Tunchang County Hongqi Middle School Substation, 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+
August Air Quality Analysis
Tunchang County Hongqi Middle School Substation, Jiaji, Hainan, China
2021
2022
2023
2024
2025
AQI
.
Days
AQI Trends: Highest and Lowest
Highest AQI recorded on
17th Aug 2023
56AQILowest AQI recorded on
16th Aug 2021
15AQISame Day Analysis (1st August ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 1st highest AQI at 55 of Moderate air quality on the same day.
Download 2024 Annual Data
World Air Quality Report
Day & Night AQI Trend: 2nd Aug - 3rd Aug 2025
Tunchang County Hongqi Middle School Substation, Jiaji, Hainan, China
AQI
Day
Night
.
6 AM2nd Aug 2025
7 PM
5 AM3rd Aug 2025
Day time
Avg. Highest Time
12AMNaNth undefined
AQI
Avg. Lowest Time
12AMNaNth undefined
AQI
Night time
Avg. Highest Time
1AM3rd Aug
58AQI
Avg. Lowest Time
4PM2nd Aug
38AQI
In the last 24 hours,
Tunchang County Hongqi Middle School Substation's AQI reached its highest point of 58 at 1 AM during the Night, while the lowest point, 38, was recorded at 4 PM during the Night between 2nd Aug and 3rd Aug 2025.
Day & Night AQI Trend : Jul - Aug 2025
Tunchang County Hongqi Middle School Substation, Jiaji, Hainan, China
JulAug
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 - 31st31st - 01st01st - 02nd02nd - 03rd03rd
Day
Night
4th Jul 2025286 AMAQI
4th Jul 2025287 AMAQI
4th Jul 2025298 AMAQI
4th Jul 2025389 AMAQI
4th Jul 20253110 AMAQI
4th Jul 20252411 AMAQI
4th Jul 20253012 PMAQI
4th Jul 2025281 PMAQI
4th Jul 2025272 PMAQI
4th Jul 2025273 PMAQI
4th Jul 2025254 PMAQI
4th Jul 2025265 PMAQI
4th Jul 2025236 PMAQI
4th Jul 2025267 PMAQI
4th Jul 2025328 PMAQI
4th Jul 2025319 PMAQI
4th Jul 20253210 PMAQI
4th Jul 20253411 PMAQI
5th Jul 20253312 AMAQI
5th Jul 2025321 AMAQI
5th Jul 2025302 AMAQI
5th Jul 2025323 AMAQI
5th Jul 2025324 AMAQI
5th Jul 2025315 AMAQI
26°C24/28°C
5th Jul 2025326 AMAQI
5th Jul 2025317 AMAQI
5th Jul 2025248 AMAQI
5th Jul 2025309 AMAQI
5th Jul 20253010 AMAQI
5th Jul 20252511 AMAQI
5th Jul 20252812 PMAQI
5th Jul 2025261 PMAQI
5th Jul 2025262 PMAQI
5th Jul 2025283 PMAQI
5th Jul 2025284 PMAQI
5th Jul 2025295 PMAQI
5th Jul 2025326 PMAQI
5th Jul 2025337 PMAQI
5th Jul 2025358 PMAQI
5th Jul 2025369 PMAQI
5th Jul 20253610 PMAQI
5th Jul 20253511 PMAQI
6th Jul 20253412 AMAQI
6th Jul 2025351 AMAQI
6th Jul 2025332 AMAQI
6th Jul 2025363 AMAQI
6th Jul 2025344 AMAQI
6th Jul 2025355 AMAQI
27°C24/33°C
6th Jul 2025356 AMAQI
6th Jul 2025357 AMAQI
6th Jul 2025328 AMAQI
6th Jul 2025299 AMAQI
6th Jul 20253410 AMAQI
6th Jul 20253411 AMAQI
6th Jul 20253512 PMAQI
6th Jul 2025341 PMAQI
6th Jul 2025302 PMAQI
6th Jul 2025303 PMAQI
6th Jul 2025344 PMAQI
6th Jul 2025345 PMAQI
6th Jul 2025346 PMAQI
6th Jul 2025347 PMAQI
6th Jul 2025348 PMAQI
6th Jul 2025379 PMAQI
6th Jul 20253510 PMAQI
6th Jul 20253611 PMAQI
7th Jul 20253612 AMAQI
7th Jul 2025341 AMAQI
7th Jul 2025352 AMAQI
7th Jul 2025363 AMAQI
7th Jul 2025344 AMAQI
7th Jul 2025345 AMAQI
27°C24/33°C
7th Jul 2025356 AMAQI
7th Jul 2025347 AMAQI
7th Jul 2025308 AMAQI
7th Jul 2025269 AMAQI
7th Jul 20253710 AMAQI
7th Jul 20253411 AMAQI
7th Jul 20252912 PMAQI
7th Jul 2025261 PMAQI
7th Jul 2025302 PMAQI
7th Jul 2025293 PMAQI
7th Jul 2025284 PMAQI
7th Jul 2025285 PMAQI
7th Jul 2025296 PMAQI
7th Jul 2025307 PMAQI
7th Jul 2025368 PMAQI
7th Jul 2025379 PMAQI
7th Jul 20253810 PMAQI
7th Jul 20253511 PMAQI
8th Jul 20253612 AMAQI
8th Jul 2025361 AMAQI
8th Jul 2025342 AMAQI
8th Jul 2025353 AMAQI
8th Jul 2025334 AMAQI
8th Jul 2025345 AMAQI
27°C24/31°C
8th Jul 2025366 AMAQI
8th Jul 2025367 AMAQI
8th Jul 2025428 AMAQI
8th Jul 2025479 AMAQI
8th Jul 20254310 AMAQI
8th Jul 20253911 AMAQI
8th Jul 20253812 PMAQI
8th Jul 2025371 PMAQI
8th Jul 2025362 PMAQI
8th Jul 2025363 PMAQI
8th Jul 2025344 PMAQI
8th Jul 2025355 PMAQI
8th Jul 2025356 PMAQI
8th Jul 2025377 PMAQI
8th Jul 2025398 PMAQI
8th Jul 2025389 PMAQI
8th Jul 20253710 PMAQI
8th Jul 20253911 PMAQI
9th Jul 20254212 AMAQI
9th Jul 2025371 AMAQI
9th Jul 2025422 AMAQI
9th Jul 2025403 AMAQI
9th Jul 2025384 AMAQI
9th Jul 2025375 AMAQI
29°C24/34°C
9th Jul 2025366 AMAQI
9th Jul 2025367 AMAQI
9th Jul 2025478 AMAQI
9th Jul 2025499 AMAQI
9th Jul 20255210 AMAQI
9th Jul 20254911 AMAQI
9th Jul 20254212 PMAQI
9th Jul 2025401 PMAQI
9th Jul 2025382 PMAQI
9th Jul 2025413 PMAQI
9th Jul 2025404 PMAQI
9th Jul 2025415 PMAQI
9th Jul 2025406 PMAQI
9th Jul 2025387 PMAQI
9th Jul 2025408 PMAQI
9th Jul 2025419 PMAQI
9th Jul 20254010 PMAQI
9th Jul 20253911 PMAQI
10th Jul 20253912 AMAQI
10th Jul 2025411 AMAQI
10th Jul 2025412 AMAQI
10th Jul 2025403 AMAQI
10th Jul 2025404 AMAQI
10th Jul 2025415 AMAQI
28°C25/33°C
10th Jul 2025426 AMAQI
10th Jul 2025407 AMAQI
10th Jul 2025358 AMAQI
10th Jul 2025419 AMAQI
10th Jul 20254510 AMAQI
10th Jul 20255011 AMAQI
10th Jul 20254512 PMAQI
10th Jul 2025461 PMAQI
10th Jul 2025422 PMAQI
10th Jul 2025423 PMAQI
10th Jul 2025434 PMAQI
10th Jul 2025385 PMAQI
10th Jul 2025366 PMAQI
10th Jul 2025377 PMAQI
10th Jul 2025408 PMAQI
10th Jul 2025409 PMAQI
10th Jul 20254010 PMAQI
10th Jul 20254811 PMAQI
11th Jul 20254712 AMAQI
11th Jul 2025461 AMAQI
11th Jul 2025472 AMAQI
11th Jul 2025463 AMAQI
11th Jul 2025484 AMAQI
11th Jul 2025465 AMAQI
28°C25/33°C
11th Jul 2025476 AMAQI
11th Jul 2025487 AMAQI
11th Jul 2025488 AMAQI
11th Jul 2025389 AMAQI
11th Jul 20254010 AMAQI
11th Jul 20253811 AMAQI
11th Jul 20254312 PMAQI
11th Jul 2025421 PMAQI
11th Jul 2025422 PMAQI
11th Jul 2025443 PMAQI
11th Jul 2025464 PMAQI
11th Jul 2025505 PMAQI
11th Jul 2025496 PMAQI
11th Jul 2025507 PMAQI
11th Jul 2025488 PMAQI
11th Jul 2025469 PMAQI
11th Jul 20254610 PMAQI
11th Jul 20254711 PMAQI
12th Jul 20254712 AMAQI
12th Jul 2025471 AMAQI
12th Jul 2025502 AMAQI
12th Jul 2025503 AMAQI
12th Jul 2025484 AMAQI
12th Jul 2025495 AMAQI
27°C25/30°C
12th Jul 2025486 AMAQI
12th Jul 2025487 AMAQI
12th Jul 2025408 AMAQI
12th Jul 2025369 AMAQI
12th Jul 20253610 AMAQI
12th Jul 20253511 AMAQI
12th Jul 20254112 PMAQI
12th Jul 2025381 PMAQI
12th Jul 2025392 PMAQI
12th Jul 2025363 PMAQI
12th Jul 2025364 PMAQI
12th Jul 2025375 PMAQI
12th Jul 2025366 PMAQI
12th Jul 2025377 PMAQI
12th Jul 2025478 PMAQI
12th Jul 2025499 PMAQI
12th Jul 20255010 PMAQI
12th Jul 20254911 PMAQI
13th Jul 20255112 AMAQI
13th Jul 2025521 AMAQI
13th Jul 2025512 AMAQI
13th Jul 2025503 AMAQI
13th Jul 2025494 AMAQI
13th Jul 2025495 AMAQI
27°C24/31°C
13th Jul 2025486 AMAQI
13th Jul 2025487 AMAQI
13th Jul 2025438 AMAQI
13th Jul 2025359 AMAQI
13th Jul 20253810 AMAQI
13th Jul 20254311 AMAQI
13th Jul 20254612 PMAQI
13th Jul 2025451 PMAQI
13th Jul 2025492 PMAQI
13th Jul 2025483 PMAQI
13th Jul 2025444 PMAQI
13th Jul 2025465 PMAQI
13th Jul 2025446 PMAQI
13th Jul 2025467 PMAQI
13th Jul 2025508 PMAQI
13th Jul 2025519 PMAQI
13th Jul 20255010 PMAQI
13th Jul 20255011 PMAQI
14th Jul 20254612 AMAQI
14th Jul 2025501 AMAQI
14th Jul 2025522 AMAQI
14th Jul 2025533 AMAQI
14th Jul 2025514 AMAQI
14th Jul 2025505 AMAQI
28°C25/33°C
14th Jul 2025506 AMAQI
14th Jul 2025507 AMAQI
14th Jul 2025428 AMAQI
14th Jul 2025429 AMAQI
14th Jul 20254110 AMAQI
14th Jul 20253411 AMAQI
14th Jul 20254212 PMAQI
14th Jul 2025411 PMAQI
14th Jul 2025422 PMAQI
14th Jul 2025473 PMAQI
14th Jul 2025504 PMAQI
14th Jul 2025525 PMAQI
14th Jul 2025486 PMAQI
14th Jul 2025487 PMAQI
14th Jul 2025518 PMAQI
14th Jul 2025529 PMAQI
14th Jul 20255210 PMAQI
14th Jul 20255211 PMAQI
15th Jul 20255112 AMAQI
15th Jul 2025501 AMAQI
15th Jul 2025522 AMAQI
15th Jul 2025533 AMAQI
15th Jul 2025534 AMAQI
15th Jul 2025535 AMAQI
28°C25/33°C
15th Jul 2025536 AMAQI
15th Jul 2025547 AMAQI
15th Jul 2025588 AMAQI
15th Jul 2025629 AMAQI
15th Jul 20256010 AMAQI
15th Jul 20255311 AMAQI
15th Jul 20255412 PMAQI
15th Jul 2025511 PMAQI
15th Jul 2025442 PMAQI
15th Jul 2025443 PMAQI
15th Jul 2025464 PMAQI
15th Jul 2025445 PMAQI
15th Jul 2025446 PMAQI
15th Jul 2025457 PMAQI
15th Jul 2025528 PMAQI
15th Jul 2025529 PMAQI
15th Jul 20255210 PMAQI
15th Jul 20255211 PMAQI
16th Jul 20255212 AMAQI
16th Jul 2025521 AMAQI
16th Jul 2025522 AMAQI
16th Jul 2025523 AMAQI
16th Jul 2025534 AMAQI
16th Jul 2025535 AMAQI
29°C25/34°C
16th Jul 2025536 AMAQI
16th Jul 2025537 AMAQI
16th Jul 2025528 AMAQI
16th Jul 2025469 AMAQI
16th Jul 20254910 AMAQI
16th Jul 20255111 AMAQI
16th Jul 20255212 PMAQI
16th Jul 2025521 PMAQI
16th Jul 2025472 PMAQI
16th Jul 2025423 PMAQI
16th Jul 2025434 PMAQI
16th Jul 2025435 PMAQI
16th Jul 2025446 PMAQI
16th Jul 2025507 PMAQI
16th Jul 2025518 PMAQI
16th Jul 2025529 PMAQI
16th Jul 20255210 PMAQI
16th Jul 20255211 PMAQI
17th Jul 20255212 AMAQI
17th Jul 2025521 AMAQI
17th Jul 2025522 AMAQI
17th Jul 2025523 AMAQI
17th Jul 2025524 AMAQI
17th Jul 2025525 AMAQI
29°C25/35°C
17th Jul 2025526 AMAQI
17th Jul 2025527 AMAQI
17th Jul 2025598 AMAQI
17th Jul 2025579 AMAQI
17th Jul 20255510 AMAQI
17th Jul 20255211 AMAQI
17th Jul 20254212 PMAQI
17th Jul 2025421 PMAQI
17th Jul 2025412 PMAQI
17th Jul 2025383 PMAQI
17th Jul 2025424 PMAQI
17th Jul 2025385 PMAQI
17th Jul 2025406 PMAQI
17th Jul 2025457 PMAQI
17th Jul 2025508 PMAQI
17th Jul 2025509 PMAQI
17th Jul 20255110 PMAQI
17th Jul 20255211 PMAQI
18th Jul 20255212 AMAQI
18th Jul 2025521 AMAQI
18th Jul 2025522 AMAQI
18th Jul 2025523 AMAQI
18th Jul 2025524 AMAQI
18th Jul 2025525 AMAQI
29°C25/34°C
18th Jul 2025526 AMAQI
18th Jul 2025527 AMAQI
18th Jul 2025438 AMAQI
18th Jul 2025409 AMAQI
18th Jul 20254010 AMAQI
18th Jul 20254011 AMAQI
18th Jul 20254612 PMAQI
18th Jul 2025481 PMAQI
18th Jul 2025452 PMAQI
18th Jul 2025403 PMAQI
18th Jul 2025384 PMAQI
18th Jul 2025355 PMAQI
18th Jul 2025346 PMAQI
18th Jul 2025417 PMAQI
18th Jul 2025498 PMAQI
18th Jul 2025519 PMAQI
18th Jul 20255210 PMAQI
18th Jul 20255311 PMAQI
19th Jul 20255412 AMAQI
19th Jul 2025531 AMAQI
19th Jul 2025522 AMAQI
19th Jul 2025523 AMAQI
19th Jul 2025524 AMAQI
19th Jul 2025525 AMAQI
29°C26/33°C
19th Jul 2025526 AMAQI
19th Jul 2025527 AMAQI
19th Jul 2025348 AMAQI
19th Jul 2025269 AMAQI
19th Jul 20253610 AMAQI
19th Jul 20253711 AMAQI
19th Jul 20254312 PMAQI
19th Jul 2025451 PMAQI
19th Jul 2025392 PMAQI
19th Jul 2025323 PMAQI
19th Jul 2025304 PMAQI
19th Jul 2025315 PMAQI
19th Jul 2025346 PMAQI
19th Jul 2025387 PMAQI
19th Jul 2025518 PMAQI
19th Jul 2025529 PMAQI
19th Jul 20255110 PMAQI
19th Jul 20255011 PMAQI
20th Jul 20255112 AMAQI
20th Jul 2025521 AMAQI
20th Jul 2025522 AMAQI
20th Jul 2025523 AMAQI
20th Jul 2025534 AMAQI
20th Jul 2025525 AMAQI
25°C24/26°C
20th Jul 2025526 AMAQI
20th Jul 2025537 AMAQI
20th Jul 2025388 AMAQI
20th Jul 2025249 AMAQI
20th Jul 20252210 AMAQI
20th Jul 20252111 AMAQI
20th Jul 20252812 PMAQI
20th Jul 2025341 PMAQI
20th Jul 2025362 PMAQI
20th Jul 2025353 PMAQI
20th Jul 2025324 PMAQI
20th Jul 2025315 PMAQI
20th Jul 2025316 PMAQI
20th Jul 2025367 PMAQI
20th Jul 2025468 PMAQI
20th Jul 2025479 PMAQI
20th Jul 20254610 PMAQI
20th Jul 20254711 PMAQI
21st Jul 20254612 AMAQI
21st Jul 2025501 AMAQI
21st Jul 2025522 AMAQI
21st Jul 2025503 AMAQI
21st Jul 2025504 AMAQI
21st Jul 2025515 AMAQI
25°C24/27°C
21st Jul 2025506 AMAQI
21st Jul 2025497 AMAQI
21st Jul 2025308 AMAQI
21st Jul 2025189 AMAQI
21st Jul 20252110 AMAQI
21st Jul 20252411 AMAQI
21st Jul 20252812 PMAQI
21st Jul 2025261 PMAQI
21st Jul 2025252 PMAQI
21st Jul 2025233 PMAQI
21st Jul 2025244 PMAQI
21st Jul 2025235 PMAQI
21st Jul 2025246 PMAQI
21st Jul 2025327 PMAQI
21st Jul 2025448 PMAQI
21st Jul 2025449 PMAQI
21st Jul 20254510 PMAQI
21st Jul 20254311 PMAQI
22nd Jul 20254512 AMAQI
22nd Jul 2025481 AMAQI
22nd Jul 2025502 AMAQI
22nd Jul 2025483 AMAQI
22nd Jul 2025464 AMAQI
22nd Jul 2025445 AMAQI
25°C24/26°C
22nd Jul 2025456 AMAQI
22nd Jul 2025447 AMAQI
22nd Jul 2025248 AMAQI
22nd Jul 2025189 AMAQI
22nd Jul 20252110 AMAQI
22nd Jul 20252211 AMAQI
22nd Jul 20252812 PMAQI
22nd Jul 2025281 PMAQI
22nd Jul 2025282 PMAQI
22nd Jul 2025263 PMAQI
22nd Jul 2025264 PMAQI
22nd Jul 2025255 PMAQI
22nd Jul 2025246 PMAQI
22nd Jul 2025317 PMAQI
22nd Jul 2025428 PMAQI
22nd Jul 2025439 PMAQI
22nd Jul 20254310 PMAQI
22nd Jul 20254211 PMAQI
23rd Jul 20254212 AMAQI
23rd Jul 2025461 AMAQI
23rd Jul 2025462 AMAQI
23rd Jul 2025453 AMAQI
23rd Jul 2025434 AMAQI
23rd Jul 2025445 AMAQI
26°C24/31°C
23rd Jul 2025436 AMAQI
23rd Jul 2025437 AMAQI
23rd Jul 2025288 AMAQI
23rd Jul 2025339 AMAQI
23rd Jul 20252410 AMAQI
23rd Jul 20252411 AMAQI
23rd Jul 20252812 PMAQI
23rd Jul 2025261 PMAQI
23rd Jul 2025242 PMAQI
23rd Jul 2025233 PMAQI
23rd Jul 2025234 PMAQI
23rd Jul 2025235 PMAQI
23rd Jul 2025246 PMAQI
23rd Jul 2025317 PMAQI
23rd Jul 2025398 PMAQI
23rd Jul 2025409 PMAQI
23rd Jul 20253810 PMAQI
23rd Jul 20253711 PMAQI
24th Jul 20253712 AMAQI
24th Jul 2025381 AMAQI
24th Jul 2025382 AMAQI
24th Jul 2025393 AMAQI
24th Jul 2025444 AMAQI
24th Jul 2025465 AMAQI
27°C25/32°C
24th Jul 2025456 AMAQI
24th Jul 2025447 AMAQI
24th Jul 2025428 AMAQI
24th Jul 2025369 AMAQI
24th Jul 20252810 AMAQI
24th Jul 20252811 AMAQI
24th Jul 20253012 PMAQI
24th Jul 2025341 PMAQI
24th Jul 2025322 PMAQI
24th Jul 2025303 PMAQI
24th Jul 2025294 PMAQI
24th Jul 2025285 PMAQI
24th Jul 2025286 PMAQI
24th Jul 2025307 PMAQI
24th Jul 2025368 PMAQI
24th Jul 2025379 PMAQI
24th Jul 20253910 PMAQI
24th Jul 20253611 PMAQI
25th Jul 20253612 AMAQI
25th Jul 2025381 AMAQI
25th Jul 2025402 AMAQI
25th Jul 2025403 AMAQI
25th Jul 2025394 AMAQI
25th Jul 2025385 AMAQI
26°C24/29°C
25th Jul 2025396 AMAQI
25th Jul 2025397 AMAQI
25th Jul 2025238 AMAQI
25th Jul 2025189 AMAQI
25th Jul 20252010 AMAQI
25th Jul 20252611 AMAQI
25th Jul 20252412 PMAQI
25th Jul 2025261 PMAQI
25th Jul 2025262 PMAQI
25th Jul 2025243 PMAQI
25th Jul 2025254 PMAQI
25th Jul 2025295 PMAQI
25th Jul 2025336 PMAQI
25th Jul 2025377 PMAQI
25th Jul 2025368 PMAQI
25th Jul 2025409 PMAQI
25th Jul 20255010 PMAQI
25th Jul 20254411 PMAQI
26th Jul 20254612 AMAQI
26th Jul 2025421 AMAQI
26th Jul 2025422 AMAQI
26th Jul 2025443 AMAQI
26th Jul 2025434 AMAQI
26th Jul 2025445 AMAQI
27°C24/32°C
26th Jul 2025426 AMAQI
26th Jul 2025417 AMAQI
26th Jul 2025248 AMAQI
26th Jul 2025209 AMAQI
26th Jul 20252010 AMAQI
26th Jul 20252111 AMAQI
26th Jul 20252712 PMAQI
26th Jul 2025291 PMAQI
26th Jul 2025302 PMAQI
26th Jul 2025333 PMAQI
26th Jul 2025354 PMAQI
26th Jul 2025345 PMAQI
26th Jul 2025346 PMAQI
26th Jul 2025397 PMAQI
26th Jul 2025418 PMAQI
26th Jul 2025409 PMAQI
26th Jul 20253910 PMAQI
26th Jul 20254011 PMAQI
27th Jul 20254012 AMAQI
27th Jul 2025451 AMAQI
27th Jul 2025462 AMAQI
27th Jul 2025443 AMAQI
27th Jul 2025404 AMAQI
27th Jul 2025405 AMAQI
28°C24/33°C
27th Jul 2025406 AMAQI
27th Jul 2025407 AMAQI
27th Jul 2025418 AMAQI
27th Jul 2025439 AMAQI
27th Jul 20254010 AMAQI
27th Jul 20253811 AMAQI
27th Jul 20253612 PMAQI
27th Jul 2025361 PMAQI
27th Jul 2025362 PMAQI
27th Jul 2025363 PMAQI
27th Jul 2025384 PMAQI
27th Jul 2025375 PMAQI
27th Jul 2025366 PMAQI
27th Jul 2025347 PMAQI
27th Jul 2025398 PMAQI
27th Jul 2025419 PMAQI
27th Jul 20254810 PMAQI
27th Jul 20254411 PMAQI
28th Jul 20254212 AMAQI
28th Jul 2025401 AMAQI
28th Jul 2025432 AMAQI
28th Jul 2025423 AMAQI
28th Jul 2025424 AMAQI
28th Jul 2025415 AMAQI
28°C25/33°C
28th Jul 2025426 AMAQI
28th Jul 2025427 AMAQI
28th Jul 2025348 AMAQI
28th Jul 2025339 AMAQI
28th Jul 20253110 AMAQI
28th Jul 20252911 AMAQI
28th Jul 20253012 PMAQI
28th Jul 2025271 PMAQI
28th Jul 2025202 PMAQI
28th Jul 2025193 PMAQI
28th Jul 2025214 PMAQI
28th Jul 2025245 PMAQI
28th Jul 2025326 PMAQI
28th Jul 2025317 PMAQI
28th Jul 2025348 PMAQI
28th Jul 2025389 PMAQI
28th Jul 20253810 PMAQI
28th Jul 20253911 PMAQI
29th Jul 20253912 AMAQI
29th Jul 2025421 AMAQI
29th Jul 2025442 AMAQI
29th Jul 2025423 AMAQI
29th Jul 2025404 AMAQI
29th Jul 2025395 AMAQI
27°C24/32°C
29th Jul 2025396 AMAQI
29th Jul 2025387 AMAQI
29th Jul 2025298 AMAQI
29th Jul 2025289 AMAQI
29th Jul 20252510 AMAQI
29th Jul 20252411 AMAQI
29th Jul 20252412 PMAQI
29th Jul 2025241 PMAQI
29th Jul 2025262 PMAQI
29th Jul 2025273 PMAQI
29th Jul 2025234 PMAQI
29th Jul 2025265 PMAQI
29th Jul 2025356 PMAQI
29th Jul 2025367 PMAQI
29th Jul 2025378 PMAQI
29th Jul 2025399 PMAQI
29th Jul 20253810 PMAQI
29th Jul 20254011 PMAQI
30th Jul 20254012 AMAQI
30th Jul 2025411 AMAQI
30th Jul 2025392 AMAQI
30th Jul 2025383 AMAQI
30th Jul 2025364 AMAQI
30th Jul 2025385 AMAQI
28°C25/33°C
30th Jul 2025386 AMAQI
30th Jul 2025397 AMAQI
30th Jul 2025308 AMAQI
30th Jul 2025349 AMAQI
30th Jul 20253810 AMAQI
30th Jul 20253411 AMAQI
30th Jul 20253312 PMAQI
30th Jul 2025301 PMAQI
30th Jul 2025322 PMAQI
30th Jul 2025313 PMAQI
30th Jul 2025244 PMAQI
30th Jul 2025245 PMAQI
30th Jul 2025286 PMAQI
30th Jul 2025307 PMAQI
30th Jul 2025378 PMAQI
30th Jul 2025379 PMAQI
30th Jul 20253810 PMAQI
30th Jul 20253811 PMAQI
31st Jul 20254212 AMAQI
31st Jul 2025381 AMAQI
31st Jul 2025412 AMAQI
31st Jul 2025403 AMAQI
31st Jul 2025404 AMAQI
31st Jul 2025405 AMAQI
29°C25/34°C
31st Jul 2025406 AMAQI
31st Jul 2025407 AMAQI
31st Jul 2025408 AMAQI
31st Jul 2025409 AMAQI
31st Jul 20254510 AMAQI
31st Jul 20253311 AMAQI
31st Jul 20253012 PMAQI
31st Jul 2025281 PMAQI
31st Jul 2025332 PMAQI
31st Jul 2025343 PMAQI
31st Jul 2025314 PMAQI
31st Jul 2025325 PMAQI
31st Jul 2025356 PMAQI
31st Jul 2025407 PMAQI
31st Jul 2025588 PMAQI
31st Jul 2025579 PMAQI
31st Jul 20255610 PMAQI
31st Jul 20255611 PMAQI
1st Aug 20255612 AMAQI
1st Aug 2025581 AMAQI
1st Aug 2025572 AMAQI
1st Aug 2025553 AMAQI
1st Aug 2025564 AMAQI
1st Aug 2025565 AMAQI
29°C25/35°C
1st Aug 2025566 AMAQI
1st Aug 2025567 AMAQI
1st Aug 2025598 AMAQI
1st Aug 2025609 AMAQI
1st Aug 20255710 AMAQI
1st Aug 20255411 AMAQI
1st Aug 20255212 PMAQI
1st Aug 2025521 PMAQI
1st Aug 2025482 PMAQI
1st Aug 2025503 PMAQI
1st Aug 2025514 PMAQI
1st Aug 2025465 PMAQI
1st Aug 2025486 PMAQI
1st Aug 2025527 PMAQI
1st Aug 2025558 PMAQI
1st Aug 2025569 PMAQI
1st Aug 20255510 PMAQI
1st Aug 20255511 PMAQI
2nd Aug 20255812 AMAQI
2nd Aug 2025561 AMAQI
2nd Aug 2025562 AMAQI
2nd Aug 2025563 AMAQI
2nd Aug 2025564 AMAQI
2nd Aug 2025565 AMAQI
28°C25/33°C
2nd Aug 2025566 AMAQI
2nd Aug 2025567 AMAQI
2nd Aug 2025468 AMAQI
2nd Aug 2025549 AMAQI
2nd Aug 20255410 AMAQI
2nd Aug 20255411 AMAQI
2nd Aug 20255212 PMAQI
2nd Aug 2025521 PMAQI
2nd Aug 2025522 PMAQI
2nd Aug 2025533 PMAQI
2nd Aug 2025384 PMAQI
2nd Aug 2025405 PMAQI
2nd Aug 2025506 PMAQI
2nd Aug 2025517 PMAQI
2nd Aug 2025548 PMAQI
2nd Aug 2025579 PMAQI
2nd Aug 20255710 PMAQI
2nd Aug 20255611 PMAQI
3rd Aug 20255612 AMAQI
3rd Aug 2025581 AMAQI
3rd Aug 2025582 AMAQI
3rd Aug 2025563 AMAQI
3rd Aug 2025564 AMAQI
3rd Aug 2025565 AMAQI
--°C/°C
3rd Aug 2025576 AMAQI
6 AM12 PM
7 PM
12 AM
5 AM
--°C/°C
Day time
Avg. Highest Time
6 AM - 7 AM
45AQI
2 hours / Day
60 hours / Month
Avg. Lowest Time
8 AM - 6 PM
36AQI
11 hours / Day
330 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 6 AM to 7 AM (Avg. 45), while the lowest AQI was between 8 AM to 6 PM (Avg. 36).
Night time
Avg. Highest Time
12 AM - 11 PM
45AQI
10 hours / Day
300 hours / Month
Avg. Lowest Time
12 AM - 11 PM
45AQI
10 hours / Day
300 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 12 AM to 11 PM (Avg. 45), while the lowest AQI was between 12 AM to 11 PM (Avg. 45).
2025 Days Vs Air Quality
Tunchang County Hongqi Middle School Substation, Jiaji, Hainan, China
2025
42%
90
52%
111
6%
12
Total number of days with different AQI categories in last 214 days in 2025 (151 days remaining)
Good
90 DaysModerate
111 DaysPoor
12 DaysUnhealthy
0 DaysSevere
0 DaysHazardous
0 DaysUnder WHO’s Safe Air Quality Limits: 42%
Health Risk Level:
Significant
In 2025, 42% of 214 days were within WHO’s safe air quality limits, and 58% exceeded them. The risk of health issues is Significant, especially for those with existing respiratory or heart conditions.
Annual Air Quality Insights
Tunchang County Hongqi Middle School Substation, 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.
1st January 2025
115AQI
115AQI
2nd January 2025
102AQI
102AQI
3rd January 2025
102AQI
102AQI
4th January 2025
93AQI
93AQI
5th January 2025
110AQI
110AQI
6th January 2025
108AQI
108AQI
7th January 2025
88AQI
88AQI
8th January 2025
87AQI
87AQI
9th January 2025
103AQI
103AQI
10th January 2025
117AQI
117AQI
11th January 2025
92AQI
92AQI
12th January 2025
87AQI
87AQI
13th January 2025
82AQI
82AQI
14th January 2025
74AQI
74AQI
15th January 2025
85AQI
85AQI
16th January 2025
92AQI
92AQI
17th January 2025
96AQI
96AQI
18th January 2025
84AQI
84AQI
19th January 2025
97AQI
97AQI
20th January 2025
90AQI
90AQI
21st January 2025
80AQI
80AQI
22nd January 2025
89AQI
89AQI
23rd January 2025
74AQI
74AQI
24th January 2025
61AQI
61AQI
25th January 2025
57AQI
57AQI
26th January 2025
53AQI
53AQI
27th January 2025
61AQI
61AQI
28th January 2025
67AQI
67AQI
29th January 2025
79AQI
79AQI
30th January 2025
70AQI
70AQI
31st January 2025
61AQI
61AQI
1st February 2025
47AQI
47AQI
2nd February 2025
49AQI
49AQI
3rd February 2025
53AQI
53AQI
4th February 2025
49AQI
49AQI
5th February 2025
55AQI
55AQI
6th February 2025
60AQI
60AQI
7th February 2025
75AQI
75AQI
8th February 2025
61AQI
61AQI
9th February 2025
74AQI
74AQI
10th February 2025
62AQI
62AQI
11th February 2025
58AQI
58AQI
12th February 2025
48AQI
48AQI
13th February 2025
61AQI
61AQI
14th February 2025
47AQI
47AQI
15th February 2025
67AQI
67AQI
16th February 2025
47AQI
47AQI
17th February 2025
61AQI
61AQI
18th February 2025
74AQI
74AQI
19th February 2025
71AQI
71AQI
20th February 2025
62AQI
62AQI
21st February 2025
63AQI
63AQI
22nd February 2025
47AQI
47AQI
23rd February 2025
49AQI
49AQI
24th February 2025
53AQI
53AQI
25th February 2025
50AQI
50AQI
26th February 2025
64AQI
64AQI
27th February 2025
61AQI
61AQI
28th February 2025
56AQI
56AQI
1st March 2025
56AQI
56AQI
2nd March 2025
54AQI
54AQI
3rd March 2025
65AQI
65AQI
4th March 2025
61AQI
61AQI
5th March 2025
56AQI
56AQI
6th March 2025
35AQI
35AQI
7th March 2025
41AQI
41AQI
8th March 2025
32AQI
32AQI
9th March 2025
56AQI
56AQI
10th March 2025
57AQI
57AQI
11th March 2025
56AQI
56AQI
12th March 2025
48AQI
48AQI
13th March 2025
48AQI
48AQI
14th March 2025
42AQI
42AQI
15th March 2025
62AQI
62AQI
16th March 2025
54AQI
54AQI
17th March 2025
70AQI
70AQI
18th March 2025
73AQI
73AQI
19th March 2025
85AQI
85AQI
20th March 2025
78AQI
78AQI
21st March 2025
83AQI
83AQI
22nd March 2025
77AQI
77AQI
23rd March 2025
78AQI
78AQI
24th March 2025
78AQI
78AQI
25th March 2025
83AQI
83AQI
26th March 2025
77AQI
77AQI
27th March 2025
88AQI
88AQI
28th March 2025
79AQI
79AQI
29th March 2025
66AQI
66AQI
30th March 2025
41AQI
41AQI
31st March 2025
44AQI
44AQI
1st April 2025
55AQI
55AQI
2nd April 2025
65AQI
65AQI
3rd April 2025
62AQI
62AQI
4th April 2025
59AQI
59AQI
5th April 2025
66AQI
66AQI
6th April 2025
47AQI
47AQI
7th April 2025
65AQI
65AQI
8th April 2025
57AQI
57AQI
9th April 2025
67AQI
67AQI
10th April 2025
69AQI
69AQI
11th April 2025
71AQI
71AQI
12th April 2025
65AQI
65AQI
13th April 2025
128AQI
128AQI
14th April 2025
123AQI
123AQI
15th April 2025
125AQI
125AQI
16th April 2025
118AQI
118AQI
17th April 2025
110AQI
110AQI
18th April 2025
77AQI
77AQI
19th April 2025
61AQI
61AQI
20th April 2025
66AQI
66AQI
21st April 2025
61AQI
61AQI
22nd April 2025
68AQI
68AQI
23rd April 2025
58AQI
58AQI
24th April 2025
66AQI
66AQI
25th April 2025
66AQI
66AQI
26th April 2025
58AQI
58AQI
27th April 2025
56AQI
56AQI
28th April 2025
54AQI
54AQI
29th April 2025
52AQI
52AQI
30th April 2025
52AQI
52AQI
1st May 2025
57AQI
57AQI
2nd May 2025
56AQI
56AQI
3rd May 2025
61AQI
61AQI
4th May 2025
63AQI
63AQI
5th May 2025
55AQI
55AQI
6th May 2025
61AQI
61AQI
7th May 2025
63AQI
63AQI
8th May 2025
59AQI
59AQI
9th May 2025
56AQI
56AQI
10th May 2025
52AQI
52AQI
11th May 2025
56AQI
56AQI
12th May 2025
62AQI
62AQI
13th May 2025
58AQI
58AQI
14th May 2025
49AQI
49AQI
15th May 2025
40AQI
40AQI
16th May 2025
41AQI
41AQI
17th May 2025
42AQI
42AQI
18th May 2025
45AQI
45AQI
19th May 2025
45AQI
45AQI
20th May 2025
48AQI
48AQI
21st May 2025
47AQI
47AQI
22nd May 2025
44AQI
44AQI
23rd May 2025
37AQI
37AQI
24th May 2025
37AQI
37AQI
25th May 2025
49AQI
49AQI
26th May 2025
67AQI
67AQI
27th May 2025
54AQI
54AQI
28th May 2025
46AQI
46AQI
29th May 2025
46AQI
46AQI
30th May 2025
48AQI
48AQI
31st May 2025
39AQI
39AQI
1st June 2025
43AQI
43AQI
2nd June 2025
39AQI
39AQI
3rd June 2025
51AQI
51AQI
4th June 2025
53AQI
53AQI
5th June 2025
49AQI
49AQI
6th June 2025
44AQI
44AQI
7th June 2025
44AQI
44AQI
8th June 2025
45AQI
45AQI
9th June 2025
51AQI
51AQI
10th June 2025
54AQI
54AQI
11th June 2025
47AQI
47AQI
12th June 2025
35AQI
35AQI
13th June 2025
32AQI
32AQI
14th June 2025
33AQI
33AQI
15th June 2025
35AQI
35AQI
16th June 2025
37AQI
37AQI
17th June 2025
39AQI
39AQI
18th June 2025
38AQI
38AQI
19th June 2025
37AQI
37AQI
20th June 2025
35AQI
35AQI
21st June 2025
36AQI
36AQI
22nd June 2025
42AQI
42AQI
23rd June 2025
36AQI
36AQI
24th June 2025
35AQI
35AQI
25th June 2025
34AQI
34AQI
26th June 2025
32AQI
32AQI
27th June 2025
29AQI
29AQI
28th June 2025
30AQI
30AQI
29th June 2025
31AQI
31AQI
30th June 2025
30AQI
30AQI
1st July 2025
30AQI
30AQI
2nd July 2025
27AQI
27AQI
3rd July 2025
26AQI
26AQI
4th July 2025
29AQI
29AQI
5th July 2025
31AQI
31AQI
6th July 2025
34AQI
34AQI
7th July 2025
33AQI
33AQI
8th July 2025
37AQI
37AQI
9th July 2025
41AQI
41AQI
10th July 2025
41AQI
41AQI
11th July 2025
47AQI
47AQI
12th July 2025
44AQI
44AQI
13th July 2025
48AQI
48AQI
14th July 2025
48AQI
48AQI
15th July 2025
51AQI
51AQI
16th July 2025
50AQI
50AQI
17th July 2025
49AQI
49AQI
18th July 2025
48AQI
48AQI
19th July 2025
46AQI
46AQI
20th July 2025
43AQI
43AQI
21st July 2025
39AQI
39AQI
22nd July 2025
38AQI
38AQI
23rd July 2025
36AQI
36AQI
24th July 2025
36AQI
36AQI
25th July 2025
35AQI
35AQI
26th July 2025
39AQI
39AQI
27th July 2025
40AQI
40AQI
28th July 2025
36AQI
36AQI
29th July 2025
35AQI
35AQI
30th July 2025
36AQI
36AQI
31st July 2025
41AQI
41AQI
1st August 2025
55AQI
55AQI
86AQI
58AQI
62AQI
72AQI
51AQI
39AQI
39AQI
55AQI
No. of days
Jan.Feb.Mar.Apr.MayJun.Jul.Aug.Sep.Oct.Nov.Dec.Total Days
202558AQI
24
7
9
19
8
23
1
24
5
16
15
26
4
30
1
1
90
111
12
Highest AQI recorded in
January86AQI
Lowest AQI recorded in
July39AQI
202449AQI
4
17
11
6
10
12
10
9
16
7
30
31
30
1
21
8
18
7
6
20
10
26
5
201
103
11
Highest AQI recorded in
December83AQI
Lowest AQI recorded in
July31AQI
202361AQI
1
8
1
1
5
8
2
1
1
1
5
1
1
9
2
3
3
30
25
57
1
Highest AQI recorded in
November80AQI
Lowest AQI recorded in
July19AQI
202247AQI
9
17
2
12
9
9
22
12
18
29
2
28
2
18
1
2
7
11
14
19
4
5
7
1
155
102
3
Highest AQI recorded in
September65AQI
Lowest AQI recorded in
July27AQI
202154AQI
20
10
1
9
19
9
21
1
13
17
26
5
17
13
30
1
28
25
5
21
10
9
19
2
3
24
4
190
154
17
1
Highest AQI recorded in
January93AQI
Lowest AQI recorded in
August33AQI
202056AQI
3
5
3
10
9
7
28
30
1
24
7
18
12
9
21
1
7
16
7
2
17
12
133
96
20
Highest AQI recorded in
December92AQI
Lowest AQI recorded in
June35AQI
Most & Least Polluted Years Over the Last 6 Years
Most Polluted Year Recorded
2023(Avg.)
61AQILeast Polluted Year Recorded
2022(Avg.)
47AQITunchang County Hongqi Middle School Substation's annual 2025 AQI (58) shows an average percentage change of 9.9% (worsened AQI) compared to previous years: 2020 (56), 2021 (54), 2022 (47), 2023 (61), 2024 (49).
