Koh Chang Maesai, Mae Sai, Chiang Rai, Thailand 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+
October Air Quality Analysis
Koh Chang Maesai, Mae Sai, Chiang Rai, Thailand
2021
2022
2024
2025
AQI
.
Days
AQI Trends: Highest and Lowest
Highest AQI recorded on
17th Oct 2022
120AQILowest AQI recorded on
16th Oct 2021
13AQISame Day Analysis (6th October ):
On this day, AQI across the 4 years varied significantly: 2025 ranks 2nd highest AQI at 64 of Moderate air quality, showing improvement over 2021 on the same day.
Download 2024 Annual Data
World Air Quality Report
Day & Night AQI Trend: 7th Oct - 8th Oct 2025
Koh Chang Maesai, Mae Sai, Chiang Rai, Thailand
AQI
Day
Night
.
6 AM7th Oct 2025
6 PM
5 AM8th Oct 2025
Day time
Avg. Highest Time
12AMNaNth undefined
AQI
Avg. Lowest Time
12AMNaNth undefined
AQI
Night time
Avg. Highest Time
2AM8th Oct
111AQI
Avg. Lowest Time
9PM7th Oct
43AQI
In the last 24 hours,
Koh Chang Maesai's AQI reached its highest point of 111 at 2 AM during the Night, while the lowest point, undefined, was recorded at 5 PM during the Night between 7th Oct and 8th Oct 2025.
Day & Night AQI Trend : Sep - Oct 2025
Koh Chang Maesai, Mae Sai, Chiang Rai, Thailand
SepOct
08th - 09th09th - 10th10th - 11th11th - 12th12th - 13th13th - 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
Day
Night
8th Sep 2025536 AMAQI
8th Sep 2025487 AMAQI
8th Sep 2025598 AMAQI
8th Sep 2025569 AMAQI
8th Sep 20255010 AMAQI
8th Sep 20255411 AMAQI
8th Sep 20255512 PMAQI
8th Sep 2025521 PMAQI
8th Sep 2025502 PMAQI
8th Sep 2025483 PMAQI
8th Sep 2025484 PMAQI
8th Sep 2025525 PMAQI
8th Sep 2025526 PMAQI
8th Sep 2025557 PMAQI
8th Sep 2025578 PMAQI
8th Sep 2025589 PMAQI
8th Sep 20255610 PMAQI
8th Sep 20255711 PMAQI
9th Sep 20255712 AMAQI
9th Sep 2025581 AMAQI
9th Sep 2025542 AMAQI
9th Sep 2025533 AMAQI
9th Sep 2025544 AMAQI
9th Sep 2025555 AMAQI
25°C21/32°C
9th Sep 2025546 AMAQI
9th Sep 2025467 AMAQI
9th Sep 2025328 AMAQI
9th Sep 2025549 AMAQI
9th Sep 20254410 AMAQI
9th Sep 20254411 AMAQI
9th Sep 20255612 PMAQI
9th Sep 2025541 PMAQI
9th Sep 2025392 PMAQI
9th Sep 2025293 PMAQI
9th Sep 2025434 PMAQI
9th Sep 2025345 PMAQI
9th Sep 2025506 PMAQI
9th Sep 2025547 PMAQI
9th Sep 2025548 PMAQI
9th Sep 2025529 PMAQI
9th Sep 20256210 PMAQI
9th Sep 20255111 PMAQI
10th Sep 20255312 AMAQI
10th Sep 2025561 AMAQI
10th Sep 2025542 AMAQI
10th Sep 2025543 AMAQI
10th Sep 2025544 AMAQI
10th Sep 2025545 AMAQI
25°C19/32°C
10th Sep 2025546 AMAQI
10th Sep 2025407 AMAQI
10th Sep 2025478 AMAQI
10th Sep 2025359 AMAQI
10th Sep 20253810 AMAQI
10th Sep 20254411 AMAQI
10th Sep 20253612 PMAQI
10th Sep 2025401 PMAQI
10th Sep 2025412 PMAQI
10th Sep 2025293 PMAQI
10th Sep 2025334 PMAQI
10th Sep 2025355 PMAQI
10th Sep 2025486 PMAQI
10th Sep 2025467 PMAQI
10th Sep 2025508 PMAQI
10th Sep 2025489 PMAQI
10th Sep 20254610 PMAQI
10th Sep 20255011 PMAQI
11th Sep 20255112 AMAQI
11th Sep 2025521 AMAQI
11th Sep 2025522 AMAQI
11th Sep 2025523 AMAQI
11th Sep 2025524 AMAQI
11th Sep 2025525 AMAQI
24°C20/28°C
11th Sep 2025526 AMAQI
11th Sep 2025387 AMAQI
11th Sep 2025328 AMAQI
11th Sep 2025399 AMAQI
11th Sep 20253410 AMAQI
11th Sep 20253111 AMAQI
11th Sep 20253012 PMAQI
11th Sep 2025271 PMAQI
11th Sep 2025282 PMAQI
11th Sep 2025353 PMAQI
11th Sep 2025424 PMAQI
11th Sep 2025435 PMAQI
11th Sep 2025406 PMAQI
11th Sep 2025487 PMAQI
11th Sep 2025468 PMAQI
11th Sep 2025519 PMAQI
11th Sep 20255210 PMAQI
11th Sep 20255211 PMAQI
12th Sep 20255212 AMAQI
12th Sep 2025511 AMAQI
12th Sep 2025512 AMAQI
12th Sep 2025513 AMAQI
12th Sep 2025504 AMAQI
12th Sep 2025515 AMAQI
23°C20/27°C
12th Sep 2025526 AMAQI
12th Sep 2025497 AMAQI
12th Sep 2025308 AMAQI
12th Sep 2025449 AMAQI
12th Sep 20253910 AMAQI
12th Sep 20253411 AMAQI
12th Sep 20254312 PMAQI
12th Sep 2025371 PMAQI
12th Sep 2025442 PMAQI
12th Sep 2025373 PMAQI
12th Sep 2025324 PMAQI
12th Sep 2025465 PMAQI
12th Sep 2025526 PMAQI
12th Sep 2025547 PMAQI
12th Sep 2025568 PMAQI
12th Sep 2025539 PMAQI
12th Sep 20255910 PMAQI
12th Sep 20256111 PMAQI
13th Sep 20255612 AMAQI
13th Sep 2025531 AMAQI
13th Sep 2025522 AMAQI
13th Sep 2025523 AMAQI
13th Sep 2025524 AMAQI
13th Sep 2025525 AMAQI
24°C22/30°C
13th Sep 2025516 AMAQI
13th Sep 2025367 AMAQI
13th Sep 2025368 AMAQI
13th Sep 2025549 AMAQI
13th Sep 20254710 AMAQI
13th Sep 20254011 AMAQI
13th Sep 20253912 PMAQI
13th Sep 2025351 PMAQI
13th Sep 2025342 PMAQI
13th Sep 2025333 PMAQI
13th Sep 2025394 PMAQI
13th Sep 2025445 PMAQI
13th Sep 2025466 PMAQI
13th Sep 2025507 PMAQI
13th Sep 2025528 PMAQI
13th Sep 2025569 PMAQI
13th Sep 20255110 PMAQI
13th Sep 20255511 PMAQI
14th Sep 20255412 AMAQI
14th Sep 2025541 AMAQI
14th Sep 2025532 AMAQI
14th Sep 2025533 AMAQI
14th Sep 2025534 AMAQI
14th Sep 2025535 AMAQI
24°C22/31°C
14th Sep 2025526 AMAQI
14th Sep 2025377 AMAQI
14th Sep 2025328 AMAQI
14th Sep 2025289 AMAQI
14th Sep 20253510 AMAQI
14th Sep 20252911 AMAQI
14th Sep 20253612 PMAQI
14th Sep 2025291 PMAQI
14th Sep 2025312 PMAQI
14th Sep 2025343 PMAQI
14th Sep 2025304 PMAQI
14th Sep 2025325 PMAQI
14th Sep 2025376 PMAQI
14th Sep 2025487 PMAQI
14th Sep 2025528 PMAQI
14th Sep 2025509 PMAQI
14th Sep 20255010 PMAQI
14th Sep 20255611 PMAQI
15th Sep 20255412 AMAQI
15th Sep 2025551 AMAQI
15th Sep 2025532 AMAQI
15th Sep 2025533 AMAQI
15th Sep 2025534 AMAQI
15th Sep 2025535 AMAQI
23°C19/30°C
15th Sep 2025526 AMAQI
15th Sep 2025497 AMAQI
15th Sep 2025478 AMAQI
15th Sep 2025469 AMAQI
15th Sep 20254210 AMAQI
15th Sep 20253811 AMAQI
15th Sep 20253012 PMAQI
15th Sep 2025531 PMAQI
15th Sep 2025342 PMAQI
15th Sep 2025303 PMAQI
15th Sep 2025464 PMAQI
15th Sep 2025425 PMAQI
15th Sep 2025426 PMAQI
15th Sep 2025547 PMAQI
15th Sep 2025548 PMAQI
15th Sep 2025549 PMAQI
15th Sep 20255610 PMAQI
15th Sep 20255111 PMAQI
16th Sep 20255212 AMAQI
16th Sep 2025511 AMAQI
16th Sep 2025532 AMAQI
16th Sep 2025533 AMAQI
16th Sep 2025544 AMAQI
16th Sep 2025545 AMAQI
24°C19/31°C
16th Sep 2025546 AMAQI
16th Sep 2025587 AMAQI
16th Sep 2025408 AMAQI
16th Sep 2025369 AMAQI
16th Sep 20253610 AMAQI
16th Sep 20253511 AMAQI
16th Sep 20253012 PMAQI
16th Sep 2025261 PMAQI
16th Sep 2025292 PMAQI
16th Sep 2025303 PMAQI
16th Sep 2025304 PMAQI
16th Sep 2025285 PMAQI
16th Sep 2025386 PMAQI
16th Sep 2025437 PMAQI
16th Sep 2025448 PMAQI
16th Sep 2025459 PMAQI
16th Sep 20255010 PMAQI
16th Sep 20254511 PMAQI
17th Sep 20255212 AMAQI
17th Sep 2025521 AMAQI
17th Sep 2025532 AMAQI
17th Sep 2025523 AMAQI
17th Sep 2025524 AMAQI
17th Sep 2025525 AMAQI
25°C20/30°C
17th Sep 2025526 AMAQI
17th Sep 2025517 AMAQI
17th Sep 2025328 AMAQI
17th Sep 2025469 AMAQI
17th Sep 20254410 AMAQI
17th Sep 20255111 AMAQI
17th Sep 20253812 PMAQI
17th Sep 2025381 PMAQI
17th Sep 2025322 PMAQI
17th Sep 2025363 PMAQI
17th Sep 2025404 PMAQI
17th Sep 2025525 PMAQI
17th Sep 2025476 PMAQI
17th Sep 2025517 PMAQI
17th Sep 2025508 PMAQI
17th Sep 2025559 PMAQI
17th Sep 20255610 PMAQI
17th Sep 20255711 PMAQI
18th Sep 20255412 AMAQI
18th Sep 2025521 AMAQI
18th Sep 2025512 AMAQI
18th Sep 2025513 AMAQI
18th Sep 2025514 AMAQI
18th Sep 2025525 AMAQI
25°C21/32°C
18th Sep 2025526 AMAQI
18th Sep 2025347 AMAQI
18th Sep 2025338 AMAQI
18th Sep 2025349 AMAQI
18th Sep 20253910 AMAQI
18th Sep 20253611 AMAQI
18th Sep 20253812 PMAQI
18th Sep 2025431 PMAQI
18th Sep 2025382 PMAQI
18th Sep 2025323 PMAQI
18th Sep 2025334 PMAQI
18th Sep 2025365 PMAQI
18th Sep 2025396 PMAQI
18th Sep 2025547 PMAQI
18th Sep 2025588 PMAQI
18th Sep 2025589 PMAQI
18th Sep 20255410 PMAQI
18th Sep 20255211 PMAQI
19th Sep 20255012 AMAQI
19th Sep 2025521 AMAQI
19th Sep 2025522 AMAQI
19th Sep 2025523 AMAQI
19th Sep 2025524 AMAQI
19th Sep 2025525 AMAQI
25°C19/32°C
19th Sep 2025516 AMAQI
19th Sep 2025257 AMAQI
19th Sep 2025158 AMAQI
19th Sep 2025199 AMAQI
19th Sep 20251310 AMAQI
19th Sep 20252411 AMAQI
19th Sep 20253112 PMAQI
19th Sep 2025301 PMAQI
19th Sep 2025262 PMAQI
19th Sep 2025243 PMAQI
19th Sep 2025224 PMAQI
19th Sep 2025225 PMAQI
19th Sep 2025256 PMAQI
19th Sep 2025367 PMAQI
19th Sep 2025388 PMAQI
19th Sep 2025469 PMAQI
19th Sep 20255110 PMAQI
19th Sep 20254811 PMAQI
20th Sep 20255412 AMAQI
20th Sep 2025501 AMAQI
20th Sep 2025502 AMAQI
20th Sep 2025483 AMAQI
20th Sep 2025504 AMAQI
20th Sep 2025495 AMAQI
24°C19/32°C
20th Sep 2025496 AMAQI
20th Sep 2025307 AMAQI
20th Sep 2025188 AMAQI
20th Sep 2025189 AMAQI
20th Sep 20251610 AMAQI
20th Sep 20252311 AMAQI
20th Sep 20252412 PMAQI
20th Sep 2025261 PMAQI
20th Sep 2025242 PMAQI
20th Sep 2025263 PMAQI
20th Sep 2025234 PMAQI
20th Sep 2025215 PMAQI
20th Sep 2025226 PMAQI
20th Sep 2025357 PMAQI
20th Sep 2025368 PMAQI
20th Sep 2025379 PMAQI
20th Sep 20253610 PMAQI
20th Sep 20253611 PMAQI
21st Sep 20254012 AMAQI
21st Sep 2025471 AMAQI
21st Sep 2025442 AMAQI
21st Sep 2025453 AMAQI
21st Sep 2025484 AMAQI
21st Sep 2025475 AMAQI
24°C19/30°C
21st Sep 2025486 AMAQI
21st Sep 2025287 AMAQI
21st Sep 2025268 AMAQI
21st Sep 2025289 AMAQI
21st Sep 20252210 AMAQI
21st Sep 20251811 AMAQI
21st Sep 20251612 PMAQI
21st Sep 2025191 PMAQI
21st Sep 2025182 PMAQI
21st Sep 2025183 PMAQI
21st Sep 2025184 PMAQI
21st Sep 2025185 PMAQI
21st Sep 2025186 PMAQI
21st Sep 2025307 PMAQI
21st Sep 2025348 PMAQI
21st Sep 2025419 PMAQI
21st Sep 20254310 PMAQI
21st Sep 20253811 PMAQI
22nd Sep 20253812 AMAQI
22nd Sep 2025411 AMAQI
22nd Sep 2025432 AMAQI
22nd Sep 2025393 AMAQI
22nd Sep 2025404 AMAQI
22nd Sep 2025405 AMAQI
25°C20/30°C
22nd Sep 2025406 AMAQI
22nd Sep 2025227 AMAQI
22nd Sep 2025198 AMAQI
22nd Sep 2025199 AMAQI
22nd Sep 20251510 AMAQI
22nd Sep 20252011 AMAQI
22nd Sep 20251812 PMAQI
22nd Sep 2025181 PMAQI
22nd Sep 2025192 PMAQI
22nd Sep 2025203 PMAQI
22nd Sep 2025224 PMAQI
22nd Sep 2025225 PMAQI
22nd Sep 2025216 PMAQI
22nd Sep 2025267 PMAQI
22nd Sep 2025268 PMAQI
22nd Sep 2025279 PMAQI
22nd Sep 20252810 PMAQI
22nd Sep 20252811 PMAQI
23rd Sep 20253412 AMAQI
23rd Sep 2025411 AMAQI
23rd Sep 2025392 AMAQI
23rd Sep 2025373 AMAQI
23rd Sep 2025374 AMAQI
23rd Sep 2025375 AMAQI
25°C22/30°C
23rd Sep 2025376 AMAQI
23rd Sep 2025207 AMAQI
23rd Sep 2025188 AMAQI
23rd Sep 2025149 AMAQI
23rd Sep 20251410 AMAQI
23rd Sep 20251911 AMAQI
23rd Sep 20251812 PMAQI
23rd Sep 2025171 PMAQI
23rd Sep 2025182 PMAQI
23rd Sep 2025183 PMAQI
23rd Sep 2025174 PMAQI
23rd Sep 2025255 PMAQI
23rd Sep 2025206 PMAQI
23rd Sep 2025247 PMAQI
23rd Sep 2025278 PMAQI
23rd Sep 2025289 PMAQI
23rd Sep 20252610 PMAQI
23rd Sep 20252711 PMAQI
24th Sep 20252912 AMAQI
24th Sep 2025411 AMAQI
24th Sep 2025402 AMAQI
24th Sep 2025383 AMAQI
24th Sep 2025374 AMAQI
24th Sep 2025395 AMAQI
24°C20/31°C
24th Sep 2025386 AMAQI
24th Sep 2025217 AMAQI
24th Sep 2025158 AMAQI
24th Sep 2025279 AMAQI
24th Sep 20251210 AMAQI
24th Sep 20251611 AMAQI
24th Sep 20251612 PMAQI
24th Sep 2025161 PMAQI
24th Sep 2025162 PMAQI
24th Sep 2025153 PMAQI
24th Sep 2025164 PMAQI
24th Sep 2025175 PMAQI
24th Sep 2025196 PMAQI
24th Sep 2025277 PMAQI
24th Sep 2025238 PMAQI
24th Sep 2025259 PMAQI
24th Sep 20252510 PMAQI
24th Sep 20252611 PMAQI
25th Sep 20253012 AMAQI
25th Sep 2025401 AMAQI
25th Sep 2025382 AMAQI
25th Sep 2025343 AMAQI
25th Sep 2025364 AMAQI
25th Sep 2025325 AMAQI
23°C19/28°C
25th Sep 2025366 AMAQI
25th Sep 2025247 AMAQI
25th Sep 2025208 AMAQI
25th Sep 2025219 AMAQI
25th Sep 20252010 AMAQI
25th Sep 20252111 AMAQI
25th Sep 20252012 PMAQI
25th Sep 2025181 PMAQI
25th Sep 2025182 PMAQI
25th Sep 2025183 PMAQI
25th Sep 2025174 PMAQI
25th Sep 2025195 PMAQI
25th Sep 2025186 PMAQI
25th Sep 2025167 PMAQI
25th Sep 2025198 PMAQI
25th Sep 2025309 PMAQI
25th Sep 20254710 PMAQI
25th Sep 20253511 PMAQI
26th Sep 20251912 AMAQI
26th Sep 2025151 AMAQI
26th Sep 2025142 AMAQI
26th Sep 2025143 AMAQI
26th Sep 2025104 AMAQI
26th Sep 202565 AMAQI
25°C20/32°C
26th Sep 202566 AMAQI
26th Sep 2025107 AMAQI
26th Sep 2025118 AMAQI
26th Sep 2025119 AMAQI
26th Sep 20251210 AMAQI
26th Sep 20251411 AMAQI
26th Sep 20251512 PMAQI
26th Sep 2025161 PMAQI
26th Sep 2025172 PMAQI
26th Sep 2025193 PMAQI
26th Sep 2025204 PMAQI
26th Sep 2025205 PMAQI
26th Sep 2025206 PMAQI
26th Sep 2025207 PMAQI
26th Sep 2025198 PMAQI
26th Sep 2025239 PMAQI
26th Sep 20252210 PMAQI
26th Sep 20252111 PMAQI
27th Sep 20252112 AMAQI
27th Sep 2025201 AMAQI
27th Sep 2025182 AMAQI
27th Sep 2025143 AMAQI
27th Sep 2025154 AMAQI
27th Sep 2025165 AMAQI
23°C19/26°C
27th Sep 2025166 AMAQI
27th Sep 2025137 AMAQI
27th Sep 2025168 AMAQI
27th Sep 2025189 AMAQI
27th Sep 20252210 AMAQI
27th Sep 20252311 AMAQI
27th Sep 20251912 PMAQI
27th Sep 2025171 PMAQI
27th Sep 2025152 PMAQI
27th Sep 2025113 PMAQI
27th Sep 2025114 PMAQI
27th Sep 2025115 PMAQI
27th Sep 2025126 PMAQI
27th Sep 2025157 PMAQI
27th Sep 2025178 PMAQI
27th Sep 2025179 PMAQI
27th Sep 20252010 PMAQI
27th Sep 20251511 PMAQI
28th Sep 20251512 AMAQI
28th Sep 2025131 AMAQI
28th Sep 2025112 AMAQI
28th Sep 2025113 AMAQI
28th Sep 2025114 AMAQI
28th Sep 2025115 AMAQI
23°C19/27°C
28th Sep 2025116 AMAQI
28th Sep 2025117 AMAQI
28th Sep 2025118 AMAQI
28th Sep 2025139 AMAQI
28th Sep 20251510 AMAQI
28th Sep 20251511 AMAQI
28th Sep 20251412 PMAQI
28th Sep 2025131 PMAQI
28th Sep 2025152 PMAQI
28th Sep 2025163 PMAQI
28th Sep 2025214 PMAQI
28th Sep 2025195 PMAQI
28th Sep 2025176 PMAQI
28th Sep 2025207 PMAQI
28th Sep 2025228 PMAQI
28th Sep 2025329 PMAQI
28th Sep 20253010 PMAQI
28th Sep 20252211 PMAQI
29th Sep 20253712 AMAQI
29th Sep 2025541 AMAQI
29th Sep 2025372 AMAQI
29th Sep 2025383 AMAQI
29th Sep 2025434 AMAQI
29th Sep 2025445 AMAQI
24°C19/32°C
29th Sep 2025446 AMAQI
29th Sep 2025497 AMAQI
29th Sep 2025528 AMAQI
29th Sep 2025539 AMAQI
29th Sep 20253710 AMAQI
29th Sep 20254211 AMAQI
29th Sep 20253512 PMAQI
29th Sep 2025471 PMAQI
29th Sep 2025362 PMAQI
29th Sep 2025293 PMAQI
29th Sep 2025194 PMAQI
29th Sep 2025175 PMAQI
29th Sep 2025356 PMAQI
29th Sep 2025327 PMAQI
29th Sep 2025238 PMAQI
29th Sep 2025329 PMAQI
29th Sep 20255810 PMAQI
29th Sep 20256411 PMAQI
30th Sep 20255112 AMAQI
30th Sep 2025391 AMAQI
30th Sep 2025312 AMAQI
30th Sep 2025333 AMAQI
30th Sep 2025214 AMAQI
30th Sep 2025165 AMAQI
24°C19/32°C
30th Sep 2025186 AMAQI
30th Sep 2025167 AMAQI
30th Sep 2025188 AMAQI
30th Sep 2025279 AMAQI
30th Sep 20251910 AMAQI
30th Sep 20251111 AMAQI
30th Sep 20253312 PMAQI
30th Sep 2025331 PMAQI
30th Sep 2025362 PMAQI
30th Sep 2025363 PMAQI
30th Sep 2025224 PMAQI
30th Sep 2025265 PMAQI
30th Sep 2025276 PMAQI
30th Sep 2025237 PMAQI
30th Sep 2025248 PMAQI
30th Sep 2025479 PMAQI
30th Sep 20255310 PMAQI
30th Sep 20253611 PMAQI
1st Oct 20252412 AMAQI
1st Oct 2025391 AMAQI
1st Oct 2025382 AMAQI
1st Oct 2025263 AMAQI
1st Oct 2025204 AMAQI
1st Oct 2025315 AMAQI
21°C20/23°C
1st Oct 2025406 AMAQI
1st Oct 2025207 AMAQI
1st Oct 202568 AMAQI
1st Oct 2025249 AMAQI
1st Oct 20253410 AMAQI
1st Oct 20254411 AMAQI
1st Oct 20252812 PMAQI
1st Oct 2025221 PMAQI
1st Oct 2025312 PMAQI
1st Oct 2025393 PMAQI
1st Oct 2025314 PMAQI
1st Oct 2025265 PMAQI
1st Oct 2025186 PMAQI
1st Oct 2025297 PMAQI
1st Oct 2025388 PMAQI
1st Oct 2025459 PMAQI
1st Oct 20253210 PMAQI
1st Oct 20254311 PMAQI
2nd Oct 20254712 AMAQI
2nd Oct 2025491 AMAQI
2nd Oct 2025512 AMAQI
2nd Oct 2025393 AMAQI
2nd Oct 2025424 AMAQI
2nd Oct 2025385 AMAQI
21°C20/24°C
2nd Oct 2025386 AMAQI
2nd Oct 2025367 AMAQI
2nd Oct 2025358 AMAQI
2nd Oct 2025389 AMAQI
2nd Oct 20254110 AMAQI
2nd Oct 20254411 AMAQI
2nd Oct 20255412 PMAQI
2nd Oct 2025531 PMAQI
2nd Oct 2025502 PMAQI
2nd Oct 2025373 PMAQI
2nd Oct 2025394 PMAQI
2nd Oct 2025435 PMAQI
2nd Oct 2025536 PMAQI
2nd Oct 2025507 PMAQI
2nd Oct 2025348 PMAQI
2nd Oct 2025349 PMAQI
2nd Oct 20253610 PMAQI
2nd Oct 20254211 PMAQI
3rd Oct 20254312 AMAQI
3rd Oct 2025331 AMAQI
3rd Oct 2025282 AMAQI
3rd Oct 2025343 AMAQI
3rd Oct 2025414 AMAQI
3rd Oct 2025405 AMAQI
22°C19/28°C
3rd Oct 2025366 AMAQI
3rd Oct 2025467 AMAQI
3rd Oct 2025498 AMAQI
3rd Oct 2025399 AMAQI
3rd Oct 20253110 AMAQI
3rd Oct 20254511 AMAQI
3rd Oct 20254312 PMAQI
3rd Oct 2025391 PMAQI
3rd Oct 2025412 PMAQI
3rd Oct 2025483 PMAQI
3rd Oct 2025534 PMAQI
3rd Oct 2025405 PMAQI
3rd Oct 2025406 PMAQI
3rd Oct 2025557 PMAQI
3rd Oct 2025598 PMAQI
3rd Oct 2025559 PMAQI
3rd Oct 20255110 PMAQI
3rd Oct 20255211 PMAQI
4th Oct 20254812 AMAQI
4th Oct 2025491 AMAQI
4th Oct 2025502 AMAQI
4th Oct 2025523 AMAQI
4th Oct 2025514 AMAQI
4th Oct 2025525 AMAQI
24°C18/31°C
4th Oct 2025506 AMAQI
4th Oct 2025427 AMAQI
4th Oct 2025428 AMAQI
4th Oct 2025529 AMAQI
4th Oct 20255310 AMAQI
4th Oct 20255611 AMAQI
4th Oct 20255412 PMAQI
4th Oct 2025531 PMAQI
4th Oct 2025502 PMAQI
4th Oct 2025513 PMAQI
4th Oct 2025504 PMAQI
4th Oct 2025505 PMAQI
4th Oct 2025526 PMAQI
4th Oct 2025517 PMAQI
4th Oct 2025528 PMAQI
4th Oct 2025569 PMAQI
4th Oct 20255610 PMAQI
4th Oct 20255511 PMAQI
5th Oct 20255412 AMAQI
5th Oct 2025551 AMAQI
5th Oct 2025562 AMAQI
5th Oct 2025553 AMAQI
5th Oct 2025584 AMAQI
5th Oct 2025585 AMAQI
25°C20/31°C
5th Oct 2025606 AMAQI
5th Oct 2025497 AMAQI
5th Oct 2025538 AMAQI
5th Oct 2025549 AMAQI
5th Oct 20256310 AMAQI
5th Oct 20256511 AMAQI
5th Oct 20255512 PMAQI
5th Oct 2025461 PMAQI
5th Oct 2025572 PMAQI
5th Oct 2025603 PMAQI
5th Oct 2025554 PMAQI
5th Oct 2025525 PMAQI
5th Oct 2025536 PMAQI
5th Oct 2025427 PMAQI
5th Oct 2025528 PMAQI
5th Oct 2025609 PMAQI
5th Oct 20256510 PMAQI
5th Oct 20257011 PMAQI
6th Oct 20256612 AMAQI
6th Oct 2025531 AMAQI
6th Oct 2025502 AMAQI
6th Oct 2025653 AMAQI
6th Oct 2025684 AMAQI
6th Oct 2025675 AMAQI
25°C21/31°C
6th Oct 2025606 AMAQI
6th Oct 2025397 AMAQI
6th Oct 2025408 AMAQI
6th Oct 2025409 AMAQI
6th Oct 20254310 AMAQI
6th Oct 20255611 AMAQI
6th Oct 20256612 PMAQI
6th Oct 2025621 PMAQI
6th Oct 2025582 PMAQI
6th Oct 2025573 PMAQI
6th Oct 2025574 PMAQI
6th Oct 2025505 PMAQI
6th Oct 2025456 PMAQI
6th Oct 2025627 PMAQI
6th Oct 2025678 PMAQI
6th Oct 2025649 PMAQI
6th Oct 20256010 PMAQI
6th Oct 20256611 PMAQI
7th Oct 20256712 AMAQI
25°C21/32°C
7th Oct 2025696 PMAQI
7th Oct 2025577 PMAQI
7th Oct 2025528 PMAQI
7th Oct 2025439 PMAQI
7th Oct 20255710 PMAQI
7th Oct 20256611 PMAQI
8th Oct 20257312 AMAQI
8th Oct 2025931 AMAQI
8th Oct 20251112 AMAQI
8th Oct 2025723 AMAQI
8th Oct 2025714 AMAQI
8th Oct 2025755 AMAQI
--°C/°C
8th Oct 2025756 AMAQI
6 AM12 PM
6 PM
12 AM
5 AM
--°C/°C
Day time
Avg. Highest Time
6 AM
44AQI
1 hours / Day
30 hours / Month
Avg. Lowest Time
8 AM
30AQI
1 hours / Day
30 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 6 AM to 6 AM (Avg. 44), while the lowest AQI was between 8 AM to 8 AM (Avg. 30).
Night time
Avg. Highest Time
12 AM - 2 AM
46AQI
3 hours / Day
90 hours / Month
Avg. Lowest Time
7 PM - 8 PM
41AQI
2 hours / Day
60 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 12 AM to 2 AM (Avg. 46), while the lowest AQI was between 7 PM to 8 PM (Avg. 41).
2025 Days Vs Air Quality
Koh Chang Maesai, Mae Sai, Chiang Rai, Thailand
2025
43%
120
29%
80
24%
66
5%
13
Total number of days with different AQI categories in last 280 days in 2025 (85 days remaining)
Good
120 DaysModerate
80 DaysPoor
66 DaysUnhealthy
13 DaysSevere
0 DaysHazardous
0 DaysUnder WHO’s Safe Air Quality Limits: 43%
Health Risk Level:
Significant
In 2025, 43% of 280 days were within WHO’s safe air quality limits, and 57% exceeded them. The risk of health issues is Significant, especially for those with existing respiratory or heart conditions.
Annual Air Quality Insights
Koh Chang Maesai, Mae Sai, Chiang Rai, Thailand
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
92AQI
92AQI
2nd January 2025
88AQI
88AQI
3rd January 2025
78AQI
78AQI
4th January 2025
83AQI
83AQI
5th January 2025
94AQI
94AQI
6th January 2025
110AQI
110AQI
7th January 2025
116AQI
116AQI
8th January 2025
112AQI
112AQI
9th January 2025
119AQI
119AQI
10th January 2025
115AQI
115AQI
11th January 2025
107AQI
107AQI
12th January 2025
96AQI
96AQI
13th January 2025
90AQI
90AQI
14th January 2025
96AQI
96AQI
15th January 2025
105AQI
105AQI
16th January 2025
102AQI
102AQI
17th January 2025
96AQI
96AQI
18th January 2025
98AQI
98AQI
19th January 2025
99AQI
99AQI
20th January 2025
107AQI
107AQI
21st January 2025
121AQI
121AQI
22nd January 2025
126AQI
126AQI
23rd January 2025
125AQI
125AQI
24th January 2025
108AQI
108AQI
25th January 2025
104AQI
104AQI
26th January 2025
99AQI
99AQI
27th January 2025
81AQI
81AQI
28th January 2025
81AQI
81AQI
29th January 2025
96AQI
96AQI
30th January 2025
116AQI
116AQI
31st January 2025
106AQI
106AQI
1st February 2025
100AQI
100AQI
2nd February 2025
110AQI
110AQI
3rd February 2025
109AQI
109AQI
4th February 2025
117AQI
117AQI
5th February 2025
118AQI
118AQI
6th February 2025
116AQI
116AQI
7th February 2025
108AQI
108AQI
8th February 2025
109AQI
109AQI
9th February 2025
92AQI
92AQI
10th February 2025
106AQI
106AQI
11th February 2025
111AQI
111AQI
12th February 2025
113AQI
113AQI
13th February 2025
104AQI
104AQI
14th February 2025
108AQI
108AQI
15th February 2025
101AQI
101AQI
16th February 2025
127AQI
127AQI
17th February 2025
125AQI
125AQI
18th February 2025
127AQI
127AQI
19th February 2025
120AQI
120AQI
20th February 2025
118AQI
118AQI
21st February 2025
112AQI
112AQI
22nd February 2025
107AQI
107AQI
23rd February 2025
102AQI
102AQI
24th February 2025
83AQI
83AQI
25th February 2025
72AQI
72AQI
26th February 2025
61AQI
61AQI
27th February 2025
67AQI
67AQI
28th February 2025
72AQI
72AQI
1st March 2025
78AQI
78AQI
2nd March 2025
83AQI
83AQI
3rd March 2025
98AQI
98AQI
4th March 2025
114AQI
114AQI
5th March 2025
132AQI
132AQI
6th March 2025
130AQI
130AQI
7th March 2025
140AQI
140AQI
8th March 2025
118AQI
118AQI
9th March 2025
111AQI
111AQI
10th March 2025
103AQI
103AQI
11th March 2025
113AQI
113AQI
12th March 2025
121AQI
121AQI
13th March 2025
108AQI
108AQI
14th March 2025
118AQI
118AQI
15th March 2025
131AQI
131AQI
16th March 2025
132AQI
132AQI
17th March 2025
143AQI
143AQI
18th March 2025
130AQI
130AQI
19th March 2025
87AQI
87AQI
20th March 2025
90AQI
90AQI
21st March 2025
102AQI
102AQI
22nd March 2025
130AQI
130AQI
23rd March 2025
139AQI
139AQI
24th March 2025
151AQI
151AQI
25th March 2025
155AQI
155AQI
26th March 2025
157AQI
157AQI
27th March 2025
159AQI
159AQI
28th March 2025
164AQI
164AQI
29th March 2025
163AQI
163AQI
30th March 2025
164AQI
164AQI
31st March 2025
159AQI
159AQI
1st April 2025
152AQI
152AQI
2nd April 2025
151AQI
151AQI
3rd April 2025
151AQI
151AQI
4th April 2025
154AQI
154AQI
5th April 2025
154AQI
154AQI
6th April 2025
149AQI
149AQI
7th April 2025
127AQI
127AQI
8th April 2025
125AQI
125AQI
9th April 2025
140AQI
140AQI
10th April 2025
141AQI
141AQI
11th April 2025
146AQI
146AQI
12th April 2025
118AQI
118AQI
13th April 2025
84AQI
84AQI
14th April 2025
69AQI
69AQI
15th April 2025
61AQI
61AQI
16th April 2025
59AQI
59AQI
17th April 2025
60AQI
60AQI
18th April 2025
59AQI
59AQI
19th April 2025
63AQI
63AQI
20th April 2025
66AQI
66AQI
21st April 2025
70AQI
70AQI
22nd April 2025
86AQI
86AQI
23rd April 2025
89AQI
89AQI
24th April 2025
103AQI
103AQI
25th April 2025
109AQI
109AQI
26th April 2025
114AQI
114AQI
27th April 2025
111AQI
111AQI
28th April 2025
82AQI
82AQI
29th April 2025
75AQI
75AQI
30th April 2025
67AQI
67AQI
1st May 2025
55AQI
55AQI
2nd May 2025
55AQI
55AQI
3rd May 2025
51AQI
51AQI
4th May 2025
55AQI
55AQI
5th May 2025
59AQI
59AQI
6th May 2025
62AQI
62AQI
7th May 2025
70AQI
70AQI
8th May 2025
75AQI
75AQI
9th May 2025
64AQI
64AQI
10th May 2025
70AQI
70AQI
11th May 2025
70AQI
70AQI
12th May 2025
49AQI
49AQI
13th May 2025
54AQI
54AQI
14th May 2025
57AQI
57AQI
15th May 2025
39AQI
39AQI
16th May 2025
40AQI
40AQI
17th May 2025
42AQI
42AQI
18th May 2025
34AQI
34AQI
19th May 2025
36AQI
36AQI
20th May 2025
42AQI
42AQI
21st May 2025
48AQI
48AQI
22nd May 2025
48AQI
48AQI
23rd May 2025
49AQI
49AQI
24th May 2025
42AQI
42AQI
25th May 2025
37AQI
37AQI
26th May 2025
34AQI
34AQI
27th May 2025
43AQI
43AQI
28th May 2025
36AQI
36AQI
29th May 2025
41AQI
41AQI
30th May 2025
40AQI
40AQI
31st May 2025
36AQI
36AQI
1st June 2025
40AQI
40AQI
2nd June 2025
43AQI
43AQI
3rd June 2025
47AQI
47AQI
4th June 2025
53AQI
53AQI
5th June 2025
54AQI
54AQI
6th June 2025
60AQI
60AQI
7th June 2025
61AQI
61AQI
8th June 2025
57AQI
57AQI
9th June 2025
57AQI
57AQI
10th June 2025
48AQI
48AQI
11th June 2025
38AQI
38AQI
12th June 2025
44AQI
44AQI
13th June 2025
45AQI
45AQI
14th June 2025
46AQI
46AQI
15th June 2025
43AQI
43AQI
16th June 2025
38AQI
38AQI
17th June 2025
42AQI
42AQI
18th June 2025
45AQI
45AQI
19th June 2025
45AQI
45AQI
20th June 2025
48AQI
48AQI
21st June 2025
51AQI
51AQI
22nd June 2025
55AQI
55AQI
23rd June 2025
48AQI
48AQI
24th June 2025
48AQI
48AQI
25th June 2025
48AQI
48AQI
26th June 2025
50AQI
50AQI
27th June 2025
46AQI
46AQI
28th June 2025
46AQI
46AQI
29th June 2025
47AQI
47AQI
30th June 2025
49AQI
49AQI
1st July 2025
50AQI
50AQI
2nd July 2025
46AQI
46AQI
3rd July 2025
51AQI
51AQI
4th July 2025
48AQI
48AQI
5th July 2025
47AQI
47AQI
6th July 2025
41AQI
41AQI
7th July 2025
40AQI
40AQI
8th July 2025
43AQI
43AQI
9th July 2025
50AQI
50AQI
10th July 2025
49AQI
49AQI
11th July 2025
47AQI
47AQI
12th July 2025
45AQI
45AQI
13th July 2025
46AQI
46AQI
14th July 2025
47AQI
47AQI
15th July 2025
44AQI
44AQI
16th July 2025
45AQI
45AQI
17th July 2025
48AQI
48AQI
18th July 2025
45AQI
45AQI
19th July 2025
49AQI
49AQI
20th July 2025
43AQI
43AQI
21st July 2025
49AQI
49AQI
22nd July 2025
48AQI
48AQI
23rd July 2025
42AQI
42AQI
24th July 2025
39AQI
39AQI
25th July 2025
39AQI
39AQI
26th July 2025
42AQI
42AQI
27th July 2025
40AQI
40AQI
28th July 2025
40AQI
40AQI
29th July 2025
47AQI
47AQI
30th July 2025
45AQI
45AQI
31st July 2025
53AQI
53AQI
1st August 2025
57AQI
57AQI
2nd August 2025
52AQI
52AQI
3rd August 2025
54AQI
54AQI
4th August 2025
56AQI
56AQI
5th August 2025
53AQI
53AQI
6th August 2025
46AQI
46AQI
7th August 2025
41AQI
41AQI
8th August 2025
31AQI
31AQI
9th August 2025
27AQI
27AQI
10th August 2025
26AQI
26AQI
11th August 2025
37AQI
37AQI
12th August 2025
48AQI
48AQI
13th August 2025
49AQI
49AQI
14th August 2025
51AQI
51AQI
15th August 2025
49AQI
49AQI
16th August 2025
47AQI
47AQI
17th August 2025
47AQI
47AQI
18th August 2025
52AQI
52AQI
19th August 2025
48AQI
48AQI
20th August 2025
51AQI
51AQI
21st August 2025
52AQI
52AQI
22nd August 2025
50AQI
50AQI
23rd August 2025
48AQI
48AQI
24th August 2025
47AQI
47AQI
25th August 2025
52AQI
52AQI
26th August 2025
48AQI
48AQI
27th August 2025
48AQI
48AQI
28th August 2025
46AQI
46AQI
29th August 2025
47AQI
47AQI
30th August 2025
47AQI
47AQI
31st August 2025
47AQI
47AQI
1st September 2025
50AQI
50AQI
2nd September 2025
49AQI
49AQI
3rd September 2025
52AQI
52AQI
4th September 2025
42AQI
42AQI
5th September 2025
49AQI
49AQI
6th September 2025
49AQI
49AQI
7th September 2025
53AQI
53AQI
8th September 2025
54AQI
54AQI
9th September 2025
50AQI
50AQI
10th September 2025
46AQI
46AQI
11th September 2025
44AQI
44AQI
12th September 2025
49AQI
49AQI
13th September 2025
47AQI
47AQI
14th September 2025
44AQI
44AQI
15th September 2025
48AQI
48AQI
16th September 2025
43AQI
43AQI
17th September 2025
49AQI
49AQI
18th September 2025
46AQI
46AQI
19th September 2025
37AQI
37AQI
20th September 2025
35AQI
35AQI
21st September 2025
33AQI
33AQI
22nd September 2025
28AQI
28AQI
23rd September 2025
27AQI
27AQI
24th September 2025
26AQI
26AQI
25th September 2025
26AQI
26AQI
26th September 2025
17AQI
17AQI
27th September 2025
17AQI
17AQI
28th September 2025
16AQI
16AQI
29th September 2025
37AQI
37AQI
30th September 2025
37AQI
37AQI
1st October 2025
29AQI
29AQI
2nd October 2025
43AQI
43AQI
3rd October 2025
45AQI
45AQI
4th October 2025
52AQI
52AQI
5th October 2025
55AQI
55AQI
6th October 2025
64AQI
64AQI
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
102AQI
104AQI
127AQI
105AQI
49AQI
48AQI
45AQI
47AQI
40AQI
48AQI
No. of days
Jan.Feb.Mar.Apr.MayJun.Jul.Aug.Sep.Oct.Nov.Dec.Total Days
202573AQI
15
16
7
21
5
18
8
14
11
5
18
13
22
8
29
2
21
10
27
3
3
3
120
80
66
13
Highest AQI recorded in
March127AQI
Lowest AQI recorded in
September40AQI
202455AQI
14
2
1
2
1
8
4
30
31
30
21
8
11
20
7
23
31
138
100
3
2
1
Highest AQI recorded in
April226AQI
Lowest AQI recorded in
July34AQI
202390AQI
2
1
28
3
30
4
Highest AQI recorded in
November91AQI
Lowest AQI recorded in
December90AQI
202289AQI
2
13
15
1
6
13
1
3
13
15
1
6
9
14
7
13
4
1
19
1
1
1
17
11
9
5
2
57
59
56
31
Highest AQI recorded in
March140AQI
Lowest AQI recorded in
July26AQI
202166AQI
3
20
8
4
18
6
8
14
1
1
1
1
6
3
25
6
26
4
20
7
13
12
5
18
2
3
8
103
93
33
14
Highest AQI recorded in
March150AQI
Lowest AQI recorded in
August36AQI
202071AQI
1
5
7
1
3
8
7
2
3
6
7
26
4
27
4
31
24
3
20
5
8
22
7
24
146
69
10
9
12
9
Highest AQI recorded in
March319AQI
Lowest AQI recorded in
August27AQI
Most & Least Polluted Years Over the Last 6 Years
Most Polluted Year Recorded
2023(Avg.)
90AQILeast Polluted Year Recorded
2024(Avg.)
55AQIKoh Chang Maesai's annual 2025 AQI (73) shows an average percentage change of 1.9% (worsened AQI) compared to previous years: 2020 (71), 2021 (66), 2022 (89), 2023 (90), 2024 (55).
