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HistoryAQIPM₂.₅PM₁₀COSO₂NO₂O₃

Institute Of Forestry Sub Station, Chongshan, 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+

July Air Quality Analysis

Institute Of Forestry Sub Station, Chongshan, Hainan, China

2022
2023
2024
2025
2026
AQI
.
Days

AQI Trends: Highest and Lowest

Highest AQI recorded on
5th Jul 2026
63AQI
Lowest AQI recorded on
9th Jul 2023
13AQI

Same Day Analysis (12th July):
On this day, AQI across the 5 years varied significantly: 2026 ranks 3rd highest AQI at 23 of Good air quality, showing improvement over 2025 and 2024 on the same day.

Day & Night AQI Trend: 11th Jul - 12th Jul 2026

Institute Of Forestry Sub Station, Chongshan, Hainan, China

AQI
Day
Night
.

6 AM11th Jul 2026

7 PM

5 AM12th Jul 2026

Day time
Avg. Highest Time
9AM11th Jul

36AQI

Avg. Lowest Time
6PM11th Jul

8AQI

Night time
Avg. Highest Time
1AM12th Jul

31AQI

Avg. Lowest Time
8PM11th Jul

20AQI

In the last 24 hours,

Institute Of Forestry Sub Station's AQI reached its highest point of 36 at 9 AM during the Day, while the lowest point, 8, was recorded at 6 PM during the Day between 11th Jul and 12th Jul 2026.

Day & Night AQI Trend : Jun - Jul 2026

Institute Of Forestry Sub Station, Chongshan, Hainan, China

JunJul
13th - 14th14th - 15th15th - 16th16th - 17th17th - 18th18th - 19th19th - 20th20th - 21st21st - 22nd22nd - 23rd23rd - 24th24th - 25th25th - 26th26th - 27th27th - 28th28th - 29th29th - 30th30th - 01st01st - 02nd02nd - 03rd03rd - 04th04th - 05th05th - 06th06th - 07th07th - 08th08th - 09th09th - 10th10th - 11th11th - 12th12th
Day
Night
13th Jun 202696 AMAQI
13th Jun 2026117 AMAQI
13th Jun 2026118 AMAQI
13th Jun 2026189 AMAQI
13th Jun 20262010 AMAQI
13th Jun 20261811 AMAQI
13th Jun 20261212 PMAQI
13th Jun 2026151 PMAQI
13th Jun 2026272 PMAQI
13th Jun 2026363 PMAQI
13th Jun 2026544 PMAQI
13th Jun 2026645 PMAQI
13th Jun 2026686 PMAQI
13th Jun 2026667 PMAQI
13th Jun 2026668 PMAQI
13th Jun 2026539 PMAQI
13th Jun 20265410 PMAQI
13th Jun 20264011 PMAQI
14th Jun 20262912 AMAQI
14th Jun 2026181 AMAQI
14th Jun 2026102 AMAQI
14th Jun 2026133 AMAQI
14th Jun 2026144 AMAQI
14th Jun 2026105 AMAQI

26°C22/33°C

14th Jun 2026146 AMAQI
14th Jun 2026247 AMAQI
14th Jun 2026208 AMAQI
14th Jun 2026209 AMAQI
14th Jun 20261410 AMAQI
14th Jun 20262911 AMAQI
14th Jun 20262212 PMAQI
14th Jun 2026261 PMAQI
14th Jun 2026442 PMAQI
14th Jun 2026313 PMAQI
14th Jun 2026384 PMAQI
14th Jun 2026505 PMAQI
14th Jun 2026536 PMAQI
14th Jun 2026537 PMAQI
14th Jun 2026558 PMAQI
14th Jun 2026549 PMAQI
14th Jun 20264710 PMAQI
14th Jun 20264611 PMAQI
15th Jun 20264212 AMAQI
15th Jun 2026521 AMAQI
15th Jun 2026472 AMAQI
15th Jun 2026363 AMAQI
15th Jun 2026234 AMAQI
15th Jun 2026225 AMAQI

26°C22/32°C

15th Jun 2026226 AMAQI
15th Jun 2026277 AMAQI
15th Jun 2026338 AMAQI
15th Jun 2026369 AMAQI
15th Jun 20262910 AMAQI
15th Jun 20262611 AMAQI
15th Jun 20262812 PMAQI
15th Jun 2026271 PMAQI
15th Jun 2026292 PMAQI
15th Jun 2026313 PMAQI
15th Jun 2026384 PMAQI
15th Jun 2026445 PMAQI
15th Jun 2026566 PMAQI
15th Jun 2026567 PMAQI
15th Jun 2026588 PMAQI
15th Jun 2026569 PMAQI
15th Jun 20266010 PMAQI
15th Jun 20266011 PMAQI
16th Jun 20266612 AMAQI
16th Jun 2026571 AMAQI
16th Jun 2026542 AMAQI
16th Jun 2026423 AMAQI
16th Jun 2026254 AMAQI
16th Jun 2026175 AMAQI

27°C22/33°C

16th Jun 2026176 AMAQI
16th Jun 2026197 AMAQI
16th Jun 2026218 AMAQI
16th Jun 2026279 AMAQI
16th Jun 20262710 AMAQI
16th Jun 20262311 AMAQI
16th Jun 20262612 PMAQI
16th Jun 2026211 PMAQI
16th Jun 2026222 PMAQI
16th Jun 2026193 PMAQI
16th Jun 2026294 PMAQI
16th Jun 2026425 PMAQI
16th Jun 2026406 PMAQI
16th Jun 2026427 PMAQI
16th Jun 2026498 PMAQI
16th Jun 2026559 PMAQI
16th Jun 20265010 PMAQI
16th Jun 20264011 PMAQI
17th Jun 20263212 AMAQI
17th Jun 2026211 AMAQI
17th Jun 2026172 AMAQI
17th Jun 2026173 AMAQI
17th Jun 2026144 AMAQI
17th Jun 2026145 AMAQI

25°C22/30°C

17th Jun 2026166 AMAQI
17th Jun 2026167 AMAQI
17th Jun 2026148 AMAQI
17th Jun 2026169 AMAQI
17th Jun 20261810 AMAQI
17th Jun 20261511 AMAQI
17th Jun 20261712 PMAQI
17th Jun 2026201 PMAQI
17th Jun 2026182 PMAQI
17th Jun 2026203 PMAQI
17th Jun 2026214 PMAQI
17th Jun 2026235 PMAQI
17th Jun 2026256 PMAQI
17th Jun 2026297 PMAQI
17th Jun 2026318 PMAQI
17th Jun 2026369 PMAQI
17th Jun 20264410 PMAQI
17th Jun 20264611 PMAQI
18th Jun 20264012 AMAQI
18th Jun 2026311 AMAQI
18th Jun 2026252 AMAQI
18th Jun 2026283 AMAQI
18th Jun 2026194 AMAQI
18th Jun 2026175 AMAQI

25°C21/31°C

18th Jun 2026186 AMAQI
18th Jun 2026167 AMAQI
18th Jun 2026168 AMAQI
18th Jun 2026309 AMAQI
18th Jun 20262610 AMAQI
18th Jun 20262611 AMAQI
18th Jun 20262012 PMAQI
18th Jun 2026211 PMAQI
18th Jun 2026282 PMAQI
18th Jun 2026483 PMAQI
18th Jun 2026604 PMAQI
18th Jun 2026705 PMAQI
18th Jun 2026766 PMAQI
18th Jun 2026847 PMAQI
18th Jun 2026858 PMAQI
18th Jun 2026849 PMAQI
18th Jun 20267210 PMAQI
18th Jun 20266711 PMAQI
19th Jun 20266012 AMAQI
19th Jun 2026521 AMAQI
19th Jun 2026422 AMAQI
19th Jun 2026293 AMAQI
19th Jun 2026254 AMAQI
19th Jun 2026215 AMAQI

27°C22/34°C

19th Jun 2026236 AMAQI
19th Jun 2026227 AMAQI
19th Jun 2026258 AMAQI
19th Jun 2026269 AMAQI
19th Jun 20262410 AMAQI
19th Jun 20262211 AMAQI
19th Jun 20262212 PMAQI
19th Jun 2026301 PMAQI
19th Jun 2026302 PMAQI
19th Jun 2026513 PMAQI
19th Jun 2026554 PMAQI
19th Jun 2026765 PMAQI
19th Jun 2026526 PMAQI
19th Jun 2026207 PMAQI
19th Jun 2026208 PMAQI
19th Jun 2026489 PMAQI
19th Jun 20266910 PMAQI
19th Jun 20266711 PMAQI
20th Jun 20266412 AMAQI
20th Jun 2026491 AMAQI
20th Jun 2026272 AMAQI
20th Jun 2026253 AMAQI
20th Jun 2026194 AMAQI
20th Jun 2026195 AMAQI

27°C22/33°C

20th Jun 2026206 AMAQI
20th Jun 2026217 AMAQI
20th Jun 2026218 AMAQI
20th Jun 2026209 AMAQI
20th Jun 20262210 AMAQI
20th Jun 20262111 AMAQI
20th Jun 20262212 PMAQI
20th Jun 2026261 PMAQI
20th Jun 2026312 PMAQI
20th Jun 2026423 PMAQI
20th Jun 2026584 PMAQI
20th Jun 2026725 PMAQI
20th Jun 2026786 PMAQI
20th Jun 2026877 PMAQI
20th Jun 2026858 PMAQI
20th Jun 2026789 PMAQI
20th Jun 20267310 PMAQI
20th Jun 20266411 PMAQI
21st Jun 20265512 AMAQI
21st Jun 2026401 AMAQI
21st Jun 2026272 AMAQI
21st Jun 2026193 AMAQI
21st Jun 2026135 AMAQI

27°C22/33°C

21st Jun 2026126 AMAQI
21st Jun 2026127 AMAQI
21st Jun 2026158 AMAQI
21st Jun 2026169 AMAQI
21st Jun 20263010 AMAQI
21st Jun 20262011 AMAQI
21st Jun 20261812 PMAQI
21st Jun 2026221 PMAQI
21st Jun 2026222 PMAQI
21st Jun 2026233 PMAQI
21st Jun 2026344 PMAQI
21st Jun 2026505 PMAQI
21st Jun 2026606 PMAQI
21st Jun 2026687 PMAQI
21st Jun 2026718 PMAQI
21st Jun 2026669 PMAQI
21st Jun 20265910 PMAQI
21st Jun 20265111 PMAQI
22nd Jun 20264012 AMAQI
22nd Jun 2026321 AMAQI
22nd Jun 2026252 AMAQI
22nd Jun 2026143 AMAQI
22nd Jun 2026114 AMAQI
22nd Jun 2026125 AMAQI

27°C22/34°C

22nd Jun 2026166 AMAQI
22nd Jun 2026177 AMAQI
22nd Jun 2026168 AMAQI
22nd Jun 2026169 AMAQI
22nd Jun 20261610 AMAQI
22nd Jun 20261811 AMAQI
22nd Jun 20262512 PMAQI
22nd Jun 2026231 PMAQI
22nd Jun 2026222 PMAQI
22nd Jun 2026243 PMAQI
22nd Jun 2026284 PMAQI
22nd Jun 2026515 PMAQI
22nd Jun 2026606 PMAQI
22nd Jun 2026827 PMAQI
22nd Jun 2026838 PMAQI
22nd Jun 2026699 PMAQI
22nd Jun 20265710 PMAQI
22nd Jun 20265611 PMAQI
23rd Jun 20264912 AMAQI
23rd Jun 2026321 AMAQI
23rd Jun 2026212 AMAQI
23rd Jun 2026163 AMAQI
23rd Jun 2026314 AMAQI
23rd Jun 2026425 AMAQI

28°C22/35°C

23rd Jun 2026366 AMAQI
23rd Jun 2026427 AMAQI
23rd Jun 2026428 AMAQI
23rd Jun 2026389 AMAQI
23rd Jun 20262910 AMAQI
23rd Jun 20262511 AMAQI
23rd Jun 20262512 PMAQI
23rd Jun 2026221 PMAQI
23rd Jun 2026232 PMAQI
23rd Jun 2026273 PMAQI
23rd Jun 2026384 PMAQI
23rd Jun 2026365 PMAQI
23rd Jun 2026236 PMAQI
23rd Jun 2026217 PMAQI
23rd Jun 2026218 PMAQI
23rd Jun 2026219 PMAQI
23rd Jun 20262710 PMAQI
23rd Jun 20267211 PMAQI
24th Jun 20266912 AMAQI
24th Jun 2026661 AMAQI
24th Jun 2026382 AMAQI
24th Jun 2026273 AMAQI
24th Jun 2026254 AMAQI
24th Jun 2026275 AMAQI

27°C21/35°C

24th Jun 2026256 AMAQI
24th Jun 2026237 AMAQI
24th Jun 2026238 AMAQI
24th Jun 2026259 AMAQI
24th Jun 20262510 AMAQI
24th Jun 20261911 AMAQI
24th Jun 20262312 PMAQI
24th Jun 2026231 PMAQI
24th Jun 2026272 PMAQI
24th Jun 2026293 PMAQI
24th Jun 2026364 PMAQI
24th Jun 2026485 PMAQI
24th Jun 2026636 PMAQI
24th Jun 2026677 PMAQI
24th Jun 2026678 PMAQI
24th Jun 2026739 PMAQI
24th Jun 20266910 PMAQI
24th Jun 20267111 PMAQI
25th Jun 20265612 AMAQI
25th Jun 2026511 AMAQI
25th Jun 2026572 AMAQI
25th Jun 2026523 AMAQI
25th Jun 2026484 AMAQI
25th Jun 2026465 AMAQI

28°C22/35°C

25th Jun 2026426 AMAQI
25th Jun 2026367 AMAQI
25th Jun 2026318 AMAQI
25th Jun 2026299 AMAQI
25th Jun 20263610 AMAQI
25th Jun 20262511 AMAQI
25th Jun 20262212 PMAQI
25th Jun 2026231 PMAQI
25th Jun 2026252 PMAQI
25th Jun 2026233 PMAQI
25th Jun 2026384 PMAQI
25th Jun 2026525 PMAQI
25th Jun 2026606 PMAQI
25th Jun 2026517 PMAQI
25th Jun 2026388 PMAQI
25th Jun 2026499 PMAQI
25th Jun 20266310 PMAQI
25th Jun 20266411 PMAQI
26th Jun 20265812 AMAQI
26th Jun 2026401 AMAQI
26th Jun 2026292 AMAQI
26th Jun 2026483 AMAQI
26th Jun 2026484 AMAQI
26th Jun 2026485 AMAQI

28°C22/36°C

26th Jun 2026496 AMAQI
26th Jun 2026517 AMAQI
26th Jun 2026388 AMAQI
26th Jun 2026219 AMAQI
26th Jun 20261710 AMAQI
26th Jun 20261911 AMAQI
26th Jun 20262112 PMAQI
26th Jun 2026251 PMAQI
26th Jun 2026202 PMAQI
26th Jun 2026363 PMAQI
26th Jun 2026464 PMAQI
26th Jun 2026535 PMAQI
26th Jun 2026536 PMAQI
26th Jun 2026577 PMAQI
26th Jun 2026628 PMAQI
26th Jun 2026609 PMAQI
26th Jun 20265510 PMAQI
26th Jun 20264011 PMAQI
27th Jun 20263812 AMAQI
27th Jun 2026341 AMAQI
27th Jun 2026342 AMAQI
27th Jun 2026203 AMAQI
27th Jun 2026104 AMAQI
27th Jun 202685 AMAQI

28°C22/36°C

27th Jun 202686 AMAQI
27th Jun 202687 AMAQI
27th Jun 2026128 AMAQI
27th Jun 2026209 AMAQI
27th Jun 20264210 AMAQI
27th Jun 20263611 AMAQI
27th Jun 20262612 PMAQI
27th Jun 2026201 PMAQI
27th Jun 2026212 PMAQI
27th Jun 2026293 PMAQI
27th Jun 2026384 PMAQI
27th Jun 2026485 PMAQI
27th Jun 2026546 PMAQI
27th Jun 2026587 PMAQI
27th Jun 2026628 PMAQI
27th Jun 2026859 PMAQI
27th Jun 202610410 PMAQI
27th Jun 20267611 PMAQI
28th Jun 20265312 AMAQI
28th Jun 2026441 AMAQI
28th Jun 2026362 AMAQI
28th Jun 2026323 AMAQI
28th Jun 2026214 AMAQI
28th Jun 2026195 AMAQI

27°C21/35°C

28th Jun 2026276 AMAQI
28th Jun 2026277 AMAQI
28th Jun 2026278 AMAQI
28th Jun 2026199 AMAQI
28th Jun 20262210 AMAQI
28th Jun 20262111 AMAQI
28th Jun 20263412 PMAQI
28th Jun 2026281 PMAQI
28th Jun 2026382 PMAQI
28th Jun 2026483 PMAQI
28th Jun 2026584 PMAQI
28th Jun 2026605 PMAQI
28th Jun 2026666 PMAQI
28th Jun 2026517 PMAQI
28th Jun 2026428 PMAQI
28th Jun 2026339 PMAQI
28th Jun 20262810 PMAQI
28th Jun 20262711 PMAQI
29th Jun 20263112 AMAQI
29th Jun 2026211 AMAQI
29th Jun 2026192 AMAQI
29th Jun 2026173 AMAQI
29th Jun 2026144 AMAQI
29th Jun 2026125 AMAQI

26°C21/34°C

29th Jun 2026106 AMAQI
29th Jun 2026107 AMAQI
29th Jun 202688 AMAQI
29th Jun 202689 AMAQI
29th Jun 20261410 AMAQI
29th Jun 20262411 AMAQI
29th Jun 20262612 PMAQI
29th Jun 2026251 PMAQI
29th Jun 2026202 PMAQI
29th Jun 2026223 PMAQI
29th Jun 2026204 PMAQI
29th Jun 2026225 PMAQI
29th Jun 2026346 PMAQI
29th Jun 2026367 PMAQI
29th Jun 2026368 PMAQI
29th Jun 2026369 PMAQI
29th Jun 20261710 PMAQI
29th Jun 20261211 PMAQI
30th Jun 2026812 AMAQI
30th Jun 202661 AMAQI
30th Jun 202662 AMAQI
30th Jun 202663 AMAQI
30th Jun 202684 AMAQI
30th Jun 2026105 AMAQI

25°C21/33°C

30th Jun 2026156 AMAQI
30th Jun 2026157 AMAQI
30th Jun 202688 AMAQI
30th Jun 2026109 AMAQI
30th Jun 20261710 AMAQI
30th Jun 20261511 AMAQI
30th Jun 20261412 PMAQI
30th Jun 2026121 PMAQI
30th Jun 202682 PMAQI
30th Jun 2026103 PMAQI
30th Jun 2026134 PMAQI
30th Jun 2026145 PMAQI
30th Jun 2026256 PMAQI
30th Jun 2026327 PMAQI
30th Jun 2026388 PMAQI
30th Jun 2026329 PMAQI
30th Jun 20262410 PMAQI
30th Jun 20262311 PMAQI
1st Jul 20262412 AMAQI
1st Jul 2026241 AMAQI
1st Jul 2026242 AMAQI
1st Jul 2026223 AMAQI
1st Jul 2026264 AMAQI
1st Jul 2026265 AMAQI

25°C21/33°C

1st Jul 2026266 AMAQI
1st Jul 2026257 AMAQI
1st Jul 2026258 AMAQI
1st Jul 2026249 AMAQI
1st Jul 20262710 AMAQI
1st Jul 20262411 AMAQI
1st Jul 20262412 PMAQI
1st Jul 2026221 PMAQI
1st Jul 2026232 PMAQI
1st Jul 2026233 PMAQI
1st Jul 2026214 PMAQI
1st Jul 2026205 PMAQI
1st Jul 2026226 PMAQI
1st Jul 2026227 PMAQI
1st Jul 2026248 PMAQI
1st Jul 2026309 PMAQI
1st Jul 20264210 PMAQI
1st Jul 20263211 PMAQI
2nd Jul 20262312 AMAQI
2nd Jul 2026211 AMAQI
2nd Jul 2026142 AMAQI
2nd Jul 2026113 AMAQI
2nd Jul 2026134 AMAQI
2nd Jul 2026205 AMAQI

25°C21/31°C

2nd Jul 2026166 AMAQI
2nd Jul 2026167 AMAQI
2nd Jul 2026188 AMAQI
2nd Jul 2026169 AMAQI
2nd Jul 20262010 AMAQI
2nd Jul 20262011 AMAQI
2nd Jul 20262012 PMAQI
2nd Jul 2026161 PMAQI
2nd Jul 2026152 PMAQI
2nd Jul 2026163 PMAQI
2nd Jul 2026214 PMAQI
2nd Jul 2026215 PMAQI
2nd Jul 2026276 PMAQI
2nd Jul 2026297 PMAQI
2nd Jul 2026278 PMAQI
2nd Jul 2026239 PMAQI
2nd Jul 20261910 PMAQI
2nd Jul 20261211 PMAQI
3rd Jul 2026812 AMAQI
3rd Jul 202641 AMAQI
3rd Jul 202662 AMAQI
3rd Jul 202663 AMAQI
3rd Jul 202684 AMAQI
3rd Jul 202685 AMAQI

26°C21/35°C

3rd Jul 202676 AMAQI
3rd Jul 202687 AMAQI
3rd Jul 202698 AMAQI
3rd Jul 202689 AMAQI
3rd Jul 2026810 AMAQI
3rd Jul 2026811 AMAQI
3rd Jul 2026812 PMAQI
3rd Jul 2026191 PMAQI
3rd Jul 2026212 PMAQI
3rd Jul 2026213 PMAQI
3rd Jul 2026234 PMAQI
3rd Jul 2026235 PMAQI
3rd Jul 2026166 PMAQI
3rd Jul 2026127 PMAQI
3rd Jul 2026128 PMAQI
3rd Jul 2026199 PMAQI
3rd Jul 20262510 PMAQI
3rd Jul 20262711 PMAQI
4th Jul 20262712 AMAQI
4th Jul 2026271 AMAQI
4th Jul 2026232 AMAQI
4th Jul 2026223 AMAQI
4th Jul 2026244 AMAQI
4th Jul 2026225 AMAQI

25°C21/32°C

4th Jul 2026246 AMAQI
4th Jul 2026227 AMAQI
4th Jul 2026218 AMAQI
4th Jul 2026249 AMAQI
4th Jul 20262010 AMAQI
4th Jul 20262111 AMAQI
4th Jul 20261912 PMAQI
4th Jul 2026241 PMAQI
4th Jul 2026242 PMAQI
4th Jul 2026223 PMAQI
4th Jul 2026244 PMAQI
4th Jul 2026395 PMAQI
4th Jul 2026596 PMAQI
4th Jul 2026577 PMAQI
4th Jul 2026598 PMAQI
4th Jul 2026629 PMAQI
4th Jul 20265910 PMAQI
4th Jul 20266211 PMAQI
5th Jul 20266712 AMAQI
5th Jul 2026421 AMAQI
5th Jul 2026442 AMAQI
5th Jul 2026743 AMAQI
5th Jul 2026784 AMAQI
5th Jul 2026825 AMAQI

23°C22/24°C

5th Jul 2026706 AMAQI
5th Jul 2026767 AMAQI
5th Jul 2026808 AMAQI
5th Jul 2026829 AMAQI
5th Jul 20265010 AMAQI
5th Jul 20265011 AMAQI
5th Jul 20266812 PMAQI
5th Jul 2026641 PMAQI
5th Jul 2026662 PMAQI
5th Jul 2026603 PMAQI
5th Jul 2026564 PMAQI
5th Jul 2026655 PMAQI
5th Jul 2026596 PMAQI
5th Jul 2026547 PMAQI
5th Jul 2026568 PMAQI
5th Jul 2026629 PMAQI
5th Jul 20266010 PMAQI
5th Jul 20265811 PMAQI
6th Jul 20264612 AMAQI
6th Jul 2026471 AMAQI
6th Jul 2026462 AMAQI
6th Jul 2026513 AMAQI
6th Jul 2026504 AMAQI
6th Jul 2026465 AMAQI

23°C21/24°C

6th Jul 2026406 AMAQI
6th Jul 2026387 AMAQI
6th Jul 2026388 AMAQI
6th Jul 2026389 AMAQI
6th Jul 20263010 AMAQI
6th Jul 20262611 AMAQI
6th Jul 20262112 PMAQI
6th Jul 2026231 PMAQI
6th Jul 2026402 PMAQI
6th Jul 2026513 PMAQI
6th Jul 2026484 PMAQI
6th Jul 2026535 PMAQI
6th Jul 2026506 PMAQI
6th Jul 2026447 PMAQI
6th Jul 2026408 PMAQI
6th Jul 2026429 PMAQI
6th Jul 20263210 PMAQI
6th Jul 20262311 PMAQI
7th Jul 20262212 AMAQI
7th Jul 2026211 AMAQI
7th Jul 2026242 AMAQI
7th Jul 2026283 AMAQI
7th Jul 2026324 AMAQI
7th Jul 2026325 AMAQI

23°C21/25°C

7th Jul 2026336 AMAQI
7th Jul 2026297 AMAQI
7th Jul 2026258 AMAQI
7th Jul 2026269 AMAQI
7th Jul 20262810 AMAQI
7th Jul 20262311 AMAQI
7th Jul 20261212 PMAQI
7th Jul 2026141 PMAQI
7th Jul 2026122 PMAQI
7th Jul 2026123 PMAQI
7th Jul 2026164 PMAQI
7th Jul 2026175 PMAQI
7th Jul 2026176 PMAQI
7th Jul 2026147 PMAQI
7th Jul 2026238 PMAQI
7th Jul 2026219 PMAQI
7th Jul 20261510 PMAQI
7th Jul 2026811 PMAQI
8th Jul 20261012 AMAQI
8th Jul 2026121 AMAQI
8th Jul 2026142 AMAQI
8th Jul 2026143 AMAQI
8th Jul 2026144 AMAQI
8th Jul 2026145 AMAQI

22°C20/24°C

8th Jul 2026166 AMAQI
8th Jul 2026167 AMAQI
8th Jul 2026158 AMAQI
8th Jul 2026109 AMAQI
8th Jul 20262210 AMAQI
8th Jul 20262311 AMAQI
8th Jul 20262412 PMAQI
8th Jul 2026141 PMAQI
8th Jul 2026192 PMAQI
8th Jul 2026253 PMAQI
8th Jul 2026234 PMAQI
8th Jul 2026225 PMAQI
8th Jul 2026186 PMAQI
8th Jul 2026197 PMAQI
8th Jul 2026198 PMAQI
8th Jul 2026229 PMAQI
8th Jul 20262510 PMAQI
8th Jul 20263011 PMAQI
9th Jul 20262912 AMAQI
9th Jul 2026301 AMAQI
9th Jul 2026282 AMAQI
9th Jul 2026303 AMAQI
9th Jul 2026294 AMAQI
9th Jul 2026285 AMAQI

24°C21/28°C

9th Jul 2026286 AMAQI
9th Jul 2026287 AMAQI
9th Jul 2026268 AMAQI
9th Jul 2026289 AMAQI
9th Jul 20262510 AMAQI
9th Jul 20262211 AMAQI
9th Jul 20262012 PMAQI
9th Jul 2026221 PMAQI
9th Jul 2026242 PMAQI
9th Jul 2026243 PMAQI
9th Jul 2026224 PMAQI
9th Jul 2026225 PMAQI
9th Jul 2026226 PMAQI
9th Jul 2026167 PMAQI
9th Jul 2026168 PMAQI
9th Jul 2026239 PMAQI
9th Jul 20262810 PMAQI
9th Jul 20262811 PMAQI
10th Jul 20262812 AMAQI
10th Jul 2026261 AMAQI
10th Jul 2026222 AMAQI
10th Jul 2026243 AMAQI
10th Jul 2026234 AMAQI
10th Jul 2026245 AMAQI

24°C20/27°C

10th Jul 2026246 AMAQI
10th Jul 2026247 AMAQI
10th Jul 2026258 AMAQI
10th Jul 2026269 AMAQI
10th Jul 20262210 AMAQI
10th Jul 20262511 AMAQI
10th Jul 20262512 PMAQI
10th Jul 2026211 PMAQI
10th Jul 2026222 PMAQI
10th Jul 2026253 PMAQI
10th Jul 2026274 PMAQI
10th Jul 2026175 PMAQI
10th Jul 2026306 PMAQI
10th Jul 2026307 PMAQI
10th Jul 2026308 PMAQI
10th Jul 2026319 PMAQI
10th Jul 20263210 PMAQI
10th Jul 20263311 PMAQI
11th Jul 20263112 AMAQI
11th Jul 2026331 AMAQI
11th Jul 2026312 AMAQI
11th Jul 2026283 AMAQI
11th Jul 2026304 AMAQI
11th Jul 2026325 AMAQI

24°C21/28°C

11th Jul 2026326 AMAQI
11th Jul 2026327 AMAQI
11th Jul 2026348 AMAQI
11th Jul 2026369 AMAQI
11th Jul 20262810 AMAQI
11th Jul 20262611 AMAQI
11th Jul 20262312 PMAQI
11th Jul 2026221 PMAQI
11th Jul 2026222 PMAQI
11th Jul 2026263 PMAQI
11th Jul 2026184 PMAQI
11th Jul 2026185 PMAQI
11th Jul 202686 PMAQI
11th Jul 2026177 PMAQI
11th Jul 2026208 PMAQI
11th Jul 2026309 PMAQI
11th Jul 20262510 PMAQI
11th Jul 20262611 PMAQI
12th Jul 20262612 AMAQI
12th Jul 2026311 AMAQI
12th Jul 2026222 AMAQI
12th Jul 2026243 AMAQI
12th Jul 2026224 AMAQI
12th Jul 2026255 AMAQI

25°C21/28°C

12th Jul 2026246 AMAQI
6 AM
12th Jul 2026247 AMAQI
12th Jul 2026288 AMAQI
12th Jul 2026309 AMAQI
12th Jul 20262510 AMAQI
12th Jul 20262411 AMAQI
12th Jul 20262112 PMAQI
12 PM
12th Jul 2026191 PMAQI
12th Jul 2026182 PMAQI
12th Jul 2026243 PMAQI
12th Jul 2026264 PMAQI
12th Jul 2026165 PMAQI
12th Jul 2026176 PMAQI
12th Jul 2026167 PMAQI
7 PM
12th Jul 2026198 PMAQI
12th Jul 2026209 PMAQI
12th Jul 20262210 PMAQI
12th Jul 20262311 PMAQI
12 AM
5 AM

25°C22/29°C

Day time
Avg. Highest Time
6 PM - 7 PM

43AQI

2 hours / Day
60 hours / Month
Avg. Lowest Time
11 AM - 1 PM

23AQI

3 hours / Day
90 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 6 PM to 7 PM (Avg. 43), while the lowest AQI was between 11 AM to 1 PM (Avg. 23).
Night time
Avg. Highest Time
9 PM - 10 PM

46AQI

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

24AQI

1 hours / Day
30 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 9 PM to 10 PM (Avg. 46), while the lowest AQI was between 5 AM to 5 AM (Avg. 24).

2026 Days Vs Air Quality

Institute Of Forestry Sub Station, Chongshan, Hainan, China

2026

66%

127

34%

66

Total number of days with different AQI categories in last 193 days in 2026 (172 days remaining)

Good
127 Days
Moderate
66 Days
Poor
0 Days
Unhealthy
0 Days
Severe
0 Days
Hazardous
0 Days

Under WHO’s Safe Air Quality Limits: 66%

Health Risk Level:

Moderate

In 2026, 66% of 193 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

Institute Of Forestry Sub Station, Chongshan, Hainan, China

AQI levels in 2026

AQI (US)
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 2026
-1th undefined 2026
-1th undefined 2026
-1th undefined 2026
1st January 2026
58AQI (US)
2nd January 2026
84AQI (US)
3rd January 2026
67AQI (US)
4th January 2026
56AQI (US)
5th January 2026
54AQI (US)
6th January 2026
88AQI (US)
7th January 2026
76AQI (US)
8th January 2026
73AQI (US)
9th January 2026
45AQI (US)
10th January 2026
52AQI (US)
11th January 2026
58AQI (US)
12th January 2026
66AQI (US)
13th January 2026
67AQI (US)
14th January 2026
65AQI (US)
15th January 2026
62AQI (US)
16th January 2026
52AQI (US)
17th January 2026
66AQI (US)
18th January 2026
74AQI (US)
19th January 2026
56AQI (US)
20th January 2026
56AQI (US)
21st January 2026
64AQI (US)
22nd January 2026
69AQI (US)
23rd January 2026
57AQI (US)
24th January 2026
47AQI (US)
25th January 2026
33AQI (US)
26th January 2026
41AQI (US)
27th January 2026
36AQI (US)
28th January 2026
36AQI (US)
29th January 2026
53AQI (US)
30th January 2026
45AQI (US)
31st January 2026
38AQI (US)
1st February 2026
30AQI (US)
2nd February 2026
33AQI (US)
3rd February 2026
51AQI (US)
4th February 2026
52AQI (US)
5th February 2026
48AQI (US)
6th February 2026
23AQI (US)
7th February 2026
33AQI (US)
8th February 2026
48AQI (US)
9th February 2026
53AQI (US)
10th February 2026
49AQI (US)
11th February 2026
30AQI (US)
12th February 2026
35AQI (US)
13th February 2026
39AQI (US)
14th February 2026
51AQI (US)
15th February 2026
54AQI (US)
16th February 2026
60AQI (US)
17th February 2026
70AQI (US)
18th February 2026
17AQI (US)
19th February 2026
39AQI (US)
20th February 2026
56AQI (US)
21st February 2026
54AQI (US)
22nd February 2026
51AQI (US)
23rd February 2026
39AQI (US)
24th February 2026
46AQI (US)
25th February 2026
55AQI (US)
26th February 2026
51AQI (US)
27th February 2026
45AQI (US)
28th February 2026
40AQI (US)
1st March 2026
33AQI (US)
2nd March 2026
37AQI (US)
3rd March 2026
35AQI (US)
4th March 2026
17AQI (US)
5th March 2026
16AQI (US)
6th March 2026
60AQI (US)
7th March 2026
66AQI (US)
8th March 2026
55AQI (US)
9th March 2026
35AQI (US)
10th March 2026
26AQI (US)
11th March 2026
39AQI (US)
12th March 2026
52AQI (US)
13th March 2026
40AQI (US)
14th March 2026
85AQI (US)
15th March 2026
46AQI (US)
16th March 2026
53AQI (US)
17th March 2026
49AQI (US)
18th March 2026
47AQI (US)
19th March 2026
40AQI (US)
20th March 2026
42AQI (US)
21st March 2026
42AQI (US)
22nd March 2026
40AQI (US)
23rd March 2026
44AQI (US)
24th March 2026
42AQI (US)
25th March 2026
47AQI (US)
26th March 2026
48AQI (US)
27th March 2026
44AQI (US)
28th March 2026
55AQI (US)
29th March 2026
48AQI (US)
30th March 2026
35AQI (US)
31st March 2026
40AQI (US)
1st April 2026
64AQI (US)
2nd April 2026
73AQI (US)
3rd April 2026
55AQI (US)
4th April 2026
45AQI (US)
5th April 2026
70AQI (US)
6th April 2026
70AQI (US)
7th April 2026
72AQI (US)
8th April 2026
76AQI (US)
9th April 2026
48AQI (US)
10th April 2026
49AQI (US)
11th April 2026
68AQI (US)
12th April 2026
71AQI (US)
13th April 2026
47AQI (US)
14th April 2026
46AQI (US)
15th April 2026
31AQI (US)
16th April 2026
30AQI (US)
17th April 2026
30AQI (US)
18th April 2026
42AQI (US)
19th April 2026
46AQI (US)
20th April 2026
52AQI (US)
21st April 2026
53AQI (US)
22nd April 2026
50AQI (US)
23rd April 2026
60AQI (US)
24th April 2026
34AQI (US)
25th April 2026
33AQI (US)
26th April 2026
44AQI (US)
27th April 2026
36AQI (US)
28th April 2026
41AQI (US)
29th April 2026
64AQI (US)
30th April 2026
34AQI (US)
1st May 2026
48AQI (US)
2nd May 2026
46AQI (US)
3rd May 2026
43AQI (US)
4th May 2026
32AQI (US)
5th May 2026
31AQI (US)
6th May 2026
27AQI (US)
7th May 2026
33AQI (US)
8th May 2026
26AQI (US)
9th May 2026
20AQI (US)
10th May 2026
24AQI (US)
11th May 2026
43AQI (US)
12th May 2026
50AQI (US)
13th May 2026
28AQI (US)
14th May 2026
38AQI (US)
15th May 2026
57AQI (US)
16th May 2026
71AQI (US)
17th May 2026
56AQI (US)
18th May 2026
55AQI (US)
19th May 2026
43AQI (US)
20th May 2026
61AQI (US)
21st May 2026
72AQI (US)
22nd May 2026
74AQI (US)
23rd May 2026
64AQI (US)
24th May 2026
64AQI (US)
25th May 2026
56AQI (US)
26th May 2026
45AQI (US)
27th May 2026
26AQI (US)
28th May 2026
32AQI (US)
29th May 2026
50AQI (US)
30th May 2026
43AQI (US)
31st May 2026
35AQI (US)
1st June 2026
42AQI (US)
2nd June 2026
46AQI (US)
3rd June 2026
35AQI (US)
4th June 2026
40AQI (US)
5th June 2026
37AQI (US)
6th June 2026
30AQI (US)
7th June 2026
31AQI (US)
8th June 2026
32AQI (US)
9th June 2026
22AQI (US)
10th June 2026
16AQI (US)
11th June 2026
28AQI (US)
12th June 2026
24AQI (US)
13th June 2026
30AQI (US)
14th June 2026
31AQI (US)
15th June 2026
39AQI (US)
16th June 2026
35AQI (US)
17th June 2026
22AQI (US)
18th June 2026
42AQI (US)
19th June 2026
38AQI (US)
20th June 2026
44AQI (US)
21st June 2026
35AQI (US)
22nd June 2026
34AQI (US)
23rd June 2026
32AQI (US)
24th June 2026
41AQI (US)
25th June 2026
42AQI (US)
26th June 2026
41AQI (US)
27th June 2026
37AQI (US)
28th June 2026
36AQI (US)
29th June 2026
21AQI (US)
30th June 2026
15AQI (US)
1st July 2026
25AQI (US)
2nd July 2026
19AQI (US)
3rd July 2026
13AQI (US)
4th July 2026
33AQI (US)
5th July 2026
63AQI (US)
6th July 2026
40AQI (US)
7th July 2026
21AQI (US)
8th July 2026
18AQI (US)
9th July 2026
25AQI (US)
10th July 2026
26AQI (US)
11th July 2026
26AQI (US)
12th July 2026
23AQI (US)
13th July 2026
14th July 2026
15th July 2026
16th July 2026
17th July 2026
18th July 2026
19th July 2026
20th July 2026
21st July 2026
22nd July 2026
23rd July 2026
24th July 2026
25th July 2026
26th July 2026
27th July 2026
28th July 2026
29th July 2026
30th July 2026
31st July 2026
1st August 2026
2nd August 2026
3rd August 2026
4th August 2026
5th August 2026
6th August 2026
7th August 2026
8th August 2026
9th August 2026
10th August 2026
11th August 2026
12th August 2026
13th August 2026
14th August 2026
15th August 2026
16th August 2026
17th August 2026
18th August 2026
19th August 2026
20th August 2026
21st August 2026
22nd August 2026
23rd August 2026
24th August 2026
25th August 2026
26th August 2026
27th August 2026
28th August 2026
29th August 2026
30th August 2026
31st August 2026
1st September 2026
2nd September 2026
3rd September 2026
4th September 2026
5th September 2026
6th September 2026
7th September 2026
8th September 2026
9th September 2026
10th September 2026
11th September 2026
12th September 2026
13th September 2026
14th September 2026
15th September 2026
16th September 2026
17th September 2026
18th September 2026
19th September 2026
20th September 2026
21st September 2026
22nd September 2026
23rd September 2026
24th September 2026
25th September 2026
26th September 2026
27th September 2026
28th September 2026
29th September 2026
30th September 2026
1st October 2026
2nd October 2026
3rd October 2026
4th October 2026
5th October 2026
6th October 2026
7th October 2026
8th October 2026
9th October 2026
10th October 2026
11th October 2026
12th October 2026
13th October 2026
14th October 2026
15th October 2026
16th October 2026
17th October 2026
18th October 2026
19th October 2026
20th October 2026
21st October 2026
22nd October 2026
23rd October 2026
24th October 2026
25th October 2026
26th October 2026
27th October 2026
28th October 2026
29th October 2026
30th October 2026
31st October 2026
1st November 2026
2nd November 2026
3rd November 2026
4th November 2026
5th November 2026
6th November 2026
7th November 2026
8th November 2026
9th November 2026
10th November 2026
11th November 2026
12th November 2026
13th November 2026
14th November 2026
15th November 2026
16th November 2026
17th November 2026
18th November 2026
19th November 2026
20th November 2026
21st November 2026
22nd November 2026
23rd November 2026
24th November 2026
25th November 2026
26th November 2026
27th November 2026
28th November 2026
29th November 2026
30th November 2026
1st December 2026
2nd December 2026
3rd December 2026
4th December 2026
5th December 2026
6th December 2026
7th December 2026
8th December 2026
9th December 2026
10th December 2026
11th December 2026
12th December 2026
13th December 2026
14th December 2026
15th December 2026
16th December 2026
17th December 2026
18th December 2026
19th December 2026
20th December 2026
21st December 2026
22nd December 2026
23rd December 2026
24th December 2026
25th December 2026
26th December 2026
27th December 2026
28th December 2026
29th December 2026
30th December 2026
31st December 2026

58AQI (US)

45AQI (US)

44AQI (US)

51AQI (US)

45AQI (US)

33AQI (US)

28AQI (US)

No. of days

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

202645AQI (US)

8
23
16
12
24
7
17
13
21
10
30
11
1
127
66

Highest AQI (US) recorded in

January

58AQI (US)

Lowest AQI (US) recorded in

July

28AQI (US)

202551AQI (US)

28
3
16
12
11
20
2
26
2
16
15
28
2
31
25
6
30
20
11
9
21
8
23
196
164
5

Highest AQI (US) recorded in

January

83AQI (US)

Lowest AQI (US) recorded in

September

31AQI (US)

202444AQI (US)

21
13
4
12
10
6
12
18
5
30
31
31
28
1
20
10
1
22
8
28
3
232
78
4

Highest AQI (US) recorded in

December

78AQI (US)

Lowest AQI (US) recorded in

July

29AQI (US)

202337AQI (US)

3
8
1
4
8
1
2
1
1
1
5
2
9
4
1
3
28
2
60
23
1

Highest AQI (US) recorded in

March

62AQI (US)

Lowest AQI (US) recorded in

September

16AQI (US)

202237AQI (US)

26
2
20
1
24
7
14
16
29
2
30
20
1
3
7
15
10
20
3
8
5
210
53

Highest AQI (US) recorded in

September

53AQI (US)

Lowest AQI (US) recorded in

August

21AQI (US)

202141AQI (US)

2
27
2
12
16
22
9
22
8
29
2
22
5
30
1
30
1
29
1
26
5
16
14
13
17
1
253
106
3

Highest AQI (US) recorded in

January

67AQI (US)

Lowest AQI (US) recorded in

September

26AQI (US)

202036AQI (US)

27
31
30
1
29
1
24
7
12
17
1
11
20
164
46
1

Highest AQI (US) recorded in

November

55AQI (US)

Lowest AQI (US) recorded in

September

23AQI (US)

Most & Least Polluted Years Over the Last 7 Years

Most Polluted Year Recorded
2025(Avg.)
51AQI (US)
Least Polluted Year Recorded
2020(Avg.)
36AQI (US)

Institute Of Forestry Sub Station's annual 2026 AQI (US) (45) shows an average percentage change of 11.4% (worsened AQI (US)) compared to previous years: 2020 (36), 2021 (41), 2022 (37), 2023 (37), 2024 (44), 2025 (51).