City First Secondary School Sub Station, Nada, 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 First Secondary School Sub Station, Nada, Hainan, China
2021
2022
2023
2024
2025
AQI
.
Days
AQI Trends: Highest and Lowest
Highest AQI recorded on
6th Sep 2022
84AQILowest AQI recorded on
8th Sep 2022
11AQISame Day Analysis (21st September ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 3rd highest AQI at 36 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: 21st Sep - 22nd Sep 2025
City First Secondary School Sub Station, Nada, Hainan, China
AQI
Day
Night
.
6 AM21st Sep 2025
6 PM
5 AM22nd Sep 2025
Day time
Avg. Highest Time
9AM21st Sep
54AQI
Avg. Lowest Time
8AM21st Sep
28AQI
Night time
Avg. Highest Time
8PM21st Sep
46AQI
Avg. Lowest Time
4AM22nd Sep
34AQI
In the last 24 hours,
City First Secondary School Sub Station's AQI reached its highest point of 54 at 9 AM during the Day, while the lowest point, 28, was recorded at 8 AM during the Day between 21st Sep and 22nd Sep 2025.
Day & Night AQI Trend : Aug - Sep 2025
City First Secondary School Sub Station, Nada, Hainan, China
AugSep
23rd - 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 - 22nd22nd
Day
Night
23rd Aug 2025386 AMAQI
23rd Aug 2025367 AMAQI
23rd Aug 2025458 AMAQI
23rd Aug 2025359 AMAQI
23rd Aug 20253010 AMAQI
23rd Aug 20253411 AMAQI
23rd Aug 20253812 PMAQI
23rd Aug 2025321 PMAQI
23rd Aug 2025262 PMAQI
23rd Aug 2025313 PMAQI
23rd Aug 2025294 PMAQI
23rd Aug 2025305 PMAQI
23rd Aug 2025306 PMAQI
23rd Aug 2025427 PMAQI
23rd Aug 2025428 PMAQI
23rd Aug 2025499 PMAQI
23rd Aug 20254710 PMAQI
23rd Aug 20254111 PMAQI
24th Aug 20254012 AMAQI
24th Aug 2025401 AMAQI
24th Aug 2025422 AMAQI
24th Aug 2025413 AMAQI
24th Aug 2025424 AMAQI
24th Aug 2025405 AMAQI
27°C24/32°C
24th Aug 2025426 AMAQI
24th Aug 2025417 AMAQI
24th Aug 2025448 AMAQI
24th Aug 2025429 AMAQI
24th Aug 20253910 AMAQI
24th Aug 20254011 AMAQI
24th Aug 20253812 PMAQI
24th Aug 2025331 PMAQI
24th Aug 2025272 PMAQI
24th Aug 2025323 PMAQI
24th Aug 2025294 PMAQI
24th Aug 2025305 PMAQI
24th Aug 2025306 PMAQI
24th Aug 2025367 PMAQI
24th Aug 2025358 PMAQI
24th Aug 2025389 PMAQI
24th Aug 20253710 PMAQI
24th Aug 20253611 PMAQI
25th Aug 20254212 AMAQI
25th Aug 2025401 AMAQI
25th Aug 2025382 AMAQI
25th Aug 2025393 AMAQI
25th Aug 2025424 AMAQI
25th Aug 2025425 AMAQI
25°C24/27°C
25th Aug 2025416 AMAQI
25th Aug 2025417 AMAQI
25th Aug 2025328 AMAQI
25th Aug 2025249 AMAQI
25th Aug 20252210 AMAQI
25th Aug 20252611 AMAQI
25th Aug 20252912 PMAQI
25th Aug 2025351 PMAQI
25th Aug 2025302 PMAQI
25th Aug 2025263 PMAQI
25th Aug 2025264 PMAQI
25th Aug 2025285 PMAQI
25th Aug 2025286 PMAQI
25th Aug 2025327 PMAQI
25th Aug 2025388 PMAQI
25th Aug 2025399 PMAQI
25th Aug 20253810 PMAQI
25th Aug 20253911 PMAQI
26th Aug 20253812 AMAQI
26th Aug 2025391 AMAQI
26th Aug 2025412 AMAQI
26th Aug 2025403 AMAQI
26th Aug 2025384 AMAQI
26th Aug 2025385 AMAQI
25°C23/27°C
26th Aug 2025406 AMAQI
26th Aug 2025397 AMAQI
26th Aug 2025348 AMAQI
26th Aug 2025429 AMAQI
26th Aug 20253310 AMAQI
26th Aug 20253611 AMAQI
26th Aug 20253712 PMAQI
26th Aug 2025331 PMAQI
26th Aug 2025322 PMAQI
26th Aug 2025323 PMAQI
26th Aug 2025314 PMAQI
26th Aug 2025315 PMAQI
26th Aug 2025336 PMAQI
26th Aug 2025327 PMAQI
26th Aug 2025358 PMAQI
26th Aug 2025379 PMAQI
26th Aug 20253410 PMAQI
26th Aug 20253711 PMAQI
27th Aug 20253612 AMAQI
27th Aug 2025381 AMAQI
27th Aug 2025412 AMAQI
27th Aug 2025413 AMAQI
27th Aug 2025404 AMAQI
27th Aug 2025405 AMAQI
26°C24/30°C
27th Aug 2025416 AMAQI
27th Aug 2025397 AMAQI
27th Aug 2025328 AMAQI
27th Aug 2025379 AMAQI
27th Aug 20255410 AMAQI
27th Aug 20254811 AMAQI
27th Aug 20255312 PMAQI
27th Aug 2025321 PMAQI
27th Aug 2025302 PMAQI
27th Aug 2025303 PMAQI
27th Aug 2025324 PMAQI
27th Aug 2025245 PMAQI
27th Aug 2025276 PMAQI
27th Aug 2025367 PMAQI
27th Aug 2025348 PMAQI
27th Aug 2025389 PMAQI
27th Aug 20253610 PMAQI
27th Aug 20253511 PMAQI
28th Aug 20253612 AMAQI
28th Aug 2025371 AMAQI
28th Aug 2025382 AMAQI
28th Aug 2025403 AMAQI
28th Aug 2025414 AMAQI
28th Aug 2025405 AMAQI
26°C23/29°C
28th Aug 2025426 AMAQI
28th Aug 2025417 AMAQI
28th Aug 2025348 AMAQI
28th Aug 2025429 AMAQI
28th Aug 20253610 AMAQI
28th Aug 20253411 AMAQI
28th Aug 20253212 PMAQI
28th Aug 2025331 PMAQI
28th Aug 2025362 PMAQI
28th Aug 2025423 PMAQI
28th Aug 2025424 PMAQI
28th Aug 2025505 PMAQI
28th Aug 2025326 PMAQI
28th Aug 2025327 PMAQI
28th Aug 2025348 PMAQI
28th Aug 2025349 PMAQI
28th Aug 20254210 PMAQI
28th Aug 20253711 PMAQI
29th Aug 20253612 AMAQI
29th Aug 2025471 AMAQI
29th Aug 2025482 AMAQI
29th Aug 2025443 AMAQI
29th Aug 2025464 AMAQI
29th Aug 2025445 AMAQI
26°C23/31°C
29th Aug 2025466 AMAQI
29th Aug 2025477 AMAQI
29th Aug 2025498 AMAQI
29th Aug 2025349 AMAQI
29th Aug 20254210 AMAQI
29th Aug 20252811 AMAQI
29th Aug 20253712 PMAQI
29th Aug 2025381 PMAQI
29th Aug 2025422 PMAQI
29th Aug 2025323 PMAQI
29th Aug 2025344 PMAQI
29th Aug 2025375 PMAQI
29th Aug 2025446 PMAQI
29th Aug 2025477 PMAQI
29th Aug 2025448 PMAQI
29th Aug 2025419 PMAQI
29th Aug 20254410 PMAQI
29th Aug 20254311 PMAQI
30th Aug 20253912 AMAQI
30th Aug 2025461 AMAQI
30th Aug 2025462 AMAQI
30th Aug 2025453 AMAQI
30th Aug 2025454 AMAQI
30th Aug 2025445 AMAQI
25°C24/27°C
30th Aug 2025436 AMAQI
30th Aug 2025447 AMAQI
30th Aug 2025348 AMAQI
30th Aug 2025239 AMAQI
30th Aug 20253210 AMAQI
30th Aug 20253011 AMAQI
30th Aug 20253212 PMAQI
30th Aug 2025331 PMAQI
30th Aug 2025292 PMAQI
30th Aug 2025293 PMAQI
30th Aug 2025294 PMAQI
30th Aug 2025345 PMAQI
30th Aug 2025316 PMAQI
30th Aug 2025377 PMAQI
30th Aug 2025428 PMAQI
30th Aug 2025359 PMAQI
30th Aug 20253710 PMAQI
30th Aug 20253611 PMAQI
31st Aug 20254012 AMAQI
31st Aug 2025421 AMAQI
31st Aug 2025482 AMAQI
31st Aug 2025423 AMAQI
31st Aug 2025404 AMAQI
31st Aug 2025435 AMAQI
26°C25/28°C
31st Aug 2025426 AMAQI
31st Aug 2025427 AMAQI
31st Aug 2025368 AMAQI
31st Aug 2025259 AMAQI
31st Aug 20253310 AMAQI
31st Aug 20254211 AMAQI
31st Aug 20253712 PMAQI
31st Aug 2025371 PMAQI
31st Aug 2025322 PMAQI
31st Aug 2025403 PMAQI
31st Aug 2025314 PMAQI
31st Aug 2025275 PMAQI
31st Aug 2025296 PMAQI
31st Aug 2025317 PMAQI
31st Aug 2025358 PMAQI
31st Aug 2025389 PMAQI
31st Aug 20254510 PMAQI
31st Aug 20254411 PMAQI
1st Sep 20253512 AMAQI
1st Sep 2025401 AMAQI
1st Sep 2025442 AMAQI
1st Sep 2025423 AMAQI
1st Sep 2025414 AMAQI
1st Sep 2025445 AMAQI
26°C23/31°C
1st Sep 2025506 AMAQI
1st Sep 2025477 AMAQI
1st Sep 2025228 AMAQI
1st Sep 2025279 AMAQI
1st Sep 20252710 AMAQI
1st Sep 20252911 AMAQI
1st Sep 20252412 PMAQI
1st Sep 2025391 PMAQI
1st Sep 2025302 PMAQI
1st Sep 2025243 PMAQI
1st Sep 2025274 PMAQI
1st Sep 2025275 PMAQI
1st Sep 2025326 PMAQI
1st Sep 2025307 PMAQI
1st Sep 2025388 PMAQI
1st Sep 2025369 PMAQI
1st Sep 20253710 PMAQI
1st Sep 20254811 PMAQI
2nd Sep 20254212 AMAQI
2nd Sep 2025431 AMAQI
2nd Sep 2025432 AMAQI
2nd Sep 2025413 AMAQI
2nd Sep 2025404 AMAQI
2nd Sep 2025405 AMAQI
26°C23/30°C
2nd Sep 2025416 AMAQI
2nd Sep 2025457 AMAQI
2nd Sep 2025378 AMAQI
2nd Sep 2025459 AMAQI
2nd Sep 20253310 AMAQI
2nd Sep 20253311 AMAQI
2nd Sep 20252912 PMAQI
2nd Sep 2025261 PMAQI
2nd Sep 2025262 PMAQI
2nd Sep 2025273 PMAQI
2nd Sep 2025404 PMAQI
2nd Sep 2025335 PMAQI
2nd Sep 2025286 PMAQI
2nd Sep 2025407 PMAQI
2nd Sep 2025408 PMAQI
2nd Sep 2025399 PMAQI
2nd Sep 20254010 PMAQI
2nd Sep 20254211 PMAQI
3rd Sep 20253812 AMAQI
3rd Sep 2025421 AMAQI
3rd Sep 2025492 AMAQI
3rd Sep 2025483 AMAQI
3rd Sep 2025484 AMAQI
3rd Sep 2025415 AMAQI
26°C23/30°C
3rd Sep 2025436 AMAQI
3rd Sep 2025437 AMAQI
3rd Sep 2025328 AMAQI
3rd Sep 2025359 AMAQI
3rd Sep 20253410 AMAQI
3rd Sep 20254411 AMAQI
3rd Sep 20253812 PMAQI
3rd Sep 2025301 PMAQI
3rd Sep 2025302 PMAQI
3rd Sep 2025213 PMAQI
3rd Sep 2025254 PMAQI
3rd Sep 2025265 PMAQI
3rd Sep 2025286 PMAQI
3rd Sep 2025397 PMAQI
3rd Sep 2025388 PMAQI
3rd Sep 2025389 PMAQI
3rd Sep 20254510 PMAQI
3rd Sep 20253811 PMAQI
4th Sep 20254112 AMAQI
4th Sep 2025441 AMAQI
4th Sep 2025432 AMAQI
4th Sep 2025433 AMAQI
4th Sep 2025404 AMAQI
4th Sep 2025425 AMAQI
27°C24/30°C
4th Sep 2025396 AMAQI
4th Sep 2025407 AMAQI
4th Sep 2025418 AMAQI
4th Sep 2025489 AMAQI
4th Sep 20254410 AMAQI
4th Sep 20255011 AMAQI
4th Sep 20253212 PMAQI
4th Sep 2025341 PMAQI
4th Sep 2025262 PMAQI
4th Sep 2025263 PMAQI
4th Sep 2025284 PMAQI
4th Sep 2025335 PMAQI
4th Sep 2025326 PMAQI
4th Sep 2025317 PMAQI
4th Sep 2025428 PMAQI
4th Sep 2025339 PMAQI
4th Sep 20252810 PMAQI
4th Sep 20252711 PMAQI
5th Sep 20252712 AMAQI
5th Sep 2025371 AMAQI
5th Sep 2025392 AMAQI
5th Sep 2025393 AMAQI
5th Sep 2025424 AMAQI
5th Sep 2025425 AMAQI
27°C24/31°C
5th Sep 2025406 AMAQI
5th Sep 2025407 AMAQI
5th Sep 2025358 AMAQI
5th Sep 2025409 AMAQI
5th Sep 20253710 AMAQI
5th Sep 20253211 AMAQI
5th Sep 20253212 PMAQI
5th Sep 2025321 PMAQI
5th Sep 2025372 PMAQI
5th Sep 2025323 PMAQI
5th Sep 2025254 PMAQI
5th Sep 2025315 PMAQI
5th Sep 2025366 PMAQI
5th Sep 2025327 PMAQI
5th Sep 2025358 PMAQI
5th Sep 2025359 PMAQI
5th Sep 20253810 PMAQI
5th Sep 20253711 PMAQI
6th Sep 20252712 AMAQI
6th Sep 2025311 AMAQI
6th Sep 2025342 AMAQI
6th Sep 2025363 AMAQI
6th Sep 2025404 AMAQI
6th Sep 2025385 AMAQI
27°C24/32°C
6th Sep 2025386 AMAQI
6th Sep 2025357 AMAQI
6th Sep 2025178 AMAQI
6th Sep 2025229 AMAQI
6th Sep 20253910 AMAQI
6th Sep 20253111 AMAQI
6th Sep 20253212 PMAQI
6th Sep 2025291 PMAQI
6th Sep 2025222 PMAQI
6th Sep 2025273 PMAQI
6th Sep 2025284 PMAQI
6th Sep 2025305 PMAQI
6th Sep 2025286 PMAQI
6th Sep 2025307 PMAQI
6th Sep 2025338 PMAQI
6th Sep 2025459 PMAQI
6th Sep 20253610 PMAQI
6th Sep 20254011 PMAQI
7th Sep 20254212 AMAQI
7th Sep 2025361 AMAQI
7th Sep 2025362 AMAQI
7th Sep 2025423 AMAQI
7th Sep 2025384 AMAQI
7th Sep 2025385 AMAQI
27°C24/32°C
7th Sep 2025386 AMAQI
7th Sep 2025387 AMAQI
7th Sep 2025468 AMAQI
7th Sep 2025489 AMAQI
7th Sep 20255210 AMAQI
7th Sep 20255311 AMAQI
7th Sep 20255012 PMAQI
7th Sep 2025531 PMAQI
7th Sep 2025542 PMAQI
7th Sep 2025543 PMAQI
7th Sep 2025474 PMAQI
7th Sep 2025495 PMAQI
7th Sep 2025586 PMAQI
7th Sep 2025517 PMAQI
7th Sep 2025568 PMAQI
7th Sep 2025519 PMAQI
7th Sep 20255210 PMAQI
7th Sep 20254711 PMAQI
8th Sep 20254412 AMAQI
8th Sep 2025391 AMAQI
8th Sep 2025422 AMAQI
8th Sep 2025433 AMAQI
8th Sep 2025414 AMAQI
8th Sep 2025435 AMAQI
26°C24/31°C
8th Sep 2025436 AMAQI
8th Sep 2025427 AMAQI
8th Sep 2025388 AMAQI
8th Sep 2025539 AMAQI
8th Sep 20254410 AMAQI
8th Sep 20255111 AMAQI
8th Sep 20255012 PMAQI
8th Sep 2025461 PMAQI
8th Sep 2025502 PMAQI
8th Sep 2025383 PMAQI
8th Sep 2025364 PMAQI
8th Sep 2025305 PMAQI
8th Sep 2025376 PMAQI
8th Sep 2025407 PMAQI
8th Sep 2025458 PMAQI
8th Sep 2025509 PMAQI
8th Sep 20255010 PMAQI
8th Sep 20255011 PMAQI
9th Sep 20254012 AMAQI
9th Sep 2025421 AMAQI
9th Sep 2025402 AMAQI
9th Sep 2025443 AMAQI
9th Sep 2025474 AMAQI
9th Sep 2025445 AMAQI
26°C23/30°C
9th Sep 2025446 AMAQI
9th Sep 2025447 AMAQI
9th Sep 2025308 AMAQI
9th Sep 2025289 AMAQI
9th Sep 20253710 AMAQI
9th Sep 20253511 AMAQI
9th Sep 20252912 PMAQI
9th Sep 2025311 PMAQI
9th Sep 2025262 PMAQI
9th Sep 2025273 PMAQI
9th Sep 2025284 PMAQI
9th Sep 2025365 PMAQI
9th Sep 2025366 PMAQI
9th Sep 2025377 PMAQI
9th Sep 2025388 PMAQI
9th Sep 2025349 PMAQI
9th Sep 20253210 PMAQI
9th Sep 20253611 PMAQI
10th Sep 20254112 AMAQI
10th Sep 2025411 AMAQI
10th Sep 2025432 AMAQI
10th Sep 2025443 AMAQI
10th Sep 2025394 AMAQI
10th Sep 2025415 AMAQI
27°C23/31°C
10th Sep 2025406 AMAQI
10th Sep 2025397 AMAQI
10th Sep 2025258 AMAQI
10th Sep 2025289 AMAQI
10th Sep 20253010 AMAQI
10th Sep 20253211 AMAQI
10th Sep 20253212 PMAQI
10th Sep 2025271 PMAQI
10th Sep 2025302 PMAQI
10th Sep 2025243 PMAQI
10th Sep 2025264 PMAQI
10th Sep 2025335 PMAQI
10th Sep 2025246 PMAQI
10th Sep 2025377 PMAQI
10th Sep 2025428 PMAQI
10th Sep 2025419 PMAQI
10th Sep 20254210 PMAQI
10th Sep 20253811 PMAQI
11th Sep 20254012 AMAQI
11th Sep 2025411 AMAQI
11th Sep 2025432 AMAQI
11th Sep 2025393 AMAQI
11th Sep 2025394 AMAQI
11th Sep 2025385 AMAQI
26°C24/31°C
11th Sep 2025366 AMAQI
11th Sep 2025377 AMAQI
11th Sep 2025348 AMAQI
11th Sep 2025379 AMAQI
11th Sep 20253110 AMAQI
11th Sep 20253211 AMAQI
11th Sep 20252812 PMAQI
11th Sep 2025281 PMAQI
11th Sep 2025272 PMAQI
11th Sep 2025283 PMAQI
11th Sep 2025264 PMAQI
11th Sep 2025255 PMAQI
11th Sep 2025316 PMAQI
11th Sep 2025307 PMAQI
11th Sep 2025308 PMAQI
11th Sep 2025349 PMAQI
11th Sep 20252810 PMAQI
11th Sep 20253011 PMAQI
12th Sep 20253412 AMAQI
12th Sep 2025421 AMAQI
12th Sep 2025402 AMAQI
12th Sep 2025373 AMAQI
12th Sep 2025354 AMAQI
12th Sep 2025375 AMAQI
27°C23/32°C
12th Sep 2025366 AMAQI
12th Sep 2025367 AMAQI
12th Sep 2025398 AMAQI
12th Sep 2025329 AMAQI
12th Sep 20253010 AMAQI
12th Sep 20253211 AMAQI
12th Sep 20253112 PMAQI
12th Sep 2025341 PMAQI
12th Sep 2025272 PMAQI
12th Sep 2025353 PMAQI
12th Sep 2025364 PMAQI
12th Sep 2025365 PMAQI
12th Sep 2025286 PMAQI
12th Sep 2025317 PMAQI
12th Sep 2025368 PMAQI
12th Sep 2025339 PMAQI
12th Sep 20253410 PMAQI
12th Sep 20253511 PMAQI
13th Sep 20253612 AMAQI
13th Sep 2025391 AMAQI
13th Sep 2025382 AMAQI
13th Sep 2025363 AMAQI
13th Sep 2025354 AMAQI
13th Sep 2025375 AMAQI
27°C23/32°C
13th Sep 2025366 AMAQI
13th Sep 2025347 AMAQI
13th Sep 2025338 AMAQI
13th Sep 2025389 AMAQI
13th Sep 20252810 AMAQI
13th Sep 20253011 AMAQI
13th Sep 20252612 PMAQI
13th Sep 2025261 PMAQI
13th Sep 2025262 PMAQI
13th Sep 2025303 PMAQI
13th Sep 2025274 PMAQI
13th Sep 2025245 PMAQI
13th Sep 2025266 PMAQI
13th Sep 2025357 PMAQI
13th Sep 2025398 PMAQI
13th Sep 2025389 PMAQI
13th Sep 20253510 PMAQI
13th Sep 20253511 PMAQI
14th Sep 20253612 AMAQI
14th Sep 2025351 AMAQI
14th Sep 2025362 AMAQI
14th Sep 2025343 AMAQI
14th Sep 2025354 AMAQI
14th Sep 2025345 AMAQI
26°C23/31°C
14th Sep 2025346 AMAQI
14th Sep 2025357 AMAQI
14th Sep 2025288 AMAQI
14th Sep 2025289 AMAQI
14th Sep 20252710 AMAQI
14th Sep 20253111 AMAQI
14th Sep 20253012 PMAQI
14th Sep 2025291 PMAQI
14th Sep 2025262 PMAQI
14th Sep 2025273 PMAQI
14th Sep 2025254 PMAQI
14th Sep 2025245 PMAQI
14th Sep 2025226 PMAQI
14th Sep 2025247 PMAQI
14th Sep 2025318 PMAQI
14th Sep 2025369 PMAQI
14th Sep 20253210 PMAQI
14th Sep 20252911 PMAQI
15th Sep 20253212 AMAQI
15th Sep 2025341 AMAQI
15th Sep 2025352 AMAQI
15th Sep 2025343 AMAQI
15th Sep 2025344 AMAQI
15th Sep 2025345 AMAQI
26°C23/31°C
15th Sep 2025346 AMAQI
15th Sep 2025337 AMAQI
15th Sep 2025348 AMAQI
15th Sep 2025389 AMAQI
15th Sep 20253810 AMAQI
15th Sep 20253611 AMAQI
15th Sep 20252412 PMAQI
15th Sep 2025211 PMAQI
15th Sep 2025212 PMAQI
15th Sep 2025193 PMAQI
15th Sep 2025194 PMAQI
15th Sep 2025215 PMAQI
15th Sep 2025266 PMAQI
15th Sep 2025327 PMAQI
15th Sep 2025328 PMAQI
15th Sep 2025329 PMAQI
15th Sep 20253210 PMAQI
15th Sep 20253011 PMAQI
16th Sep 20253312 AMAQI
16th Sep 2025331 AMAQI
16th Sep 2025332 AMAQI
16th Sep 2025323 AMAQI
16th Sep 2025324 AMAQI
16th Sep 2025335 AMAQI
26°C23/32°C
16th Sep 2025326 AMAQI
16th Sep 2025337 AMAQI
16th Sep 2025318 AMAQI
16th Sep 2025299 AMAQI
16th Sep 20253010 AMAQI
16th Sep 20252411 AMAQI
16th Sep 20252712 PMAQI
16th Sep 2025271 PMAQI
16th Sep 2025262 PMAQI
16th Sep 2025173 PMAQI
16th Sep 2025204 PMAQI
16th Sep 2025185 PMAQI
16th Sep 2025176 PMAQI
16th Sep 2025227 PMAQI
16th Sep 2025298 PMAQI
16th Sep 2025329 PMAQI
16th Sep 20253210 PMAQI
16th Sep 20253211 PMAQI
17th Sep 20252812 AMAQI
17th Sep 2025341 AMAQI
17th Sep 2025332 AMAQI
17th Sep 2025333 AMAQI
17th Sep 2025324 AMAQI
17th Sep 2025325 AMAQI
25°C24/29°C
17th Sep 2025326 AMAQI
17th Sep 2025327 AMAQI
17th Sep 2025218 AMAQI
17th Sep 2025209 AMAQI
17th Sep 20252210 AMAQI
17th Sep 20252211 AMAQI
17th Sep 20252412 PMAQI
17th Sep 2025221 PMAQI
17th Sep 2025232 PMAQI
17th Sep 2025233 PMAQI
17th Sep 2025234 PMAQI
17th Sep 2025225 PMAQI
17th Sep 2025226 PMAQI
17th Sep 2025287 PMAQI
17th Sep 2025298 PMAQI
17th Sep 2025269 PMAQI
17th Sep 20252710 PMAQI
17th Sep 20252911 PMAQI
18th Sep 20252812 AMAQI
18th Sep 2025321 AMAQI
18th Sep 2025332 AMAQI
18th Sep 2025333 AMAQI
18th Sep 2025324 AMAQI
18th Sep 2025325 AMAQI
26°C24/30°C
18th Sep 2025306 AMAQI
18th Sep 2025327 AMAQI
18th Sep 2025258 AMAQI
18th Sep 2025239 AMAQI
18th Sep 20251810 AMAQI
18th Sep 20251711 AMAQI
18th Sep 20251712 PMAQI
18th Sep 2025211 PMAQI
18th Sep 2025172 PMAQI
18th Sep 2025163 PMAQI
18th Sep 2025184 PMAQI
18th Sep 2025185 PMAQI
18th Sep 2025276 PMAQI
18th Sep 2025217 PMAQI
18th Sep 2025268 PMAQI
18th Sep 2025279 PMAQI
18th Sep 20252710 PMAQI
18th Sep 20252711 PMAQI
19th Sep 20252512 AMAQI
19th Sep 2025261 AMAQI
19th Sep 2025322 AMAQI
19th Sep 2025323 AMAQI
19th Sep 2025304 AMAQI
19th Sep 2025305 AMAQI
26°C24/30°C
19th Sep 2025296 AMAQI
19th Sep 2025297 AMAQI
19th Sep 2025228 AMAQI
19th Sep 2025219 AMAQI
19th Sep 20252110 AMAQI
19th Sep 20252011 AMAQI
19th Sep 20252412 PMAQI
19th Sep 2025181 PMAQI
19th Sep 2025192 PMAQI
19th Sep 2025183 PMAQI
19th Sep 2025184 PMAQI
19th Sep 2025205 PMAQI
19th Sep 2025216 PMAQI
19th Sep 2025227 PMAQI
19th Sep 2025288 PMAQI
19th Sep 2025299 PMAQI
19th Sep 20253010 PMAQI
19th Sep 20252611 PMAQI
20th Sep 20252612 AMAQI
20th Sep 2025301 AMAQI
20th Sep 2025312 AMAQI
20th Sep 2025323 AMAQI
20th Sep 2025294 AMAQI
20th Sep 2025295 AMAQI
27°C23/31°C
20th Sep 2025296 AMAQI
20th Sep 2025297 AMAQI
20th Sep 2025328 AMAQI
20th Sep 2025389 AMAQI
20th Sep 20253610 AMAQI
20th Sep 20253411 AMAQI
20th Sep 20253012 PMAQI
20th Sep 2025301 PMAQI
20th Sep 2025282 PMAQI
20th Sep 2025303 PMAQI
20th Sep 2025304 PMAQI
20th Sep 2025305 PMAQI
20th Sep 2025326 PMAQI
20th Sep 2025327 PMAQI
20th Sep 2025348 PMAQI
20th Sep 2025399 PMAQI
20th Sep 20254310 PMAQI
20th Sep 20255111 PMAQI
21st Sep 20254012 AMAQI
21st Sep 2025301 AMAQI
21st Sep 2025302 AMAQI
21st Sep 2025323 AMAQI
21st Sep 2025324 AMAQI
21st Sep 2025305 AMAQI
27°C24/31°C
21st Sep 2025296 AMAQI
21st Sep 2025297 AMAQI
21st Sep 2025288 AMAQI
21st Sep 2025549 AMAQI
21st Sep 20254610 AMAQI
21st Sep 20253111 AMAQI
21st Sep 20253512 PMAQI
21st Sep 2025441 PMAQI
21st Sep 2025422 PMAQI
21st Sep 2025503 PMAQI
21st Sep 2025494 PMAQI
21st Sep 2025425 PMAQI
21st Sep 2025406 PMAQI
21st Sep 2025427 PMAQI
21st Sep 2025468 PMAQI
21st Sep 2025449 PMAQI
21st Sep 20254510 PMAQI
21st Sep 20254611 PMAQI
22nd Sep 20254212 AMAQI
22nd Sep 2025341 AMAQI
22nd Sep 2025342 AMAQI
22nd Sep 2025343 AMAQI
22nd Sep 2025344 AMAQI
22nd Sep 2025365 AMAQI
27°C24/31°C
22nd Sep 2025366 AMAQI
6 AM22nd Sep 2025347 AMAQI
22nd Sep 2025278 AMAQI
22nd Sep 2025319 AMAQI
22nd Sep 20252910 AMAQI
22nd Sep 20251811 AMAQI
22nd Sep 20251812 PMAQI
12 PM22nd Sep 2025181 PMAQI
22nd Sep 2025262 PMAQI
22nd Sep 2025263 PMAQI
22nd Sep 2025224 PMAQI
22nd Sep 2025165 PMAQI
22nd Sep 2025186 PMAQI
6 PM12 AM
5 AM
--°C/°C
Day time
Avg. Highest Time
6 AM - 7 AM
38AQI
2 hours / Day
60 hours / Month
Avg. Lowest Time
3 PM - 4 PM
29AQI
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. 38), while the lowest AQI was between 3 PM to 4 PM (Avg. 29).
Night time
Avg. Highest Time
1 AM - 5 AM
38AQI
5 hours / Day
150 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 1 AM to 5 AM (Avg. 38), while the lowest AQI was between 7 PM to 7 PM (Avg. 34).
2025 Days Vs Air Quality
City First Secondary School Sub Station, Nada, Hainan, China
2025
52%
136
45%
118
4%
10
Total number of days with different AQI categories in last 265 days in 2025 (100 days remaining)
Good
136 DaysModerate
118 DaysPoor
10 DaysUnhealthy
0 DaysSevere
0 DaysHazardous
0 DaysUnder WHO’s Safe Air Quality Limits: 52%
Health Risk Level:
Considerable
In 2025, 52% of 265 days were within WHO’s safe air quality limits, and 48% exceeded them. The risk of health issues is Considerable, with potential for conditions in sensitive individuals.
Annual Air Quality Insights
City First Secondary School Sub Station, Nada, 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
110AQI
110AQI
2nd January 2025
98AQI
98AQI
3rd January 2025
100AQI
100AQI
4th January 2025
91AQI
91AQI
5th January 2025
106AQI
106AQI
6th January 2025
102AQI
102AQI
7th January 2025
85AQI
85AQI
8th January 2025
84AQI
84AQI
9th January 2025
96AQI
96AQI
10th January 2025
115AQI
115AQI
11th January 2025
90AQI
90AQI
12th January 2025
89AQI
89AQI
13th January 2025
74AQI
74AQI
14th January 2025
69AQI
69AQI
15th January 2025
89AQI
89AQI
16th January 2025
92AQI
92AQI
17th January 2025
102AQI
102AQI
18th January 2025
82AQI
82AQI
19th January 2025
95AQI
95AQI
20th January 2025
88AQI
88AQI
21st January 2025
81AQI
81AQI
22nd January 2025
89AQI
89AQI
23rd January 2025
70AQI
70AQI
24th January 2025
65AQI
65AQI
25th January 2025
59AQI
59AQI
26th January 2025
56AQI
56AQI
27th January 2025
62AQI
62AQI
28th January 2025
70AQI
70AQI
29th January 2025
74AQI
74AQI
30th January 2025
66AQI
66AQI
31st January 2025
65AQI
65AQI
1st February 2025
57AQI
57AQI
2nd February 2025
53AQI
53AQI
3rd February 2025
61AQI
61AQI
4th February 2025
56AQI
56AQI
5th February 2025
50AQI
50AQI
6th February 2025
61AQI
61AQI
7th February 2025
68AQI
68AQI
8th February 2025
60AQI
60AQI
9th February 2025
69AQI
69AQI
10th February 2025
60AQI
60AQI
11th February 2025
58AQI
58AQI
12th February 2025
45AQI
45AQI
13th February 2025
58AQI
58AQI
14th February 2025
40AQI
40AQI
15th February 2025
63AQI
63AQI
16th February 2025
48AQI
48AQI
17th February 2025
72AQI
72AQI
18th February 2025
63AQI
63AQI
19th February 2025
69AQI
69AQI
20th February 2025
59AQI
59AQI
21st February 2025
62AQI
62AQI
22nd February 2025
45AQI
45AQI
23rd February 2025
47AQI
47AQI
24th February 2025
48AQI
48AQI
25th February 2025
44AQI
44AQI
26th February 2025
50AQI
50AQI
27th February 2025
52AQI
52AQI
28th February 2025
55AQI
55AQI
1st March 2025
61AQI
61AQI
2nd March 2025
54AQI
54AQI
3rd March 2025
67AQI
67AQI
4th March 2025
70AQI
70AQI
5th March 2025
81AQI
81AQI
6th March 2025
41AQI
41AQI
7th March 2025
45AQI
45AQI
8th March 2025
39AQI
39AQI
9th March 2025
57AQI
57AQI
10th March 2025
54AQI
54AQI
11th March 2025
55AQI
55AQI
12th March 2025
50AQI
50AQI
13th March 2025
50AQI
50AQI
14th March 2025
47AQI
47AQI
15th March 2025
63AQI
63AQI
16th March 2025
45AQI
45AQI
17th March 2025
68AQI
68AQI
18th March 2025
69AQI
69AQI
19th March 2025
81AQI
81AQI
20th March 2025
76AQI
76AQI
21st March 2025
77AQI
77AQI
22nd March 2025
75AQI
75AQI
23rd March 2025
86AQI
86AQI
24th March 2025
76AQI
76AQI
25th March 2025
84AQI
84AQI
26th March 2025
81AQI
81AQI
27th March 2025
89AQI
89AQI
28th March 2025
90AQI
90AQI
29th March 2025
58AQI
58AQI
30th March 2025
39AQI
39AQI
31st March 2025
47AQI
47AQI
1st April 2025
52AQI
52AQI
2nd April 2025
62AQI
62AQI
3rd April 2025
59AQI
59AQI
4th April 2025
62AQI
62AQI
5th April 2025
66AQI
66AQI
6th April 2025
43AQI
43AQI
7th April 2025
60AQI
60AQI
8th April 2025
57AQI
57AQI
9th April 2025
65AQI
65AQI
10th April 2025
66AQI
66AQI
11th April 2025
75AQI
75AQI
12th April 2025
70AQI
70AQI
13th April 2025
131AQI
131AQI
14th April 2025
131AQI
131AQI
15th April 2025
128AQI
128AQI
16th April 2025
101AQI
101AQI
17th April 2025
104AQI
104AQI
18th April 2025
86AQI
86AQI
19th April 2025
70AQI
70AQI
20th April 2025
71AQI
71AQI
21st April 2025
59AQI
59AQI
22nd April 2025
66AQI
66AQI
23rd April 2025
61AQI
61AQI
24th April 2025
66AQI
66AQI
25th April 2025
67AQI
67AQI
26th April 2025
57AQI
57AQI
27th April 2025
56AQI
56AQI
28th April 2025
52AQI
52AQI
29th April 2025
46AQI
46AQI
30th April 2025
48AQI
48AQI
1st May 2025
50AQI
50AQI
2nd May 2025
54AQI
54AQI
3rd May 2025
61AQI
61AQI
4th May 2025
63AQI
63AQI
5th May 2025
57AQI
57AQI
6th May 2025
63AQI
63AQI
7th May 2025
62AQI
62AQI
8th May 2025
60AQI
60AQI
9th May 2025
55AQI
55AQI
10th May 2025
51AQI
51AQI
11th May 2025
56AQI
56AQI
12th May 2025
62AQI
62AQI
13th May 2025
56AQI
56AQI
14th May 2025
48AQI
48AQI
15th May 2025
42AQI
42AQI
16th May 2025
42AQI
42AQI
17th May 2025
42AQI
42AQI
18th May 2025
43AQI
43AQI
19th May 2025
43AQI
43AQI
20th May 2025
43AQI
43AQI
21st May 2025
48AQI
48AQI
22nd May 2025
43AQI
43AQI
23rd May 2025
44AQI
44AQI
24th May 2025
44AQI
44AQI
25th May 2025
52AQI
52AQI
26th May 2025
62AQI
62AQI
27th May 2025
52AQI
52AQI
28th May 2025
46AQI
46AQI
29th May 2025
45AQI
45AQI
30th May 2025
45AQI
45AQI
31st May 2025
41AQI
41AQI
1st June 2025
43AQI
43AQI
2nd June 2025
36AQI
36AQI
3rd June 2025
52AQI
52AQI
4th June 2025
56AQI
56AQI
5th June 2025
52AQI
52AQI
6th June 2025
46AQI
46AQI
7th June 2025
50AQI
50AQI
8th June 2025
47AQI
47AQI
9th June 2025
49AQI
49AQI
10th June 2025
53AQI
53AQI
11th June 2025
43AQI
43AQI
12th June 2025
31AQI
31AQI
13th June 2025
26AQI
26AQI
14th June 2025
29AQI
29AQI
15th June 2025
32AQI
32AQI
16th June 2025
37AQI
37AQI
17th June 2025
35AQI
35AQI
18th June 2025
32AQI
32AQI
19th June 2025
32AQI
32AQI
20th June 2025
32AQI
32AQI
21st June 2025
35AQI
35AQI
22nd June 2025
39AQI
39AQI
23rd June 2025
35AQI
35AQI
24th June 2025
35AQI
35AQI
25th June 2025
33AQI
33AQI
26th June 2025
33AQI
33AQI
27th June 2025
34AQI
34AQI
28th June 2025
32AQI
32AQI
29th June 2025
33AQI
33AQI
30th June 2025
31AQI
31AQI
1st July 2025
29AQI
29AQI
2nd July 2025
27AQI
27AQI
3rd July 2025
28AQI
28AQI
4th July 2025
31AQI
31AQI
5th July 2025
32AQI
32AQI
6th July 2025
34AQI
34AQI
7th July 2025
30AQI
30AQI
8th July 2025
36AQI
36AQI
9th July 2025
39AQI
39AQI
10th July 2025
42AQI
42AQI
11th July 2025
42AQI
42AQI
12th July 2025
42AQI
42AQI
13th July 2025
45AQI
45AQI
14th July 2025
48AQI
48AQI
15th July 2025
48AQI
48AQI
16th July 2025
50AQI
50AQI
17th July 2025
47AQI
47AQI
18th July 2025
46AQI
46AQI
19th July 2025
44AQI
44AQI
20th July 2025
41AQI
41AQI
21st July 2025
38AQI
38AQI
22nd July 2025
36AQI
36AQI
23rd July 2025
35AQI
35AQI
24th July 2025
33AQI
33AQI
25th July 2025
34AQI
34AQI
26th July 2025
36AQI
36AQI
27th July 2025
37AQI
37AQI
28th July 2025
33AQI
33AQI
29th July 2025
32AQI
32AQI
30th July 2025
32AQI
32AQI
31st July 2025
40AQI
40AQI
1st August 2025
55AQI
55AQI
2nd August 2025
54AQI
54AQI
3rd August 2025
57AQI
57AQI
4th August 2025
57AQI
57AQI
5th August 2025
55AQI
55AQI
6th August 2025
53AQI
53AQI
7th August 2025
51AQI
51AQI
8th August 2025
52AQI
52AQI
9th August 2025
52AQI
52AQI
10th August 2025
53AQI
53AQI
11th August 2025
46AQI
46AQI
12th August 2025
50AQI
50AQI
13th August 2025
47AQI
47AQI
14th August 2025
43AQI
43AQI
15th August 2025
38AQI
38AQI
16th August 2025
37AQI
37AQI
17th August 2025
35AQI
35AQI
18th August 2025
35AQI
35AQI
19th August 2025
34AQI
34AQI
20th August 2025
36AQI
36AQI
21st August 2025
37AQI
37AQI
22nd August 2025
36AQI
36AQI
23rd August 2025
38AQI
38AQI
24th August 2025
38AQI
38AQI
25th August 2025
38AQI
38AQI
26th August 2025
37AQI
37AQI
27th August 2025
37AQI
37AQI
28th August 2025
37AQI
37AQI
29th August 2025
41AQI
41AQI
30th August 2025
37AQI
37AQI
31st August 2025
37AQI
37AQI
1st September 2025
36AQI
36AQI
2nd September 2025
38AQI
38AQI
3rd September 2025
38AQI
38AQI
4th September 2025
36AQI
36AQI
5th September 2025
33AQI
33AQI
6th September 2025
33AQI
33AQI
7th September 2025
46AQI
46AQI
8th September 2025
44AQI
44AQI
9th September 2025
37AQI
37AQI
10th September 2025
38AQI
38AQI
11th September 2025
34AQI
34AQI
12th September 2025
35AQI
35AQI
13th September 2025
34AQI
34AQI
14th September 2025
33AQI
33AQI
15th September 2025
30AQI
30AQI
16th September 2025
28AQI
28AQI
17th September 2025
27AQI
27AQI
18th September 2025
26AQI
26AQI
19th September 2025
25AQI
25AQI
20th September 2025
32AQI
32AQI
21st September 2025
36AQI
36AQI
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
84AQI
56AQI
64AQI
71AQI
51AQI
38AQI
38AQI
44AQI
34AQI
No. of days
Jan.Feb.Mar.Apr.MayJun.Jul.Aug.Sep.Oct.Nov.Dec.Total Days
202554AQI
26
5
9
19
9
22
3
22
5
16
15
26
4
31
21
10
21
136
118
10
Highest AQI recorded in
January84AQI
Lowest AQI recorded in
September34AQI
202453AQI
6
16
7
8
2
8
13
1
1
17
2
19
5
30
31
30
1
21
8
13
15
3
5
25
25
6
171
133
14
Highest AQI recorded in
December82AQI
Lowest AQI recorded in
July27AQI
202359AQI
1
8
1
1
1
9
3
2
1
1
1
5
2
9
2
3
2
1
9
20
1
31
46
6
Highest AQI recorded in
November81AQI
Lowest AQI recorded in
September26AQI
202248AQI
10
18
16
5
10
21
3
13
1
21
10
30
18
1
2
7
10
14
1
19
4
4
8
1
144
100
3
Highest AQI recorded in
October62AQI
Lowest AQI recorded in
August17AQI
202153AQI
25
6
8
20
6
25
11
19
23
8
20
10
31
24
4
25
5
23
8
10
18
2
4
23
4
185
165
12
Highest AQI recorded in
January84AQI
Lowest AQI recorded in
July35AQI
202058AQI
21
4
25
5
11
20
10
15
5
6
17
8
73
61
13
Highest AQI recorded in
December80AQI
Lowest AQI recorded in
August39AQI
Most & Least Polluted Years Over the Last 6 Years
Most Polluted Year Recorded
2023(Avg.)
59AQILeast Polluted Year Recorded
2022(Avg.)
48AQICity First Secondary School Sub Station's annual 2025 AQI (54) shows an average percentage change of 0.3% (worsened AQI) compared to previous years: 2020 (58), 2021 (53), 2022 (48), 2023 (59), 2024 (53).
