City Environmental Building Station, Jiaji, 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
City Environmental Building Station, Jiaji, Hainan, China
2021
2022
2023
2024
2025
AQI
.
Days
AQI Trends: Highest and Lowest
Highest AQI recorded on
11th Sep 2022
129AQILowest AQI recorded on
8th Sep 2022
11AQISame Day Analysis (20th September ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 3rd highest AQI at 38 of Good air quality, showing improvement over 2022 and 2021 on the same day.
Download 2024 Annual Data
World Air Quality Report
Day & Night AQI Trend: 20th Sep - 21st Sep 2025
City Environmental Building Station, Jiaji, Hainan, China
AQI
Day
Night
.
6 AM20th Sep 2025
6 PM
5 AM21st Sep 2025
Day time
Avg. Highest Time
1PM20th Sep
53AQI
Avg. Lowest Time
4PM20th Sep
31AQI
Night time
Avg. Highest Time
7PM20th Sep
48AQI
Avg. Lowest Time
1AM21st Sep
32AQI
In the last 24 hours,
City Environmental Building Station's AQI reached its highest point of 53 at 1 PM during the Day, while the lowest point, 31, was recorded at 4 PM during the Day between 20th Sep and 21st Sep 2025.
Day & Night AQI Trend : Aug - Sep 2025
City Environmental Building Station, Jiaji, 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 2025366 AMAQI
22nd Aug 2025377 AMAQI
22nd Aug 2025268 AMAQI
22nd Aug 2025219 AMAQI
22nd Aug 20253010 AMAQI
22nd Aug 20252911 AMAQI
22nd Aug 20253912 PMAQI
22nd Aug 2025291 PMAQI
22nd Aug 2025302 PMAQI
22nd Aug 2025303 PMAQI
22nd Aug 2025304 PMAQI
22nd Aug 2025425 PMAQI
22nd Aug 2025366 PMAQI
22nd Aug 2025387 PMAQI
22nd Aug 2025408 PMAQI
22nd Aug 2025419 PMAQI
22nd Aug 20253510 PMAQI
22nd Aug 20253511 PMAQI
23rd Aug 20253712 AMAQI
23rd Aug 2025391 AMAQI
23rd Aug 2025382 AMAQI
23rd Aug 2025363 AMAQI
23rd Aug 2025364 AMAQI
23rd Aug 2025365 AMAQI
28°C25/31°C
23rd Aug 2025366 AMAQI
23rd Aug 2025347 AMAQI
23rd Aug 2025388 AMAQI
23rd Aug 2025429 AMAQI
23rd Aug 20252910 AMAQI
23rd Aug 20253111 AMAQI
23rd Aug 20254012 PMAQI
23rd Aug 2025271 PMAQI
23rd Aug 2025302 PMAQI
23rd Aug 2025303 PMAQI
23rd Aug 2025314 PMAQI
23rd Aug 2025295 PMAQI
23rd Aug 2025286 PMAQI
23rd Aug 2025407 PMAQI
23rd Aug 2025398 PMAQI
23rd Aug 2025399 PMAQI
23rd Aug 20254010 PMAQI
23rd Aug 20253811 PMAQI
24th Aug 20253812 AMAQI
24th Aug 2025371 AMAQI
24th Aug 2025382 AMAQI
24th Aug 2025403 AMAQI
24th Aug 2025384 AMAQI
24th Aug 2025385 AMAQI
28°C24/33°C
24th Aug 2025396 AMAQI
24th Aug 2025377 AMAQI
24th Aug 2025368 AMAQI
24th Aug 2025369 AMAQI
24th Aug 20253210 AMAQI
24th Aug 20253111 AMAQI
24th Aug 20252712 PMAQI
24th Aug 2025301 PMAQI
24th Aug 2025282 PMAQI
24th Aug 2025323 PMAQI
24th Aug 2025344 PMAQI
24th Aug 2025335 PMAQI
24th Aug 2025306 PMAQI
24th Aug 2025367 PMAQI
24th Aug 2025358 PMAQI
24th Aug 2025379 PMAQI
24th Aug 20253710 PMAQI
24th Aug 20253711 PMAQI
25th Aug 20253412 AMAQI
25th Aug 2025381 AMAQI
25th Aug 2025352 AMAQI
25th Aug 2025363 AMAQI
25th Aug 2025404 AMAQI
25th Aug 2025415 AMAQI
26°C24/27°C
25th Aug 2025406 AMAQI
25th Aug 2025387 AMAQI
25th Aug 2025288 AMAQI
25th Aug 2025289 AMAQI
25th Aug 20252810 AMAQI
25th Aug 20252411 AMAQI
25th Aug 20252412 PMAQI
25th Aug 2025261 PMAQI
25th Aug 2025242 PMAQI
25th Aug 2025273 PMAQI
25th Aug 2025224 PMAQI
25th Aug 2025275 PMAQI
25th Aug 2025306 PMAQI
25th Aug 2025367 PMAQI
25th Aug 2025348 PMAQI
25th Aug 2025349 PMAQI
25th Aug 20253310 PMAQI
25th Aug 20253211 PMAQI
26th Aug 20253412 AMAQI
26th Aug 2025371 AMAQI
26th Aug 2025382 AMAQI
26th Aug 2025373 AMAQI
26th Aug 2025374 AMAQI
26th Aug 2025375 AMAQI
26°C25/28°C
26th Aug 2025386 AMAQI
26th Aug 2025377 AMAQI
26th Aug 2025268 AMAQI
26th Aug 2025239 AMAQI
26th Aug 20252910 AMAQI
26th Aug 20252811 AMAQI
26th Aug 20253012 PMAQI
26th Aug 2025321 PMAQI
26th Aug 2025282 PMAQI
26th Aug 2025303 PMAQI
26th Aug 2025234 PMAQI
26th Aug 2025225 PMAQI
26th Aug 2025286 PMAQI
26th Aug 2025347 PMAQI
26th Aug 2025308 PMAQI
26th Aug 2025329 PMAQI
26th Aug 20253110 PMAQI
26th Aug 20253011 PMAQI
27th Aug 20253312 AMAQI
27th Aug 2025371 AMAQI
27th Aug 2025392 AMAQI
27th Aug 2025383 AMAQI
27th Aug 2025364 AMAQI
27th Aug 2025365 AMAQI
27°C25/29°C
27th Aug 2025366 AMAQI
27th Aug 2025357 AMAQI
27th Aug 2025348 AMAQI
27th Aug 2025409 AMAQI
27th Aug 20254910 AMAQI
27th Aug 20255411 AMAQI
27th Aug 20254712 PMAQI
27th Aug 2025301 PMAQI
27th Aug 2025322 PMAQI
27th Aug 2025293 PMAQI
27th Aug 2025324 PMAQI
27th Aug 2025285 PMAQI
27th Aug 2025306 PMAQI
27th Aug 2025337 PMAQI
27th Aug 2025328 PMAQI
27th Aug 2025429 PMAQI
27th Aug 20253410 PMAQI
27th Aug 20253211 PMAQI
28th Aug 20253612 AMAQI
28th Aug 2025361 AMAQI
28th Aug 2025372 AMAQI
28th Aug 2025383 AMAQI
28th Aug 2025404 AMAQI
28th Aug 2025385 AMAQI
27°C25/30°C
28th Aug 2025386 AMAQI
28th Aug 2025387 AMAQI
28th Aug 2025428 AMAQI
28th Aug 2025479 AMAQI
28th Aug 20254310 AMAQI
28th Aug 20253611 AMAQI
28th Aug 20253112 PMAQI
28th Aug 2025341 PMAQI
28th Aug 2025272 PMAQI
28th Aug 2025363 PMAQI
28th Aug 2025464 PMAQI
28th Aug 2025425 PMAQI
28th Aug 2025446 PMAQI
28th Aug 2025387 PMAQI
28th Aug 2025338 PMAQI
28th Aug 2025359 PMAQI
28th Aug 20253310 PMAQI
28th Aug 20253411 PMAQI
29th Aug 20253412 AMAQI
29th Aug 2025421 AMAQI
29th Aug 2025452 AMAQI
29th Aug 2025433 AMAQI
29th Aug 2025454 AMAQI
29th Aug 2025445 AMAQI
26°C24/31°C
29th Aug 2025466 AMAQI
29th Aug 2025467 AMAQI
29th Aug 2025528 AMAQI
29th Aug 2025309 AMAQI
29th Aug 20253610 AMAQI
29th Aug 20253011 AMAQI
29th Aug 20253512 PMAQI
29th Aug 2025401 PMAQI
29th Aug 2025362 PMAQI
29th Aug 2025373 PMAQI
29th Aug 2025364 PMAQI
29th Aug 2025365 PMAQI
29th Aug 2025466 PMAQI
29th Aug 2025487 PMAQI
29th Aug 2025438 PMAQI
29th Aug 2025369 PMAQI
29th Aug 20253810 PMAQI
29th Aug 20253811 PMAQI
30th Aug 20254012 AMAQI
30th Aug 2025451 AMAQI
30th Aug 2025442 AMAQI
30th Aug 2025433 AMAQI
30th Aug 2025414 AMAQI
30th Aug 2025425 AMAQI
26°C24/28°C
30th Aug 2025416 AMAQI
30th Aug 2025427 AMAQI
30th Aug 2025218 AMAQI
30th Aug 2025219 AMAQI
30th Aug 20252410 AMAQI
30th Aug 20253211 AMAQI
30th Aug 20253312 PMAQI
30th Aug 2025261 PMAQI
30th Aug 2025242 PMAQI
30th Aug 2025293 PMAQI
30th Aug 2025254 PMAQI
30th Aug 2025285 PMAQI
30th Aug 2025276 PMAQI
30th Aug 2025347 PMAQI
30th Aug 2025408 PMAQI
30th Aug 2025389 PMAQI
30th Aug 20253510 PMAQI
30th Aug 20253611 PMAQI
31st Aug 20253912 AMAQI
31st Aug 2025411 AMAQI
31st Aug 2025482 AMAQI
31st Aug 2025443 AMAQI
31st Aug 2025404 AMAQI
31st Aug 2025405 AMAQI
27°C26/29°C
31st Aug 2025406 AMAQI
31st Aug 2025407 AMAQI
31st Aug 2025268 AMAQI
31st Aug 2025189 AMAQI
31st Aug 20252210 AMAQI
31st Aug 20252511 AMAQI
31st Aug 20253212 PMAQI
31st Aug 2025291 PMAQI
31st Aug 2025282 PMAQI
31st Aug 2025303 PMAQI
31st Aug 2025294 PMAQI
31st Aug 2025285 PMAQI
31st Aug 2025326 PMAQI
31st Aug 2025397 PMAQI
31st Aug 2025328 PMAQI
31st Aug 2025329 PMAQI
31st Aug 20253610 PMAQI
31st Aug 20254111 PMAQI
1st Sep 20253512 AMAQI
1st Sep 2025381 AMAQI
1st Sep 2025422 AMAQI
1st Sep 2025423 AMAQI
1st Sep 2025374 AMAQI
1st Sep 2025425 AMAQI
27°C25/30°C
1st Sep 2025476 AMAQI
1st Sep 2025447 AMAQI
1st Sep 2025238 AMAQI
1st Sep 2025329 AMAQI
1st Sep 20253210 AMAQI
1st Sep 20252611 AMAQI
1st Sep 20252412 PMAQI
1st Sep 2025281 PMAQI
1st Sep 2025262 PMAQI
1st Sep 2025243 PMAQI
1st Sep 2025264 PMAQI
1st Sep 2025255 PMAQI
1st Sep 2025366 PMAQI
1st Sep 2025307 PMAQI
1st Sep 2025368 PMAQI
1st Sep 2025329 PMAQI
1st Sep 20253310 PMAQI
1st Sep 20253611 PMAQI
2nd Sep 20253612 AMAQI
2nd Sep 2025401 AMAQI
2nd Sep 2025412 AMAQI
2nd Sep 2025413 AMAQI
2nd Sep 2025394 AMAQI
2nd Sep 2025405 AMAQI
27°C25/30°C
2nd Sep 2025386 AMAQI
2nd Sep 2025447 AMAQI
2nd Sep 2025358 AMAQI
2nd Sep 2025449 AMAQI
2nd Sep 20253010 AMAQI
2nd Sep 20252111 AMAQI
2nd Sep 20252212 PMAQI
2nd Sep 2025291 PMAQI
2nd Sep 2025292 PMAQI
2nd Sep 2025293 PMAQI
2nd Sep 2025284 PMAQI
2nd Sep 2025205 PMAQI
2nd Sep 2025266 PMAQI
2nd Sep 2025347 PMAQI
2nd Sep 2025338 PMAQI
2nd Sep 2025389 PMAQI
2nd Sep 20254010 PMAQI
2nd Sep 20253911 PMAQI
3rd Sep 20254012 AMAQI
3rd Sep 2025361 AMAQI
3rd Sep 2025442 AMAQI
3rd Sep 2025433 AMAQI
3rd Sep 2025404 AMAQI
3rd Sep 2025385 AMAQI
27°C24/31°C
3rd Sep 2025386 AMAQI
3rd Sep 2025387 AMAQI
3rd Sep 2025258 AMAQI
3rd Sep 2025309 AMAQI
3rd Sep 20252910 AMAQI
3rd Sep 20253811 AMAQI
3rd Sep 20252712 PMAQI
3rd Sep 2025321 PMAQI
3rd Sep 2025312 PMAQI
3rd Sep 2025283 PMAQI
3rd Sep 2025254 PMAQI
3rd Sep 2025315 PMAQI
3rd Sep 2025276 PMAQI
3rd Sep 2025277 PMAQI
3rd Sep 2025388 PMAQI
3rd Sep 2025349 PMAQI
3rd Sep 20253910 PMAQI
3rd Sep 20253411 PMAQI
4th Sep 20253612 AMAQI
4th Sep 2025431 AMAQI
4th Sep 2025422 AMAQI
4th Sep 2025403 AMAQI
4th Sep 2025384 AMAQI
4th Sep 2025385 AMAQI
28°C24/31°C
4th Sep 2025396 AMAQI
4th Sep 2025387 AMAQI
4th Sep 2025418 AMAQI
4th Sep 2025349 AMAQI
4th Sep 20253110 AMAQI
4th Sep 20254611 AMAQI
4th Sep 20253012 PMAQI
4th Sep 2025311 PMAQI
4th Sep 2025362 PMAQI
4th Sep 2025243 PMAQI
4th Sep 2025224 PMAQI
4th Sep 2025185 PMAQI
4th Sep 2025216 PMAQI
4th Sep 2025357 PMAQI
4th Sep 2025448 PMAQI
4th Sep 2025389 PMAQI
4th Sep 20252810 PMAQI
4th Sep 20252711 PMAQI
5th Sep 20252612 AMAQI
5th Sep 2025341 AMAQI
5th Sep 2025372 AMAQI
5th Sep 2025363 AMAQI
5th Sep 2025384 AMAQI
5th Sep 2025425 AMAQI
28°C25/31°C
5th Sep 2025406 AMAQI
5th Sep 2025397 AMAQI
5th Sep 2025308 AMAQI
5th Sep 2025389 AMAQI
5th Sep 20252310 AMAQI
5th Sep 20252611 AMAQI
5th Sep 20253512 PMAQI
5th Sep 2025371 PMAQI
5th Sep 2025372 PMAQI
5th Sep 2025333 PMAQI
5th Sep 2025224 PMAQI
5th Sep 2025335 PMAQI
5th Sep 2025286 PMAQI
5th Sep 2025267 PMAQI
5th Sep 2025318 PMAQI
5th Sep 2025339 PMAQI
5th Sep 20253210 PMAQI
5th Sep 20253011 PMAQI
6th Sep 20252912 AMAQI
6th Sep 2025321 AMAQI
6th Sep 2025362 AMAQI
6th Sep 2025343 AMAQI
6th Sep 2025344 AMAQI
6th Sep 2025355 AMAQI
28°C25/31°C
6th Sep 2025366 AMAQI
6th Sep 2025357 AMAQI
6th Sep 2025258 AMAQI
6th Sep 2025449 AMAQI
6th Sep 20253410 AMAQI
6th Sep 20252711 AMAQI
6th Sep 20252812 PMAQI
6th Sep 2025271 PMAQI
6th Sep 2025242 PMAQI
6th Sep 2025253 PMAQI
6th Sep 2025224 PMAQI
6th Sep 2025225 PMAQI
6th Sep 2025236 PMAQI
6th Sep 2025257 PMAQI
6th Sep 2025288 PMAQI
6th Sep 2025419 PMAQI
6th Sep 20253010 PMAQI
6th Sep 20253211 PMAQI
7th Sep 20253412 AMAQI
7th Sep 2025341 AMAQI
7th Sep 2025342 AMAQI
7th Sep 2025343 AMAQI
7th Sep 2025314 AMAQI
7th Sep 2025325 AMAQI
28°C25/31°C
7th Sep 2025306 AMAQI
7th Sep 2025327 AMAQI
7th Sep 2025468 AMAQI
7th Sep 2025479 AMAQI
7th Sep 20254710 AMAQI
7th Sep 20254611 AMAQI
7th Sep 20254012 PMAQI
7th Sep 2025581 PMAQI
7th Sep 2025562 PMAQI
7th Sep 2025513 PMAQI
7th Sep 2025554 PMAQI
7th Sep 2025455 PMAQI
7th Sep 2025516 PMAQI
7th Sep 2025467 PMAQI
7th Sep 2025518 PMAQI
7th Sep 2025479 PMAQI
7th Sep 20254810 PMAQI
7th Sep 20254611 PMAQI
8th Sep 20254312 AMAQI
8th Sep 2025351 AMAQI
8th Sep 2025342 AMAQI
8th Sep 2025373 AMAQI
8th Sep 2025384 AMAQI
8th Sep 2025395 AMAQI
27°C25/30°C
8th Sep 2025386 AMAQI
8th Sep 2025387 AMAQI
8th Sep 2025398 AMAQI
8th Sep 2025419 AMAQI
8th Sep 20253710 AMAQI
8th Sep 20254011 AMAQI
8th Sep 20253612 PMAQI
8th Sep 2025401 PMAQI
8th Sep 2025362 PMAQI
8th Sep 2025293 PMAQI
8th Sep 2025334 PMAQI
8th Sep 2025405 PMAQI
8th Sep 2025386 PMAQI
8th Sep 2025407 PMAQI
8th Sep 2025388 PMAQI
8th Sep 2025429 PMAQI
8th Sep 20253610 PMAQI
8th Sep 20253911 PMAQI
9th Sep 20253812 AMAQI
9th Sep 2025391 AMAQI
9th Sep 2025382 AMAQI
9th Sep 2025383 AMAQI
9th Sep 2025414 AMAQI
9th Sep 2025405 AMAQI
27°C24/30°C
9th Sep 2025386 AMAQI
9th Sep 2025387 AMAQI
9th Sep 2025268 AMAQI
9th Sep 2025329 AMAQI
9th Sep 20253610 AMAQI
9th Sep 20252911 AMAQI
9th Sep 20252812 PMAQI
9th Sep 2025301 PMAQI
9th Sep 2025302 PMAQI
9th Sep 2025283 PMAQI
9th Sep 2025324 PMAQI
9th Sep 2025355 PMAQI
9th Sep 2025336 PMAQI
9th Sep 2025377 PMAQI
9th Sep 2025358 PMAQI
9th Sep 2025369 PMAQI
9th Sep 20253710 PMAQI
9th Sep 20253211 PMAQI
10th Sep 20253712 AMAQI
10th Sep 2025401 AMAQI
10th Sep 2025412 AMAQI
10th Sep 2025393 AMAQI
10th Sep 2025374 AMAQI
10th Sep 2025365 AMAQI
27°C25/32°C
10th Sep 2025366 AMAQI
10th Sep 2025387 AMAQI
10th Sep 2025268 AMAQI
10th Sep 2025229 AMAQI
10th Sep 20253010 AMAQI
10th Sep 20252611 AMAQI
10th Sep 20252712 PMAQI
10th Sep 2025271 PMAQI
10th Sep 2025292 PMAQI
10th Sep 2025263 PMAQI
10th Sep 2025304 PMAQI
10th Sep 2025295 PMAQI
10th Sep 2025266 PMAQI
10th Sep 2025327 PMAQI
10th Sep 2025358 PMAQI
10th Sep 2025389 PMAQI
10th Sep 20253510 PMAQI
10th Sep 20253411 PMAQI
11th Sep 20253612 AMAQI
11th Sep 2025381 AMAQI
11th Sep 2025382 AMAQI
11th Sep 2025363 AMAQI
11th Sep 2025364 AMAQI
11th Sep 2025345 AMAQI
27°C25/32°C
11th Sep 2025356 AMAQI
11th Sep 2025367 AMAQI
11th Sep 2025238 AMAQI
11th Sep 2025279 AMAQI
11th Sep 20253310 AMAQI
11th Sep 20253411 AMAQI
11th Sep 20252612 PMAQI
11th Sep 2025281 PMAQI
11th Sep 2025332 PMAQI
11th Sep 2025283 PMAQI
11th Sep 2025254 PMAQI
11th Sep 2025235 PMAQI
11th Sep 2025326 PMAQI
11th Sep 2025307 PMAQI
11th Sep 2025318 PMAQI
11th Sep 2025339 PMAQI
11th Sep 20253210 PMAQI
11th Sep 20253011 PMAQI
12th Sep 20253312 AMAQI
12th Sep 2025361 AMAQI
12th Sep 2025382 AMAQI
12th Sep 2025353 AMAQI
12th Sep 2025344 AMAQI
12th Sep 2025355 AMAQI
27°C24/31°C
12th Sep 2025346 AMAQI
12th Sep 2025347 AMAQI
12th Sep 2025308 AMAQI
12th Sep 2025339 AMAQI
12th Sep 20252610 AMAQI
12th Sep 20252411 AMAQI
12th Sep 20252212 PMAQI
12th Sep 2025251 PMAQI
12th Sep 2025262 PMAQI
12th Sep 2025213 PMAQI
12th Sep 2025194 PMAQI
12th Sep 2025235 PMAQI
12th Sep 2025316 PMAQI
12th Sep 2025247 PMAQI
12th Sep 2025338 PMAQI
12th Sep 2025329 PMAQI
12th Sep 20253210 PMAQI
12th Sep 20253111 PMAQI
13th Sep 20253212 AMAQI
13th Sep 2025371 AMAQI
13th Sep 2025352 AMAQI
13th Sep 2025343 AMAQI
13th Sep 2025354 AMAQI
13th Sep 2025355 AMAQI
27°C24/31°C
13th Sep 2025346 AMAQI
13th Sep 2025347 AMAQI
13th Sep 2025288 AMAQI
13th Sep 2025329 AMAQI
13th Sep 20253410 AMAQI
13th Sep 20252511 AMAQI
13th Sep 20252812 PMAQI
13th Sep 2025221 PMAQI
13th Sep 2025302 PMAQI
13th Sep 2025253 PMAQI
13th Sep 2025234 PMAQI
13th Sep 2025305 PMAQI
13th Sep 2025216 PMAQI
13th Sep 2025337 PMAQI
13th Sep 2025338 PMAQI
13th Sep 2025319 PMAQI
13th Sep 20252910 PMAQI
13th Sep 20253011 PMAQI
14th Sep 20252612 AMAQI
14th Sep 2025331 AMAQI
14th Sep 2025352 AMAQI
14th Sep 2025343 AMAQI
14th Sep 2025344 AMAQI
14th Sep 2025335 AMAQI
27°C25/30°C
14th Sep 2025346 AMAQI
14th Sep 2025357 AMAQI
14th Sep 2025298 AMAQI
14th Sep 2025209 AMAQI
14th Sep 20252910 AMAQI
14th Sep 20252711 AMAQI
14th Sep 20252312 PMAQI
14th Sep 2025201 PMAQI
14th Sep 2025182 PMAQI
14th Sep 2025223 PMAQI
14th Sep 2025204 PMAQI
14th Sep 2025235 PMAQI
14th Sep 2025196 PMAQI
14th Sep 2025267 PMAQI
14th Sep 2025268 PMAQI
14th Sep 2025339 PMAQI
14th Sep 20252810 PMAQI
14th Sep 20252911 PMAQI
15th Sep 20253212 AMAQI
15th Sep 2025331 AMAQI
15th Sep 2025332 AMAQI
15th Sep 2025323 AMAQI
15th Sep 2025324 AMAQI
15th Sep 2025325 AMAQI
27°C24/31°C
15th Sep 2025326 AMAQI
15th Sep 2025327 AMAQI
15th Sep 2025348 AMAQI
15th Sep 2025329 AMAQI
15th Sep 20254210 AMAQI
15th Sep 20253811 AMAQI
15th Sep 20252612 PMAQI
15th Sep 2025221 PMAQI
15th Sep 2025202 PMAQI
15th Sep 2025213 PMAQI
15th Sep 2025184 PMAQI
15th Sep 2025175 PMAQI
15th Sep 2025206 PMAQI
15th Sep 2025287 PMAQI
15th Sep 2025328 PMAQI
15th Sep 2025289 PMAQI
15th Sep 20252710 PMAQI
15th Sep 20253011 PMAQI
16th Sep 20252912 AMAQI
16th Sep 2025321 AMAQI
16th Sep 2025342 AMAQI
16th Sep 2025323 AMAQI
16th Sep 2025324 AMAQI
16th Sep 2025335 AMAQI
27°C24/31°C
16th Sep 2025336 AMAQI
16th Sep 2025337 AMAQI
16th Sep 2025248 AMAQI
16th Sep 2025249 AMAQI
16th Sep 20252610 AMAQI
16th Sep 20252711 AMAQI
16th Sep 20252712 PMAQI
16th Sep 2025281 PMAQI
16th Sep 2025202 PMAQI
16th Sep 2025193 PMAQI
16th Sep 2025194 PMAQI
16th Sep 2025175 PMAQI
16th Sep 2025206 PMAQI
16th Sep 2025257 PMAQI
16th Sep 2025288 PMAQI
16th Sep 2025349 PMAQI
16th Sep 20253010 PMAQI
16th Sep 20253011 PMAQI
17th Sep 20253012 AMAQI
17th Sep 2025331 AMAQI
17th Sep 2025322 AMAQI
17th Sep 2025323 AMAQI
17th Sep 2025324 AMAQI
17th Sep 2025315 AMAQI
26°C24/30°C
17th Sep 2025316 AMAQI
17th Sep 2025327 AMAQI
17th Sep 2025288 AMAQI
17th Sep 2025279 AMAQI
17th Sep 20252810 AMAQI
17th Sep 20252011 AMAQI
17th Sep 20252112 PMAQI
17th Sep 2025201 PMAQI
17th Sep 2025222 PMAQI
17th Sep 2025173 PMAQI
17th Sep 2025214 PMAQI
17th Sep 2025275 PMAQI
17th Sep 2025246 PMAQI
17th Sep 2025317 PMAQI
17th Sep 2025298 PMAQI
17th Sep 2025289 PMAQI
17th Sep 20252910 PMAQI
17th Sep 20252811 PMAQI
18th Sep 20253012 AMAQI
18th Sep 2025311 AMAQI
18th Sep 2025332 AMAQI
18th Sep 2025323 AMAQI
18th Sep 2025314 AMAQI
18th Sep 2025315 AMAQI
27°C24/31°C
18th Sep 2025306 AMAQI
18th Sep 2025327 AMAQI
18th Sep 2025288 AMAQI
18th Sep 2025329 AMAQI
18th Sep 20252810 AMAQI
18th Sep 20252611 AMAQI
18th Sep 20252512 PMAQI
18th Sep 2025301 PMAQI
18th Sep 2025252 PMAQI
18th Sep 2025243 PMAQI
18th Sep 2025224 PMAQI
18th Sep 2025235 PMAQI
18th Sep 2025286 PMAQI
18th Sep 2025267 PMAQI
18th Sep 2025318 PMAQI
18th Sep 2025319 PMAQI
18th Sep 20253010 PMAQI
18th Sep 20253211 PMAQI
19th Sep 20253112 AMAQI
19th Sep 2025301 AMAQI
19th Sep 2025322 AMAQI
19th Sep 2025323 AMAQI
19th Sep 2025314 AMAQI
19th Sep 2025315 AMAQI
26°C24/28°C
19th Sep 2025306 AMAQI
19th Sep 2025307 AMAQI
19th Sep 2025268 AMAQI
19th Sep 2025279 AMAQI
19th Sep 20252810 AMAQI
19th Sep 20252811 AMAQI
19th Sep 20252912 PMAQI
19th Sep 2025241 PMAQI
19th Sep 2025242 PMAQI
19th Sep 2025243 PMAQI
19th Sep 2025204 PMAQI
19th Sep 2025185 PMAQI
19th Sep 2025216 PMAQI
19th Sep 2025247 PMAQI
19th Sep 2025278 PMAQI
19th Sep 2025309 PMAQI
19th Sep 20252810 PMAQI
19th Sep 20253111 PMAQI
20th Sep 20253312 AMAQI
20th Sep 2025291 AMAQI
20th Sep 2025322 AMAQI
20th Sep 2025333 AMAQI
20th Sep 2025344 AMAQI
20th Sep 2025355 AMAQI
27°C24/32°C
20th Sep 2025346 AMAQI
20th Sep 2025347 AMAQI
20th Sep 2025468 AMAQI
20th Sep 2025519 AMAQI
20th Sep 20255110 AMAQI
20th Sep 20254911 AMAQI
20th Sep 20255112 PMAQI
20th Sep 2025531 PMAQI
20th Sep 2025382 PMAQI
20th Sep 2025313 PMAQI
20th Sep 2025314 PMAQI
20th Sep 2025345 PMAQI
20th Sep 2025406 PMAQI
20th Sep 2025487 PMAQI
20th Sep 2025378 PMAQI
20th Sep 2025429 PMAQI
20th Sep 20254410 PMAQI
20th Sep 20254811 PMAQI
21st Sep 20253712 AMAQI
21st Sep 2025321 AMAQI
21st Sep 2025342 AMAQI
21st Sep 2025333 AMAQI
21st Sep 2025344 AMAQI
21st Sep 2025345 AMAQI
28°C24/33°C
21st Sep 2025356 AMAQI
6 AM21st Sep 2025367 AMAQI
21st Sep 2025528 AMAQI
21st Sep 2025409 AMAQI
21st Sep 20253710 AMAQI
21st Sep 20252411 AMAQI
21st Sep 20252112 PMAQI
12 PM21st Sep 2025261 PMAQI
21st Sep 2025282 PMAQI
21st Sep 2025223 PMAQI
21st Sep 2025214 PMAQI
21st Sep 2025225 PMAQI
21st Sep 2025216 PMAQI
6 PM21st Sep 2025297 PMAQI
21st Sep 2025378 PMAQI
21st Sep 2025419 PMAQI
21st Sep 20254310 PMAQI
21st Sep 20252911 PMAQI
12 AM
5 AM
--°C/°C
Day time
Avg. Highest Time
6 AM - 7 AM
37AQI
2 hours / Day
60 hours / Month
Avg. Lowest Time
4 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. 37), while the lowest AQI was between 4 PM to 4 PM (Avg. 27).
Night time
Avg. Highest Time
2 AM - 5 AM
37AQI
4 hours / Day
120 hours / Month
Avg. Lowest Time
7 PM
33AQI
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. 37), while the lowest AQI was between 7 PM to 7 PM (Avg. 33).
2025 Days Vs Air Quality
City Environmental Building Station, Jiaji, Hainan, China
2025
53%
140
43%
112
4%
11
Total number of days with different AQI categories in last 264 days in 2025 (101 days remaining)
Good
140 DaysModerate
112 DaysPoor
11 DaysUnhealthy
0 DaysSevere
0 DaysHazardous
0 DaysUnder WHO’s Safe Air Quality Limits: 53%
Health Risk Level:
Considerable
In 2025, 53% of 264 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
City Environmental Building Station, Jiaji, 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
117AQI
2nd January 2025
95AQI
95AQI
3rd January 2025
106AQI
106AQI
4th January 2025
93AQI
93AQI
5th January 2025
108AQI
108AQI
6th January 2025
114AQI
114AQI
7th January 2025
91AQI
91AQI
8th January 2025
94AQI
94AQI
9th January 2025
114AQI
114AQI
10th January 2025
109AQI
109AQI
11th January 2025
91AQI
91AQI
12th January 2025
84AQI
84AQI
13th January 2025
77AQI
77AQI
14th January 2025
75AQI
75AQI
15th January 2025
87AQI
87AQI
16th January 2025
95AQI
95AQI
17th January 2025
88AQI
88AQI
18th January 2025
87AQI
87AQI
19th January 2025
92AQI
92AQI
20th January 2025
89AQI
89AQI
21st January 2025
79AQI
79AQI
22nd January 2025
90AQI
90AQI
23rd January 2025
77AQI
77AQI
24th January 2025
62AQI
62AQI
25th January 2025
61AQI
61AQI
26th January 2025
57AQI
57AQI
27th January 2025
60AQI
60AQI
28th January 2025
68AQI
68AQI
29th January 2025
94AQI
94AQI
30th January 2025
69AQI
69AQI
31st January 2025
63AQI
63AQI
1st February 2025
46AQI
46AQI
2nd February 2025
44AQI
44AQI
3rd February 2025
46AQI
46AQI
4th February 2025
52AQI
52AQI
5th February 2025
54AQI
54AQI
6th February 2025
55AQI
55AQI
7th February 2025
70AQI
70AQI
8th February 2025
60AQI
60AQI
9th February 2025
70AQI
70AQI
10th February 2025
60AQI
60AQI
11th February 2025
61AQI
61AQI
12th February 2025
47AQI
47AQI
13th February 2025
63AQI
63AQI
14th February 2025
45AQI
45AQI
15th February 2025
67AQI
67AQI
16th February 2025
44AQI
44AQI
17th February 2025
63AQI
63AQI
18th February 2025
80AQI
80AQI
19th February 2025
69AQI
69AQI
20th February 2025
67AQI
67AQI
21st February 2025
59AQI
59AQI
22nd February 2025
48AQI
48AQI
23rd February 2025
50AQI
50AQI
24th February 2025
49AQI
49AQI
25th February 2025
54AQI
54AQI
26th February 2025
73AQI
73AQI
27th February 2025
63AQI
63AQI
28th February 2025
55AQI
55AQI
1st March 2025
57AQI
57AQI
2nd March 2025
52AQI
52AQI
3rd March 2025
56AQI
56AQI
4th March 2025
44AQI
44AQI
5th March 2025
47AQI
47AQI
6th March 2025
29AQI
29AQI
7th March 2025
40AQI
40AQI
8th March 2025
32AQI
32AQI
9th March 2025
58AQI
58AQI
10th March 2025
59AQI
59AQI
11th March 2025
58AQI
58AQI
12th March 2025
50AQI
50AQI
13th March 2025
49AQI
49AQI
14th March 2025
42AQI
42AQI
15th March 2025
56AQI
56AQI
16th March 2025
47AQI
47AQI
17th March 2025
69AQI
69AQI
18th March 2025
73AQI
73AQI
19th March 2025
83AQI
83AQI
20th March 2025
75AQI
75AQI
21st March 2025
80AQI
80AQI
22nd March 2025
77AQI
77AQI
23rd March 2025
76AQI
76AQI
24th March 2025
74AQI
74AQI
25th March 2025
74AQI
74AQI
26th March 2025
55AQI
55AQI
27th March 2025
59AQI
59AQI
28th March 2025
56AQI
56AQI
29th March 2025
53AQI
53AQI
30th March 2025
30AQI
30AQI
31st March 2025
33AQI
33AQI
1st April 2025
42AQI
42AQI
2nd April 2025
59AQI
59AQI
3rd April 2025
51AQI
51AQI
4th April 2025
54AQI
54AQI
5th April 2025
61AQI
61AQI
6th April 2025
46AQI
46AQI
7th April 2025
61AQI
61AQI
8th April 2025
54AQI
54AQI
9th April 2025
62AQI
62AQI
10th April 2025
59AQI
59AQI
11th April 2025
58AQI
58AQI
12th April 2025
58AQI
58AQI
13th April 2025
127AQI
127AQI
14th April 2025
126AQI
126AQI
15th April 2025
119AQI
119AQI
16th April 2025
102AQI
102AQI
17th April 2025
101AQI
101AQI
18th April 2025
75AQI
75AQI
19th April 2025
61AQI
61AQI
20th April 2025
60AQI
60AQI
21st April 2025
57AQI
57AQI
22nd April 2025
60AQI
60AQI
23rd April 2025
53AQI
53AQI
24th April 2025
57AQI
57AQI
25th April 2025
50AQI
50AQI
26th April 2025
53AQI
53AQI
27th April 2025
47AQI
47AQI
28th April 2025
54AQI
54AQI
29th April 2025
54AQI
54AQI
30th April 2025
51AQI
51AQI
1st May 2025
54AQI
54AQI
2nd May 2025
58AQI
58AQI
3rd May 2025
58AQI
58AQI
4th May 2025
57AQI
57AQI
5th May 2025
51AQI
51AQI
6th May 2025
56AQI
56AQI
7th May 2025
55AQI
55AQI
8th May 2025
50AQI
50AQI
9th May 2025
50AQI
50AQI
10th May 2025
51AQI
51AQI
11th May 2025
56AQI
56AQI
12th May 2025
59AQI
59AQI
13th May 2025
56AQI
56AQI
14th May 2025
45AQI
45AQI
15th May 2025
36AQI
36AQI
16th May 2025
33AQI
33AQI
17th May 2025
38AQI
38AQI
18th May 2025
39AQI
39AQI
19th May 2025
39AQI
39AQI
20th May 2025
43AQI
43AQI
21st May 2025
43AQI
43AQI
22nd May 2025
39AQI
39AQI
23rd May 2025
32AQI
32AQI
24th May 2025
35AQI
35AQI
25th May 2025
49AQI
49AQI
26th May 2025
79AQI
79AQI
27th May 2025
54AQI
54AQI
28th May 2025
48AQI
48AQI
29th May 2025
39AQI
39AQI
30th May 2025
43AQI
43AQI
31st May 2025
41AQI
41AQI
1st June 2025
46AQI
46AQI
2nd June 2025
45AQI
45AQI
3rd June 2025
47AQI
47AQI
4th June 2025
53AQI
53AQI
5th June 2025
46AQI
46AQI
6th June 2025
42AQI
42AQI
7th June 2025
42AQI
42AQI
8th June 2025
45AQI
45AQI
9th June 2025
51AQI
51AQI
10th June 2025
54AQI
54AQI
11th June 2025
44AQI
44AQI
12th June 2025
33AQI
33AQI
13th June 2025
36AQI
36AQI
14th June 2025
33AQI
33AQI
15th June 2025
42AQI
42AQI
16th June 2025
44AQI
44AQI
17th June 2025
43AQI
43AQI
18th June 2025
37AQI
37AQI
19th June 2025
36AQI
36AQI
20th June 2025
34AQI
34AQI
21st June 2025
34AQI
34AQI
22nd June 2025
38AQI
38AQI
23rd June 2025
30AQI
30AQI
24th June 2025
28AQI
28AQI
25th June 2025
30AQI
30AQI
26th June 2025
27AQI
27AQI
27th June 2025
26AQI
26AQI
28th June 2025
31AQI
31AQI
29th June 2025
32AQI
32AQI
30th June 2025
31AQI
31AQI
1st July 2025
35AQI
35AQI
2nd July 2025
27AQI
27AQI
3rd July 2025
28AQI
28AQI
4th July 2025
29AQI
29AQI
5th July 2025
32AQI
32AQI
6th July 2025
32AQI
32AQI
7th July 2025
36AQI
36AQI
8th July 2025
40AQI
40AQI
9th July 2025
41AQI
41AQI
10th July 2025
42AQI
42AQI
11th July 2025
47AQI
47AQI
12th July 2025
45AQI
45AQI
13th July 2025
48AQI
48AQI
14th July 2025
50AQI
50AQI
15th July 2025
52AQI
52AQI
16th July 2025
50AQI
50AQI
17th July 2025
52AQI
52AQI
18th July 2025
51AQI
51AQI
19th July 2025
46AQI
46AQI
20th July 2025
41AQI
41AQI
21st July 2025
37AQI
37AQI
22nd July 2025
38AQI
38AQI
23rd July 2025
41AQI
41AQI
24th July 2025
37AQI
37AQI
25th July 2025
40AQI
40AQI
26th July 2025
38AQI
38AQI
27th July 2025
47AQI
47AQI
28th July 2025
41AQI
41AQI
29th July 2025
40AQI
40AQI
30th July 2025
43AQI
43AQI
31st July 2025
48AQI
48AQI
1st August 2025
53AQI
53AQI
2nd August 2025
55AQI
55AQI
3rd August 2025
55AQI
55AQI
4th August 2025
56AQI
56AQI
5th August 2025
54AQI
54AQI
6th August 2025
55AQI
55AQI
7th August 2025
53AQI
53AQI
8th August 2025
47AQI
47AQI
9th August 2025
51AQI
51AQI
10th August 2025
45AQI
45AQI
11th August 2025
46AQI
46AQI
12th August 2025
45AQI
45AQI
13th August 2025
44AQI
44AQI
14th August 2025
40AQI
40AQI
15th August 2025
34AQI
34AQI
16th August 2025
32AQI
32AQI
17th August 2025
32AQI
32AQI
18th August 2025
30AQI
30AQI
19th August 2025
31AQI
31AQI
20th August 2025
34AQI
34AQI
21st August 2025
33AQI
33AQI
22nd August 2025
35AQI
35AQI
23rd August 2025
35AQI
35AQI
24th August 2025
35AQI
35AQI
25th August 2025
32AQI
32AQI
26th August 2025
32AQI
32AQI
27th August 2025
36AQI
36AQI
28th August 2025
37AQI
37AQI
29th August 2025
40AQI
40AQI
30th August 2025
35AQI
35AQI
31st August 2025
35AQI
35AQI
1st September 2025
34AQI
34AQI
2nd September 2025
34AQI
34AQI
3rd September 2025
34AQI
34AQI
4th September 2025
34AQI
34AQI
5th September 2025
31AQI
31AQI
6th September 2025
30AQI
30AQI
7th September 2025
43AQI
43AQI
8th September 2025
38AQI
38AQI
9th September 2025
35AQI
35AQI
10th September 2025
33AQI
33AQI
11th September 2025
32AQI
32AQI
12th September 2025
30AQI
30AQI
13th September 2025
31AQI
31AQI
14th September 2025
28AQI
28AQI
15th September 2025
29AQI
29AQI
16th September 2025
28AQI
28AQI
17th September 2025
28AQI
28AQI
18th September 2025
29AQI
29AQI
19th September 2025
28AQI
28AQI
20th September 2025
38AQI
38AQI
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
58AQI
56AQI
66AQI
48AQI
39AQI
41AQI
41AQI
32AQI
No. of days
Jan.Feb.Mar.Apr.MayJun.Jul.Aug.Sep.Oct.Nov.Dec.Total Days
202553AQI
25
6
9
19
11
20
4
21
5
18
13
27
3
28
3
23
8
20
140
112
11
Highest AQI recorded in
January87AQI
Lowest AQI recorded in
September32AQI
202451AQI
3
18
6
2
2
15
1
9
9
14
2
30
31
30
1
23
6
16
9
6
17
13
23
8
181
98
15
Highest AQI recorded in
December86AQI
Lowest AQI recorded in
July31AQI
202363AQI
2
8
1
3
10
2
2
1
5
2
8
1
1
4
3
30
22
61
Highest AQI recorded in
November80AQI
Lowest AQI recorded in
July24AQI
202247AQI
9
11
14
7
15
16
12
18
29
2
27
3
20
1
1
5
3
12
11
2
19
3
1
3
9
1
161
86
7
Highest AQI recorded in
September76AQI
Lowest AQI recorded in
July29AQI
202147AQI
24
6
1
8
20
15
16
22
8
28
3
20
10
28
3
27
4
26
4
12
3
2
5
188
100
6
1
Highest AQI recorded in
January84AQI
Lowest AQI recorded in
October34AQI
202047AQI
7
3
11
5
28
31
24
7
28
2
12
19
7
17
6
3
21
7
151
74
13
Highest AQI recorded in
December81AQI
Lowest AQI recorded in
June25AQI
Most & Least Polluted Years Over the Last 6 Years
Most Polluted Year Recorded
2023(Avg.)
63AQILeast Polluted Year Recorded
2020(Avg.)
47AQICity Environmental Building Station's annual 2025 AQI (53) shows an average percentage change of 4.9% (worsened AQI) compared to previous years: 2020 (47), 2021 (47), 2022 (47), 2023 (63), 2024 (51).
