Country Background
HistoryAQIPM2.5PM10COSO2NO2O3

Haitang Bay, Sanya, 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+

October Air Quality Analysis

Haitang Bay, Sanya, Hainan, China

2021
2022
2023
2024
2025
AQI
.
Days

AQI Trends: Highest and Lowest

Highest AQI recorded on
9th Oct 2024
119AQI
Lowest AQI recorded on
8th Oct 2021
15AQI

Same Day Analysis (3rd October ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 2nd highest AQI at 45 of Good air quality, showing improvement over 2024 on the same day.

Download 2024 Annual Data

World Air Quality Report

Globe

Day & Night AQI Trend: 3rd Oct - 4th Oct 2025

Haitang Bay, Sanya, Hainan, China

AQI
Day
Night
.

6 AM3rd Oct 2025

6 PM

5 AM4th Oct 2025

Day time
Avg. Highest Time
12AMNaNth undefined

AQI

Avg. Lowest Time
12AMNaNth undefined

AQI

Night time
Avg. Highest Time
12AM4th Oct

46AQI

Avg. Lowest Time
8PM3rd Oct

20AQI

In the last 24 hours,

Haitang Bay's AQI reached its highest point of 46 at 12 AM during the Night, while the lowest point, undefined, was recorded at 5 AM during the Night between 3rd Oct and 4th Oct 2025.

Day & Night AQI Trend : Sep - Oct 2025

Haitang Bay, Sanya, Hainan, China

SepOct
04th - 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 - 01st01st - 02nd02nd - 03rd03rd - 04th04th
Day
Night
4th Sep 2025346 AMAQI
4th Sep 2025367 AMAQI
4th Sep 2025228 AMAQI
4th Sep 2025269 AMAQI
4th Sep 20252610 AMAQI
4th Sep 20253411 AMAQI
4th Sep 20253412 PMAQI
4th Sep 2025231 PMAQI
4th Sep 2025222 PMAQI
4th Sep 2025223 PMAQI
4th Sep 2025264 PMAQI
4th Sep 2025305 PMAQI
4th Sep 2025536 PMAQI
4th Sep 2025557 PMAQI
4th Sep 2025558 PMAQI
4th Sep 2025439 PMAQI
4th Sep 20253710 PMAQI
4th Sep 20254011 PMAQI
5th Sep 20254412 AMAQI
5th Sep 2025331 AMAQI
5th Sep 2025342 AMAQI
5th Sep 2025323 AMAQI
5th Sep 2025324 AMAQI
5th Sep 2025415 AMAQI

27°C25/30°C

5th Sep 2025366 AMAQI
5th Sep 2025347 AMAQI
5th Sep 2025208 AMAQI
5th Sep 2025209 AMAQI
5th Sep 20253310 AMAQI
5th Sep 20253011 AMAQI
5th Sep 20252912 PMAQI
5th Sep 2025301 PMAQI
5th Sep 2025392 PMAQI
5th Sep 2025363 PMAQI
5th Sep 2025184 PMAQI
5th Sep 2025275 PMAQI
5th Sep 2025266 PMAQI
5th Sep 2025267 PMAQI
5th Sep 2025258 PMAQI
5th Sep 2025279 PMAQI
5th Sep 20252610 PMAQI
5th Sep 20253211 PMAQI
6th Sep 20253112 AMAQI
6th Sep 2025301 AMAQI
6th Sep 2025242 AMAQI
6th Sep 2025303 AMAQI
6th Sep 2025364 AMAQI
6th Sep 2025345 AMAQI

27°C25/30°C

6th Sep 2025366 AMAQI
6th Sep 2025357 AMAQI
6th Sep 2025248 AMAQI
6th Sep 2025229 AMAQI
6th Sep 20252210 AMAQI
6th Sep 20252511 AMAQI
6th Sep 20252012 PMAQI
6th Sep 2025181 PMAQI
6th Sep 2025282 PMAQI
6th Sep 2025363 PMAQI
6th Sep 2025324 PMAQI
6th Sep 2025345 PMAQI
6th Sep 2025446 PMAQI
6th Sep 2025297 PMAQI
6th Sep 2025308 PMAQI
6th Sep 2025349 PMAQI
6th Sep 20253310 PMAQI
6th Sep 20253311 PMAQI
7th Sep 20253812 AMAQI
7th Sep 2025301 AMAQI
7th Sep 2025342 AMAQI
7th Sep 2025323 AMAQI
7th Sep 2025314 AMAQI
7th Sep 2025305 AMAQI

27°C25/30°C

7th Sep 2025326 AMAQI
7th Sep 2025337 AMAQI
7th Sep 2025328 AMAQI
7th Sep 2025309 AMAQI
7th Sep 20253610 AMAQI
7th Sep 20254311 AMAQI
7th Sep 20253112 PMAQI
7th Sep 2025361 PMAQI
7th Sep 2025342 PMAQI
7th Sep 2025343 PMAQI
7th Sep 2025304 PMAQI
7th Sep 2025315 PMAQI
7th Sep 2025436 PMAQI
7th Sep 2025407 PMAQI
7th Sep 2025428 PMAQI
7th Sep 2025419 PMAQI
7th Sep 20254410 PMAQI
7th Sep 20254311 PMAQI
8th Sep 20253612 AMAQI
8th Sep 2025311 AMAQI
8th Sep 2025312 AMAQI
8th Sep 2025343 AMAQI
8th Sep 2025334 AMAQI
8th Sep 2025335 AMAQI

27°C24/31°C

8th Sep 2025346 AMAQI
8th Sep 2025337 AMAQI
8th Sep 2025298 AMAQI
8th Sep 2025249 AMAQI
8th Sep 20252010 AMAQI
8th Sep 20252011 AMAQI
8th Sep 20252212 PMAQI
8th Sep 2025231 PMAQI
8th Sep 2025262 PMAQI
8th Sep 2025343 PMAQI
8th Sep 2025324 PMAQI
8th Sep 2025285 PMAQI
8th Sep 2025306 PMAQI
8th Sep 2025367 PMAQI
8th Sep 2025328 PMAQI
8th Sep 2025349 PMAQI
8th Sep 20253310 PMAQI
8th Sep 20253611 PMAQI
9th Sep 20253012 AMAQI
9th Sep 2025341 AMAQI
9th Sep 2025342 AMAQI
9th Sep 2025343 AMAQI
9th Sep 2025364 AMAQI
9th Sep 2025345 AMAQI

27°C26/30°C

9th Sep 2025326 AMAQI
9th Sep 2025337 AMAQI
9th Sep 2025218 AMAQI
9th Sep 2025269 AMAQI
9th Sep 20253110 AMAQI
9th Sep 20252711 AMAQI
9th Sep 20252612 PMAQI
9th Sep 2025341 PMAQI
9th Sep 2025332 PMAQI
9th Sep 2025323 PMAQI
9th Sep 2025364 PMAQI
9th Sep 2025405 PMAQI
9th Sep 2025406 PMAQI
9th Sep 2025367 PMAQI
9th Sep 2025338 PMAQI
9th Sep 2025349 PMAQI
9th Sep 20253410 PMAQI
9th Sep 20253211 PMAQI
10th Sep 20253412 AMAQI
10th Sep 2025391 AMAQI
10th Sep 2025352 AMAQI
10th Sep 2025373 AMAQI
10th Sep 2025344 AMAQI
10th Sep 2025345 AMAQI

27°C25/30°C

10th Sep 2025346 AMAQI
10th Sep 2025347 AMAQI
10th Sep 2025178 AMAQI
10th Sep 2025229 AMAQI
10th Sep 20253010 AMAQI
10th Sep 20252311 AMAQI
10th Sep 20252612 PMAQI
10th Sep 2025231 PMAQI
10th Sep 2025242 PMAQI
10th Sep 2025263 PMAQI
10th Sep 2025324 PMAQI
10th Sep 2025305 PMAQI
10th Sep 2025316 PMAQI
10th Sep 2025357 PMAQI
10th Sep 2025378 PMAQI
10th Sep 2025389 PMAQI
10th Sep 20253410 PMAQI
10th Sep 20253611 PMAQI
11th Sep 20253512 AMAQI
11th Sep 2025361 AMAQI
11th Sep 2025362 AMAQI
11th Sep 2025363 AMAQI
11th Sep 2025354 AMAQI
11th Sep 2025345 AMAQI

27°C26/29°C

11th Sep 2025336 AMAQI
11th Sep 2025347 AMAQI
11th Sep 2025168 AMAQI
11th Sep 2025249 AMAQI
11th Sep 20252110 AMAQI
11th Sep 20252711 AMAQI
11th Sep 20252212 PMAQI
11th Sep 2025251 PMAQI
11th Sep 2025322 PMAQI
11th Sep 2025303 PMAQI
11th Sep 2025374 PMAQI
11th Sep 2025365 PMAQI
11th Sep 2025246 PMAQI
11th Sep 2025407 PMAQI
11th Sep 2025308 PMAQI
11th Sep 2025349 PMAQI
11th Sep 20253210 PMAQI
11th Sep 20253311 PMAQI
12th Sep 20253212 AMAQI
12th Sep 2025361 AMAQI
12th Sep 2025372 AMAQI
12th Sep 2025353 AMAQI
12th Sep 2025324 AMAQI
12th Sep 2025365 AMAQI

27°C25/30°C

12th Sep 2025366 AMAQI
12th Sep 2025387 AMAQI
12th Sep 2025248 AMAQI
12th Sep 2025199 AMAQI
12th Sep 20252210 AMAQI
12th Sep 20252011 AMAQI
12th Sep 20252112 PMAQI
12th Sep 2025231 PMAQI
12th Sep 2025292 PMAQI
12th Sep 2025323 PMAQI
12th Sep 2025354 PMAQI
12th Sep 2025405 PMAQI
12th Sep 2025426 PMAQI
12th Sep 2025387 PMAQI
12th Sep 2025298 PMAQI
12th Sep 2025319 PMAQI
12th Sep 20253410 PMAQI
12th Sep 20253311 PMAQI
13th Sep 20253112 AMAQI
13th Sep 2025361 AMAQI
13th Sep 2025342 AMAQI
13th Sep 2025333 AMAQI
13th Sep 2025344 AMAQI
13th Sep 2025335 AMAQI

27°C25/31°C

13th Sep 2025336 AMAQI
13th Sep 2025337 AMAQI
13th Sep 2025188 AMAQI
13th Sep 2025169 AMAQI
13th Sep 20251710 AMAQI
13th Sep 20251911 AMAQI
13th Sep 20252312 PMAQI
13th Sep 2025221 PMAQI
13th Sep 2025232 PMAQI
13th Sep 2025233 PMAQI
13th Sep 2025204 PMAQI
13th Sep 2025225 PMAQI
13th Sep 2025246 PMAQI
13th Sep 2025247 PMAQI
13th Sep 2025308 PMAQI
13th Sep 2025329 PMAQI
13th Sep 20253010 PMAQI
13th Sep 20253011 PMAQI
14th Sep 20253012 AMAQI
14th Sep 2025321 AMAQI
14th Sep 2025342 AMAQI
14th Sep 2025323 AMAQI
14th Sep 2025334 AMAQI
14th Sep 2025345 AMAQI

27°C25/31°C

14th Sep 2025326 AMAQI
14th Sep 2025327 AMAQI
14th Sep 2025228 AMAQI
14th Sep 2025139 AMAQI
14th Sep 20251810 AMAQI
14th Sep 20251411 AMAQI
14th Sep 20251612 PMAQI
14th Sep 2025151 PMAQI
14th Sep 2025182 PMAQI
14th Sep 2025233 PMAQI
14th Sep 2025164 PMAQI
14th Sep 2025175 PMAQI
14th Sep 2025236 PMAQI
14th Sep 2025307 PMAQI
14th Sep 2025258 PMAQI
14th Sep 2025329 PMAQI
14th Sep 20253010 PMAQI
14th Sep 20252911 PMAQI
15th Sep 20253712 AMAQI
15th Sep 2025321 AMAQI
15th Sep 2025312 AMAQI
15th Sep 2025303 AMAQI
15th Sep 2025294 AMAQI
15th Sep 2025295 AMAQI

27°C25/30°C

15th Sep 2025306 AMAQI
15th Sep 2025307 AMAQI
15th Sep 2025308 AMAQI
15th Sep 2025259 AMAQI
15th Sep 20252210 AMAQI
15th Sep 20252611 AMAQI
15th Sep 20251912 PMAQI
15th Sep 2025191 PMAQI
15th Sep 2025162 PMAQI
15th Sep 2025193 PMAQI
15th Sep 2025164 PMAQI
15th Sep 2025155 PMAQI
15th Sep 2025146 PMAQI
15th Sep 2025227 PMAQI
15th Sep 2025268 PMAQI
15th Sep 2025309 PMAQI
15th Sep 20252610 PMAQI
15th Sep 20252611 PMAQI
16th Sep 20252212 AMAQI
16th Sep 2025281 AMAQI
16th Sep 2025322 AMAQI
16th Sep 2025313 AMAQI
16th Sep 2025294 AMAQI
16th Sep 2025295 AMAQI

27°C25/30°C

16th Sep 2025306 AMAQI
16th Sep 2025297 AMAQI
16th Sep 2025208 AMAQI
16th Sep 2025199 AMAQI
16th Sep 20252410 AMAQI
16th Sep 20252311 AMAQI
16th Sep 20252312 PMAQI
16th Sep 2025231 PMAQI
16th Sep 2025222 PMAQI
16th Sep 2025203 PMAQI
16th Sep 2025184 PMAQI
16th Sep 2025185 PMAQI
16th Sep 2025206 PMAQI
16th Sep 2025207 PMAQI
16th Sep 2025268 PMAQI
16th Sep 2025249 PMAQI
16th Sep 20252910 PMAQI
16th Sep 20252611 PMAQI
17th Sep 20252812 AMAQI
17th Sep 2025301 AMAQI
17th Sep 2025302 AMAQI
17th Sep 2025283 AMAQI
17th Sep 2025294 AMAQI
17th Sep 2025285 AMAQI

27°C25/31°C

17th Sep 2025286 AMAQI
17th Sep 2025287 AMAQI
17th Sep 2025188 AMAQI
17th Sep 2025279 AMAQI
17th Sep 20255110 AMAQI
17th Sep 20255011 AMAQI
17th Sep 20253912 PMAQI
17th Sep 2025261 PMAQI
17th Sep 2025222 PMAQI
17th Sep 2025313 PMAQI
17th Sep 2025204 PMAQI
17th Sep 2025315 PMAQI
17th Sep 2025256 PMAQI
17th Sep 2025327 PMAQI
17th Sep 2025328 PMAQI
17th Sep 2025329 PMAQI
17th Sep 20253210 PMAQI
17th Sep 20252911 PMAQI
18th Sep 20252812 AMAQI
18th Sep 2025281 AMAQI
18th Sep 2025302 AMAQI
18th Sep 2025293 AMAQI
18th Sep 2025304 AMAQI
18th Sep 2025305 AMAQI

27°C24/30°C

18th Sep 2025306 AMAQI
18th Sep 2025327 AMAQI
18th Sep 2025248 AMAQI
18th Sep 2025279 AMAQI
18th Sep 20253310 AMAQI
18th Sep 20252011 AMAQI
18th Sep 20252212 PMAQI
18th Sep 2025221 PMAQI
18th Sep 2025232 PMAQI
18th Sep 2025273 PMAQI
18th Sep 2025284 PMAQI
18th Sep 2025245 PMAQI
18th Sep 2025206 PMAQI
18th Sep 2025277 PMAQI
18th Sep 2025308 PMAQI
18th Sep 2025319 PMAQI
18th Sep 20252810 PMAQI
18th Sep 20252411 PMAQI
19th Sep 20252512 AMAQI
19th Sep 2025271 AMAQI
19th Sep 2025302 AMAQI
19th Sep 2025293 AMAQI
19th Sep 2025304 AMAQI
19th Sep 2025305 AMAQI

27°C24/31°C

19th Sep 2025296 AMAQI
19th Sep 2025297 AMAQI
19th Sep 2025178 AMAQI
19th Sep 2025189 AMAQI
19th Sep 20251610 AMAQI
19th Sep 20251711 AMAQI
19th Sep 20252312 PMAQI
19th Sep 2025201 PMAQI
19th Sep 2025162 PMAQI
19th Sep 2025183 PMAQI
19th Sep 2025204 PMAQI
19th Sep 2025195 PMAQI
19th Sep 2025246 PMAQI
19th Sep 2025247 PMAQI
19th Sep 2025248 PMAQI
19th Sep 2025249 PMAQI
19th Sep 20252710 PMAQI
19th Sep 20253911 PMAQI
20th Sep 20254012 AMAQI
20th Sep 2025321 AMAQI
20th Sep 2025302 AMAQI
20th Sep 2025293 AMAQI
20th Sep 2025284 AMAQI
20th Sep 2025285 AMAQI

27°C25/31°C

20th Sep 2025286 AMAQI
20th Sep 2025287 AMAQI
20th Sep 2025198 AMAQI
20th Sep 2025179 AMAQI
20th Sep 20252010 AMAQI
20th Sep 20252011 AMAQI
20th Sep 20251912 PMAQI
20th Sep 2025201 PMAQI
20th Sep 2025222 PMAQI
20th Sep 2025193 PMAQI
20th Sep 2025234 PMAQI
20th Sep 2025185 PMAQI
20th Sep 2025206 PMAQI
20th Sep 2025247 PMAQI
20th Sep 2025298 PMAQI
20th Sep 2025419 PMAQI
20th Sep 20253310 PMAQI
20th Sep 20253411 PMAQI
21st Sep 20253312 AMAQI
21st Sep 2025321 AMAQI
21st Sep 2025322 AMAQI
21st Sep 2025323 AMAQI
21st Sep 2025314 AMAQI
21st Sep 2025305 AMAQI

27°C25/30°C

21st Sep 2025286 AMAQI
21st Sep 2025277 AMAQI
21st Sep 2025278 AMAQI
21st Sep 2025379 AMAQI
21st Sep 20253010 AMAQI
21st Sep 20253111 AMAQI
21st Sep 20252712 PMAQI
21st Sep 2025321 PMAQI
21st Sep 2025322 PMAQI
21st Sep 2025293 PMAQI
21st Sep 2025214 PMAQI
21st Sep 2025265 PMAQI
21st Sep 2025466 PMAQI
21st Sep 2025407 PMAQI
21st Sep 2025428 PMAQI
21st Sep 2025469 PMAQI
21st Sep 20253910 PMAQI
21st Sep 20253111 PMAQI
22nd Sep 20252812 AMAQI
22nd Sep 2025291 AMAQI
22nd Sep 2025302 AMAQI
22nd Sep 2025313 AMAQI
22nd Sep 2025324 AMAQI
22nd Sep 2025315 AMAQI

27°C25/31°C

22nd Sep 2025316 AMAQI
22nd Sep 2025317 AMAQI
22nd Sep 2025308 AMAQI
22nd Sep 2025289 AMAQI
22nd Sep 20253310 AMAQI
22nd Sep 20252211 AMAQI
22nd Sep 20252012 PMAQI
22nd Sep 2025241 PMAQI
22nd Sep 2025172 PMAQI
22nd Sep 2025183 PMAQI
22nd Sep 2025194 PMAQI
22nd Sep 2025205 PMAQI
22nd Sep 2025346 PMAQI
22nd Sep 2025297 PMAQI
22nd Sep 2025288 PMAQI
22nd Sep 2025329 PMAQI
22nd Sep 20253210 PMAQI
22nd Sep 20253111 PMAQI
23rd Sep 20253212 AMAQI
23rd Sep 2025301 AMAQI
23rd Sep 2025312 AMAQI
23rd Sep 2025313 AMAQI
23rd Sep 2025304 AMAQI
23rd Sep 2025305 AMAQI

27°C25/30°C

23rd Sep 2025296 AMAQI
23rd Sep 2025297 AMAQI
23rd Sep 2025248 AMAQI
23rd Sep 2025279 AMAQI
23rd Sep 20253410 AMAQI
23rd Sep 20253711 AMAQI
23rd Sep 20253512 PMAQI
23rd Sep 2025351 PMAQI
23rd Sep 2025282 PMAQI
23rd Sep 2025213 PMAQI
23rd Sep 2025224 PMAQI
23rd Sep 2025285 PMAQI
23rd Sep 2025286 PMAQI
23rd Sep 2025367 PMAQI
23rd Sep 2025318 PMAQI
23rd Sep 2025309 PMAQI
23rd Sep 20253010 PMAQI
23rd Sep 20253411 PMAQI
24th Sep 20253612 AMAQI
24th Sep 2025311 AMAQI
24th Sep 2025302 AMAQI
24th Sep 2025313 AMAQI
24th Sep 2025304 AMAQI
24th Sep 2025305 AMAQI

27°C25/30°C

24th Sep 2025316 AMAQI
24th Sep 2025307 AMAQI
24th Sep 2025398 AMAQI
24th Sep 2025429 AMAQI
24th Sep 20254910 AMAQI
24th Sep 20255011 AMAQI
24th Sep 20254112 PMAQI
24th Sep 2025411 PMAQI
24th Sep 2025442 PMAQI
24th Sep 2025383 PMAQI
24th Sep 2025394 PMAQI
24th Sep 2025385 PMAQI
24th Sep 2025346 PMAQI
24th Sep 2025367 PMAQI
24th Sep 2025368 PMAQI
24th Sep 2025369 PMAQI
24th Sep 20253710 PMAQI
24th Sep 20253811 PMAQI
25th Sep 20253512 AMAQI
25th Sep 2025321 AMAQI
25th Sep 2025312 AMAQI
25th Sep 2025333 AMAQI
25th Sep 2025344 AMAQI
25th Sep 2025355 AMAQI

27°C25/31°C

25th Sep 2025346 AMAQI
25th Sep 2025347 AMAQI
25th Sep 2025508 AMAQI
25th Sep 2025559 AMAQI
25th Sep 20255310 AMAQI
25th Sep 20255211 AMAQI
25th Sep 20254212 PMAQI
25th Sep 2025501 PMAQI
25th Sep 2025552 PMAQI
25th Sep 2025553 PMAQI
25th Sep 2025554 PMAQI
25th Sep 2025555 PMAQI
25th Sep 2025486 PMAQI
25th Sep 2025487 PMAQI
25th Sep 2025448 PMAQI
25th Sep 2025509 PMAQI
25th Sep 20255610 PMAQI
25th Sep 20255711 PMAQI
26th Sep 20255312 AMAQI
26th Sep 2025521 AMAQI
26th Sep 2025442 AMAQI
26th Sep 2025363 AMAQI
26th Sep 2025284 AMAQI
26th Sep 2025235 AMAQI

28°C26/30°C

26th Sep 2025246 AMAQI
26th Sep 2025227 AMAQI
26th Sep 2025208 AMAQI
26th Sep 2025209 AMAQI
26th Sep 20251810 AMAQI
26th Sep 20252211 AMAQI
26th Sep 20252712 PMAQI
26th Sep 2025261 PMAQI
26th Sep 2025272 PMAQI
26th Sep 2025273 PMAQI
26th Sep 2025284 PMAQI
26th Sep 2025265 PMAQI
26th Sep 2025246 PMAQI
26th Sep 2025227 PMAQI
26th Sep 2025248 PMAQI
26th Sep 2025229 PMAQI
26th Sep 20252110 PMAQI
26th Sep 20252211 PMAQI
27th Sep 20252112 AMAQI
27th Sep 2025221 AMAQI
27th Sep 2025222 AMAQI
27th Sep 2025223 AMAQI
27th Sep 2025224 AMAQI
27th Sep 2025225 AMAQI

27°C26/30°C

27th Sep 2025226 AMAQI
27th Sep 2025227 AMAQI
27th Sep 2025228 AMAQI
27th Sep 2025229 AMAQI
27th Sep 20252210 AMAQI
27th Sep 20253711 AMAQI
27th Sep 20254412 PMAQI
27th Sep 2025431 PMAQI
27th Sep 2025382 PMAQI
27th Sep 2025383 PMAQI
27th Sep 2025394 PMAQI
27th Sep 2025395 PMAQI
27th Sep 2025396 PMAQI
27th Sep 2025397 PMAQI
27th Sep 2025398 PMAQI
27th Sep 2025399 PMAQI
27th Sep 20253910 PMAQI
27th Sep 20253911 PMAQI
28th Sep 20253912 AMAQI
28th Sep 2025391 AMAQI
28th Sep 2025182 AMAQI
28th Sep 2025113 AMAQI
28th Sep 2025134 AMAQI
28th Sep 2025185 AMAQI

28°C25/31°C

28th Sep 2025156 AMAQI
28th Sep 2025147 AMAQI
28th Sep 2025178 AMAQI
28th Sep 2025119 AMAQI
28th Sep 20251210 AMAQI
28th Sep 20251811 AMAQI
28th Sep 20253212 PMAQI
28th Sep 2025371 PMAQI
28th Sep 2025272 PMAQI
28th Sep 2025293 PMAQI
28th Sep 2025244 PMAQI
28th Sep 2025265 PMAQI
28th Sep 2025236 PMAQI
28th Sep 2025227 PMAQI
28th Sep 2025278 PMAQI
28th Sep 2025329 PMAQI
28th Sep 20253310 PMAQI
28th Sep 20253311 PMAQI
29th Sep 20253312 AMAQI
29th Sep 2025411 AMAQI
29th Sep 2025502 AMAQI
29th Sep 2025503 AMAQI
29th Sep 2025504 AMAQI
29th Sep 2025505 AMAQI

26°C25/26°C

29th Sep 2025456 AMAQI
29th Sep 2025407 AMAQI
29th Sep 2025448 AMAQI
29th Sep 2025449 AMAQI
29th Sep 20254310 AMAQI
29th Sep 20253911 AMAQI
29th Sep 20254212 PMAQI
29th Sep 2025411 PMAQI
29th Sep 2025402 PMAQI
29th Sep 2025443 PMAQI
29th Sep 2025444 PMAQI
29th Sep 2025445 PMAQI
29th Sep 2025446 PMAQI
29th Sep 2025447 PMAQI
29th Sep 2025538 PMAQI
29th Sep 2025799 PMAQI
29th Sep 20255410 PMAQI
29th Sep 20255511 PMAQI
30th Sep 20255212 AMAQI
30th Sep 2025531 AMAQI
30th Sep 2025472 AMAQI
30th Sep 2025553 AMAQI
30th Sep 2025544 AMAQI
30th Sep 2025465 AMAQI

27°C27/28°C

30th Sep 2025416 AMAQI
30th Sep 2025417 AMAQI
30th Sep 2025458 AMAQI
30th Sep 2025399 AMAQI
30th Sep 20254810 AMAQI
30th Sep 20255011 AMAQI
30th Sep 20255012 PMAQI
30th Sep 2025451 PMAQI
30th Sep 2025382 PMAQI
30th Sep 2025453 PMAQI
30th Sep 2025384 PMAQI
30th Sep 2025275 PMAQI
30th Sep 2025346 PMAQI
30th Sep 2025377 PMAQI
30th Sep 2025338 PMAQI
30th Sep 2025489 PMAQI
30th Sep 20254310 PMAQI
30th Sep 20253811 PMAQI
1st Oct 20253712 AMAQI
1st Oct 2025451 AMAQI
1st Oct 2025412 AMAQI
1st Oct 2025463 AMAQI
1st Oct 2025514 AMAQI
1st Oct 2025395 AMAQI

27°C26/29°C

1st Oct 2025346 AMAQI
1st Oct 2025367 AMAQI
1st Oct 2025368 AMAQI
1st Oct 2025409 AMAQI
1st Oct 20253310 AMAQI
1st Oct 20252311 AMAQI
1st Oct 20251912 PMAQI
1st Oct 2025171 PMAQI
1st Oct 2025172 PMAQI
1st Oct 2025223 PMAQI
1st Oct 2025174 PMAQI
1st Oct 2025185 PMAQI
1st Oct 2025176 PMAQI
1st Oct 2025187 PMAQI
1st Oct 2025198 PMAQI
1st Oct 2025279 PMAQI
1st Oct 20253210 PMAQI
1st Oct 20252611 PMAQI
2nd Oct 20253112 AMAQI
2nd Oct 2025351 AMAQI
2nd Oct 2025362 AMAQI
2nd Oct 2025383 AMAQI
2nd Oct 2025364 AMAQI
2nd Oct 2025345 AMAQI

26°C24/30°C

2nd Oct 2025406 AMAQI
2nd Oct 2025367 AMAQI
2nd Oct 2025378 AMAQI
2nd Oct 2025349 AMAQI
2nd Oct 20254010 AMAQI
2nd Oct 20255111 AMAQI
2nd Oct 20254312 PMAQI
2nd Oct 2025401 PMAQI
2nd Oct 2025372 PMAQI
2nd Oct 2025333 PMAQI
2nd Oct 2025364 PMAQI
2nd Oct 2025335 PMAQI
2nd Oct 2025366 PMAQI
2nd Oct 2025337 PMAQI
2nd Oct 2025348 PMAQI
2nd Oct 2025419 PMAQI
2nd Oct 20254310 PMAQI
2nd Oct 20254411 PMAQI
3rd Oct 20255112 AMAQI
3rd Oct 2025511 AMAQI
3rd Oct 2025482 AMAQI
3rd Oct 2025523 AMAQI
3rd Oct 2025464 AMAQI
3rd Oct 2025445 AMAQI

26°C24/30°C

3rd Oct 2025406 AMAQI
3rd Oct 2025347 AMAQI
3rd Oct 2025328 AMAQI
3rd Oct 2025309 AMAQI
3rd Oct 20253410 AMAQI
3rd Oct 20253711 AMAQI
3rd Oct 20253412 PMAQI
3rd Oct 2025301 PMAQI
3rd Oct 2025302 PMAQI
3rd Oct 2025303 PMAQI
3rd Oct 2025324 PMAQI
3rd Oct 2025305 PMAQI
3rd Oct 2025326 PMAQI
3rd Oct 2025247 PMAQI
3rd Oct 2025208 PMAQI
3rd Oct 2025409 PMAQI
3rd Oct 20253910 PMAQI
3rd Oct 20254411 PMAQI
4th Oct 20254612 AMAQI
4th Oct 2025451 AMAQI
4th Oct 2025352 AMAQI
4th Oct 2025453 AMAQI
4th Oct 2025394 AMAQI

--°C/°C

6 AM
12 PM
6 PM
12 AM
5 AM

--°C/°C

Day time
Avg. Highest Time
6 AM - 7 AM

32AQI

2 hours / Day
60 hours / Month
Avg. Lowest Time
8 AM - 9 AM

27AQI

2 hours / Day
60 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 6 AM to 7 AM (Avg. 32), while the lowest AQI was between 8 AM to 9 AM (Avg. 27).
Night time
Avg. Highest Time
9 PM - 11 PM

35AQI

3 hours / Day
90 hours / Month
Avg. Lowest Time
7 PM - 8 PM

32AQI

2 hours / Day
60 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 9 PM to 11 PM (Avg. 35), while the lowest AQI was between 7 PM to 8 PM (Avg. 32).

2025 Days Vs Air Quality

Haitang Bay, Sanya, Hainan, China

2025

66%

182

32%

89

2%

5

Total number of days with different AQI categories in last 276 days in 2025 (89 days remaining)

Good
182 Days
Moderate
89 Days
Poor
5 Days
Unhealthy
0 Days
Severe
0 Days
Hazardous
0 Days

Under WHO’s Safe Air Quality Limits: 66%

Health Risk Level:

Moderate

In 2025, 66% of 276 days were within WHO’s safe air quality limits, and 34% exceeded them. The risk of health issues is Moderate, particularly for individuals with respiratory or heart conditions.

Annual Air Quality Insights

Haitang Bay, Sanya, 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
81AQI
2nd January 2025
75AQI
3rd January 2025
86AQI
4th January 2025
76AQI
5th January 2025
89AQI
6th January 2025
93AQI
7th January 2025
78AQI
8th January 2025
73AQI
9th January 2025
75AQI
10th January 2025
104AQI
11th January 2025
75AQI
12th January 2025
82AQI
13th January 2025
63AQI
14th January 2025
55AQI
15th January 2025
54AQI
16th January 2025
82AQI
17th January 2025
83AQI
18th January 2025
78AQI
19th January 2025
80AQI
20th January 2025
77AQI
21st January 2025
74AQI
22nd January 2025
70AQI
23rd January 2025
66AQI
24th January 2025
56AQI
25th January 2025
53AQI
26th January 2025
50AQI
27th January 2025
52AQI
28th January 2025
58AQI
29th January 2025
67AQI
30th January 2025
61AQI
31st January 2025
59AQI
1st February 2025
45AQI
2nd February 2025
40AQI
3rd February 2025
44AQI
4th February 2025
38AQI
5th February 2025
50AQI
6th February 2025
54AQI
7th February 2025
60AQI
8th February 2025
44AQI
9th February 2025
59AQI
10th February 2025
56AQI
11th February 2025
46AQI
12th February 2025
45AQI
13th February 2025
43AQI
14th February 2025
36AQI
15th February 2025
57AQI
16th February 2025
34AQI
17th February 2025
56AQI
18th February 2025
60AQI
19th February 2025
67AQI
20th February 2025
60AQI
21st February 2025
60AQI
22nd February 2025
40AQI
23rd February 2025
39AQI
24th February 2025
34AQI
25th February 2025
39AQI
26th February 2025
48AQI
27th February 2025
52AQI
28th February 2025
51AQI
1st March 2025
49AQI
2nd March 2025
45AQI
3rd March 2025
49AQI
4th March 2025
41AQI
5th March 2025
42AQI
6th March 2025
31AQI
7th March 2025
36AQI
8th March 2025
30AQI
9th March 2025
52AQI
10th March 2025
51AQI
11th March 2025
56AQI
12th March 2025
49AQI
13th March 2025
47AQI
14th March 2025
40AQI
15th March 2025
43AQI
16th March 2025
37AQI
17th March 2025
45AQI
18th March 2025
44AQI
19th March 2025
64AQI
20th March 2025
63AQI
21st March 2025
70AQI
22nd March 2025
67AQI
23rd March 2025
65AQI
24th March 2025
64AQI
25th March 2025
63AQI
26th March 2025
55AQI
27th March 2025
59AQI
28th March 2025
56AQI
29th March 2025
58AQI
30th March 2025
34AQI
31st March 2025
32AQI
1st April 2025
29AQI
2nd April 2025
50AQI
3rd April 2025
55AQI
4th April 2025
53AQI
5th April 2025
61AQI
6th April 2025
46AQI
7th April 2025
58AQI
8th April 2025
55AQI
9th April 2025
63AQI
10th April 2025
57AQI
11th April 2025
57AQI
12th April 2025
57AQI
13th April 2025
71AQI
14th April 2025
112AQI
15th April 2025
116AQI
16th April 2025
114AQI
17th April 2025
103AQI
18th April 2025
73AQI
19th April 2025
57AQI
20th April 2025
57AQI
21st April 2025
55AQI
22nd April 2025
54AQI
23rd April 2025
44AQI
24th April 2025
51AQI
25th April 2025
50AQI
26th April 2025
46AQI
27th April 2025
38AQI
28th April 2025
49AQI
29th April 2025
43AQI
30th April 2025
53AQI
1st May 2025
52AQI
2nd May 2025
55AQI
3rd May 2025
58AQI
4th May 2025
51AQI
5th May 2025
47AQI
6th May 2025
53AQI
7th May 2025
54AQI
8th May 2025
46AQI
9th May 2025
52AQI
10th May 2025
40AQI
11th May 2025
37AQI
12th May 2025
52AQI
13th May 2025
51AQI
14th May 2025
42AQI
15th May 2025
32AQI
16th May 2025
30AQI
17th May 2025
30AQI
18th May 2025
32AQI
19th May 2025
28AQI
20th May 2025
33AQI
21st May 2025
34AQI
22nd May 2025
28AQI
23rd May 2025
24AQI
24th May 2025
27AQI
25th May 2025
35AQI
26th May 2025
42AQI
27th May 2025
38AQI
28th May 2025
35AQI
29th May 2025
32AQI
30th May 2025
33AQI
31st May 2025
31AQI
1st June 2025
35AQI
2nd June 2025
40AQI
3rd June 2025
40AQI
4th June 2025
41AQI
5th June 2025
35AQI
6th June 2025
33AQI
7th June 2025
33AQI
8th June 2025
44AQI
9th June 2025
47AQI
10th June 2025
52AQI
11th June 2025
37AQI
12th June 2025
35AQI
13th June 2025
29AQI
14th June 2025
29AQI
15th June 2025
33AQI
16th June 2025
44AQI
17th June 2025
40AQI
18th June 2025
37AQI
19th June 2025
35AQI
20th June 2025
35AQI
21st June 2025
32AQI
22nd June 2025
34AQI
23rd June 2025
28AQI
24th June 2025
29AQI
25th June 2025
25AQI
26th June 2025
25AQI
27th June 2025
24AQI
28th June 2025
26AQI
29th June 2025
25AQI
30th June 2025
26AQI
1st July 2025
33AQI
2nd July 2025
26AQI
3rd July 2025
24AQI
4th July 2025
25AQI
5th July 2025
26AQI
6th July 2025
28AQI
7th July 2025
26AQI
8th July 2025
30AQI
9th July 2025
37AQI
10th July 2025
37AQI
11th July 2025
42AQI
12th July 2025
39AQI
13th July 2025
43AQI
14th July 2025
46AQI
15th July 2025
47AQI
16th July 2025
46AQI
17th July 2025
46AQI
18th July 2025
50AQI
19th July 2025
38AQI
20th July 2025
37AQI
21st July 2025
31AQI
22nd July 2025
30AQI
23rd July 2025
30AQI
24th July 2025
28AQI
25th July 2025
30AQI
26th July 2025
32AQI
27th July 2025
34AQI
28th July 2025
26AQI
29th July 2025
31AQI
30th July 2025
37AQI
31st July 2025
44AQI
1st August 2025
57AQI
2nd August 2025
58AQI
3rd August 2025
59AQI
4th August 2025
56AQI
5th August 2025
55AQI
6th August 2025
57AQI
7th August 2025
53AQI
8th August 2025
47AQI
9th August 2025
49AQI
10th August 2025
44AQI
11th August 2025
42AQI
12th August 2025
39AQI
13th August 2025
38AQI
14th August 2025
35AQI
15th August 2025
33AQI
16th August 2025
30AQI
17th August 2025
28AQI
18th August 2025
26AQI
19th August 2025
28AQI
20th August 2025
29AQI
21st August 2025
29AQI
22nd August 2025
29AQI
23rd August 2025
30AQI
24th August 2025
30AQI
25th August 2025
30AQI
26th August 2025
32AQI
27th August 2025
30AQI
28th August 2025
34AQI
29th August 2025
34AQI
30th August 2025
31AQI
31st August 2025
30AQI
1st September 2025
30AQI
2nd September 2025
34AQI
3rd September 2025
31AQI
4th September 2025
38AQI
5th September 2025
33AQI
6th September 2025
31AQI
7th September 2025
36AQI
8th September 2025
31AQI
9th September 2025
33AQI
10th September 2025
32AQI
11th September 2025
32AQI
12th September 2025
32AQI
13th September 2025
28AQI
14th September 2025
26AQI
15th September 2025
25AQI
16th September 2025
25AQI
17th September 2025
30AQI
18th September 2025
27AQI
19th September 2025
25AQI
20th September 2025
27AQI
21st September 2025
33AQI
22nd September 2025
28AQI
23rd September 2025
30AQI
24th September 2025
36AQI
25th September 2025
46AQI
26th September 2025
32AQI
27th September 2025
30AQI
28th September 2025
26AQI
29th September 2025
45AQI
30th September 2025
40AQI
1st October 2025
30AQI
2nd October 2025
36AQI
3rd October 2025
45AQI
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

72AQI

48AQI

50AQI

61AQI

40AQI

34AQI

35AQI

39AQI

32AQI

37AQI

No. of days

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

202545AQI

1
29
1
16
12
17
14
9
17
4
22
9
29
1
31
24
7
30
3
182
89
5

Highest AQI recorded in

January

72AQI

Lowest AQI recorded in

September

32AQI

202444AQI

4
17
10
7
8
15
13
5
21
2
28
2
31
31
28
1
17
13
1
14
16
1
30
206
108
1

Highest AQI recorded in

December

68AQI

Lowest AQI recorded in

July

29AQI

202346AQI

3
7
1
4
8
1
1
1
2
1
5
2
9
2
3
1
2
21
9
51
31
1

Highest AQI recorded in

March

63AQI

Lowest AQI recorded in

July

19AQI

202241AQI

19
10
15
5
20
11
13
4
29
2
29
1
15
2
1
2
7
12
13
20
3
7
6
182
64

Highest AQI recorded in

September

57AQI

Lowest AQI recorded in

August

13AQI

202143AQI

4
25
2
10
18
20
11
25
5
30
1
21
9
28
3
27
4
28
2
29
2
12
18
10
20
1
244
118
3

Highest AQI recorded in

January

68AQI

Lowest AQI recorded in

September

26AQI

202040AQI

7
7
6
12
4
27
1
31
30
1
28
2
13
18
10
17
3
9
22
174
71
3

Highest AQI recorded in

December

61AQI

Lowest AQI recorded in

August

27AQI

Most & Least Polluted Years Over the Last 6 Years

Most Polluted Year Recorded
2023(Avg.)
46AQI
Least Polluted Year Recorded
2020(Avg.)
40AQI

Haitang Bay's annual 2025 AQI (45) shows an average percentage change of 6.07% (worsened AQI) compared to previous years: 2020 (40), 2021 (43), 2022 (41), 2023 (46), 2024 (44).