City Archives Sub Station, Basuo, 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
City Archives Sub Station, Basuo, Hainan, China
2021
2022
2023
2024
2025
AQI
.
Days
AQI Trends: Highest and Lowest
Highest AQI recorded on
1st Aug 2025
53AQILowest AQI recorded on
31st Aug 2022
13AQISame Day Analysis (2nd August ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 1st highest AQI at 53 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
City Archives Sub Station, Basuo, Hainan, China
AQI
Day
Night
.
6 AM2nd Aug 2025
7 PM
5 AM3rd Aug 2025
Day time
Avg. Highest Time
6PM2nd Aug
65AQI
Avg. Lowest Time
10AM2nd Aug
40AQI
Night time
Avg. Highest Time
11PM2nd Aug
61AQI
Avg. Lowest Time
5AM3rd Aug
54AQI
In the last 24 hours,
City Archives Sub Station's AQI reached its highest point of 65 at 6 PM during the Day, while the lowest point, 40, was recorded at 10 AM during the Day between 2nd Aug and 3rd Aug 2025.
Day & Night AQI Trend : Jul - Aug 2025
City Archives Sub Station, Basuo, 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 2025256 AMAQI
4th Jul 2025257 AMAQI
4th Jul 2025208 AMAQI
4th Jul 2025209 AMAQI
4th Jul 20252210 AMAQI
4th Jul 20252911 AMAQI
4th Jul 20252312 PMAQI
4th Jul 2025201 PMAQI
4th Jul 2025202 PMAQI
4th Jul 2025183 PMAQI
4th Jul 2025204 PMAQI
4th Jul 2025195 PMAQI
4th Jul 2025186 PMAQI
4th Jul 2025197 PMAQI
4th Jul 2025288 PMAQI
4th Jul 2025269 PMAQI
4th Jul 20252410 PMAQI
4th Jul 20252411 PMAQI
5th Jul 20252512 AMAQI
5th Jul 2025241 AMAQI
5th Jul 2025272 AMAQI
5th Jul 2025273 AMAQI
5th Jul 2025264 AMAQI
5th Jul 2025265 AMAQI
27°C25/29°C
5th Jul 2025266 AMAQI
5th Jul 2025267 AMAQI
5th Jul 2025208 AMAQI
5th Jul 2025209 AMAQI
5th Jul 20252110 AMAQI
5th Jul 20252111 AMAQI
5th Jul 20252112 PMAQI
5th Jul 2025201 PMAQI
5th Jul 2025202 PMAQI
5th Jul 2025213 PMAQI
5th Jul 2025224 PMAQI
5th Jul 2025185 PMAQI
5th Jul 2025206 PMAQI
5th Jul 2025247 PMAQI
5th Jul 2025268 PMAQI
5th Jul 2025269 PMAQI
5th Jul 20252610 PMAQI
5th Jul 20252611 PMAQI
6th Jul 20252512 AMAQI
6th Jul 2025241 AMAQI
6th Jul 2025262 AMAQI
6th Jul 2025263 AMAQI
6th Jul 2025264 AMAQI
6th Jul 2025285 AMAQI
28°C26/30°C
6th Jul 2025276 AMAQI
6th Jul 2025267 AMAQI
6th Jul 2025248 AMAQI
6th Jul 2025199 AMAQI
6th Jul 20252010 AMAQI
6th Jul 20251911 AMAQI
6th Jul 20252012 PMAQI
6th Jul 2025181 PMAQI
6th Jul 2025182 PMAQI
6th Jul 2025203 PMAQI
6th Jul 2025194 PMAQI
6th Jul 2025205 PMAQI
6th Jul 2025206 PMAQI
6th Jul 2025207 PMAQI
6th Jul 2025238 PMAQI
6th Jul 2025249 PMAQI
6th Jul 20252610 PMAQI
6th Jul 20252611 PMAQI
7th Jul 20252312 AMAQI
7th Jul 2025241 AMAQI
7th Jul 2025292 AMAQI
7th Jul 2025293 AMAQI
7th Jul 2025284 AMAQI
7th Jul 2025275 AMAQI
28°C26/30°C
7th Jul 2025266 AMAQI
7th Jul 2025267 AMAQI
7th Jul 2025188 AMAQI
7th Jul 2025169 AMAQI
7th Jul 20251610 AMAQI
7th Jul 20251711 AMAQI
7th Jul 20252012 PMAQI
7th Jul 2025181 PMAQI
7th Jul 2025282 PMAQI
7th Jul 2025193 PMAQI
7th Jul 2025204 PMAQI
7th Jul 2025165 PMAQI
7th Jul 2025226 PMAQI
7th Jul 2025237 PMAQI
7th Jul 2025248 PMAQI
7th Jul 2025259 PMAQI
7th Jul 20252410 PMAQI
7th Jul 20252211 PMAQI
8th Jul 20252212 AMAQI
8th Jul 2025251 AMAQI
8th Jul 2025292 AMAQI
8th Jul 2025283 AMAQI
8th Jul 2025284 AMAQI
8th Jul 2025275 AMAQI
28°C27/30°C
8th Jul 2025266 AMAQI
8th Jul 2025277 AMAQI
8th Jul 2025228 AMAQI
8th Jul 2025239 AMAQI
8th Jul 20252310 AMAQI
8th Jul 20252611 AMAQI
8th Jul 20252612 PMAQI
8th Jul 2025241 PMAQI
8th Jul 2025272 PMAQI
8th Jul 2025233 PMAQI
8th Jul 2025254 PMAQI
8th Jul 2025225 PMAQI
8th Jul 2025276 PMAQI
8th Jul 2025297 PMAQI
8th Jul 2025248 PMAQI
8th Jul 2025249 PMAQI
8th Jul 20252410 PMAQI
8th Jul 20253411 PMAQI
9th Jul 20253612 AMAQI
9th Jul 2025361 AMAQI
9th Jul 2025372 AMAQI
9th Jul 2025363 AMAQI
9th Jul 2025364 AMAQI
9th Jul 2025345 AMAQI
29°C27/31°C
9th Jul 2025286 AMAQI
9th Jul 2025297 AMAQI
9th Jul 2025288 AMAQI
9th Jul 2025299 AMAQI
9th Jul 20252610 AMAQI
9th Jul 20252411 AMAQI
9th Jul 20252612 PMAQI
9th Jul 2025341 PMAQI
9th Jul 2025382 PMAQI
9th Jul 2025323 PMAQI
9th Jul 2025324 PMAQI
9th Jul 2025345 PMAQI
9th Jul 2025326 PMAQI
9th Jul 2025287 PMAQI
9th Jul 2025288 PMAQI
9th Jul 2025309 PMAQI
9th Jul 20252910 PMAQI
9th Jul 20253611 PMAQI
10th Jul 20253012 AMAQI
10th Jul 2025311 AMAQI
10th Jul 2025362 AMAQI
10th Jul 2025363 AMAQI
10th Jul 2025344 AMAQI
10th Jul 2025345 AMAQI
29°C28/31°C
10th Jul 2025356 AMAQI
10th Jul 2025367 AMAQI
10th Jul 2025278 AMAQI
10th Jul 2025249 AMAQI
10th Jul 20252910 AMAQI
10th Jul 20253311 AMAQI
10th Jul 20252612 PMAQI
10th Jul 2025241 PMAQI
10th Jul 2025232 PMAQI
10th Jul 2025233 PMAQI
10th Jul 2025264 PMAQI
10th Jul 2025275 PMAQI
10th Jul 2025326 PMAQI
10th Jul 2025347 PMAQI
10th Jul 2025368 PMAQI
10th Jul 2025349 PMAQI
10th Jul 20253510 PMAQI
10th Jul 20254411 PMAQI
11th Jul 20254212 AMAQI
11th Jul 2025421 AMAQI
11th Jul 2025462 AMAQI
11th Jul 2025443 AMAQI
11th Jul 2025444 AMAQI
11th Jul 2025465 AMAQI
29°C28/30°C
11th Jul 2025456 AMAQI
11th Jul 2025437 AMAQI
11th Jul 2025448 AMAQI
11th Jul 2025239 AMAQI
11th Jul 20253110 AMAQI
11th Jul 20254411 AMAQI
11th Jul 20253412 PMAQI
11th Jul 2025311 PMAQI
11th Jul 2025332 PMAQI
11th Jul 2025483 PMAQI
11th Jul 2025504 PMAQI
11th Jul 2025505 PMAQI
11th Jul 2025436 PMAQI
11th Jul 2025397 PMAQI
11th Jul 2025448 PMAQI
11th Jul 2025409 PMAQI
11th Jul 20253510 PMAQI
11th Jul 20253611 PMAQI
12th Jul 20253512 AMAQI
12th Jul 2025341 AMAQI
12th Jul 2025462 AMAQI
12th Jul 2025463 AMAQI
12th Jul 2025454 AMAQI
12th Jul 2025455 AMAQI
28°C27/30°C
12th Jul 2025456 AMAQI
12th Jul 2025457 AMAQI
12th Jul 2025268 AMAQI
12th Jul 2025209 AMAQI
12th Jul 20252310 AMAQI
12th Jul 20252411 AMAQI
12th Jul 20252612 PMAQI
12th Jul 2025291 PMAQI
12th Jul 2025282 PMAQI
12th Jul 2025263 PMAQI
12th Jul 2025254 PMAQI
12th Jul 2025265 PMAQI
12th Jul 2025276 PMAQI
12th Jul 2025327 PMAQI
12th Jul 2025368 PMAQI
12th Jul 2025359 PMAQI
12th Jul 20253410 PMAQI
12th Jul 20254611 PMAQI
13th Jul 20255112 AMAQI
13th Jul 2025501 AMAQI
13th Jul 2025442 AMAQI
13th Jul 2025423 AMAQI
13th Jul 2025404 AMAQI
13th Jul 2025395 AMAQI
29°C27/30°C
13th Jul 2025396 AMAQI
13th Jul 2025397 AMAQI
13th Jul 2025318 AMAQI
13th Jul 2025229 AMAQI
13th Jul 20252810 AMAQI
13th Jul 20253011 AMAQI
13th Jul 20253012 PMAQI
13th Jul 2025281 PMAQI
13th Jul 2025272 PMAQI
13th Jul 2025243 PMAQI
13th Jul 2025244 PMAQI
13th Jul 2025245 PMAQI
13th Jul 2025226 PMAQI
13th Jul 2025317 PMAQI
13th Jul 2025388 PMAQI
13th Jul 2025379 PMAQI
13th Jul 20253710 PMAQI
13th Jul 20253711 PMAQI
14th Jul 20254312 AMAQI
14th Jul 2025531 AMAQI
14th Jul 2025482 AMAQI
14th Jul 2025483 AMAQI
14th Jul 2025444 AMAQI
14th Jul 2025425 AMAQI
29°C27/31°C
14th Jul 2025426 AMAQI
14th Jul 2025427 AMAQI
14th Jul 2025318 AMAQI
14th Jul 2025279 AMAQI
14th Jul 20253210 AMAQI
14th Jul 20252611 AMAQI
14th Jul 20253412 PMAQI
14th Jul 2025311 PMAQI
14th Jul 2025342 PMAQI
14th Jul 2025473 PMAQI
14th Jul 2025504 PMAQI
14th Jul 2025445 PMAQI
14th Jul 2025446 PMAQI
14th Jul 2025477 PMAQI
14th Jul 2025518 PMAQI
14th Jul 2025449 PMAQI
14th Jul 20254410 PMAQI
14th Jul 20254011 PMAQI
15th Jul 20254112 AMAQI
15th Jul 2025381 AMAQI
15th Jul 2025452 AMAQI
15th Jul 2025483 AMAQI
15th Jul 2025504 AMAQI
15th Jul 2025485 AMAQI
29°C27/31°C
15th Jul 2025496 AMAQI
15th Jul 2025497 AMAQI
15th Jul 2025548 AMAQI
15th Jul 2025519 AMAQI
15th Jul 20254410 AMAQI
15th Jul 20254011 AMAQI
15th Jul 20253812 PMAQI
15th Jul 2025391 PMAQI
15th Jul 2025282 PMAQI
15th Jul 2025253 PMAQI
15th Jul 2025274 PMAQI
15th Jul 2025305 PMAQI
15th Jul 2025296 PMAQI
15th Jul 2025297 PMAQI
15th Jul 2025378 PMAQI
15th Jul 2025389 PMAQI
15th Jul 20253810 PMAQI
15th Jul 20253911 PMAQI
16th Jul 20254112 AMAQI
16th Jul 2025401 AMAQI
16th Jul 2025472 AMAQI
16th Jul 2025473 AMAQI
16th Jul 2025474 AMAQI
16th Jul 2025465 AMAQI
30°C27/32°C
16th Jul 2025446 AMAQI
16th Jul 2025467 AMAQI
16th Jul 2025308 AMAQI
16th Jul 2025279 AMAQI
16th Jul 20252410 AMAQI
16th Jul 20252311 AMAQI
16th Jul 20252412 PMAQI
16th Jul 2025231 PMAQI
16th Jul 2025252 PMAQI
16th Jul 2025273 PMAQI
16th Jul 2025244 PMAQI
16th Jul 2025235 PMAQI
16th Jul 2025236 PMAQI
16th Jul 2025357 PMAQI
16th Jul 2025438 PMAQI
16th Jul 2025369 PMAQI
16th Jul 20253510 PMAQI
16th Jul 20253911 PMAQI
17th Jul 20253712 AMAQI
17th Jul 2025431 AMAQI
17th Jul 2025462 AMAQI
17th Jul 2025453 AMAQI
17th Jul 2025424 AMAQI
17th Jul 2025425 AMAQI
29°C28/32°C
17th Jul 2025466 AMAQI
17th Jul 2025437 AMAQI
17th Jul 2025308 AMAQI
17th Jul 2025249 AMAQI
17th Jul 20253010 AMAQI
17th Jul 20252511 AMAQI
17th Jul 20253412 PMAQI
17th Jul 2025391 PMAQI
17th Jul 2025252 PMAQI
17th Jul 2025243 PMAQI
17th Jul 2025244 PMAQI
17th Jul 2025245 PMAQI
17th Jul 2025236 PMAQI
17th Jul 2025257 PMAQI
17th Jul 2025338 PMAQI
17th Jul 2025359 PMAQI
17th Jul 20253610 PMAQI
17th Jul 20253411 PMAQI
18th Jul 20253512 AMAQI
18th Jul 2025381 AMAQI
18th Jul 2025442 AMAQI
18th Jul 2025443 AMAQI
18th Jul 2025424 AMAQI
18th Jul 2025405 AMAQI
29°C28/31°C
18th Jul 2025406 AMAQI
18th Jul 2025407 AMAQI
18th Jul 2025248 AMAQI
18th Jul 2025229 AMAQI
18th Jul 20251910 AMAQI
18th Jul 20252011 AMAQI
18th Jul 20253312 PMAQI
18th Jul 2025341 PMAQI
18th Jul 2025362 PMAQI
18th Jul 2025433 PMAQI
18th Jul 2025344 PMAQI
18th Jul 2025325 PMAQI
18th Jul 2025326 PMAQI
18th Jul 2025387 PMAQI
18th Jul 2025448 PMAQI
18th Jul 2025349 PMAQI
18th Jul 20253510 PMAQI
18th Jul 20253411 PMAQI
19th Jul 20253512 AMAQI
19th Jul 2025391 AMAQI
19th Jul 2025432 AMAQI
19th Jul 2025403 AMAQI
19th Jul 2025394 AMAQI
19th Jul 2025405 AMAQI
29°C28/31°C
19th Jul 2025406 AMAQI
19th Jul 2025397 AMAQI
19th Jul 2025248 AMAQI
19th Jul 2025219 AMAQI
19th Jul 20252510 AMAQI
19th Jul 20252611 AMAQI
19th Jul 20252512 PMAQI
19th Jul 2025281 PMAQI
19th Jul 2025242 PMAQI
19th Jul 2025213 PMAQI
19th Jul 2025204 PMAQI
19th Jul 2025235 PMAQI
19th Jul 2025216 PMAQI
19th Jul 2025267 PMAQI
19th Jul 2025328 PMAQI
19th Jul 2025329 PMAQI
19th Jul 20253210 PMAQI
19th Jul 20253311 PMAQI
20th Jul 20253212 AMAQI
20th Jul 2025421 AMAQI
20th Jul 2025402 AMAQI
20th Jul 2025413 AMAQI
20th Jul 2025384 AMAQI
20th Jul 2025385 AMAQI
28°C27/29°C
20th Jul 2025386 AMAQI
20th Jul 2025377 AMAQI
20th Jul 2025268 AMAQI
20th Jul 2025189 AMAQI
20th Jul 20251610 AMAQI
20th Jul 20251911 AMAQI
20th Jul 20252212 PMAQI
20th Jul 2025211 PMAQI
20th Jul 2025192 PMAQI
20th Jul 2025203 PMAQI
20th Jul 2025184 PMAQI
20th Jul 2025215 PMAQI
20th Jul 2025206 PMAQI
20th Jul 2025257 PMAQI
20th Jul 2025328 PMAQI
20th Jul 2025339 PMAQI
20th Jul 20253210 PMAQI
20th Jul 20253011 PMAQI
21st Jul 20253012 AMAQI
21st Jul 2025341 AMAQI
21st Jul 2025412 AMAQI
21st Jul 2025393 AMAQI
21st Jul 2025354 AMAQI
21st Jul 2025355 AMAQI
27°C26/28°C
21st Jul 2025346 AMAQI
21st Jul 2025367 AMAQI
21st Jul 2025248 AMAQI
21st Jul 2025229 AMAQI
21st Jul 20252210 AMAQI
21st Jul 20252211 AMAQI
21st Jul 20252212 PMAQI
21st Jul 2025211 PMAQI
21st Jul 2025212 PMAQI
21st Jul 2025203 PMAQI
21st Jul 2025214 PMAQI
21st Jul 2025225 PMAQI
21st Jul 2025196 PMAQI
21st Jul 2025227 PMAQI
21st Jul 2025288 PMAQI
21st Jul 2025279 PMAQI
21st Jul 20253010 PMAQI
21st Jul 20252811 PMAQI
22nd Jul 20252612 AMAQI
22nd Jul 2025321 AMAQI
22nd Jul 2025362 AMAQI
22nd Jul 2025353 AMAQI
22nd Jul 2025344 AMAQI
22nd Jul 2025345 AMAQI
26°C26/26°C
22nd Jul 2025336 AMAQI
22nd Jul 2025347 AMAQI
22nd Jul 2025228 AMAQI
22nd Jul 2025199 AMAQI
22nd Jul 20251810 AMAQI
22nd Jul 20251911 AMAQI
22nd Jul 20252012 PMAQI
22nd Jul 2025201 PMAQI
22nd Jul 2025182 PMAQI
22nd Jul 2025193 PMAQI
22nd Jul 2025194 PMAQI
22nd Jul 2025185 PMAQI
22nd Jul 2025206 PMAQI
22nd Jul 2025227 PMAQI
22nd Jul 2025268 PMAQI
22nd Jul 2025269 PMAQI
22nd Jul 20252710 PMAQI
22nd Jul 20252711 PMAQI
23rd Jul 20252612 AMAQI
23rd Jul 2025311 AMAQI
23rd Jul 2025342 AMAQI
23rd Jul 2025343 AMAQI
23rd Jul 2025324 AMAQI
23rd Jul 2025305 AMAQI
28°C27/29°C
23rd Jul 2025316 AMAQI
23rd Jul 2025307 AMAQI
23rd Jul 2025208 AMAQI
23rd Jul 2025159 AMAQI
23rd Jul 20251610 AMAQI
23rd Jul 20251711 AMAQI
23rd Jul 20251812 PMAQI
23rd Jul 2025181 PMAQI
23rd Jul 2025162 PMAQI
23rd Jul 2025173 PMAQI
23rd Jul 2025154 PMAQI
23rd Jul 2025165 PMAQI
23rd Jul 2025166 PMAQI
23rd Jul 2025187 PMAQI
23rd Jul 2025248 PMAQI
23rd Jul 2025249 PMAQI
23rd Jul 20252510 PMAQI
23rd Jul 20252411 PMAQI
24th Jul 20252412 AMAQI
24th Jul 2025241 AMAQI
24th Jul 2025232 AMAQI
24th Jul 2025243 AMAQI
24th Jul 2025364 AMAQI
24th Jul 2025385 AMAQI
28°C27/29°C
24th Jul 2025396 AMAQI
24th Jul 2025387 AMAQI
24th Jul 2025458 AMAQI
24th Jul 2025349 AMAQI
24th Jul 20251610 AMAQI
24th Jul 20251711 AMAQI
24th Jul 20251812 PMAQI
24th Jul 2025161 PMAQI
24th Jul 2025172 PMAQI
24th Jul 2025283 PMAQI
24th Jul 2025184 PMAQI
24th Jul 2025155 PMAQI
24th Jul 2025166 PMAQI
24th Jul 2025167 PMAQI
24th Jul 2025248 PMAQI
24th Jul 2025269 PMAQI
24th Jul 20252710 PMAQI
24th Jul 20252611 PMAQI
25th Jul 20252612 AMAQI
25th Jul 2025261 AMAQI
25th Jul 2025322 AMAQI
25th Jul 2025323 AMAQI
25th Jul 2025304 AMAQI
25th Jul 2025305 AMAQI
28°C26/30°C
25th Jul 2025316 AMAQI
25th Jul 2025307 AMAQI
25th Jul 2025228 AMAQI
25th Jul 2025189 AMAQI
25th Jul 20251710 AMAQI
25th Jul 20251811 AMAQI
25th Jul 20252012 PMAQI
25th Jul 2025171 PMAQI
25th Jul 2025172 PMAQI
25th Jul 2025173 PMAQI
25th Jul 2025174 PMAQI
25th Jul 2025265 PMAQI
25th Jul 2025316 PMAQI
25th Jul 2025377 PMAQI
25th Jul 2025388 PMAQI
25th Jul 2025369 PMAQI
25th Jul 20253810 PMAQI
25th Jul 20253611 PMAQI
26th Jul 20254012 AMAQI
26th Jul 2025371 AMAQI
26th Jul 2025412 AMAQI
26th Jul 2025393 AMAQI
26th Jul 2025384 AMAQI
26th Jul 2025385 AMAQI
27°C26/29°C
26th Jul 2025386 AMAQI
26th Jul 2025367 AMAQI
26th Jul 2025218 AMAQI
26th Jul 2025199 AMAQI
26th Jul 20251910 AMAQI
26th Jul 20252011 AMAQI
26th Jul 20251912 PMAQI
26th Jul 2025201 PMAQI
26th Jul 2025192 PMAQI
26th Jul 2025193 PMAQI
26th Jul 2025174 PMAQI
26th Jul 2025165 PMAQI
26th Jul 2025156 PMAQI
26th Jul 2025207 PMAQI
26th Jul 2025288 PMAQI
26th Jul 2025289 PMAQI
26th Jul 20252810 PMAQI
26th Jul 20252811 PMAQI
27th Jul 20252812 AMAQI
27th Jul 2025321 AMAQI
27th Jul 2025392 AMAQI
27th Jul 2025383 AMAQI
27th Jul 2025334 AMAQI
27th Jul 2025335 AMAQI
28°C26/30°C
27th Jul 2025346 AMAQI
27th Jul 2025347 AMAQI
27th Jul 2025268 AMAQI
27th Jul 2025219 AMAQI
27th Jul 20252210 AMAQI
27th Jul 20252111 AMAQI
27th Jul 20252112 PMAQI
27th Jul 2025231 PMAQI
27th Jul 2025202 PMAQI
27th Jul 2025203 PMAQI
27th Jul 2025204 PMAQI
27th Jul 2025175 PMAQI
27th Jul 2025186 PMAQI
27th Jul 2025207 PMAQI
27th Jul 2025248 PMAQI
27th Jul 2025269 PMAQI
27th Jul 20252610 PMAQI
27th Jul 20252511 PMAQI
28th Jul 20252412 AMAQI
28th Jul 2025301 AMAQI
28th Jul 2025352 AMAQI
28th Jul 2025343 AMAQI
28th Jul 2025334 AMAQI
28th Jul 2025325 AMAQI
28°C27/30°C
28th Jul 2025326 AMAQI
28th Jul 2025327 AMAQI
28th Jul 2025218 AMAQI
28th Jul 2025209 AMAQI
28th Jul 20251710 AMAQI
28th Jul 20251811 AMAQI
28th Jul 20251912 PMAQI
28th Jul 2025181 PMAQI
28th Jul 2025172 PMAQI
28th Jul 2025173 PMAQI
28th Jul 2025164 PMAQI
28th Jul 2025165 PMAQI
28th Jul 2025166 PMAQI
28th Jul 2025187 PMAQI
28th Jul 2025248 PMAQI
28th Jul 2025249 PMAQI
28th Jul 20252410 PMAQI
28th Jul 20252611 PMAQI
29th Jul 20252612 AMAQI
29th Jul 2025321 AMAQI
29th Jul 2025342 AMAQI
29th Jul 2025323 AMAQI
29th Jul 2025294 AMAQI
29th Jul 2025305 AMAQI
28°C27/29°C
29th Jul 2025306 AMAQI
29th Jul 2025287 AMAQI
29th Jul 2025228 AMAQI
29th Jul 2025189 AMAQI
29th Jul 20251810 AMAQI
29th Jul 20252111 AMAQI
29th Jul 20252112 PMAQI
29th Jul 2025171 PMAQI
29th Jul 2025172 PMAQI
29th Jul 2025173 PMAQI
29th Jul 2025184 PMAQI
29th Jul 2025195 PMAQI
29th Jul 2025176 PMAQI
29th Jul 2025207 PMAQI
29th Jul 2025258 PMAQI
29th Jul 2025259 PMAQI
29th Jul 20253010 PMAQI
29th Jul 20252411 PMAQI
30th Jul 20252412 AMAQI
30th Jul 2025261 AMAQI
30th Jul 2025262 AMAQI
30th Jul 2025253 AMAQI
30th Jul 2025264 AMAQI
30th Jul 2025335 AMAQI
29°C27/30°C
30th Jul 2025366 AMAQI
30th Jul 2025367 AMAQI
30th Jul 2025428 AMAQI
30th Jul 2025389 AMAQI
30th Jul 20253510 AMAQI
30th Jul 20253211 AMAQI
30th Jul 20253312 PMAQI
30th Jul 2025391 PMAQI
30th Jul 2025362 PMAQI
30th Jul 2025403 PMAQI
30th Jul 2025384 PMAQI
30th Jul 2025335 PMAQI
30th Jul 2025386 PMAQI
30th Jul 2025407 PMAQI
30th Jul 2025248 PMAQI
30th Jul 2025229 PMAQI
30th Jul 20252310 PMAQI
30th Jul 20252311 PMAQI
31st Jul 20254012 AMAQI
31st Jul 2025371 AMAQI
31st Jul 2025402 AMAQI
31st Jul 2025393 AMAQI
31st Jul 2025394 AMAQI
31st Jul 2025395 AMAQI
29°C28/29°C
31st Jul 2025396 AMAQI
31st Jul 2025397 AMAQI
31st Jul 2025398 AMAQI
31st Jul 2025399 AMAQI
31st Jul 20254910 AMAQI
31st Jul 20253011 AMAQI
31st Jul 20252312 PMAQI
31st Jul 2025231 PMAQI
31st Jul 2025222 PMAQI
31st Jul 2025213 PMAQI
31st Jul 2025204 PMAQI
31st Jul 2025215 PMAQI
31st Jul 2025466 PMAQI
31st Jul 2025447 PMAQI
31st Jul 2025498 PMAQI
31st Jul 2025529 PMAQI
31st Jul 20255510 PMAQI
31st Jul 20255411 PMAQI
1st Aug 20255712 AMAQI
1st Aug 2025561 AMAQI
1st Aug 2025552 AMAQI
1st Aug 2025543 AMAQI
1st Aug 2025534 AMAQI
1st Aug 2025555 AMAQI
29°C28/30°C
1st Aug 2025556 AMAQI
1st Aug 2025557 AMAQI
1st Aug 2025498 AMAQI
1st Aug 2025509 AMAQI
1st Aug 20254810 AMAQI
1st Aug 20255011 AMAQI
1st Aug 20255312 PMAQI
1st Aug 2025481 PMAQI
1st Aug 2025532 PMAQI
1st Aug 2025543 PMAQI
1st Aug 2025524 PMAQI
1st Aug 2025485 PMAQI
1st Aug 2025496 PMAQI
1st Aug 2025507 PMAQI
1st Aug 2025538 PMAQI
1st Aug 2025549 PMAQI
1st Aug 20255610 PMAQI
1st Aug 20255711 PMAQI
2nd Aug 20255512 AMAQI
2nd Aug 2025551 AMAQI
2nd Aug 2025552 AMAQI
2nd Aug 2025563 AMAQI
2nd Aug 2025554 AMAQI
2nd Aug 2025555 AMAQI
29°C28/30°C
2nd Aug 2025556 AMAQI
2nd Aug 2025547 AMAQI
2nd Aug 2025438 AMAQI
2nd Aug 2025429 AMAQI
2nd Aug 20254010 AMAQI
2nd Aug 20254211 AMAQI
2nd Aug 20254712 PMAQI
2nd Aug 2025431 PMAQI
2nd Aug 2025522 PMAQI
2nd Aug 2025563 PMAQI
2nd Aug 2025574 PMAQI
2nd Aug 2025645 PMAQI
2nd Aug 2025656 PMAQI
2nd Aug 2025627 PMAQI
2nd Aug 2025608 PMAQI
2nd Aug 2025599 PMAQI
2nd Aug 20255910 PMAQI
2nd Aug 20256111 PMAQI
3rd Aug 20256012 AMAQI
3rd Aug 2025561 AMAQI
3rd Aug 2025552 AMAQI
3rd Aug 2025543 AMAQI
3rd Aug 2025544 AMAQI
3rd Aug 2025545 AMAQI
29°C28/31°C
3rd Aug 2025556 AMAQI
6 AM3rd Aug 2025557 AMAQI
3rd Aug 2025588 AMAQI
3rd Aug 2025649 AMAQI
3rd Aug 20256210 AMAQI
3rd Aug 20256011 AMAQI
3rd Aug 20255512 PMAQI
12 PM7 PM
12 AM
5 AM
--°C/°C
Day time
Avg. Highest Time
6 AM - 7 AM
38AQI
2 hours / Day
60 hours / Month
Avg. Lowest Time
9 AM - 6 PM
27AQI
10 hours / Day
300 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 9 AM to 6 PM (Avg. 27).
Night time
Avg. Highest Time
2 AM - 5 AM
38AQI
4 hours / Day
120 hours / Month
Avg. Lowest Time
8 PM - 11 PM
34AQI
4 hours / Day
120 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 2 AM to 5 AM (Avg. 38), while the lowest AQI was between 8 PM to 11 PM (Avg. 34).
2025 Days Vs Air Quality
City Archives Sub Station, Basuo, Hainan, China
2025
52%
111
46%
99
2%
4
Total number of days with different AQI categories in last 215 days in 2025 (150 days remaining)
Good
111 DaysModerate
99 DaysPoor
4 DaysUnhealthy
0 DaysSevere
0 DaysHazardous
0 DaysUnder WHO’s Safe Air Quality Limits: 52%
Health Risk Level:
Considerable
In 2025, 52% of 215 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 Archives Sub Station, Basuo, 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
102AQI
102AQI
2nd January 2025
81AQI
81AQI
3rd January 2025
95AQI
95AQI
4th January 2025
88AQI
88AQI
5th January 2025
103AQI
103AQI
6th January 2025
93AQI
93AQI
7th January 2025
83AQI
83AQI
8th January 2025
88AQI
88AQI
9th January 2025
97AQI
97AQI
10th January 2025
91AQI
91AQI
11th January 2025
86AQI
86AQI
12th January 2025
87AQI
87AQI
13th January 2025
73AQI
73AQI
14th January 2025
73AQI
73AQI
15th January 2025
88AQI
88AQI
16th January 2025
92AQI
92AQI
17th January 2025
99AQI
99AQI
18th January 2025
89AQI
89AQI
19th January 2025
98AQI
98AQI
20th January 2025
100AQI
100AQI
21st January 2025
88AQI
88AQI
22nd January 2025
99AQI
99AQI
23rd January 2025
88AQI
88AQI
24th January 2025
66AQI
66AQI
25th January 2025
69AQI
69AQI
26th January 2025
51AQI
51AQI
27th January 2025
63AQI
63AQI
28th January 2025
67AQI
67AQI
29th January 2025
68AQI
68AQI
30th January 2025
66AQI
66AQI
31st January 2025
53AQI
53AQI
1st February 2025
46AQI
46AQI
2nd February 2025
58AQI
58AQI
3rd February 2025
61AQI
61AQI
4th February 2025
51AQI
51AQI
5th February 2025
47AQI
47AQI
6th February 2025
60AQI
60AQI
7th February 2025
58AQI
58AQI
8th February 2025
54AQI
54AQI
9th February 2025
64AQI
64AQI
10th February 2025
59AQI
59AQI
11th February 2025
57AQI
57AQI
12th February 2025
58AQI
58AQI
13th February 2025
61AQI
61AQI
14th February 2025
50AQI
50AQI
15th February 2025
68AQI
68AQI
16th February 2025
58AQI
58AQI
17th February 2025
80AQI
80AQI
18th February 2025
61AQI
61AQI
19th February 2025
92AQI
92AQI
20th February 2025
70AQI
70AQI
21st February 2025
65AQI
65AQI
22nd February 2025
49AQI
49AQI
23rd February 2025
43AQI
43AQI
24th February 2025
35AQI
35AQI
25th February 2025
35AQI
35AQI
26th February 2025
48AQI
48AQI
27th February 2025
58AQI
58AQI
28th February 2025
53AQI
53AQI
1st March 2025
58AQI
58AQI
2nd March 2025
50AQI
50AQI
3rd March 2025
57AQI
57AQI
4th March 2025
54AQI
54AQI
5th March 2025
70AQI
70AQI
6th March 2025
34AQI
34AQI
7th March 2025
45AQI
45AQI
8th March 2025
30AQI
30AQI
9th March 2025
57AQI
57AQI
10th March 2025
61AQI
61AQI
11th March 2025
59AQI
59AQI
12th March 2025
48AQI
48AQI
13th March 2025
47AQI
47AQI
14th March 2025
40AQI
40AQI
15th March 2025
48AQI
48AQI
16th March 2025
48AQI
48AQI
17th March 2025
67AQI
67AQI
18th March 2025
60AQI
60AQI
19th March 2025
74AQI
74AQI
20th March 2025
69AQI
69AQI
21st March 2025
83AQI
83AQI
22nd March 2025
72AQI
72AQI
23rd March 2025
74AQI
74AQI
24th March 2025
68AQI
68AQI
25th March 2025
61AQI
61AQI
26th March 2025
53AQI
53AQI
27th March 2025
53AQI
53AQI
28th March 2025
68AQI
68AQI
29th March 2025
42AQI
42AQI
30th March 2025
30AQI
30AQI
31st March 2025
31AQI
31AQI
1st April 2025
36AQI
36AQI
2nd April 2025
56AQI
56AQI
3rd April 2025
61AQI
61AQI
4th April 2025
59AQI
59AQI
5th April 2025
58AQI
58AQI
6th April 2025
46AQI
46AQI
7th April 2025
54AQI
54AQI
8th April 2025
51AQI
51AQI
9th April 2025
58AQI
58AQI
10th April 2025
57AQI
57AQI
11th April 2025
69AQI
69AQI
12th April 2025
56AQI
56AQI
13th April 2025
108AQI
108AQI
14th April 2025
106AQI
106AQI
15th April 2025
89AQI
89AQI
16th April 2025
76AQI
76AQI
17th April 2025
74AQI
74AQI
18th April 2025
62AQI
62AQI
19th April 2025
49AQI
49AQI
20th April 2025
55AQI
55AQI
21st April 2025
55AQI
55AQI
22nd April 2025
54AQI
54AQI
23rd April 2025
46AQI
46AQI
24th April 2025
55AQI
55AQI
25th April 2025
53AQI
53AQI
26th April 2025
52AQI
52AQI
27th April 2025
50AQI
50AQI
28th April 2025
51AQI
51AQI
29th April 2025
36AQI
36AQI
30th April 2025
49AQI
49AQI
1st May 2025
41AQI
41AQI
2nd May 2025
57AQI
57AQI
3rd May 2025
57AQI
57AQI
4th May 2025
57AQI
57AQI
5th May 2025
44AQI
44AQI
6th May 2025
55AQI
55AQI
7th May 2025
57AQI
57AQI
8th May 2025
49AQI
49AQI
9th May 2025
52AQI
52AQI
10th May 2025
40AQI
40AQI
11th May 2025
46AQI
46AQI
12th May 2025
57AQI
57AQI
13th May 2025
55AQI
55AQI
14th May 2025
44AQI
44AQI
15th May 2025
35AQI
35AQI
16th May 2025
32AQI
32AQI
17th May 2025
32AQI
32AQI
18th May 2025
32AQI
32AQI
19th May 2025
30AQI
30AQI
20th May 2025
30AQI
30AQI
21st May 2025
29AQI
29AQI
22nd May 2025
28AQI
28AQI
23rd May 2025
27AQI
27AQI
24th May 2025
28AQI
28AQI
25th May 2025
35AQI
35AQI
26th May 2025
47AQI
47AQI
27th May 2025
44AQI
44AQI
28th May 2025
36AQI
36AQI
29th May 2025
33AQI
33AQI
30th May 2025
37AQI
37AQI
31st May 2025
30AQI
30AQI
1st June 2025
32AQI
32AQI
2nd June 2025
32AQI
32AQI
3rd June 2025
31AQI
31AQI
4th June 2025
32AQI
32AQI
5th June 2025
30AQI
30AQI
6th June 2025
33AQI
33AQI
7th June 2025
27AQI
27AQI
8th June 2025
28AQI
28AQI
9th June 2025
39AQI
39AQI
10th June 2025
41AQI
41AQI
11th June 2025
45AQI
45AQI
12th June 2025
32AQI
32AQI
13th June 2025
34AQI
34AQI
14th June 2025
34AQI
34AQI
15th June 2025
31AQI
31AQI
16th June 2025
29AQI
29AQI
17th June 2025
33AQI
33AQI
18th June 2025
34AQI
34AQI
19th June 2025
35AQI
35AQI
20th June 2025
35AQI
35AQI
21st June 2025
36AQI
36AQI
22nd June 2025
44AQI
44AQI
23rd June 2025
38AQI
38AQI
24th June 2025
39AQI
39AQI
25th June 2025
38AQI
38AQI
26th June 2025
32AQI
32AQI
27th June 2025
31AQI
31AQI
28th June 2025
28AQI
28AQI
29th June 2025
27AQI
27AQI
30th June 2025
28AQI
28AQI
1st July 2025
31AQI
31AQI
2nd July 2025
27AQI
27AQI
3rd July 2025
24AQI
24AQI
4th July 2025
23AQI
23AQI
5th July 2025
24AQI
24AQI
6th July 2025
23AQI
23AQI
7th July 2025
23AQI
23AQI
8th July 2025
26AQI
26AQI
9th July 2025
32AQI
32AQI
10th July 2025
32AQI
32AQI
11th July 2025
41AQI
41AQI
12th July 2025
35AQI
35AQI
13th July 2025
35AQI
35AQI
14th July 2025
42AQI
42AQI
15th July 2025
40AQI
40AQI
16th July 2025
35AQI
35AQI
17th July 2025
34AQI
34AQI
18th July 2025
36AQI
36AQI
19th July 2025
31AQI
31AQI
20th July 2025
29AQI
29AQI
21st July 2025
28AQI
28AQI
22nd July 2025
26AQI
26AQI
23rd July 2025
23AQI
23AQI
24th July 2025
25AQI
25AQI
25th July 2025
28AQI
28AQI
26th July 2025
27AQI
27AQI
27th July 2025
26AQI
26AQI
28th July 2025
24AQI
24AQI
29th July 2025
24AQI
24AQI
30th July 2025
31AQI
31AQI
31st July 2025
39AQI
39AQI
1st August 2025
53AQI
53AQI
2nd August 2025
53AQI
53AQI
83AQI
57AQI
55AQI
59AQI
41AQI
34AQI
30AQI
53AQI
No. of days
Jan.Feb.Mar.Apr.MayJun.Jul.Aug.Sep.Oct.Nov.Dec.Total Days
202551AQI
29
2
8
20
12
19
7
21
2
23
8
30
31
2
111
99
4
Highest AQI recorded in
January83AQI
Lowest AQI recorded in
July30AQI
202447AQI
2
19
5
11
1
16
5
1
3
15
19
4
29
1
31
31
27
2
19
10
2
21
9
26
5
203
102
9
Highest AQI recorded in
December79AQI
Lowest AQI recorded in
July31AQI
202354AQI
1
8
2
1
1
8
4
2
1
1
1
5
2
9
4
1
3
18
12
42
36
6
Highest AQI recorded in
March82AQI
Lowest AQI recorded in
July17AQI
202244AQI
8
20
1
15
5
1
8
22
1
11
5
1
28
3
30
18
1
5
4
11
14
20
3
4
8
1
159
84
4
1
Highest AQI recorded in
January65AQI
Lowest AQI recorded in
August13AQI
202148AQI
22
8
1
3
24
1
14
16
1
23
7
29
2
27
3
30
1
31
30
25
4
10
18
2
1
28
2
223
125
14
1
Highest AQI recorded in
January91AQI
Lowest AQI recorded in
September23AQI
202042AQI
2
6
15
1
28
31
30
1
27
3
14
17
12
16
2
3
21
7
162
65
9
Highest AQI recorded in
December80AQI
Lowest AQI recorded in
August21AQI
Most & Least Polluted Years Over the Last 6 Years
Most Polluted Year Recorded
2023(Avg.)
54AQILeast Polluted Year Recorded
2020(Avg.)
42AQICity Archives Sub Station's annual 2025 AQI (51) shows an average percentage change of 10.2% (worsened AQI) compared to previous years: 2020 (42), 2021 (48), 2022 (44), 2023 (54), 2024 (47).
