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HistoryAQIPM₂.₅PM₁₀COSO₂NO₂O₃

Sam Phrao, Udon Thani, 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+

August Air Quality Analysis

Sam Phrao, Udon Thani, Thailand

2024
2025
2026
AQI
.
Days

AQI Trends: Highest and Lowest

Highest AQI recorded on
11th Aug 2024
58AQI
Lowest AQI recorded on
1st Aug 2026
30AQI

Same Day Analysis (1st August):
On this day, AQI across the 3 years varied significantly: 2026 ranks 3rd highest AQI at 30 of Good air quality, showing improvement over 2025 and 2024 on the same day.

Day & Night AQI Trend: 31st Jul - 1st Aug 2026

Sam Phrao, Udon Thani, Thailand

AQI
Day
Night
.

5 AM31st Jul 2026

6 PM

4 AM1st Aug 2026

Day time
Avg. Highest Time
4PM31st Jul

38AQI

Avg. Lowest Time
11AM31st Jul

19AQI

Night time
Avg. Highest Time
7PM31st Jul

34AQI

Avg. Lowest Time
8PM31st Jul

14AQI

In the last 24 hours,

Sam Phrao's AQI reached its highest point of 38 at 4 PM during the Day, while the lowest point, 14, was recorded at 8 PM during the Night between 31st Jul and 1st Aug 2026.

Day & Night AQI Trend : Jul - Aug 2026

Sam Phrao, Udon Thani, Thailand

JulAug
03rd - 04th04th - 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
Day
Night
3rd Jul 2026175 AMAQI
3rd Jul 2026386 AMAQI
3rd Jul 2026567 AMAQI
3rd Jul 2026508 AMAQI
3rd Jul 2026369 AMAQI
3rd Jul 20261610 AMAQI
3rd Jul 20261711 AMAQI
3rd Jul 20261412 PMAQI
3rd Jul 2026121 PMAQI
3rd Jul 2026122 PMAQI
3rd Jul 202683 PMAQI
3rd Jul 202684 PMAQI
3rd Jul 2026185 PMAQI
3rd Jul 2026366 PMAQI
3rd Jul 2026337 PMAQI
3rd Jul 2026468 PMAQI
3rd Jul 2026519 PMAQI
3rd Jul 20264010 PMAQI
3rd Jul 20263811 PMAQI
4th Jul 20263612 AMAQI
4th Jul 2026291 AMAQI
4th Jul 2026282 AMAQI
4th Jul 2026283 AMAQI
4th Jul 2026254 AMAQI

28°C25/32°C

4th Jul 2026275 AMAQI
4th Jul 2026306 AMAQI
4th Jul 2026407 AMAQI
4th Jul 2026318 AMAQI
4th Jul 2026429 AMAQI
4th Jul 20263010 AMAQI
4th Jul 20262711 AMAQI
4th Jul 20262512 PMAQI
4th Jul 2026201 PMAQI
4th Jul 2026172 PMAQI
4th Jul 2026253 PMAQI
4th Jul 2026264 PMAQI
4th Jul 2026245 PMAQI
4th Jul 2026266 PMAQI
4th Jul 2026267 PMAQI
4th Jul 2026248 PMAQI
4th Jul 2026239 PMAQI
4th Jul 20262610 PMAQI
4th Jul 20263111 PMAQI
5th Jul 20266012 AMAQI
5th Jul 2026361 AMAQI
5th Jul 2026272 AMAQI
5th Jul 2026273 AMAQI
5th Jul 2026244 AMAQI

27°C25/30°C

5th Jul 2026215 AMAQI
5th Jul 2026276 AMAQI
5th Jul 2026317 AMAQI
5th Jul 2026298 AMAQI
5th Jul 2026279 AMAQI
5th Jul 20262610 AMAQI
5th Jul 20263311 AMAQI
5th Jul 20263812 PMAQI
5th Jul 2026361 PMAQI
5th Jul 2026312 PMAQI
5th Jul 2026333 PMAQI
5th Jul 2026284 PMAQI
5th Jul 2026235 PMAQI
5th Jul 2026206 PMAQI
5th Jul 2026227 PMAQI
5th Jul 2026228 PMAQI
5th Jul 2026259 PMAQI
5th Jul 20262610 PMAQI
5th Jul 20262211 PMAQI
6th Jul 20262512 AMAQI
6th Jul 2026241 AMAQI
6th Jul 2026222 AMAQI
6th Jul 2026263 AMAQI
6th Jul 2026254 AMAQI

24°C23/25°C

6th Jul 2026245 AMAQI
6th Jul 2026266 AMAQI
6th Jul 2026187 AMAQI
6th Jul 2026358 AMAQI
6th Jul 2026369 AMAQI
6th Jul 20261910 AMAQI
6th Jul 20261711 AMAQI
6th Jul 20261712 PMAQI
6th Jul 2026171 PMAQI
6th Jul 2026172 PMAQI
6th Jul 2026143 PMAQI
6th Jul 2026184 PMAQI
6th Jul 2026135 PMAQI
6th Jul 2026266 PMAQI
6th Jul 2026257 PMAQI
6th Jul 2026288 PMAQI
6th Jul 2026269 PMAQI
6th Jul 20264210 PMAQI
6th Jul 20262211 PMAQI
7th Jul 20262812 AMAQI
7th Jul 2026261 AMAQI
7th Jul 2026302 AMAQI
7th Jul 2026303 AMAQI
7th Jul 2026224 AMAQI

24°C23/28°C

7th Jul 2026185 AMAQI
7th Jul 2026286 AMAQI
7th Jul 2026227 AMAQI
7th Jul 2026248 AMAQI
7th Jul 2026239 AMAQI
7th Jul 20262210 AMAQI
7th Jul 20262211 AMAQI
7th Jul 20262312 PMAQI
7th Jul 2026261 PMAQI
7th Jul 2026242 PMAQI
7th Jul 2026263 PMAQI
7th Jul 2026384 PMAQI
7th Jul 2026485 PMAQI
7th Jul 2026266 PMAQI
7th Jul 2026287 PMAQI
7th Jul 2026178 PMAQI
7th Jul 2026229 PMAQI
7th Jul 20263010 PMAQI
7th Jul 20263011 PMAQI
8th Jul 20262712 AMAQI
8th Jul 2026281 AMAQI
8th Jul 2026242 AMAQI
8th Jul 2026283 AMAQI
8th Jul 2026284 AMAQI

25°C24/29°C

8th Jul 2026265 AMAQI
8th Jul 2026266 AMAQI
8th Jul 2026257 AMAQI
8th Jul 2026238 AMAQI
8th Jul 2026369 AMAQI
8th Jul 20263310 AMAQI
8th Jul 20263111 AMAQI
8th Jul 20262712 PMAQI
8th Jul 2026251 PMAQI
8th Jul 2026262 PMAQI
8th Jul 2026363 PMAQI
8th Jul 2026464 PMAQI
8th Jul 2026185 PMAQI
8th Jul 2026226 PMAQI
8th Jul 2026227 PMAQI
8th Jul 2026288 PMAQI
8th Jul 2026339 PMAQI
8th Jul 20263310 PMAQI
8th Jul 20263011 PMAQI
9th Jul 20262812 AMAQI
9th Jul 2026261 AMAQI
9th Jul 2026272 AMAQI
9th Jul 2026283 AMAQI
9th Jul 2026314 AMAQI

25°C24/29°C

9th Jul 2026285 AMAQI
9th Jul 2026256 AMAQI
9th Jul 2026257 AMAQI
9th Jul 2026248 AMAQI
9th Jul 2026229 AMAQI
9th Jul 20262510 AMAQI
9th Jul 20262711 AMAQI
9th Jul 20262412 PMAQI
9th Jul 2026241 PMAQI
9th Jul 2026312 PMAQI
9th Jul 2026293 PMAQI
9th Jul 2026294 PMAQI
9th Jul 2026215 PMAQI
9th Jul 2026346 PMAQI
9th Jul 2026487 PMAQI
9th Jul 2026538 PMAQI
9th Jul 2026629 PMAQI
9th Jul 20265210 PMAQI
9th Jul 20263611 PMAQI
10th Jul 20265512 AMAQI
10th Jul 2026491 AMAQI
10th Jul 2026242 AMAQI
10th Jul 2026383 AMAQI
10th Jul 2026424 AMAQI

26°C23/31°C

10th Jul 2026405 AMAQI
10th Jul 2026426 AMAQI
10th Jul 2026537 AMAQI
10th Jul 2026548 AMAQI
10th Jul 2026369 AMAQI
10th Jul 20263810 AMAQI
10th Jul 20263311 AMAQI
10th Jul 20263812 PMAQI
10th Jul 2026221 PMAQI
10th Jul 2026222 PMAQI
10th Jul 2026283 PMAQI
10th Jul 2026284 PMAQI
10th Jul 2026305 PMAQI
10th Jul 2026306 PMAQI
10th Jul 2026327 PMAQI
10th Jul 2026248 PMAQI
10th Jul 2026329 PMAQI
10th Jul 20263010 PMAQI
10th Jul 20263611 PMAQI
11th Jul 20263112 AMAQI
11th Jul 2026321 AMAQI
11th Jul 2026442 AMAQI
11th Jul 2026323 AMAQI
11th Jul 2026304 AMAQI

25°C23/29°C

11th Jul 2026425 AMAQI
11th Jul 2026446 AMAQI
11th Jul 2026367 AMAQI
11th Jul 2026368 AMAQI
11th Jul 2026429 AMAQI
11th Jul 20263410 AMAQI
11th Jul 20264211 AMAQI
11th Jul 20263812 PMAQI
11th Jul 2026311 PMAQI
11th Jul 2026312 PMAQI
11th Jul 2026313 PMAQI
11th Jul 2026364 PMAQI
11th Jul 2026295 PMAQI
11th Jul 2026446 PMAQI
11th Jul 2026547 PMAQI
11th Jul 2026448 PMAQI
11th Jul 2026519 PMAQI
11th Jul 20265410 PMAQI
11th Jul 20265911 PMAQI
12th Jul 20266212 AMAQI
12th Jul 2026581 AMAQI
12th Jul 2026552 AMAQI
12th Jul 2026583 AMAQI
12th Jul 2026604 AMAQI

25°C23/28°C

12th Jul 2026605 AMAQI
12th Jul 2026606 AMAQI
12th Jul 2026647 AMAQI
12th Jul 2026598 AMAQI
12th Jul 2026579 AMAQI
12th Jul 20263610 AMAQI
12th Jul 20262711 AMAQI
12th Jul 20262412 PMAQI
12th Jul 2026211 PMAQI
12th Jul 2026252 PMAQI
12th Jul 2026263 PMAQI
12th Jul 2026244 PMAQI
12th Jul 2026285 PMAQI
12th Jul 2026236 PMAQI
12th Jul 2026237 PMAQI
12th Jul 2026198 PMAQI
12th Jul 2026289 PMAQI
12th Jul 20262810 PMAQI
12th Jul 20263811 PMAQI
13th Jul 20262912 AMAQI
13th Jul 2026251 AMAQI
13th Jul 2026342 AMAQI
13th Jul 2026463 AMAQI
13th Jul 2026314 AMAQI

26°C23/32°C

13th Jul 2026385 AMAQI
13th Jul 2026266 AMAQI
13th Jul 2026277 AMAQI
13th Jul 2026248 AMAQI
13th Jul 2026249 AMAQI
13th Jul 20262510 AMAQI
13th Jul 20262211 AMAQI
13th Jul 20262012 PMAQI
13th Jul 2026241 PMAQI
13th Jul 2026242 PMAQI
13th Jul 2026323 PMAQI
13th Jul 2026294 PMAQI
13th Jul 2026305 PMAQI
13th Jul 2026326 PMAQI
13th Jul 2026347 PMAQI
13th Jul 2026428 PMAQI
13th Jul 2026529 PMAQI
13th Jul 20263310 PMAQI
13th Jul 20263611 PMAQI
14th Jul 20263212 AMAQI
14th Jul 2026331 AMAQI
14th Jul 2026402 AMAQI
14th Jul 2026383 AMAQI
14th Jul 2026554 AMAQI

26°C25/30°C

14th Jul 2026685 AMAQI
14th Jul 2026586 AMAQI
14th Jul 2026577 AMAQI
14th Jul 2026578 AMAQI
14th Jul 2026679 AMAQI
14th Jul 20264610 AMAQI
14th Jul 20263811 AMAQI
14th Jul 20263612 PMAQI
14th Jul 2026401 PMAQI
14th Jul 2026312 PMAQI
14th Jul 2026273 PMAQI
14th Jul 2026304 PMAQI
14th Jul 2026295 PMAQI
14th Jul 2026286 PMAQI
14th Jul 2026447 PMAQI
14th Jul 2026498 PMAQI
14th Jul 2026369 PMAQI
14th Jul 20264810 PMAQI
14th Jul 20265311 PMAQI
15th Jul 20265212 AMAQI
15th Jul 2026451 AMAQI
15th Jul 2026172 AMAQI
15th Jul 2026263 AMAQI
15th Jul 2026174 AMAQI

27°C24/32°C

15th Jul 2026185 AMAQI
15th Jul 2026246 AMAQI
15th Jul 2026127 AMAQI
15th Jul 2026198 AMAQI
15th Jul 2026299 AMAQI
15th Jul 20262210 AMAQI
15th Jul 20262111 AMAQI
15th Jul 20262612 PMAQI
15th Jul 2026251 PMAQI
15th Jul 2026262 PMAQI
15th Jul 2026243 PMAQI
15th Jul 2026294 PMAQI
15th Jul 2026335 PMAQI
15th Jul 2026406 PMAQI
15th Jul 2026487 PMAQI
15th Jul 2026658 PMAQI
15th Jul 2026259 PMAQI
15th Jul 20266610 PMAQI
15th Jul 20265611 PMAQI
16th Jul 20265812 AMAQI
16th Jul 2026551 AMAQI
16th Jul 2026422 AMAQI
16th Jul 2026383 AMAQI
16th Jul 2026464 AMAQI

26°C24/28°C

16th Jul 2026335 AMAQI
16th Jul 2026346 AMAQI
16th Jul 2026557 AMAQI
16th Jul 2026558 AMAQI
16th Jul 2026559 AMAQI
16th Jul 20263610 AMAQI
16th Jul 20263611 AMAQI
16th Jul 20263812 PMAQI
16th Jul 2026461 PMAQI
16th Jul 2026422 PMAQI
16th Jul 2026513 PMAQI
16th Jul 2026534 PMAQI
16th Jul 2026465 PMAQI
16th Jul 2026256 PMAQI
16th Jul 2026327 PMAQI
16th Jul 2026388 PMAQI
16th Jul 2026369 PMAQI
16th Jul 20264410 PMAQI
16th Jul 20265111 PMAQI
17th Jul 20264612 AMAQI
17th Jul 2026401 AMAQI
17th Jul 2026332 AMAQI
17th Jul 2026453 AMAQI
17th Jul 2026664 AMAQI

26°C24/29°C

17th Jul 2026585 AMAQI
17th Jul 2026686 AMAQI
17th Jul 2026817 AMAQI
17th Jul 2026748 AMAQI
17th Jul 2026369 AMAQI
17th Jul 20264610 AMAQI
17th Jul 20265011 AMAQI
17th Jul 20263812 PMAQI
17th Jul 2026381 PMAQI
17th Jul 2026312 PMAQI
17th Jul 2026323 PMAQI
17th Jul 2026384 PMAQI
17th Jul 2026315 PMAQI
17th Jul 2026236 PMAQI
17th Jul 2026257 PMAQI
17th Jul 2026448 PMAQI
17th Jul 2026609 PMAQI
17th Jul 20265710 PMAQI
17th Jul 20265411 PMAQI
18th Jul 20264412 AMAQI
18th Jul 2026361 AMAQI
18th Jul 2026272 AMAQI
18th Jul 2026403 AMAQI
18th Jul 2026524 AMAQI

25°C24/27°C

18th Jul 2026555 AMAQI
18th Jul 2026536 AMAQI
18th Jul 2026537 AMAQI
18th Jul 2026628 AMAQI
18th Jul 2026539 AMAQI
18th Jul 20262910 AMAQI
18th Jul 20265111 AMAQI
18th Jul 20267112 PMAQI
18th Jul 2026651 PMAQI
18th Jul 2026662 PMAQI
18th Jul 2026583 PMAQI
18th Jul 2026554 PMAQI
18th Jul 2026445 PMAQI
18th Jul 2026446 PMAQI
18th Jul 2026627 PMAQI
18th Jul 2026728 PMAQI
18th Jul 2026859 PMAQI
18th Jul 20269010 PMAQI
18th Jul 20269811 PMAQI
19th Jul 20267812 AMAQI
19th Jul 2026761 AMAQI
19th Jul 2026522 AMAQI
19th Jul 2026533 AMAQI
19th Jul 2026564 AMAQI

28°C23/34°C

19th Jul 2026755 AMAQI
19th Jul 2026736 AMAQI
19th Jul 2026747 AMAQI
19th Jul 2026708 AMAQI
19th Jul 2026679 AMAQI
19th Jul 20266210 AMAQI
19th Jul 20265011 AMAQI
19th Jul 20263112 PMAQI
19th Jul 2026341 PMAQI
19th Jul 2026472 PMAQI
19th Jul 2026553 PMAQI
19th Jul 2026584 PMAQI
19th Jul 2026575 PMAQI
19th Jul 2026556 PMAQI
19th Jul 2026407 PMAQI
19th Jul 2026628 PMAQI
19th Jul 2026569 PMAQI
19th Jul 20264410 PMAQI
19th Jul 20264411 PMAQI
20th Jul 20265612 AMAQI
20th Jul 2026641 AMAQI
20th Jul 2026742 AMAQI
20th Jul 2026583 AMAQI
20th Jul 2026604 AMAQI

28°C24/33°C

20th Jul 2026575 AMAQI
20th Jul 2026686 AMAQI
20th Jul 2026827 AMAQI
20th Jul 2026848 AMAQI
20th Jul 2026709 AMAQI
20th Jul 20265410 AMAQI
20th Jul 20265211 AMAQI
20th Jul 20265212 PMAQI
20th Jul 2026541 PMAQI
20th Jul 2026522 PMAQI
20th Jul 2026543 PMAQI
20th Jul 2026444 PMAQI
20th Jul 2026405 PMAQI
20th Jul 2026406 PMAQI
20th Jul 2026407 PMAQI
20th Jul 2026498 PMAQI
20th Jul 2026539 PMAQI
20th Jul 20265510 PMAQI
20th Jul 20263811 PMAQI
21st Jul 20264412 AMAQI
21st Jul 2026481 AMAQI
21st Jul 2026292 AMAQI
21st Jul 2026313 AMAQI
21st Jul 2026314 AMAQI

27°C24/32°C

21st Jul 2026295 AMAQI
21st Jul 2026516 AMAQI
21st Jul 2026517 AMAQI
21st Jul 2026668 AMAQI
21st Jul 2026669 AMAQI
21st Jul 20264011 AMAQI
21st Jul 20263812 PMAQI
21st Jul 2026291 PMAQI
21st Jul 2026252 PMAQI
21st Jul 2026293 PMAQI
21st Jul 2026334 PMAQI
21st Jul 2026805 PMAQI
21st Jul 2026276 PMAQI
21st Jul 2026257 PMAQI
21st Jul 2026298 PMAQI
21st Jul 2026339 PMAQI
21st Jul 20263110 PMAQI
21st Jul 20262911 PMAQI
22nd Jul 20262912 AMAQI
22nd Jul 2026291 AMAQI
22nd Jul 2026362 AMAQI
22nd Jul 2026213 AMAQI
22nd Jul 2026314 AMAQI

27°C24/32°C

22nd Jul 2026275 AMAQI
22nd Jul 2026276 AMAQI
22nd Jul 2026447 AMAQI
22nd Jul 2026428 AMAQI
22nd Jul 2026429 AMAQI
22nd Jul 20263610 AMAQI
22nd Jul 20262911 AMAQI
22nd Jul 20262112 PMAQI
22nd Jul 2026271 PMAQI
22nd Jul 2026252 PMAQI
22nd Jul 2026323 PMAQI
22nd Jul 2026214 PMAQI
22nd Jul 2026255 PMAQI
22nd Jul 2026276 PMAQI
22nd Jul 2026317 PMAQI
22nd Jul 2026318 PMAQI
22nd Jul 2026449 PMAQI
22nd Jul 20263810 PMAQI
22nd Jul 20263811 PMAQI
23rd Jul 20263312 AMAQI
23rd Jul 2026311 AMAQI
23rd Jul 2026252 AMAQI
23rd Jul 2026253 AMAQI
23rd Jul 2026254 AMAQI

26°C24/31°C

23rd Jul 2026235 AMAQI
23rd Jul 2026296 AMAQI
23rd Jul 2026217 AMAQI
23rd Jul 2026218 AMAQI
23rd Jul 2026279 AMAQI
23rd Jul 20265110 AMAQI
23rd Jul 20264611 AMAQI
23rd Jul 20261712 PMAQI
23rd Jul 2026191 PMAQI
23rd Jul 2026192 PMAQI
23rd Jul 2026193 PMAQI
23rd Jul 2026194 PMAQI
23rd Jul 2026335 PMAQI
23rd Jul 2026146 PMAQI
23rd Jul 2026147 PMAQI
23rd Jul 2026338 PMAQI
23rd Jul 2026389 PMAQI
23rd Jul 20263210 PMAQI
23rd Jul 20264211 PMAQI
24th Jul 20262112 AMAQI
24th Jul 2026271 AMAQI
24th Jul 2026252 AMAQI
24th Jul 2026253 AMAQI
24th Jul 2026164 AMAQI

27°C23/32°C

24th Jul 2026195 AMAQI
24th Jul 2026196 AMAQI
24th Jul 2026147 AMAQI
24th Jul 2026218 AMAQI
24th Jul 2026239 AMAQI
24th Jul 20262510 AMAQI
24th Jul 20262511 AMAQI
24th Jul 20266412 PMAQI
24th Jul 2026491 PMAQI
24th Jul 2026292 PMAQI
24th Jul 2026383 PMAQI
24th Jul 2026254 PMAQI
24th Jul 2026335 PMAQI
24th Jul 2026486 PMAQI
24th Jul 2026257 PMAQI
24th Jul 2026218 PMAQI
24th Jul 2026259 PMAQI
24th Jul 20262410 PMAQI
24th Jul 20262111 PMAQI
25th Jul 20262912 AMAQI
25th Jul 2026251 AMAQI
25th Jul 2026422 AMAQI
25th Jul 2026313 AMAQI
25th Jul 2026314 AMAQI

28°C24/33°C

25th Jul 2026215 AMAQI
25th Jul 2026466 AMAQI
25th Jul 2026467 AMAQI
25th Jul 2026318 AMAQI
25th Jul 2026339 AMAQI
25th Jul 20263310 AMAQI
25th Jul 20262511 AMAQI
25th Jul 20262112 PMAQI
25th Jul 2026291 PMAQI
25th Jul 2026212 PMAQI
25th Jul 2026233 PMAQI
25th Jul 2026254 PMAQI
25th Jul 2026215 PMAQI
25th Jul 2026256 PMAQI
25th Jul 2026217 PMAQI
25th Jul 2026178 PMAQI
25th Jul 2026259 PMAQI
25th Jul 20262910 PMAQI
25th Jul 20264811 PMAQI
26th Jul 20263112 AMAQI
26th Jul 2026311 AMAQI
26th Jul 2026422 AMAQI
26th Jul 2026333 AMAQI
26th Jul 2026604 AMAQI

27°C24/32°C

26th Jul 2026595 AMAQI
26th Jul 2026666 AMAQI
26th Jul 2026467 AMAQI
26th Jul 2026818 AMAQI
26th Jul 2026649 AMAQI
26th Jul 20267210 AMAQI
26th Jul 20262111 AMAQI
26th Jul 20262112 PMAQI
26th Jul 2026551 PMAQI
26th Jul 2026192 PMAQI
26th Jul 2026123 PMAQI
26th Jul 2026124 PMAQI
26th Jul 2026235 PMAQI
26th Jul 2026446 PMAQI
26th Jul 2026277 PMAQI
26th Jul 2026558 PMAQI
26th Jul 2026789 PMAQI
26th Jul 20261410 PMAQI
26th Jul 20261211 PMAQI
27th Jul 20261212 AMAQI
27th Jul 2026251 AMAQI
27th Jul 2026542 AMAQI
27th Jul 2026823 AMAQI
27th Jul 2026684 AMAQI

27°C25/31°C

27th Jul 2026145 AMAQI
27th Jul 2026176 AMAQI
27th Jul 2026197 AMAQI
27th Jul 2026218 AMAQI
27th Jul 2026239 AMAQI
27th Jul 20264210 AMAQI
27th Jul 20262311 AMAQI
27th Jul 20261712 PMAQI
27th Jul 2026141 PMAQI
27th Jul 2026192 PMAQI
27th Jul 2026143 PMAQI
27th Jul 2026234 PMAQI
27th Jul 2026215 PMAQI
27th Jul 2026296 PMAQI
27th Jul 2026277 PMAQI
27th Jul 2026408 PMAQI
27th Jul 2026649 PMAQI
27th Jul 20264410 PMAQI
27th Jul 20264011 PMAQI
28th Jul 20263112 AMAQI
28th Jul 2026321 AMAQI
28th Jul 2026212 AMAQI
28th Jul 2026383 AMAQI
28th Jul 2026304 AMAQI

27°C24/30°C

28th Jul 2026275 AMAQI
28th Jul 2026296 AMAQI
28th Jul 2026237 AMAQI
28th Jul 2026298 AMAQI
28th Jul 2026319 AMAQI
28th Jul 20263810 AMAQI
28th Jul 20262911 AMAQI
28th Jul 20263812 PMAQI
28th Jul 2026231 PMAQI
28th Jul 2026272 PMAQI
28th Jul 2026193 PMAQI
28th Jul 2026214 PMAQI
28th Jul 2026215 PMAQI
28th Jul 2026336 PMAQI
28th Jul 2026487 PMAQI
28th Jul 2026688 PMAQI
28th Jul 2026319 PMAQI
28th Jul 20262510 PMAQI
28th Jul 20262511 PMAQI
29th Jul 20263612 AMAQI
29th Jul 2026401 AMAQI
29th Jul 2026652 AMAQI
29th Jul 2026343 AMAQI
29th Jul 2026724 AMAQI

26°C25/29°C

29th Jul 2026255 AMAQI
29th Jul 2026486 AMAQI
29th Jul 2026407 AMAQI
29th Jul 2026258 AMAQI
29th Jul 2026319 AMAQI
29th Jul 20263010 AMAQI
29th Jul 20263311 AMAQI
29th Jul 20262912 PMAQI
29th Jul 2026341 PMAQI
29th Jul 2026232 PMAQI
29th Jul 2026163 PMAQI
29th Jul 2026194 PMAQI
29th Jul 2026125 PMAQI
29th Jul 2026196 PMAQI
29th Jul 2026147 PMAQI
29th Jul 2026128 PMAQI
29th Jul 2026199 PMAQI
29th Jul 20262510 PMAQI
29th Jul 20264411 PMAQI
30th Jul 20265812 AMAQI
30th Jul 2026621 AMAQI
30th Jul 2026592 AMAQI
30th Jul 2026513 AMAQI
30th Jul 2026664 AMAQI

25°C24/26°C

30th Jul 2026645 AMAQI
30th Jul 2026236 AMAQI
30th Jul 2026237 AMAQI
30th Jul 2026258 AMAQI
30th Jul 2026479 AMAQI
30th Jul 20263110 AMAQI
30th Jul 20263811 AMAQI
30th Jul 20262912 PMAQI
30th Jul 2026271 PMAQI
30th Jul 2026382 PMAQI
30th Jul 2026253 PMAQI
30th Jul 2026274 PMAQI
30th Jul 2026215 PMAQI
30th Jul 2026256 PMAQI
30th Jul 2026257 PMAQI
30th Jul 2026238 PMAQI
30th Jul 2026429 PMAQI
30th Jul 20264010 PMAQI
30th Jul 20263611 PMAQI
31st Jul 20262712 AMAQI
31st Jul 2026271 AMAQI
31st Jul 2026252 AMAQI
31st Jul 2026273 AMAQI
31st Jul 2026144 AMAQI

26°C23/31°C

31st Jul 2026195 AMAQI
31st Jul 2026276 AMAQI
31st Jul 2026237 AMAQI
31st Jul 2026258 AMAQI
31st Jul 2026259 AMAQI
31st Jul 20263310 AMAQI
31st Jul 20261911 AMAQI
31st Jul 20262512 PMAQI
31st Jul 2026251 PMAQI
31st Jul 2026212 PMAQI
31st Jul 2026213 PMAQI
31st Jul 2026384 PMAQI
31st Jul 2026275 PMAQI
31st Jul 2026296 PMAQI
31st Jul 2026347 PMAQI
31st Jul 2026148 PMAQI
31st Jul 2026279 PMAQI
31st Jul 20263310 PMAQI
31st Jul 20262111 PMAQI
1st Aug 20261912 AMAQI
1st Aug 2026251 AMAQI
1st Aug 2026292 AMAQI
1st Aug 2026213 AMAQI
1st Aug 2026224 AMAQI

26°C24/31°C

1st Aug 2026265 AMAQI
5 AM
1st Aug 2026486 AMAQI
1st Aug 2026297 AMAQI
1st Aug 2026218 AMAQI
1st Aug 2026259 AMAQI
1st Aug 20262710 AMAQI
1st Aug 20262311 AMAQI
11 AM
1st Aug 20262112 PMAQI
1st Aug 2026211 PMAQI
1st Aug 2026192 PMAQI
1st Aug 2026173 PMAQI
1st Aug 2026234 PMAQI
1st Aug 2026575 PMAQI
1st Aug 2026646 PMAQI
6 PM
1st Aug 2026857 PMAQI
1st Aug 2026408 PMAQI
1st Aug 2026219 PMAQI
1st Aug 20261210 PMAQI
1st Aug 20261411 PMAQI
11 PM
4 AM

25°C24/29°C

Day time
Avg. Highest Time
6 AM - 9 AM

40AQI

4 hours / Day
120 hours / Month
Avg. Lowest Time
2 PM - 3 PM

28AQI

2 hours / Day
60 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 6 AM to 9 AM (Avg. 40), while the lowest AQI was between 2 PM to 3 PM (Avg. 28).
Night time
Avg. Highest Time
9 PM

40AQI

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

34AQI

1 hours / Day
30 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 9 PM to 9 PM (Avg. 40), while the lowest AQI was between 7 PM to 7 PM (Avg. 34).

2026 Days Vs Air Quality

Sam Phrao, Udon Thani, Thailand

2026

41%

87

41%

87

16%

35

2%

4

Total number of days with different AQI categories in last 213 days in 2026 (152 days remaining)

Good
87 Days
Moderate
87 Days
Poor
35 Days
Unhealthy
4 Days
Severe
0 Days
Hazardous
0 Days

Under WHO’s Safe Air Quality Limits: 41%

Health Risk Level:

Significant

In 2026, 41% of 213 days were within WHO’s safe air quality limits, and 59% exceeded them. The risk of health issues is Significant, especially for those with existing respiratory or heart conditions.

Annual Air Quality Insights

Sam Phrao, Udon Thani, Thailand

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
89AQI (US)
2nd January 2026
68AQI (US)
3rd January 2026
49AQI (US)
4th January 2026
48AQI (US)
5th January 2026
74AQI (US)
6th January 2026
53AQI (US)
7th January 2026
43AQI (US)
8th January 2026
74AQI (US)
9th January 2026
89AQI (US)
10th January 2026
98AQI (US)
11th January 2026
93AQI (US)
12th January 2026
104AQI (US)
13th January 2026
118AQI (US)
14th January 2026
116AQI (US)
15th January 2026
117AQI (US)
16th January 2026
117AQI (US)
17th January 2026
103AQI (US)
18th January 2026
102AQI (US)
19th January 2026
101AQI (US)
20th January 2026
93AQI (US)
21st January 2026
74AQI (US)
22nd January 2026
56AQI (US)
23rd January 2026
34AQI (US)
24th January 2026
58AQI (US)
25th January 2026
73AQI (US)
26th January 2026
77AQI (US)
27th January 2026
68AQI (US)
28th January 2026
68AQI (US)
29th January 2026
85AQI (US)
30th January 2026
97AQI (US)
31st January 2026
84AQI (US)
1st February 2026
63AQI (US)
2nd February 2026
56AQI (US)
3rd February 2026
47AQI (US)
4th February 2026
72AQI (US)
5th February 2026
85AQI (US)
6th February 2026
81AQI (US)
7th February 2026
80AQI (US)
8th February 2026
61AQI (US)
9th February 2026
25AQI (US)
10th February 2026
54AQI (US)
11th February 2026
74AQI (US)
12th February 2026
70AQI (US)
13th February 2026
82AQI (US)
14th February 2026
83AQI (US)
15th February 2026
85AQI (US)
16th February 2026
94AQI (US)
17th February 2026
68AQI (US)
18th February 2026
44AQI (US)
19th February 2026
27AQI (US)
20th February 2026
37AQI (US)
21st February 2026
82AQI (US)
22nd February 2026
119AQI (US)
23rd February 2026
120AQI (US)
24th February 2026
96AQI (US)
25th February 2026
62AQI (US)
26th February 2026
69AQI (US)
27th February 2026
71AQI (US)
28th February 2026
74AQI (US)
1st March 2026
77AQI (US)
2nd March 2026
89AQI (US)
3rd March 2026
92AQI (US)
4th March 2026
75AQI (US)
5th March 2026
49AQI (US)
6th March 2026
45AQI (US)
7th March 2026
48AQI (US)
8th March 2026
54AQI (US)
9th March 2026
67AQI (US)
10th March 2026
36AQI (US)
11th March 2026
76AQI (US)
12th March 2026
65AQI (US)
13th March 2026
85AQI (US)
14th March 2026
67AQI (US)
15th March 2026
55AQI (US)
16th March 2026
60AQI (US)
17th March 2026
84AQI (US)
18th March 2026
111AQI (US)
19th March 2026
103AQI (US)
20th March 2026
94AQI (US)
21st March 2026
94AQI (US)
22nd March 2026
96AQI (US)
23rd March 2026
90AQI (US)
24th March 2026
98AQI (US)
25th March 2026
93AQI (US)
26th March 2026
92AQI (US)
27th March 2026
110AQI (US)
28th March 2026
112AQI (US)
29th March 2026
110AQI (US)
30th March 2026
110AQI (US)
31st March 2026
121AQI (US)
1st April 2026
144AQI (US)
2nd April 2026
141AQI (US)
3rd April 2026
137AQI (US)
4th April 2026
152AQI (US)
5th April 2026
153AQI (US)
6th April 2026
157AQI (US)
7th April 2026
156AQI (US)
8th April 2026
150AQI (US)
9th April 2026
145AQI (US)
10th April 2026
138AQI (US)
11th April 2026
138AQI (US)
12th April 2026
147AQI (US)
13th April 2026
147AQI (US)
14th April 2026
139AQI (US)
15th April 2026
126AQI (US)
16th April 2026
142AQI (US)
17th April 2026
139AQI (US)
18th April 2026
111AQI (US)
19th April 2026
118AQI (US)
20th April 2026
95AQI (US)
21st April 2026
108AQI (US)
22nd April 2026
121AQI (US)
23rd April 2026
133AQI (US)
24th April 2026
71AQI (US)
25th April 2026
46AQI (US)
26th April 2026
68AQI (US)
27th April 2026
76AQI (US)
28th April 2026
70AQI (US)
29th April 2026
58AQI (US)
30th April 2026
49AQI (US)
1st May 2026
59AQI (US)
2nd May 2026
48AQI (US)
3rd May 2026
70AQI (US)
4th May 2026
52AQI (US)
5th May 2026
50AQI (US)
6th May 2026
48AQI (US)
7th May 2026
74AQI (US)
8th May 2026
48AQI (US)
9th May 2026
34AQI (US)
10th May 2026
54AQI (US)
11th May 2026
63AQI (US)
12th May 2026
75AQI (US)
13th May 2026
49AQI (US)
14th May 2026
30AQI (US)
15th May 2026
34AQI (US)
16th May 2026
83AQI (US)
17th May 2026
80AQI (US)
18th May 2026
73AQI (US)
19th May 2026
56AQI (US)
20th May 2026
67AQI (US)
21st May 2026
71AQI (US)
22nd May 2026
60AQI (US)
23rd May 2026
45AQI (US)
24th May 2026
54AQI (US)
25th May 2026
52AQI (US)
26th May 2026
41AQI (US)
27th May 2026
29AQI (US)
28th May 2026
42AQI (US)
29th May 2026
18AQI (US)
30th May 2026
19AQI (US)
31st May 2026
35AQI (US)
1st June 2026
56AQI (US)
2nd June 2026
49AQI (US)
3rd June 2026
56AQI (US)
4th June 2026
41AQI (US)
5th June 2026
24AQI (US)
6th June 2026
24AQI (US)
7th June 2026
23AQI (US)
8th June 2026
23AQI (US)
9th June 2026
23AQI (US)
10th June 2026
36AQI (US)
11th June 2026
31AQI (US)
12th June 2026
31AQI (US)
13th June 2026
29AQI (US)
14th June 2026
27AQI (US)
15th June 2026
24AQI (US)
16th June 2026
22AQI (US)
17th June 2026
38AQI (US)
18th June 2026
32AQI (US)
19th June 2026
24AQI (US)
20th June 2026
31AQI (US)
21st June 2026
20AQI (US)
22nd June 2026
24AQI (US)
23rd June 2026
28AQI (US)
24th June 2026
43AQI (US)
25th June 2026
25AQI (US)
26th June 2026
20AQI (US)
27th June 2026
26AQI (US)
28th June 2026
24AQI (US)
29th June 2026
21AQI (US)
30th June 2026
29AQI (US)
1st July 2026
30AQI (US)
2nd July 2026
22AQI (US)
3rd July 2026
26AQI (US)
4th July 2026
28AQI (US)
5th July 2026
29AQI (US)
6th July 2026
23AQI (US)
7th July 2026
26AQI (US)
8th July 2026
28AQI (US)
9th July 2026
32AQI (US)
10th July 2026
36AQI (US)
11th July 2026
39AQI (US)
12th July 2026
40AQI (US)
13th July 2026
31AQI (US)
14th July 2026
43AQI (US)
15th July 2026
32AQI (US)
16th July 2026
44AQI (US)
17th July 2026
46AQI (US)
18th July 2026
57AQI (US)
19th July 2026
57AQI (US)
20th July 2026
56AQI (US)
21st July 2026
39AQI (US)
22nd July 2026
31AQI (US)
23rd July 2026
27AQI (US)
24th July 2026
28AQI (US)
25th July 2026
29AQI (US)
26th July 2026
41AQI (US)
27th July 2026
31AQI (US)
28th July 2026
31AQI (US)
29th July 2026
31AQI (US)
30th July 2026
38AQI (US)
31st July 2026
25AQI (US)
1st August 2026
30AQI (US)
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

81AQI (US)

71AQI (US)

83AQI (US)

119AQI (US)

52AQI (US)

30AQI (US)

35AQI (US)

30AQI (US)

No. of days

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

202667AQI (US)

4
19
8
5
21
2
4
20
7
2
6
18
4
15
16
28
2
28
3
1
87
87
35
4

Highest AQI (US) recorded in

April

119AQI (US)

Lowest AQI (US) recorded in

August

30AQI (US)

202568AQI (US)

12
19
23
5
18
8
5
26
4
17
14
24
6
23
8
16
15
28
2
5
26
7
22
1
1
30
121
202
37
5

Highest AQI (US) recorded in

January

105AQI (US)

Lowest AQI (US) recorded in

September

42AQI (US)

202456AQI (US)

16
1
1
1
9
3
14
16
22
9
24
4
3
4
9
1
26
3
2
26
3
97
94
6

Highest AQI (US) recorded in

November

81AQI (US)

Lowest AQI (US) recorded in

March

33AQI (US)

202362AQI (US)

12
15
4
4
14
9
1
24
7
6
13
3
15
14
12
3
31
83
80
23
1

Highest AQI (US) recorded in

March

88AQI (US)

Lowest AQI (US) recorded in

June

25AQI (US)

202263AQI (US)

1
2
15
12
3
10
17
3
25
30
8

Highest AQI (US) recorded in

October

108AQI (US)

Lowest AQI (US) recorded in

November

59AQI (US)

Most & Least Polluted Years Over the Last 5 Years

Most Polluted Year Recorded
2025(Avg.)
68AQI (US)
Least Polluted Year Recorded
2024(Avg.)
56AQI (US)

Sam Phrao's annual 2026 AQI (US) (67) shows an average percentage change of 8.1% (worsened AQI (US)) compared to previous years: 2022 (63), 2023 (62), 2024 (56), 2025 (68).