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HistoryAQIPM2.5PM10COSO2NO2O3

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

Mae Sai, Chiang Rai, Thailand

2021
2022
2023
2024
2025
AQI
.
Days

AQI Trends: Highest and Lowest

Highest AQI recorded on
18th Oct 2022
113AQI
Lowest AQI recorded on
16th Oct 2021
14AQI

Same Day Analysis (5th October ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 2nd highest AQI at 59 of Moderate air quality, showing improvement over 2023 on the same day.

Download 2024 Annual Data

World Air Quality Report

Globe

Day & Night AQI Trend: 5th Oct - 6th Oct 2025

Mae Sai, Chiang Rai, Thailand

AQI
Day
Night
.

6 AM5th Oct 2025

6 PM

5 AM6th Oct 2025

Day time
Avg. Highest Time
8AM5th Oct

63AQI

Avg. Lowest Time
1PM5th Oct

50AQI

Night time
Avg. Highest Time
11PM5th Oct

68AQI

Avg. Lowest Time
7PM5th Oct

50AQI

In the last 24 hours,

Mae Sai's AQI reached its highest point of 68 at 11 PM during the Night, while the lowest point, 50, was recorded at 7 PM during the Night between 5th Oct and 6th Oct 2025.

Day & Night AQI Trend : Sep - Oct 2025

Mae Sai, Chiang Rai, Thailand

SepOct
06th - 07th07th - 08th08th - 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
Day
Night
6th Sep 2025526 AMAQI
6th Sep 2025407 AMAQI
6th Sep 2025418 AMAQI
6th Sep 2025519 AMAQI
6th Sep 20255010 AMAQI
6th Sep 20254311 AMAQI
6th Sep 20254212 PMAQI
6th Sep 2025271 PMAQI
6th Sep 2025422 PMAQI
6th Sep 2025443 PMAQI
6th Sep 2025434 PMAQI
6th Sep 2025365 PMAQI
6th Sep 2025446 PMAQI
6th Sep 2025597 PMAQI
6th Sep 2025618 PMAQI
6th Sep 2025589 PMAQI
6th Sep 20255110 PMAQI
6th Sep 20255411 PMAQI
7th Sep 20255512 AMAQI
7th Sep 2025541 AMAQI
7th Sep 2025532 AMAQI
7th Sep 2025523 AMAQI
7th Sep 2025534 AMAQI
7th Sep 2025525 AMAQI

27°C22/32°C

7th Sep 2025526 AMAQI
7th Sep 2025527 AMAQI
7th Sep 2025508 AMAQI
7th Sep 2025529 AMAQI
7th Sep 20255810 AMAQI
7th Sep 20255211 AMAQI
7th Sep 20255012 PMAQI
7th Sep 2025481 PMAQI
7th Sep 2025492 PMAQI
7th Sep 2025443 PMAQI
7th Sep 2025474 PMAQI
7th Sep 2025495 PMAQI
7th Sep 2025516 PMAQI
7th Sep 2025527 PMAQI
7th Sep 2025598 PMAQI
7th Sep 2025609 PMAQI
7th Sep 20256010 PMAQI
7th Sep 20255811 PMAQI
8th Sep 20255612 AMAQI
8th Sep 2025551 AMAQI
8th Sep 2025542 AMAQI
8th Sep 2025533 AMAQI
8th Sep 2025534 AMAQI
8th Sep 2025545 AMAQI

26°C22/32°C

8th Sep 2025536 AMAQI
8th Sep 2025497 AMAQI
8th Sep 2025598 AMAQI
8th Sep 2025559 AMAQI
8th Sep 20255010 AMAQI
8th Sep 20255511 AMAQI
8th Sep 20255512 PMAQI
8th Sep 2025541 PMAQI
8th Sep 2025492 PMAQI
8th Sep 2025483 PMAQI
8th Sep 2025494 PMAQI
8th Sep 2025535 PMAQI
8th Sep 2025536 PMAQI
8th Sep 2025567 PMAQI
8th Sep 2025588 PMAQI
8th Sep 2025599 PMAQI
8th Sep 20255710 PMAQI
8th Sep 20255711 PMAQI
9th Sep 20255812 AMAQI
9th Sep 2025581 AMAQI
9th Sep 2025542 AMAQI
9th Sep 2025533 AMAQI
9th Sep 2025544 AMAQI
9th Sep 2025555 AMAQI

26°C22/32°C

9th Sep 2025556 AMAQI
9th Sep 2025467 AMAQI
9th Sep 2025328 AMAQI
9th Sep 2025549 AMAQI
9th Sep 20254610 AMAQI
9th Sep 20254511 AMAQI
9th Sep 20255512 PMAQI
9th Sep 2025521 PMAQI
9th Sep 2025402 PMAQI
9th Sep 2025323 PMAQI
9th Sep 2025424 PMAQI
9th Sep 2025365 PMAQI
9th Sep 2025506 PMAQI
9th Sep 2025547 PMAQI
9th Sep 2025548 PMAQI
9th Sep 2025539 PMAQI
9th Sep 20255810 PMAQI
9th Sep 20255211 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

26°C22/31°C

10th Sep 2025546 AMAQI
10th Sep 2025407 AMAQI
10th Sep 2025468 AMAQI
10th Sep 2025389 AMAQI
10th Sep 20254110 AMAQI
10th Sep 20254311 AMAQI
10th Sep 20254012 PMAQI
10th Sep 2025411 PMAQI
10th Sep 2025432 PMAQI
10th Sep 2025323 PMAQI
10th Sep 2025374 PMAQI
10th Sep 2025365 PMAQI
10th Sep 2025486 PMAQI
10th Sep 2025477 PMAQI
10th Sep 2025508 PMAQI
10th Sep 2025499 PMAQI
10th Sep 20254610 PMAQI
10th Sep 20255011 PMAQI
11th Sep 20255112 AMAQI
11th Sep 2025531 AMAQI
11th Sep 2025522 AMAQI
11th Sep 2025523 AMAQI
11th Sep 2025524 AMAQI
11th Sep 2025525 AMAQI

25°C23/28°C

11th Sep 2025526 AMAQI
11th Sep 2025407 AMAQI
11th Sep 2025368 AMAQI
11th Sep 2025429 AMAQI
11th Sep 20253610 AMAQI
11th Sep 20253311 AMAQI
11th Sep 20252912 PMAQI
11th Sep 2025331 PMAQI
11th Sep 2025312 PMAQI
11th Sep 2025383 PMAQI
11th Sep 2025454 PMAQI
11th Sep 2025445 PMAQI
11th Sep 2025426 PMAQI
11th Sep 2025497 PMAQI
11th Sep 2025468 PMAQI
11th Sep 2025519 PMAQI
11th Sep 20255210 PMAQI
11th Sep 20255311 PMAQI
12th Sep 20255212 AMAQI
12th Sep 2025511 AMAQI
12th Sep 2025522 AMAQI
12th Sep 2025513 AMAQI
12th Sep 2025514 AMAQI
12th Sep 2025515 AMAQI

24°C22/27°C

12th Sep 2025526 AMAQI
12th Sep 2025507 AMAQI
12th Sep 2025348 AMAQI
12th Sep 2025449 AMAQI
12th Sep 20254110 AMAQI
12th Sep 20253711 AMAQI
12th Sep 20254612 PMAQI
12th Sep 2025411 PMAQI
12th Sep 2025492 PMAQI
12th Sep 2025393 PMAQI
12th Sep 2025354 PMAQI
12th Sep 2025495 PMAQI
12th Sep 2025556 PMAQI
12th Sep 2025557 PMAQI
12th Sep 2025588 PMAQI
12th Sep 2025549 PMAQI
12th Sep 20255910 PMAQI
12th Sep 20256211 PMAQI
13th Sep 20255712 AMAQI
13th Sep 2025541 AMAQI
13th Sep 2025522 AMAQI
13th Sep 2025523 AMAQI
13th Sep 2025524 AMAQI
13th Sep 2025525 AMAQI

25°C22/28°C

13th Sep 2025516 AMAQI
13th Sep 2025377 AMAQI
13th Sep 2025388 AMAQI
13th Sep 2025549 AMAQI
13th Sep 20254910 AMAQI
13th Sep 20254311 AMAQI
13th Sep 20253912 PMAQI
13th Sep 2025361 PMAQI
13th Sep 2025362 PMAQI
13th Sep 2025353 PMAQI
13th Sep 2025364 PMAQI
13th Sep 2025465 PMAQI
13th Sep 2025476 PMAQI
13th Sep 2025517 PMAQI
13th Sep 2025528 PMAQI
13th Sep 2025579 PMAQI
13th Sep 20255010 PMAQI
13th Sep 20255511 PMAQI
14th Sep 20255412 AMAQI
14th Sep 2025551 AMAQI
14th Sep 2025532 AMAQI
14th Sep 2025533 AMAQI
14th Sep 2025544 AMAQI
14th Sep 2025535 AMAQI

25°C23/30°C

14th Sep 2025536 AMAQI
14th Sep 2025407 AMAQI
14th Sep 2025368 AMAQI
14th Sep 2025319 AMAQI
14th Sep 20253610 AMAQI
14th Sep 20253111 AMAQI
14th Sep 20253812 PMAQI
14th Sep 2025331 PMAQI
14th Sep 2025352 PMAQI
14th Sep 2025313 PMAQI
14th Sep 2025324 PMAQI
14th Sep 2025335 PMAQI
14th Sep 2025386 PMAQI
14th Sep 2025487 PMAQI
14th Sep 2025528 PMAQI
14th Sep 2025519 PMAQI
14th Sep 20255010 PMAQI
14th Sep 20255311 PMAQI
15th Sep 20255512 AMAQI
15th Sep 2025551 AMAQI
15th Sep 2025532 AMAQI
15th Sep 2025533 AMAQI
15th Sep 2025544 AMAQI
15th Sep 2025545 AMAQI

25°C22/30°C

15th Sep 2025536 AMAQI
15th Sep 2025517 AMAQI
15th Sep 2025508 AMAQI
15th Sep 2025519 AMAQI
15th Sep 20254310 AMAQI
15th Sep 20253811 AMAQI
15th Sep 20253312 PMAQI
15th Sep 2025521 PMAQI
15th Sep 2025352 PMAQI
15th Sep 2025313 PMAQI
15th Sep 2025464 PMAQI
15th Sep 2025425 PMAQI
15th Sep 2025436 PMAQI
15th Sep 2025547 PMAQI
15th Sep 2025568 PMAQI
15th Sep 2025569 PMAQI
15th Sep 20255810 PMAQI
15th Sep 20255211 PMAQI
16th Sep 20255312 AMAQI
16th Sep 2025531 AMAQI
16th Sep 2025532 AMAQI
16th Sep 2025533 AMAQI
16th Sep 2025544 AMAQI
16th Sep 2025545 AMAQI

26°C21/31°C

16th Sep 2025556 AMAQI
16th Sep 2025607 AMAQI
16th Sep 2025468 AMAQI
16th Sep 2025379 AMAQI
16th Sep 20253610 AMAQI
16th Sep 20253811 AMAQI
16th Sep 20253512 PMAQI
16th Sep 2025291 PMAQI
16th Sep 2025292 PMAQI
16th Sep 2025313 PMAQI
16th Sep 2025314 PMAQI
16th Sep 2025305 PMAQI
16th Sep 2025396 PMAQI
16th Sep 2025457 PMAQI
16th Sep 2025478 PMAQI
16th Sep 2025479 PMAQI
16th Sep 20255010 PMAQI
16th Sep 20254611 PMAQI
17th Sep 20255312 AMAQI
17th Sep 2025531 AMAQI
17th Sep 2025532 AMAQI
17th Sep 2025523 AMAQI
17th Sep 2025524 AMAQI
17th Sep 2025525 AMAQI

25°C21/30°C

17th Sep 2025526 AMAQI
17th Sep 2025527 AMAQI
17th Sep 2025408 AMAQI
17th Sep 2025509 AMAQI
17th Sep 20254710 AMAQI
17th Sep 20255311 AMAQI
17th Sep 20253912 PMAQI
17th Sep 2025391 PMAQI
17th Sep 2025342 PMAQI
17th Sep 2025383 PMAQI
17th Sep 2025424 PMAQI
17th Sep 2025525 PMAQI
17th Sep 2025486 PMAQI
17th Sep 2025537 PMAQI
17th Sep 2025558 PMAQI
17th Sep 2025629 PMAQI
17th Sep 20255710 PMAQI
17th Sep 20255311 PMAQI
18th Sep 20255112 AMAQI
18th Sep 2025521 AMAQI
18th Sep 2025522 AMAQI
18th Sep 2025513 AMAQI
18th Sep 2025524 AMAQI
18th Sep 2025525 AMAQI

26°C21/32°C

18th Sep 2025526 AMAQI
18th Sep 2025477 AMAQI
18th Sep 2025508 AMAQI
18th Sep 2025529 AMAQI
18th Sep 20255010 AMAQI
18th Sep 20254511 AMAQI
18th Sep 20254312 PMAQI
18th Sep 2025461 PMAQI
18th Sep 2025422 PMAQI
18th Sep 2025353 PMAQI
18th Sep 2025354 PMAQI
18th Sep 2025405 PMAQI
18th Sep 2025436 PMAQI
18th Sep 2025557 PMAQI
18th Sep 2025608 PMAQI
18th Sep 2025619 PMAQI
18th Sep 20255810 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

26°C21/31°C

19th Sep 2025516 AMAQI
19th Sep 2025307 AMAQI
19th Sep 2025158 AMAQI
19th Sep 2025189 AMAQI
19th Sep 20251710 AMAQI
19th Sep 20252211 AMAQI
19th Sep 20252312 PMAQI
19th Sep 2025231 PMAQI
19th Sep 2025232 PMAQI
19th Sep 2025213 PMAQI
19th Sep 2025214 PMAQI
19th Sep 2025215 PMAQI
19th Sep 2025266 PMAQI
19th Sep 2025327 PMAQI
19th Sep 2025388 PMAQI
19th Sep 2025479 PMAQI
19th Sep 20255210 PMAQI
19th Sep 20254811 PMAQI
20th Sep 20254912 AMAQI
20th Sep 2025511 AMAQI
20th Sep 2025512 AMAQI
20th Sep 2025503 AMAQI
20th Sep 2025504 AMAQI
20th Sep 2025495 AMAQI

25°C22/31°C

20th Sep 2025506 AMAQI
20th Sep 2025337 AMAQI
20th Sep 2025258 AMAQI
20th Sep 2025219 AMAQI
20th Sep 20251810 AMAQI
20th Sep 20252211 AMAQI
20th Sep 20251912 PMAQI
20th Sep 2025211 PMAQI
20th Sep 2025202 PMAQI
20th Sep 2025213 PMAQI
20th Sep 2025204 PMAQI
20th Sep 2025205 PMAQI
20th Sep 2025236 PMAQI
20th Sep 2025277 PMAQI
20th Sep 2025288 PMAQI
20th Sep 2025339 PMAQI
20th Sep 20253010 PMAQI
20th Sep 20253011 PMAQI
21st Sep 20253112 AMAQI
21st Sep 2025431 AMAQI
21st Sep 2025412 AMAQI
21st Sep 2025433 AMAQI
21st Sep 2025474 AMAQI
21st Sep 2025465 AMAQI

25°C21/30°C

21st Sep 2025466 AMAQI
21st Sep 2025327 AMAQI
21st Sep 2025328 AMAQI
21st Sep 2025349 AMAQI
21st Sep 20252810 AMAQI
21st Sep 20252311 AMAQI
21st Sep 20251912 PMAQI
21st Sep 2025181 PMAQI
21st Sep 2025192 PMAQI
21st Sep 2025183 PMAQI
21st Sep 2025184 PMAQI
21st Sep 2025205 PMAQI
21st Sep 2025206 PMAQI
21st Sep 2025287 PMAQI
21st Sep 2025358 PMAQI
21st Sep 2025429 PMAQI
21st Sep 20254310 PMAQI
21st Sep 20254011 PMAQI
22nd Sep 20253812 AMAQI
22nd Sep 2025421 AMAQI
22nd Sep 2025422 AMAQI
22nd Sep 2025403 AMAQI
22nd Sep 2025404 AMAQI
22nd Sep 2025405 AMAQI

25°C22/30°C

22nd Sep 2025416 AMAQI
22nd Sep 2025257 AMAQI
22nd Sep 2025228 AMAQI
22nd Sep 2025239 AMAQI
22nd Sep 20251910 AMAQI
22nd Sep 20251911 AMAQI
22nd Sep 20251912 PMAQI
22nd Sep 2025201 PMAQI
22nd Sep 2025232 PMAQI
22nd Sep 2025213 PMAQI
22nd Sep 2025214 PMAQI
22nd Sep 2025235 PMAQI
22nd Sep 2025276 PMAQI
22nd Sep 2025277 PMAQI
22nd Sep 2025268 PMAQI
22nd Sep 2025279 PMAQI
22nd Sep 20252710 PMAQI
22nd Sep 20252911 PMAQI
23rd Sep 20253412 AMAQI
23rd Sep 2025371 AMAQI
23rd Sep 2025392 AMAQI
23rd Sep 2025383 AMAQI
23rd Sep 2025384 AMAQI
23rd Sep 2025375 AMAQI

24°C21/30°C

23rd Sep 2025376 AMAQI
23rd Sep 2025237 AMAQI
23rd Sep 2025218 AMAQI
23rd Sep 2025219 AMAQI
23rd Sep 20252110 AMAQI
23rd Sep 20251911 AMAQI
23rd Sep 20251812 PMAQI
23rd Sep 2025171 PMAQI
23rd Sep 2025172 PMAQI
23rd Sep 2025173 PMAQI
23rd Sep 2025184 PMAQI
23rd Sep 2025275 PMAQI
23rd Sep 2025276 PMAQI
23rd Sep 2025277 PMAQI
23rd Sep 2025298 PMAQI
23rd Sep 2025299 PMAQI
23rd Sep 20253010 PMAQI
23rd Sep 20252711 PMAQI
24th Sep 20252712 AMAQI
24th Sep 2025421 AMAQI
24th Sep 2025422 AMAQI
24th Sep 2025383 AMAQI
24th Sep 2025394 AMAQI
24th Sep 2025395 AMAQI

24°C20/29°C

24th Sep 2025396 AMAQI
24th Sep 2025227 AMAQI
24th Sep 2025188 AMAQI
24th Sep 2025229 AMAQI
24th Sep 20251710 AMAQI
24th Sep 20251611 AMAQI
24th Sep 20251612 PMAQI
24th Sep 2025161 PMAQI
24th Sep 2025162 PMAQI
24th Sep 2025163 PMAQI
24th Sep 2025184 PMAQI
24th Sep 2025185 PMAQI
24th Sep 2025206 PMAQI
24th Sep 2025287 PMAQI
24th Sep 2025278 PMAQI
24th Sep 2025299 PMAQI
24th Sep 20252810 PMAQI
24th Sep 20252811 PMAQI
25th Sep 20253212 AMAQI
25th Sep 2025401 AMAQI
25th Sep 2025392 AMAQI
25th Sep 2025383 AMAQI
25th Sep 2025394 AMAQI
25th Sep 2025375 AMAQI

24°C21/29°C

25th Sep 2025396 AMAQI
25th Sep 2025277 AMAQI
25th Sep 2025288 AMAQI
25th Sep 2025339 AMAQI
25th Sep 20253210 AMAQI
25th Sep 20252511 AMAQI
25th Sep 20252612 PMAQI
25th Sep 2025261 PMAQI
25th Sep 2025242 PMAQI
25th Sep 2025253 PMAQI
25th Sep 2025264 PMAQI
25th Sep 2025275 PMAQI
25th Sep 2025276 PMAQI
25th Sep 2025297 PMAQI
25th Sep 2025378 PMAQI
25th Sep 2025439 PMAQI
25th Sep 20254310 PMAQI
25th Sep 20253711 PMAQI
26th Sep 20253312 AMAQI
26th Sep 2025311 AMAQI
26th Sep 2025292 AMAQI
26th Sep 2025293 AMAQI
26th Sep 2025214 AMAQI
26th Sep 2025125 AMAQI

25°C22/31°C

26th Sep 2025136 AMAQI
26th Sep 2025147 AMAQI
26th Sep 2025198 AMAQI
26th Sep 2025259 AMAQI
26th Sep 20252610 AMAQI
26th Sep 20252511 AMAQI
26th Sep 20252312 PMAQI
26th Sep 2025221 PMAQI
26th Sep 2025212 PMAQI
26th Sep 2025233 PMAQI
26th Sep 2025234 PMAQI
26th Sep 2025225 PMAQI
26th Sep 2025226 PMAQI
26th Sep 2025257 PMAQI
26th Sep 2025278 PMAQI
26th Sep 2025309 PMAQI
26th Sep 20253010 PMAQI
26th Sep 20252811 PMAQI
27th Sep 20252812 AMAQI
27th Sep 2025261 AMAQI
27th Sep 2025222 AMAQI
27th Sep 2025203 AMAQI
27th Sep 2025244 AMAQI
27th Sep 2025235 AMAQI

24°C22/29°C

27th Sep 2025206 AMAQI
27th Sep 2025217 AMAQI
27th Sep 2025238 AMAQI
27th Sep 2025269 AMAQI
27th Sep 20252710 AMAQI
27th Sep 20252411 AMAQI
27th Sep 20251712 PMAQI
27th Sep 2025141 PMAQI
27th Sep 2025132 PMAQI
27th Sep 2025113 PMAQI
27th Sep 2025114 PMAQI
27th Sep 2025105 PMAQI
27th Sep 2025106 PMAQI
27th Sep 2025127 PMAQI
27th Sep 2025128 PMAQI
27th Sep 2025119 PMAQI
27th Sep 20251710 PMAQI
27th Sep 20251611 PMAQI
28th Sep 20251412 AMAQI
28th Sep 2025121 AMAQI
28th Sep 2025102 AMAQI
28th Sep 2025103 AMAQI
28th Sep 2025114 AMAQI
28th Sep 2025125 AMAQI

25°C22/30°C

28th Sep 2025126 AMAQI
28th Sep 2025167 AMAQI
28th Sep 2025188 AMAQI
28th Sep 2025159 AMAQI
28th Sep 20251310 AMAQI
28th Sep 20251211 AMAQI
28th Sep 20251212 PMAQI
28th Sep 2025121 PMAQI
28th Sep 2025132 PMAQI
28th Sep 2025143 PMAQI
28th Sep 2025164 PMAQI
28th Sep 2025175 PMAQI
28th Sep 2025246 PMAQI
28th Sep 2025367 PMAQI
28th Sep 2025378 PMAQI
28th Sep 2025419 PMAQI
28th Sep 20253910 PMAQI
28th Sep 20252911 PMAQI
29th Sep 20253612 AMAQI
29th Sep 2025461 AMAQI
29th Sep 2025422 AMAQI
29th Sep 2025403 AMAQI
29th Sep 2025404 AMAQI
29th Sep 2025405 AMAQI

26°C21/33°C

29th Sep 2025406 AMAQI
29th Sep 2025457 AMAQI
29th Sep 2025498 AMAQI
29th Sep 2025459 AMAQI
29th Sep 20253110 AMAQI
29th Sep 20253411 AMAQI
29th Sep 20253312 PMAQI
29th Sep 2025331 PMAQI
29th Sep 2025322 PMAQI
29th Sep 2025283 PMAQI
29th Sep 2025264 PMAQI
29th Sep 2025255 PMAQI
29th Sep 2025336 PMAQI
29th Sep 2025407 PMAQI
29th Sep 2025428 PMAQI
29th Sep 2025489 PMAQI
29th Sep 20256110 PMAQI
29th Sep 20257211 PMAQI
30th Sep 20256612 AMAQI
30th Sep 2025501 AMAQI
30th Sep 2025422 AMAQI
30th Sep 2025363 AMAQI
30th Sep 2025314 AMAQI
30th Sep 2025305 AMAQI

26°C21/34°C

30th Sep 2025286 AMAQI
30th Sep 2025227 AMAQI
30th Sep 2025238 AMAQI
30th Sep 2025279 AMAQI
30th Sep 20252810 AMAQI
30th Sep 20252411 AMAQI
30th Sep 20253512 PMAQI
30th Sep 2025411 PMAQI
30th Sep 2025432 PMAQI
30th Sep 2025423 PMAQI
30th Sep 2025354 PMAQI
30th Sep 2025355 PMAQI
30th Sep 2025406 PMAQI
30th Sep 2025377 PMAQI
30th Sep 2025388 PMAQI
30th Sep 2025509 PMAQI
30th Sep 20255610 PMAQI
30th Sep 20254511 PMAQI
1st Oct 20253412 AMAQI
1st Oct 2025461 AMAQI
1st Oct 2025462 AMAQI
1st Oct 2025373 AMAQI
1st Oct 2025364 AMAQI
1st Oct 2025455 AMAQI

23°C22/24°C

1st Oct 2025436 AMAQI
1st Oct 2025277 AMAQI
1st Oct 2025248 AMAQI
1st Oct 2025299 AMAQI
1st Oct 20253910 AMAQI
1st Oct 20254711 AMAQI
1st Oct 20254812 PMAQI
1st Oct 2025411 PMAQI
1st Oct 2025402 PMAQI
1st Oct 2025443 PMAQI
1st Oct 2025384 PMAQI
1st Oct 2025355 PMAQI
1st Oct 2025346 PMAQI
1st Oct 2025457 PMAQI
1st Oct 2025518 PMAQI
1st Oct 2025579 PMAQI
1st Oct 20254610 PMAQI
1st Oct 20254711 PMAQI
2nd Oct 20254712 AMAQI
2nd Oct 2025491 AMAQI
2nd Oct 2025532 AMAQI
2nd Oct 2025443 AMAQI
2nd Oct 2025434 AMAQI
2nd Oct 2025425 AMAQI

23°C22/26°C

2nd Oct 2025406 AMAQI
2nd Oct 2025447 AMAQI
2nd Oct 2025458 AMAQI
2nd Oct 2025459 AMAQI
2nd Oct 20254510 AMAQI
2nd Oct 20254411 AMAQI
2nd Oct 20254912 PMAQI
2nd Oct 2025531 PMAQI
2nd Oct 2025492 PMAQI
2nd Oct 2025443 PMAQI
2nd Oct 2025434 PMAQI
2nd Oct 2025465 PMAQI
2nd Oct 2025536 PMAQI
2nd Oct 2025517 PMAQI
2nd Oct 2025428 PMAQI
2nd Oct 2025449 PMAQI
2nd Oct 20254710 PMAQI
2nd Oct 20255111 PMAQI
3rd Oct 20255212 AMAQI
3rd Oct 2025391 AMAQI
3rd Oct 2025382 AMAQI
3rd Oct 2025393 AMAQI
3rd Oct 2025424 AMAQI
3rd Oct 2025415 AMAQI

24°C22/30°C

3rd Oct 2025406 AMAQI
3rd Oct 2025517 AMAQI
3rd Oct 2025548 AMAQI
3rd Oct 2025539 AMAQI
3rd Oct 20254710 AMAQI
3rd Oct 20254711 AMAQI
3rd Oct 20254612 PMAQI
3rd Oct 2025441 PMAQI
3rd Oct 2025462 PMAQI
3rd Oct 2025493 PMAQI
3rd Oct 2025494 PMAQI
3rd Oct 2025415 PMAQI
3rd Oct 2025396 PMAQI
3rd Oct 2025537 PMAQI
3rd Oct 2025548 PMAQI
3rd Oct 2025559 PMAQI
3rd Oct 20255310 PMAQI
3rd Oct 20255211 PMAQI
4th Oct 20254912 AMAQI
4th Oct 2025501 AMAQI
4th Oct 2025542 AMAQI
4th Oct 2025523 AMAQI
4th Oct 2025514 AMAQI
4th Oct 2025515 AMAQI

26°C21/31°C

4th Oct 2025496 AMAQI
4th Oct 2025477 AMAQI
4th Oct 2025478 AMAQI
4th Oct 2025529 AMAQI
4th Oct 20255610 AMAQI
4th Oct 20256111 AMAQI
4th Oct 20256112 PMAQI
4th Oct 2025591 PMAQI
4th Oct 2025512 PMAQI
4th Oct 2025503 PMAQI
4th Oct 2025514 PMAQI
4th Oct 2025525 PMAQI
4th Oct 2025516 PMAQI
4th Oct 2025537 PMAQI
4th Oct 2025548 PMAQI
4th Oct 2025569 PMAQI
4th Oct 20256110 PMAQI
4th Oct 20256011 PMAQI
5th Oct 20255912 AMAQI
5th Oct 2025611 AMAQI
5th Oct 2025622 AMAQI
5th Oct 2025593 AMAQI
5th Oct 2025604 AMAQI
5th Oct 2025605 AMAQI

24°C20/30°C

5th Oct 2025586 AMAQI
5th Oct 2025597 AMAQI
5th Oct 2025638 AMAQI
5th Oct 2025589 AMAQI
5th Oct 20255710 AMAQI
5th Oct 20256011 AMAQI
5th Oct 20255412 PMAQI
5th Oct 2025501 PMAQI
5th Oct 2025562 PMAQI
5th Oct 2025593 PMAQI
5th Oct 2025574 PMAQI
5th Oct 2025565 PMAQI
5th Oct 2025576 PMAQI
5th Oct 2025507 PMAQI
5th Oct 2025588 PMAQI
5th Oct 2025649 PMAQI
5th Oct 20256710 PMAQI
5th Oct 20256811 PMAQI
6th Oct 20256712 AMAQI
6th Oct 2025591 AMAQI
6th Oct 2025572 AMAQI
6th Oct 2025633 AMAQI
6th Oct 2025664 AMAQI
6th Oct 2025665 AMAQI

25°C21/31°C

6th Oct 2025646 AMAQI
6 AM
6th Oct 2025557 AMAQI
6th Oct 2025558 AMAQI
6th Oct 2025529 AMAQI
6th Oct 20255210 AMAQI
6th Oct 20255711 AMAQI
12 PM
6 PM
12 AM
5 AM

--°C/°C

Day time
Avg. Highest Time
6 AM

45AQI

1 hours / Day
30 hours / Month
Avg. Lowest Time
3 PM

33AQI

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. 45), while the lowest AQI was between 3 PM to 3 PM (Avg. 33).
Night time
Avg. Highest Time
12 AM - 2 AM

47AQI

3 hours / Day
90 hours / Month
Avg. Lowest Time
7 PM

43AQI

1 hours / Day
30 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 12 AM to 2 AM (Avg. 47), while the lowest AQI was between 7 PM to 7 PM (Avg. 43).

2025 Days Vs Air Quality

Mae Sai, Chiang Rai, Thailand

2025

37%

104

34%

95

24%

66

5%

13

Total number of days with different AQI categories in last 279 days in 2025 (86 days remaining)

Good
104 Days
Moderate
95 Days
Poor
66 Days
Unhealthy
13 Days
Severe
0 Days
Hazardous
0 Days

Under WHO’s Safe Air Quality Limits: 37%

Health Risk Level:

High

In 2025, 37% of 279 days were within WHO’s safe air quality limits. The risk of health issues is High, with respiratory problems, heart disease, skin issues, and stress being more common, particularly among children and the elderly.

Annual Air Quality Insights

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
90AQI
2nd January 2025
86AQI
3rd January 2025
79AQI
4th January 2025
84AQI
5th January 2025
94AQI
6th January 2025
111AQI
7th January 2025
113AQI
8th January 2025
112AQI
9th January 2025
119AQI
10th January 2025
112AQI
11th January 2025
105AQI
12th January 2025
93AQI
13th January 2025
91AQI
14th January 2025
97AQI
15th January 2025
107AQI
16th January 2025
99AQI
17th January 2025
94AQI
18th January 2025
97AQI
19th January 2025
99AQI
20th January 2025
109AQI
21st January 2025
121AQI
22nd January 2025
125AQI
23rd January 2025
124AQI
24th January 2025
111AQI
25th January 2025
103AQI
26th January 2025
101AQI
27th January 2025
79AQI
28th January 2025
82AQI
29th January 2025
97AQI
30th January 2025
114AQI
31st January 2025
105AQI
1st February 2025
102AQI
2nd February 2025
109AQI
3rd February 2025
109AQI
4th February 2025
117AQI
5th February 2025
116AQI
6th February 2025
114AQI
7th February 2025
108AQI
8th February 2025
108AQI
9th February 2025
91AQI
10th February 2025
106AQI
11th February 2025
111AQI
12th February 2025
111AQI
13th February 2025
106AQI
14th February 2025
106AQI
15th February 2025
102AQI
16th February 2025
126AQI
17th February 2025
125AQI
18th February 2025
126AQI
19th February 2025
118AQI
20th February 2025
116AQI
21st February 2025
110AQI
22nd February 2025
107AQI
23rd February 2025
100AQI
24th February 2025
80AQI
25th February 2025
70AQI
26th February 2025
61AQI
27th February 2025
67AQI
28th February 2025
72AQI
1st March 2025
75AQI
2nd March 2025
82AQI
3rd March 2025
96AQI
4th March 2025
114AQI
5th March 2025
132AQI
6th March 2025
129AQI
7th March 2025
140AQI
8th March 2025
120AQI
9th March 2025
112AQI
10th March 2025
102AQI
11th March 2025
112AQI
12th March 2025
120AQI
13th March 2025
107AQI
14th March 2025
115AQI
15th March 2025
133AQI
16th March 2025
130AQI
17th March 2025
144AQI
18th March 2025
131AQI
19th March 2025
86AQI
20th March 2025
91AQI
21st March 2025
103AQI
22nd March 2025
130AQI
23rd March 2025
140AQI
24th March 2025
151AQI
25th March 2025
156AQI
26th March 2025
157AQI
27th March 2025
158AQI
28th March 2025
164AQI
29th March 2025
164AQI
30th March 2025
165AQI
31st March 2025
159AQI
1st April 2025
153AQI
2nd April 2025
151AQI
3rd April 2025
151AQI
4th April 2025
153AQI
5th April 2025
153AQI
6th April 2025
146AQI
7th April 2025
122AQI
8th April 2025
120AQI
9th April 2025
138AQI
10th April 2025
139AQI
11th April 2025
142AQI
12th April 2025
113AQI
13th April 2025
81AQI
14th April 2025
65AQI
15th April 2025
60AQI
16th April 2025
57AQI
17th April 2025
58AQI
18th April 2025
57AQI
19th April 2025
61AQI
20th April 2025
64AQI
21st April 2025
69AQI
22nd April 2025
85AQI
23rd April 2025
90AQI
24th April 2025
103AQI
25th April 2025
111AQI
26th April 2025
114AQI
27th April 2025
110AQI
28th April 2025
81AQI
29th April 2025
74AQI
30th April 2025
66AQI
1st May 2025
61AQI
2nd May 2025
64AQI
3rd May 2025
61AQI
4th May 2025
63AQI
5th May 2025
66AQI
6th May 2025
72AQI
7th May 2025
83AQI
8th May 2025
86AQI
9th May 2025
76AQI
10th May 2025
88AQI
11th May 2025
87AQI
12th May 2025
59AQI
13th May 2025
64AQI
14th May 2025
64AQI
15th May 2025
51AQI
16th May 2025
51AQI
17th May 2025
51AQI
18th May 2025
46AQI
19th May 2025
47AQI
20th May 2025
52AQI
21st May 2025
56AQI
22nd May 2025
57AQI
23rd May 2025
61AQI
24th May 2025
50AQI
25th May 2025
47AQI
26th May 2025
44AQI
27th May 2025
50AQI
28th May 2025
45AQI
29th May 2025
49AQI
30th May 2025
46AQI
31st May 2025
46AQI
1st June 2025
49AQI
2nd June 2025
50AQI
3rd June 2025
54AQI
4th June 2025
60AQI
5th June 2025
67AQI
6th June 2025
71AQI
7th June 2025
69AQI
8th June 2025
67AQI
9th June 2025
68AQI
10th June 2025
54AQI
11th June 2025
49AQI
12th June 2025
52AQI
13th June 2025
54AQI
14th June 2025
54AQI
15th June 2025
48AQI
16th June 2025
45AQI
17th June 2025
45AQI
18th June 2025
42AQI
19th June 2025
43AQI
20th June 2025
46AQI
21st June 2025
49AQI
22nd June 2025
52AQI
23rd June 2025
46AQI
24th June 2025
47AQI
25th June 2025
47AQI
26th June 2025
48AQI
27th June 2025
44AQI
28th June 2025
45AQI
29th June 2025
45AQI
30th June 2025
47AQI
1st July 2025
49AQI
2nd July 2025
45AQI
3rd July 2025
50AQI
4th July 2025
46AQI
5th July 2025
45AQI
6th July 2025
40AQI
7th July 2025
39AQI
8th July 2025
42AQI
9th July 2025
49AQI
10th July 2025
49AQI
11th July 2025
47AQI
12th July 2025
43AQI
13th July 2025
44AQI
14th July 2025
44AQI
15th July 2025
43AQI
16th July 2025
45AQI
17th July 2025
47AQI
18th July 2025
44AQI
19th July 2025
46AQI
20th July 2025
44AQI
21st July 2025
48AQI
22nd July 2025
46AQI
23rd July 2025
42AQI
24th July 2025
37AQI
25th July 2025
38AQI
26th July 2025
40AQI
27th July 2025
39AQI
28th July 2025
38AQI
29th July 2025
43AQI
30th July 2025
43AQI
31st July 2025
51AQI
1st August 2025
57AQI
2nd August 2025
54AQI
3rd August 2025
54AQI
4th August 2025
56AQI
5th August 2025
53AQI
6th August 2025
47AQI
7th August 2025
41AQI
8th August 2025
33AQI
9th August 2025
30AQI
10th August 2025
31AQI
11th August 2025
40AQI
12th August 2025
48AQI
13th August 2025
49AQI
14th August 2025
52AQI
15th August 2025
49AQI
16th August 2025
47AQI
17th August 2025
47AQI
18th August 2025
51AQI
19th August 2025
49AQI
20th August 2025
51AQI
21st August 2025
52AQI
22nd August 2025
51AQI
23rd August 2025
48AQI
24th August 2025
47AQI
25th August 2025
52AQI
26th August 2025
49AQI
27th August 2025
47AQI
28th August 2025
47AQI
29th August 2025
48AQI
30th August 2025
49AQI
31st August 2025
49AQI
1st September 2025
51AQI
2nd September 2025
50AQI
3rd September 2025
53AQI
4th September 2025
52AQI
5th September 2025
50AQI
6th September 2025
51AQI
7th September 2025
54AQI
8th September 2025
55AQI
9th September 2025
51AQI
10th September 2025
47AQI
11th September 2025
45AQI
12th September 2025
50AQI
13th September 2025
49AQI
14th September 2025
46AQI
15th September 2025
50AQI
16th September 2025
46AQI
17th September 2025
50AQI
18th September 2025
50AQI
19th September 2025
38AQI
20th September 2025
35AQI
21st September 2025
32AQI
22nd September 2025
30AQI
23rd September 2025
28AQI
24th September 2025
26AQI
25th September 2025
32AQI
26th September 2025
25AQI
27th September 2025
19AQI
28th September 2025
19AQI
29th September 2025
39AQI
30th September 2025
43AQI
1st October 2025
40AQI
2nd October 2025
47AQI
3rd October 2025
48AQI
4th October 2025
53AQI
5th October 2025
59AQI
6th October 2025
7th October 2025
8th October 2025
9th October 2025
10th October 2025
11th October 2025
12th October 2025
13th October 2025
14th October 2025
15th October 2025
16th October 2025
17th October 2025
18th October 2025
19th October 2025
20th October 2025
21st October 2025
22nd October 2025
23rd October 2025
24th October 2025
25th October 2025
26th October 2025
27th October 2025
28th October 2025
29th October 2025
30th October 2025
31st October 2025
1st November 2025
2nd November 2025
3rd November 2025
4th November 2025
5th November 2025
6th November 2025
7th November 2025
8th November 2025
9th November 2025
10th November 2025
11th November 2025
12th November 2025
13th November 2025
14th November 2025
15th November 2025
16th November 2025
17th November 2025
18th November 2025
19th November 2025
20th November 2025
21st November 2025
22nd November 2025
23rd November 2025
24th November 2025
25th November 2025
26th November 2025
27th November 2025
28th November 2025
29th November 2025
30th November 2025
1st December 2025
2nd December 2025
3rd December 2025
4th December 2025
5th December 2025
6th December 2025
7th December 2025
8th December 2025
9th December 2025
10th December 2025
11th December 2025
12th December 2025
13th December 2025
14th December 2025
15th December 2025
16th December 2025
17th December 2025
18th December 2025
19th December 2025
20th December 2025
21st December 2025
22nd December 2025
23rd December 2025
24th December 2025
25th December 2025
26th December 2025
27th December 2025
28th December 2025
29th December 2025
30th December 2025
31st December 2025

102AQI

103AQI

126AQI

103AQI

59AQI

52AQI

44AQI

48AQI

42AQI

49AQI

No. of days

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

202575AQI

15
16
7
21
5
18
8
14
11
5
10
21
18
12
30
1
20
11
23
7
3
2
104
95
66
13

Highest AQI recorded in

March

126AQI

Lowest AQI recorded in

September

42AQI

202484AQI

19
12
3
25
1
6
16
9
16
8
6
8
12
6
5
30
31
31
19
11
11
20
7
23
31
137
119
65
30
15

Highest AQI recorded in

March

178AQI

Lowest AQI recorded in

July

34AQI

202399AQI

9
22
2
8
18
7
14
7
3
9
5
8
8
2
16
13
13
17
22
9
21
10
19
11
15
16
1
25
3
21
10
93
136
72
37
15
11

Highest AQI recorded in

April

224AQI

Lowest AQI recorded in

July

43AQI

202276AQI

4
24
3
1
12
8
3
26
2
2
7
15
6
10
20
1
29
1
26
3
1
19
9
1
12
17
2
1
29
12
19
107
135
75
8

Highest AQI recorded in

March

126AQI

Lowest AQI recorded in

July

28AQI

202173AQI

1
17
13
4
10
14
9
20
2
2
15
7
5
1
8
15
8
10
10
10
27
4
29
2
28
2
18
13
15
15
7
16
8
149
119
69
25
2
1

Highest AQI recorded in

March

163AQI

Lowest AQI recorded in

August

32AQI

202067AQI

2
7
4
1
5
6
9
5
9
5
27
3
29
2
31
23
6
1
27
4
9
21
3
26
2
154
72
13
8
16
4

Highest AQI recorded in

March

279AQI

Lowest AQI recorded in

August

26AQI

Most & Least Polluted Years Over the Last 6 Years

Most Polluted Year Recorded
2023(Avg.)
99AQI
Least Polluted Year Recorded
2020(Avg.)
67AQI

Mae Sai's annual 2025 AQI (75) shows an average percentage change of -4.2% (improved AQI) compared to previous years: 2020 (67), 2021 (73), 2022 (76), 2023 (99), 2024 (84).