AQI
2nd June 2025
43AQI
3rd June 2025
51AQI
4th June 2025
54AQI
5th June 2025
45AQI
6th June 2025
41AQI
7th June 2025
48AQI
8th June 2025
51AQI
9th June 2025
54AQI
10th June 2025
54AQI
11th June 2025
44AQI
12th June 2025
30AQI
13th June 2025
32AQI
14th June 2025
33AQI
15th June 2025
36AQI
16th June 2025
40AQI
17th June 2025
43AQI
18th June 2025
38AQI
19th June 2025
38AQI
20th June 2025
35AQI
21st June 2025
34AQI
22nd June 2025
38AQI
23rd June 2025
35AQI
24th June 2025
31AQI
25th June 2025
32AQI
26th June 2025
29AQI
27th June 2025
28AQI
28th June 2025
28AQI
29th June 2025
29AQI
30th June 2025
28AQI
1st July 2025
30AQI
2nd July 2025
27AQI
3rd July 2025
27AQI
4th July 2025
29AQI
5th July 2025
31AQI
6th July 2025
35AQI
7th July 2025
34AQI
8th July 2025
39AQI
9th July 2025
40AQI
10th July 2025
45AQI
11th July 2025
48AQI
12th July 2025
46AQI
13th July 2025
48AQI
14th July 2025
47AQI
15th July 2025
51AQI
16th July 2025
50AQI
17th July 2025
49AQI
18th July 2025
50AQI
19th July 2025
43AQI
20th July 2025
37AQI
21st July 2025
34AQI
22nd July 2025
35AQI
23rd July 2025
34AQI
24th July 2025
36AQI
25th July 2025
40AQI
26th July 2025
39AQI
27th July 2025
40AQI
28th July 2025
36AQI
29th July 2025
37AQI
30th July 2025
38AQI
31st July 2025
47AQI
1st August 2025
54AQI
2nd August 2025
52AQI
3rd August 2025
54AQI
4th August 2025
56AQI
5th August 2025
55AQI
6th August 2025
55AQI
7th August 2025
53AQI
8th August 2025
51AQI
9th August 2025
50AQI
10th August 2025
47AQI
11th August 2025
45AQI
12th August 2025
46AQI
13th August 2025
45AQI
14th August 2025
41AQI
15th August 2025
35AQI
16th August 2025
32AQI
17th August 2025
31AQI
18th August 2025
29AQI
19th August 2025
33AQI
20th August 2025
37AQI
21st August 2025
35AQI
22nd August 2025
36AQI
23rd August 2025
38AQI
24th August 2025
36AQI
25th August 2025
34AQI
26th August 2025
34AQI
27th August 2025
37AQI
28th August 2025
40AQI
29th August 2025
41AQI
30th August 2025
36AQI
31st August 2025
36AQI
1st September 2025
35AQI
2nd September 2025
34AQI
3rd September 2025
38AQI
4th September 2025
30AQI
5th September 2025
35AQI
6th September 2025
32AQI
7th September 2025
45AQI
8th September 2025
40AQI
9th September 2025
35AQI
10th September 2025
33AQI
11th September 2025
32AQI
12th September 2025
33AQI
13th September 2025
33AQI
14th September 2025
29AQI
15th September 2025
29AQI
16th September 2025
27AQI
17th September 2025
27AQI
18th September 2025
30AQI
19th September 2025
26AQI
20th September 2025
35AQI
21st September 2025
40AQI
22nd September 2025
30AQI
23rd September 2025
38AQI
24th September 2025
38AQI
25th September 2025
37AQI
26th September 2025
29AQI
27th September 2025
36AQI
28th September 2025
29AQI
29th September 2025
40AQI
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

88AQI

60AQI

58AQI

67AQI

49AQI

39AQI

39AQI

42AQI

34AQI

No. of days

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

202553AQI

24
7
4
24
12
19
3
24
3
17
14
25
5
30
1
23
8
29
143
119
10

Highest AQI recorded in

January

88AQI

Lowest AQI recorded in

September

34AQI

202452AQI

13
8
12
3
2
8
14
7
11
20
3
28
2
31
31
22
7
10
15
5
1
2
28
26
5
184
117
12
1

Highest AQI recorded in

December

84AQI

Lowest AQI recorded in

July

30AQI

202360AQI

2
8
1
2
10
1
1
1
2
1
5
2
8
1
5
3
7
21
2
28
52
3

Highest AQI recorded in

November

81AQI

Lowest AQI recorded in

July

21AQI

202246AQI

11
18
13
8
14
17
10
8
29
2
26
3
17
1
4
4
1
13
9
3
19
3
1
5
7
1
162
79
6

Highest AQI recorded in

December

63AQI

Lowest AQI recorded in

July

28AQI

202150AQI

1
23
6
1
10
17
1
15
15
1
22
8
29
2
23
7
29
2
29
2
24
6
23
8
10
19
1
2
28
1
217
137
10
1

Highest AQI recorded in

January

85AQI

Lowest AQI recorded in

August

34AQI

202047AQI

9
1
9
4
13
4
28
25
3
1
26
5
25
5
14
16
1
8
17
5
3
17
11
160
72
18

Highest AQI recorded in

December

85AQI

Lowest AQI recorded in

June

28AQI

Most & Least Polluted Years Over the Last 6 Years

Most Polluted Year Recorded
2023(Avg.)
60AQI
Least Polluted Year Recorded
2022(Avg.)
46AQI

Water Company Station's annual 2025 AQI (53) shows an average percentage change of 4.8% (worsened AQI) compared to previous years: 2020 (47), 2021 (50), 2022 (46), 2023 (60), 2024 (52).