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HistoryAQIPM₂.₅PM₁₀COSO₂NO₂O₃

Sai Yoi, Den Chai District, Phrae, 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

Sai Yoi, Den Chai District, Phrae, Thailand

2024
2025
2026
AQI
.
Days

AQI Trends: Highest and Lowest

Highest AQI recorded on
1st Aug 2025
58AQI
Lowest AQI recorded on
29th Aug 2024
2AQI

Same Day Analysis (9th August):
On this day, AQI across the 3 years varied significantly: 2026 ranks 2nd highest AQI at 33 of Good air quality, showing improvement over 2025 on the same day.

Day & Night AQI Trend: 8th Aug - 9th Aug 2026

Sai Yoi, Den Chai District, Phrae, Thailand

AQI
Day
Night
.

5 AM8th Aug 2026

6 PM

4 AM9th Aug 2026

Day time
Avg. Highest Time
6AM8th Aug

29AQI

Avg. Lowest Time
7AM8th Aug

12AQI

Night time
Avg. Highest Time
10PM8th Aug

25AQI

Avg. Lowest Time
7PM8th Aug

17AQI

In the last 24 hours,

Sai Yoi's AQI reached its highest point of 29 at 6 AM during the Day, while the lowest point, 12, was recorded at 7 AM during the Day between 8th Aug and 9th Aug 2026.

Day & Night AQI Trend : Jul - Aug 2026

Sai Yoi, Den Chai District, Phrae, Thailand

JulAug
11th - 12th12th - 13th13th - 14th14th - 15th15th - 16th16th - 17th17th - 18th18th - 19th19th - 20th20th - 21st21st - 22nd22nd - 23rd23rd - 24th24th - 25th25th - 26th26th - 27th27th - 28th28th - 29th29th - 30th30th - 31st31st - 01st01st - 02nd02nd - 03rd03rd - 04th04th - 05th05th - 06th06th - 07th07th - 08th08th - 09th09th
Day
Night
11th Jul 2026285 AMAQI
11th Jul 2026306 AMAQI
11th Jul 2026307 AMAQI
11th Jul 2026328 AMAQI
11th Jul 2026289 AMAQI
11th Jul 20262410 AMAQI
11th Jul 20262211 AMAQI
11th Jul 20262212 PMAQI
11th Jul 2026221 PMAQI
11th Jul 2026292 PMAQI
11th Jul 2026293 PMAQI
11th Jul 2026254 PMAQI
11th Jul 2026385 PMAQI
11th Jul 2026276 PMAQI
11th Jul 2026307 PMAQI
11th Jul 2026348 PMAQI
11th Jul 2026489 PMAQI
11th Jul 20264410 PMAQI
11th Jul 2026811 PMAQI
12th Jul 20261212 AMAQI
12th Jul 202681 AMAQI
12th Jul 2026122 AMAQI
12th Jul 2026233 AMAQI
12th Jul 2026384 AMAQI

24°C21/28°C

12th Jul 2026555 AMAQI
12th Jul 2026806 AMAQI
12th Jul 2026127 AMAQI
12th Jul 2026318 AMAQI
12th Jul 2026219 AMAQI
12th Jul 20262710 AMAQI
12th Jul 20261211 AMAQI
12th Jul 2026812 PMAQI
12th Jul 202661 PMAQI
12th Jul 202642 PMAQI
12th Jul 202643 PMAQI
12th Jul 202644 PMAQI
12th Jul 202665 PMAQI
12th Jul 202686 PMAQI
12th Jul 2026127 PMAQI
12th Jul 2026218 PMAQI
12th Jul 2026259 PMAQI
12th Jul 20261710 PMAQI
12th Jul 20261711 PMAQI
13th Jul 20261212 AMAQI
13th Jul 202681 AMAQI
13th Jul 202662 AMAQI
13th Jul 202683 AMAQI
13th Jul 202684 AMAQI

25°C22/29°C

13th Jul 2026125 AMAQI
13th Jul 202686 AMAQI
13th Jul 2026147 AMAQI
13th Jul 2026178 AMAQI
13th Jul 2026259 AMAQI
13th Jul 20261210 AMAQI
13th Jul 20261711 AMAQI
13th Jul 20262512 PMAQI
13th Jul 2026271 PMAQI
13th Jul 2026292 PMAQI
13th Jul 2026233 PMAQI
13th Jul 2026324 PMAQI
13th Jul 2026445 PMAQI
13th Jul 2026446 PMAQI
13th Jul 2026517 PMAQI
13th Jul 2026578 PMAQI
13th Jul 2026529 PMAQI
13th Jul 20264810 PMAQI
13th Jul 20262911 PMAQI
14th Jul 20262912 AMAQI
14th Jul 2026271 AMAQI
14th Jul 2026212 AMAQI
14th Jul 2026213 AMAQI
14th Jul 2026234 AMAQI

24°C22/28°C

14th Jul 2026295 AMAQI
14th Jul 2026316 AMAQI
14th Jul 2026297 AMAQI
14th Jul 2026298 AMAQI
14th Jul 2026229 AMAQI
14th Jul 20262110 AMAQI
14th Jul 20261811 AMAQI
14th Jul 20261812 PMAQI
14th Jul 2026171 PMAQI
14th Jul 2026222 PMAQI
14th Jul 2026263 PMAQI
14th Jul 2026264 PMAQI
14th Jul 2026285 PMAQI
14th Jul 2026266 PMAQI
14th Jul 2026307 PMAQI
14th Jul 2026288 PMAQI
14th Jul 2026309 PMAQI
14th Jul 20263210 PMAQI
14th Jul 20263011 PMAQI
15th Jul 20263012 AMAQI
15th Jul 2026271 AMAQI
15th Jul 2026242 AMAQI
15th Jul 2026293 AMAQI
15th Jul 2026204 AMAQI

25°C21/30°C

15th Jul 2026285 AMAQI
15th Jul 2026286 AMAQI
15th Jul 2026267 AMAQI
15th Jul 2026288 AMAQI
15th Jul 2026229 AMAQI
15th Jul 20262010 AMAQI
15th Jul 20261811 AMAQI
15th Jul 20261812 PMAQI
15th Jul 2026171 PMAQI
15th Jul 2026172 PMAQI
15th Jul 2026173 PMAQI
15th Jul 2026174 PMAQI
15th Jul 2026275 PMAQI
15th Jul 2026216 PMAQI
15th Jul 2026237 PMAQI
15th Jul 2026298 PMAQI
15th Jul 2026369 PMAQI
15th Jul 20262910 PMAQI
15th Jul 20263811 PMAQI
16th Jul 20262112 AMAQI
16th Jul 2026211 AMAQI
16th Jul 2026272 AMAQI
16th Jul 2026253 AMAQI
16th Jul 2026204 AMAQI

24°C23/26°C

16th Jul 2026185 AMAQI
16th Jul 2026276 AMAQI
16th Jul 2026277 AMAQI
16th Jul 2026298 AMAQI
16th Jul 2026219 AMAQI
16th Jul 20262110 AMAQI
16th Jul 20262511 AMAQI
16th Jul 20262512 PMAQI
16th Jul 2026191 PMAQI
16th Jul 2026252 PMAQI
16th Jul 2026193 PMAQI
16th Jul 2026214 PMAQI
16th Jul 2026175 PMAQI
16th Jul 2026176 PMAQI
16th Jul 2026237 PMAQI
16th Jul 2026258 PMAQI
16th Jul 2026279 PMAQI
16th Jul 20262310 PMAQI
16th Jul 20262911 PMAQI
17th Jul 20261712 AMAQI
17th Jul 2026141 AMAQI
17th Jul 2026162 AMAQI
17th Jul 2026163 AMAQI
17th Jul 2026184 AMAQI

24°C22/27°C

17th Jul 2026205 AMAQI
17th Jul 2026196 AMAQI
17th Jul 2026247 AMAQI
17th Jul 2026268 AMAQI
17th Jul 2026249 AMAQI
17th Jul 20262410 AMAQI
17th Jul 20262211 AMAQI
17th Jul 20262312 PMAQI
17th Jul 2026211 PMAQI
17th Jul 2026452 PMAQI
17th Jul 2026423 PMAQI
17th Jul 2026364 PMAQI
17th Jul 2026295 PMAQI
17th Jul 2026256 PMAQI
17th Jul 2026657 PMAQI
17th Jul 2026658 PMAQI
17th Jul 2026839 PMAQI
17th Jul 20268210 PMAQI
17th Jul 20268311 PMAQI
18th Jul 20263312 AMAQI
18th Jul 2026731 AMAQI
18th Jul 2026642 AMAQI
18th Jul 2026523 AMAQI
18th Jul 2026474 AMAQI

23°C21/24°C

18th Jul 2026555 AMAQI
18th Jul 2026536 AMAQI
18th Jul 2026587 AMAQI
18th Jul 2026688 AMAQI
18th Jul 2026739 AMAQI
18th Jul 20267910 AMAQI
18th Jul 20266711 AMAQI
18th Jul 20266212 PMAQI
18th Jul 2026601 PMAQI
18th Jul 2026562 PMAQI
18th Jul 2026583 PMAQI
18th Jul 2026544 PMAQI
18th Jul 2026545 PMAQI
18th Jul 2026536 PMAQI
18th Jul 2026587 PMAQI
18th Jul 2026698 PMAQI
18th Jul 2026769 PMAQI
18th Jul 20268110 PMAQI
18th Jul 20268411 PMAQI
19th Jul 20267412 AMAQI
19th Jul 2026661 AMAQI
19th Jul 2026712 AMAQI
19th Jul 2026653 AMAQI
19th Jul 2026674 AMAQI

25°C20/31°C

19th Jul 2026605 AMAQI
19th Jul 2026626 AMAQI
19th Jul 2026657 AMAQI
19th Jul 2026668 AMAQI
19th Jul 2026669 AMAQI
19th Jul 20266210 AMAQI
19th Jul 20265411 AMAQI
19th Jul 20264012 PMAQI
19th Jul 2026361 PMAQI
19th Jul 2026252 PMAQI
19th Jul 2026313 PMAQI
19th Jul 2026334 PMAQI
19th Jul 2026335 PMAQI
19th Jul 2026386 PMAQI
19th Jul 2026507 PMAQI
19th Jul 2026628 PMAQI
19th Jul 2026679 PMAQI
19th Jul 20266810 PMAQI
19th Jul 20267611 PMAQI
20th Jul 20266812 AMAQI
20th Jul 2026801 AMAQI
20th Jul 2026682 AMAQI
20th Jul 2026623 AMAQI
20th Jul 2026654 AMAQI

25°C21/30°C

20th Jul 2026545 AMAQI
20th Jul 2026606 AMAQI
20th Jul 2026587 AMAQI
20th Jul 2026678 AMAQI
20th Jul 2026709 AMAQI
20th Jul 20265610 AMAQI
20th Jul 20265211 AMAQI
20th Jul 20265012 PMAQI
20th Jul 2026441 PMAQI
20th Jul 2026292 PMAQI
20th Jul 2026333 PMAQI
20th Jul 2026364 PMAQI
20th Jul 2026315 PMAQI
20th Jul 2026426 PMAQI
20th Jul 2026647 PMAQI
20th Jul 2026688 PMAQI
20th Jul 2026669 PMAQI
20th Jul 20266310 PMAQI
20th Jul 20265711 PMAQI
21st Jul 20266012 AMAQI
21st Jul 2026541 AMAQI
21st Jul 2026532 AMAQI
21st Jul 2026463 AMAQI
21st Jul 2026544 AMAQI

25°C20/32°C

21st Jul 2026525 AMAQI
21st Jul 2026406 AMAQI
21st Jul 2026547 AMAQI
21st Jul 2026608 AMAQI
21st Jul 2026449 AMAQI
21st Jul 20266511 AMAQI
21st Jul 20264612 PMAQI
21st Jul 2026311 PMAQI
21st Jul 2026312 PMAQI
21st Jul 2026313 PMAQI
21st Jul 2026344 PMAQI
21st Jul 2026845 PMAQI
21st Jul 2026336 PMAQI
21st Jul 2026317 PMAQI
21st Jul 2026298 PMAQI
21st Jul 2026449 PMAQI
21st Jul 20265510 PMAQI
21st Jul 20266911 PMAQI
22nd Jul 20266912 AMAQI
22nd Jul 2026691 AMAQI
22nd Jul 2026692 AMAQI
22nd Jul 2026743 AMAQI
22nd Jul 2026624 AMAQI

24°C22/27°C

22nd Jul 2026705 AMAQI
22nd Jul 2026626 AMAQI
22nd Jul 2026387 AMAQI
22nd Jul 2026468 AMAQI
22nd Jul 2026549 AMAQI
22nd Jul 20265410 AMAQI
22nd Jul 20264911 AMAQI
22nd Jul 20265212 PMAQI
22nd Jul 2026461 PMAQI
22nd Jul 2026522 PMAQI
22nd Jul 2026483 PMAQI
22nd Jul 2026364 PMAQI
22nd Jul 2026255 PMAQI
22nd Jul 2026296 PMAQI
22nd Jul 2026257 PMAQI
22nd Jul 2026258 PMAQI
22nd Jul 2026299 PMAQI
22nd Jul 20263610 PMAQI
22nd Jul 20262911 PMAQI
23rd Jul 20262512 AMAQI
23rd Jul 2026291 AMAQI
23rd Jul 2026332 AMAQI
23rd Jul 2026293 AMAQI
23rd Jul 2026444 AMAQI

23°C22/25°C

23rd Jul 2026365 AMAQI
23rd Jul 2026506 AMAQI
23rd Jul 2026537 AMAQI
23rd Jul 2026528 AMAQI
23rd Jul 2026509 AMAQI
23rd Jul 20262910 AMAQI
23rd Jul 20262111 AMAQI
23rd Jul 20261712 PMAQI
23rd Jul 2026171 PMAQI
23rd Jul 2026212 PMAQI
23rd Jul 2026213 PMAQI
23rd Jul 2026194 PMAQI
23rd Jul 2026215 PMAQI
23rd Jul 2026216 PMAQI
23rd Jul 2026217 PMAQI
23rd Jul 2026218 PMAQI
23rd Jul 2026299 PMAQI
23rd Jul 20265910 PMAQI
23rd Jul 20262111 PMAQI
24th Jul 20261912 AMAQI
24th Jul 2026171 AMAQI
24th Jul 2026712 AMAQI
24th Jul 2026173 AMAQI
24th Jul 2026214 AMAQI

24°C21/29°C

24th Jul 2026295 AMAQI
24th Jul 2026276 AMAQI
24th Jul 2026517 AMAQI
24th Jul 2026448 AMAQI
24th Jul 2026589 AMAQI
24th Jul 20265310 AMAQI
24th Jul 20263611 AMAQI
24th Jul 20265812 PMAQI
24th Jul 2026681 PMAQI
24th Jul 2026572 PMAQI
24th Jul 2026593 PMAQI
24th Jul 2026574 PMAQI
24th Jul 2026575 PMAQI
24th Jul 2026566 PMAQI
24th Jul 2026427 PMAQI
24th Jul 2026648 PMAQI
24th Jul 2026429 PMAQI
24th Jul 20262710 PMAQI
24th Jul 20263111 PMAQI
25th Jul 20265412 AMAQI
25th Jul 2026581 AMAQI
25th Jul 2026502 AMAQI
25th Jul 2026513 AMAQI
25th Jul 2026444 AMAQI

25°C22/30°C

25th Jul 2026295 AMAQI
25th Jul 2026556 AMAQI
25th Jul 2026527 AMAQI
25th Jul 2026528 AMAQI
25th Jul 2026549 AMAQI
25th Jul 20265110 AMAQI
25th Jul 20265511 AMAQI
25th Jul 20266012 PMAQI
25th Jul 2026531 PMAQI
25th Jul 2026482 PMAQI
25th Jul 2026313 PMAQI
25th Jul 2026214 PMAQI
25th Jul 2026215 PMAQI
25th Jul 2026216 PMAQI
25th Jul 2026237 PMAQI
25th Jul 2026368 PMAQI
25th Jul 2026319 PMAQI
25th Jul 20265010 PMAQI
25th Jul 20263311 PMAQI
26th Jul 20264212 AMAQI
26th Jul 2026531 AMAQI
26th Jul 2026402 AMAQI
26th Jul 2026383 AMAQI
26th Jul 2026294 AMAQI

25°C21/30°C

26th Jul 2026295 AMAQI
26th Jul 2026296 AMAQI
26th Jul 2026317 AMAQI
26th Jul 2026508 AMAQI
26th Jul 2026509 AMAQI
26th Jul 20264210 AMAQI
26th Jul 20263811 AMAQI
26th Jul 20264212 PMAQI
26th Jul 2026361 PMAQI
26th Jul 2026292 PMAQI
26th Jul 2026213 PMAQI
26th Jul 2026254 PMAQI
26th Jul 2026255 PMAQI
26th Jul 2026336 PMAQI
26th Jul 2026237 PMAQI
26th Jul 2026258 PMAQI
26th Jul 2026299 PMAQI
26th Jul 20264010 PMAQI
26th Jul 20264011 PMAQI
27th Jul 20263212 AMAQI
27th Jul 2026251 AMAQI
27th Jul 2026292 AMAQI
27th Jul 2026293 AMAQI
27th Jul 2026234 AMAQI

25°C22/30°C

27th Jul 2026215 AMAQI
27th Jul 2026256 AMAQI
27th Jul 2026237 AMAQI
27th Jul 2026448 AMAQI
27th Jul 2026339 AMAQI
27th Jul 20263610 AMAQI
27th Jul 20262511 AMAQI
27th Jul 20262712 PMAQI
27th Jul 2026291 PMAQI
27th Jul 2026252 PMAQI
27th Jul 2026253 PMAQI
27th Jul 2026314 PMAQI
27th Jul 2026275 PMAQI
27th Jul 2026276 PMAQI
27th Jul 2026347 PMAQI
27th Jul 2026388 PMAQI
27th Jul 2026369 PMAQI
27th Jul 20263610 PMAQI
27th Jul 20263111 PMAQI
28th Jul 20263412 AMAQI
28th Jul 2026311 AMAQI
28th Jul 2026312 AMAQI
28th Jul 2026313 AMAQI
28th Jul 2026314 AMAQI

25°C22/28°C

28th Jul 2026405 AMAQI
28th Jul 2026526 AMAQI
28th Jul 2026537 AMAQI
28th Jul 2026688 AMAQI
28th Jul 2026709 AMAQI
28th Jul 20266410 AMAQI
28th Jul 20265811 AMAQI
28th Jul 20266412 PMAQI
28th Jul 2026401 PMAQI
28th Jul 2026232 PMAQI
28th Jul 2026293 PMAQI
28th Jul 2026254 PMAQI
28th Jul 2026275 PMAQI
28th Jul 2026336 PMAQI
28th Jul 2026277 PMAQI
28th Jul 2026388 PMAQI
28th Jul 2026349 PMAQI
28th Jul 20264010 PMAQI
28th Jul 20262111 PMAQI
29th Jul 20263612 AMAQI
29th Jul 2026251 AMAQI
29th Jul 2026322 AMAQI
29th Jul 2026323 AMAQI
29th Jul 2026464 AMAQI

24°C22/28°C

29th Jul 2026365 AMAQI
29th Jul 2026346 AMAQI
29th Jul 2026387 AMAQI
29th Jul 2026588 AMAQI
29th Jul 2026529 AMAQI
29th Jul 20263210 AMAQI
29th Jul 20264711 AMAQI
29th Jul 20265012 PMAQI
29th Jul 2026421 PMAQI
29th Jul 2026342 PMAQI
29th Jul 2026343 PMAQI
29th Jul 2026294 PMAQI
29th Jul 2026235 PMAQI
29th Jul 2026256 PMAQI
29th Jul 2026297 PMAQI
29th Jul 2026258 PMAQI
29th Jul 2026279 PMAQI
29th Jul 20262710 PMAQI
29th Jul 20263811 PMAQI
30th Jul 20265412 AMAQI
30th Jul 2026641 AMAQI
30th Jul 2026642 AMAQI
30th Jul 2026273 AMAQI
30th Jul 202684 AMAQI

24°C23/26°C

30th Jul 202685 AMAQI
30th Jul 2026106 AMAQI
30th Jul 2026167 AMAQI
30th Jul 2026128 AMAQI
30th Jul 2026109 AMAQI
30th Jul 20261210 AMAQI
30th Jul 20261411 AMAQI
30th Jul 20261412 PMAQI
30th Jul 2026231 PMAQI
30th Jul 2026212 PMAQI
30th Jul 2026193 PMAQI
30th Jul 2026194 PMAQI
30th Jul 2026145 PMAQI
30th Jul 2026146 PMAQI
30th Jul 2026177 PMAQI
30th Jul 2026218 PMAQI
30th Jul 2026259 PMAQI
30th Jul 20262310 PMAQI
30th Jul 20261211 PMAQI
31st Jul 20261712 AMAQI
31st Jul 2026171 AMAQI
31st Jul 2026122 AMAQI
31st Jul 2026103 AMAQI
31st Jul 2026124 AMAQI

24°C23/28°C

31st Jul 2026125 AMAQI
31st Jul 2026196 AMAQI
31st Jul 2026177 AMAQI
31st Jul 2026218 AMAQI
31st Jul 2026219 AMAQI
31st Jul 20262110 AMAQI
31st Jul 20262511 AMAQI
31st Jul 20261712 PMAQI
31st Jul 2026141 PMAQI
31st Jul 2026142 PMAQI
31st Jul 2026123 PMAQI
31st Jul 2026124 PMAQI
31st Jul 202685 PMAQI
31st Jul 2026126 PMAQI
31st Jul 2026177 PMAQI
31st Jul 2026128 PMAQI
31st Jul 2026219 PMAQI
31st Jul 20261710 PMAQI
31st Jul 20261411 PMAQI
1st Aug 20261712 AMAQI
1st Aug 2026171 AMAQI
1st Aug 2026272 AMAQI
1st Aug 2026273 AMAQI
1st Aug 2026234 AMAQI

25°C22/28°C

1st Aug 2026365 AMAQI
1st Aug 2026296 AMAQI
1st Aug 2026277 AMAQI
1st Aug 2026408 AMAQI
1st Aug 2026489 AMAQI
1st Aug 20265010 AMAQI
1st Aug 20264611 AMAQI
1st Aug 20264612 PMAQI
1st Aug 2026361 PMAQI
1st Aug 2026422 PMAQI
1st Aug 2026403 PMAQI
1st Aug 2026254 PMAQI
1st Aug 2026235 PMAQI
1st Aug 2026256 PMAQI
1st Aug 2026407 PMAQI
1st Aug 2026368 PMAQI
1st Aug 2026489 PMAQI
1st Aug 20263610 PMAQI
1st Aug 20263611 PMAQI
2nd Aug 20263312 AMAQI
2nd Aug 2026311 AMAQI
2nd Aug 2026252 AMAQI
2nd Aug 2026363 AMAQI
2nd Aug 2026294 AMAQI

24°C23/27°C

2nd Aug 2026315 AMAQI
2nd Aug 2026446 AMAQI
2nd Aug 2026467 AMAQI
2nd Aug 2026368 AMAQI
2nd Aug 2026489 AMAQI
2nd Aug 20264010 AMAQI
2nd Aug 20264211 AMAQI
2nd Aug 20263112 PMAQI
2nd Aug 2026401 PMAQI
2nd Aug 2026402 PMAQI
2nd Aug 2026293 PMAQI
2nd Aug 2026274 PMAQI
2nd Aug 2026255 PMAQI
2nd Aug 2026326 PMAQI
2nd Aug 2026367 PMAQI
2nd Aug 2026368 PMAQI
2nd Aug 2026309 PMAQI
2nd Aug 20263310 PMAQI
2nd Aug 20262711 PMAQI
3rd Aug 20263412 AMAQI
3rd Aug 2026361 AMAQI
3rd Aug 2026292 AMAQI
3rd Aug 2026293 AMAQI
3rd Aug 2026444 AMAQI

24°C23/27°C

3rd Aug 2026485 AMAQI
3rd Aug 2026366 AMAQI
3rd Aug 2026407 AMAQI
3rd Aug 2026468 AMAQI
3rd Aug 2026489 AMAQI
3rd Aug 20265410 AMAQI
3rd Aug 20265211 AMAQI
3rd Aug 20264912 PMAQI
3rd Aug 2026341 PMAQI
3rd Aug 2026272 PMAQI
3rd Aug 2026363 PMAQI
3rd Aug 2026404 PMAQI
3rd Aug 2026295 PMAQI
3rd Aug 2026236 PMAQI
3rd Aug 2026247 PMAQI
3rd Aug 2026318 PMAQI
3rd Aug 2026269 PMAQI
3rd Aug 20262110 PMAQI
3rd Aug 20262511 PMAQI
4th Aug 20263412 AMAQI
4th Aug 2026321 AMAQI
4th Aug 2026402 AMAQI
4th Aug 2026293 AMAQI
4th Aug 2026274 AMAQI

25°C22/29°C

4th Aug 2026305 AMAQI
4th Aug 2026336 AMAQI
4th Aug 2026257 AMAQI
4th Aug 2026218 AMAQI
4th Aug 2026319 AMAQI
4th Aug 20263210 AMAQI
4th Aug 20264411 AMAQI
4th Aug 20263812 PMAQI
4th Aug 2026471 PMAQI
4th Aug 2026462 PMAQI
4th Aug 2026293 PMAQI
4th Aug 2026274 PMAQI
4th Aug 2026295 PMAQI
4th Aug 2026276 PMAQI
4th Aug 2026487 PMAQI
4th Aug 2026528 PMAQI
4th Aug 2026339 PMAQI
4th Aug 20262510 PMAQI
4th Aug 20263111 PMAQI
5th Aug 20264012 AMAQI
5th Aug 2026341 AMAQI
5th Aug 2026252 AMAQI
5th Aug 2026293 AMAQI
5th Aug 2026324 AMAQI

25°C22/30°C

5th Aug 2026185 AMAQI
5th Aug 2026326 AMAQI
5th Aug 2026407 AMAQI
5th Aug 2026468 AMAQI
5th Aug 2026449 AMAQI
5th Aug 20263810 AMAQI
5th Aug 20263111 AMAQI
5th Aug 20264012 PMAQI
5th Aug 2026421 PMAQI
5th Aug 2026382 PMAQI
5th Aug 2026273 PMAQI
5th Aug 2026344 PMAQI
5th Aug 2026255 PMAQI
5th Aug 2026276 PMAQI
5th Aug 2026427 PMAQI
5th Aug 2026388 PMAQI
5th Aug 2026429 PMAQI
5th Aug 20264210 PMAQI
5th Aug 20262511 PMAQI
6th Aug 20264012 AMAQI
6th Aug 2026341 AMAQI
6th Aug 2026252 AMAQI
6th Aug 2026293 AMAQI
6th Aug 2026254 AMAQI

24°C23/26°C

6th Aug 2026275 AMAQI
6th Aug 2026216 AMAQI
6th Aug 2026387 AMAQI
6th Aug 2026528 AMAQI
6th Aug 2026479 AMAQI
6th Aug 20264510 AMAQI
6th Aug 20264511 AMAQI
6th Aug 20261912 PMAQI
6th Aug 2026141 PMAQI
6th Aug 2026672 PMAQI
6th Aug 2026313 PMAQI
6th Aug 20261524 PMAQI
6th Aug 2026765 PMAQI
6th Aug 20261066 PMAQI
6th Aug 2026887 PMAQI
6th Aug 2026318 PMAQI
6th Aug 2026339 PMAQI
6th Aug 20263210 PMAQI
6th Aug 20263011 PMAQI
7th Aug 20262112 AMAQI
7th Aug 2026231 AMAQI
7th Aug 2026172 AMAQI
7th Aug 2026193 AMAQI
7th Aug 2026514 AMAQI

25°C23/30°C

7th Aug 2026565 AMAQI
7th Aug 2026566 AMAQI
7th Aug 2026127 AMAQI
7th Aug 2026218 AMAQI
7th Aug 2026319 AMAQI
7th Aug 20261210 AMAQI
7th Aug 20261411 AMAQI
7th Aug 20261712 PMAQI
7th Aug 2026171 PMAQI
7th Aug 2026122 PMAQI
7th Aug 2026143 PMAQI
7th Aug 2026174 PMAQI
7th Aug 2026145 PMAQI
7th Aug 2026176 PMAQI
7th Aug 2026237 PMAQI
7th Aug 2026338 PMAQI
7th Aug 2026199 PMAQI
7th Aug 20262510 PMAQI
7th Aug 20262111 PMAQI
8th Aug 20261412 AMAQI
8th Aug 2026211 AMAQI
8th Aug 2026212 AMAQI
8th Aug 2026213 AMAQI
8th Aug 2026174 AMAQI

25°C23/29°C

8th Aug 2026175 AMAQI
8th Aug 2026296 AMAQI
8th Aug 2026127 AMAQI
8th Aug 2026178 AMAQI
8th Aug 2026219 AMAQI
8th Aug 20262110 AMAQI
8th Aug 20261911 AMAQI
8th Aug 20261912 PMAQI
8th Aug 2026211 PMAQI
8th Aug 2026172 PMAQI
8th Aug 2026213 PMAQI
8th Aug 2026214 PMAQI
8th Aug 2026145 PMAQI
8th Aug 2026196 PMAQI
8th Aug 2026177 PMAQI
8th Aug 2026198 PMAQI
8th Aug 2026219 PMAQI
8th Aug 20262510 PMAQI
8th Aug 20262311 PMAQI
9th Aug 20262512 AMAQI
9th Aug 2026211 AMAQI
9th Aug 2026212 AMAQI
9th Aug 2026213 AMAQI
9th Aug 2026214 AMAQI

24°C23/25°C

9th Aug 2026295 AMAQI
5 AM
9th Aug 2026336 AMAQI
9th Aug 2026447 AMAQI
9th Aug 2026428 AMAQI
9th Aug 2026349 AMAQI
9th Aug 20264410 AMAQI
9th Aug 20264811 AMAQI
11 AM
9th Aug 20263412 PMAQI
9th Aug 2026361 PMAQI
9th Aug 2026272 PMAQI
9th Aug 2026253 PMAQI
9th Aug 2026274 PMAQI
9th Aug 2026365 PMAQI
9th Aug 2026276 PMAQI
6 PM
9th Aug 2026407 PMAQI
9th Aug 2026458 PMAQI
9th Aug 2026369 PMAQI
9th Aug 20264210 PMAQI
9th Aug 20263611 PMAQI
11 PM
4 AM

24°C23/26°C

Day time
Avg. Highest Time
8 AM - 9 AM

41AQI

2 hours / Day
60 hours / Month
Avg. Lowest Time
3 PM

29AQI

1 hours / Day
30 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 8 AM to 9 AM (Avg. 41), while the lowest AQI was between 3 PM to 3 PM (Avg. 29).
Night time
Avg. Highest Time
8 PM - 10 PM

38AQI

3 hours / Day
90 hours / Month
Avg. Lowest Time
3 AM

32AQI

1 hours / Day
30 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 8 PM to 10 PM (Avg. 38), while the lowest AQI was between 3 AM to 3 AM (Avg. 32).

2026 Days Vs Air Quality

Sai Yoi, Den Chai District, Phrae, Thailand

2026

35%

78

45%

99

18%

39

2%

5

Total number of days with different AQI categories in last 221 days in 2026 (144 days remaining)

Good
78 Days
Moderate
99 Days
Poor
39 Days
Unhealthy
5 Days
Severe
0 Days
Hazardous
0 Days

Under WHO’s Safe Air Quality Limits: 35%

Health Risk Level:

High

In 2026, 35% of 221 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

Sai Yoi, Den Chai District, Phrae, 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
76AQI (US)
2nd January 2026
76AQI (US)
3rd January 2026
67AQI (US)
4th January 2026
59AQI (US)
5th January 2026
56AQI (US)
6th January 2026
61AQI (US)
7th January 2026
62AQI (US)
8th January 2026
64AQI (US)
9th January 2026
75AQI (US)
10th January 2026
76AQI (US)
11th January 2026
73AQI (US)
12th January 2026
83AQI (US)
13th January 2026
78AQI (US)
14th January 2026
80AQI (US)
15th January 2026
90AQI (US)
16th January 2026
94AQI (US)
17th January 2026
83AQI (US)
18th January 2026
71AQI (US)
19th January 2026
73AQI (US)
20th January 2026
71AQI (US)
21st January 2026
71AQI (US)
22nd January 2026
79AQI (US)
23rd January 2026
90AQI (US)
24th January 2026
88AQI (US)
25th January 2026
84AQI (US)
26th January 2026
82AQI (US)
27th January 2026
86AQI (US)
28th January 2026
89AQI (US)
29th January 2026
91AQI (US)
30th January 2026
86AQI (US)
31st January 2026
97AQI (US)
1st February 2026
95AQI (US)
2nd February 2026
80AQI (US)
3rd February 2026
56AQI (US)
4th February 2026
58AQI (US)
5th February 2026
67AQI (US)
6th February 2026
75AQI (US)
7th February 2026
75AQI (US)
8th February 2026
78AQI (US)
9th February 2026
73AQI (US)
10th February 2026
69AQI (US)
11th February 2026
74AQI (US)
12th February 2026
82AQI (US)
13th February 2026
87AQI (US)
14th February 2026
99AQI (US)
15th February 2026
108AQI (US)
16th February 2026
103AQI (US)
17th February 2026
100AQI (US)
18th February 2026
89AQI (US)
19th February 2026
65AQI (US)
20th February 2026
66AQI (US)
21st February 2026
71AQI (US)
22nd February 2026
96AQI (US)
23rd February 2026
106AQI (US)
24th February 2026
105AQI (US)
25th February 2026
70AQI (US)
26th February 2026
42AQI (US)
27th February 2026
68AQI (US)
28th February 2026
74AQI (US)
1st March 2026
90AQI (US)
2nd March 2026
94AQI (US)
3rd March 2026
106AQI (US)
4th March 2026
112AQI (US)
5th March 2026
116AQI (US)
6th March 2026
100AQI (US)
7th March 2026
88AQI (US)
8th March 2026
102AQI (US)
9th March 2026
100AQI (US)
10th March 2026
96AQI (US)
11th March 2026
85AQI (US)
12th March 2026
68AQI (US)
13th March 2026
73AQI (US)
14th March 2026
80AQI (US)
15th March 2026
86AQI (US)
16th March 2026
81AQI (US)
17th March 2026
91AQI (US)
18th March 2026
92AQI (US)
19th March 2026
101AQI (US)
20th March 2026
101AQI (US)
21st March 2026
106AQI (US)
22nd March 2026
122AQI (US)
23rd March 2026
114AQI (US)
24th March 2026
140AQI (US)
25th March 2026
140AQI (US)
26th March 2026
151AQI (US)
27th March 2026
150AQI (US)
28th March 2026
146AQI (US)
29th March 2026
127AQI (US)
30th March 2026
138AQI (US)
31st March 2026
139AQI (US)
1st April 2026
158AQI (US)
2nd April 2026
158AQI (US)
3rd April 2026
142AQI (US)
4th April 2026
151AQI (US)
5th April 2026
154AQI (US)
6th April 2026
146AQI (US)
7th April 2026
143AQI (US)
8th April 2026
140AQI (US)
9th April 2026
112AQI (US)
10th April 2026
118AQI (US)
11th April 2026
128AQI (US)
12th April 2026
150AQI (US)
13th April 2026
135AQI (US)
14th April 2026
128AQI (US)
15th April 2026
123AQI (US)
16th April 2026
118AQI (US)
17th April 2026
143AQI (US)
18th April 2026
126AQI (US)
19th April 2026
129AQI (US)
20th April 2026
116AQI (US)
21st April 2026
107AQI (US)
22nd April 2026
123AQI (US)
23rd April 2026
121AQI (US)
24th April 2026
98AQI (US)
25th April 2026
96AQI (US)
26th April 2026
92AQI (US)
27th April 2026
87AQI (US)
28th April 2026
83AQI (US)
29th April 2026
72AQI (US)
30th April 2026
89AQI (US)
1st May 2026
72AQI (US)
2nd May 2026
88AQI (US)
3rd May 2026
85AQI (US)
4th May 2026
94AQI (US)
5th May 2026
51AQI (US)
6th May 2026
64AQI (US)
7th May 2026
75AQI (US)
8th May 2026
56AQI (US)
9th May 2026
53AQI (US)
10th May 2026
32AQI (US)
11th May 2026
47AQI (US)
12th May 2026
37AQI (US)
13th May 2026
36AQI (US)
14th May 2026
31AQI (US)
15th May 2026
38AQI (US)
16th May 2026
88AQI (US)
17th May 2026
85AQI (US)
18th May 2026
70AQI (US)
19th May 2026
55AQI (US)
20th May 2026
65AQI (US)
21st May 2026
70AQI (US)
22nd May 2026
64AQI (US)
23rd May 2026
40AQI (US)
24th May 2026
52AQI (US)
25th May 2026
53AQI (US)
26th May 2026
41AQI (US)
27th May 2026
24AQI (US)
28th May 2026
49AQI (US)
29th May 2026
25AQI (US)
30th May 2026
26AQI (US)
31st May 2026
42AQI (US)
1st June 2026
46AQI (US)
2nd June 2026
60AQI (US)
3rd June 2026
66AQI (US)
4th June 2026
54AQI (US)
5th June 2026
21AQI (US)
6th June 2026
21AQI (US)
7th June 2026
26AQI (US)
8th June 2026
20AQI (US)
9th June 2026
22AQI (US)
10th June 2026
21AQI (US)
11th June 2026
24AQI (US)
12th June 2026
22AQI (US)
13th June 2026
22AQI (US)
14th June 2026
21AQI (US)
15th June 2026
20AQI (US)
16th June 2026
25AQI (US)
17th June 2026
22AQI (US)
18th June 2026
24AQI (US)
19th June 2026
25AQI (US)
20th June 2026
27AQI (US)
21st June 2026
21AQI (US)
22nd June 2026
19AQI (US)
23rd June 2026
21AQI (US)
24th June 2026
21AQI (US)
25th June 2026
25AQI (US)
26th June 2026
30AQI (US)
27th June 2026
28AQI (US)
28th June 2026
27AQI (US)
29th June 2026
23AQI (US)
30th June 2026
20AQI (US)
1st July 2026
22AQI (US)
2nd July 2026
21AQI (US)
3rd July 2026
22AQI (US)
4th July 2026
22AQI (US)
5th July 2026
20AQI (US)
6th July 2026
22AQI (US)
7th July 2026
24AQI (US)
8th July 2026
23AQI (US)
9th July 2026
37AQI (US)
10th July 2026
44AQI (US)
11th July 2026
29AQI (US)
12th July 2026
19AQI (US)
13th July 2026
25AQI (US)
14th July 2026
26AQI (US)
15th July 2026
25AQI (US)
16th July 2026
23AQI (US)
17th July 2026
35AQI (US)
18th July 2026
62AQI (US)
19th July 2026
56AQI (US)
20th July 2026
56AQI (US)
21st July 2026
48AQI (US)
22nd July 2026
48AQI (US)
23rd July 2026
31AQI (US)
24th July 2026
44AQI (US)
25th July 2026
43AQI (US)
26th July 2026
35AQI (US)
27th July 2026
30AQI (US)
28th July 2026
40AQI (US)
29th July 2026
35AQI (US)
30th July 2026
22AQI (US)
31st July 2026
16AQI (US)
1st August 2026
34AQI (US)
2nd August 2026
34AQI (US)
3rd August 2026
36AQI (US)
4th August 2026
34AQI (US)
5th August 2026
35AQI (US)
6th August 2026
46AQI (US)
7th August 2026
23AQI (US)
8th August 2026
19AQI (US)
9th August 2026
33AQI (US)
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

78AQI (US)

80AQI (US)

108AQI (US)

123AQI (US)

55AQI (US)

27AQI (US)

32AQI (US)

33AQI (US)

No. of days

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

202670AQI (US)

31
1
23
4
14
16
1
7
19
4
13
18
27
3
28
3
9
78
99
39
5

Highest AQI (US) recorded in

April

123AQI (US)

Lowest AQI (US) recorded in

June

27AQI (US)

202572AQI (US)

18
13
10
18
8
15
8
23
7
6
25
4
26
13
18
15
16
21
9
1
30
9
21
31
69
235
53
8

Highest AQI (US) recorded in

March

124AQI (US)

Lowest AQI (US) recorded in

September

43AQI (US)

202466AQI (US)

1
24
6
3
12
14
5
22
4
1
2
24
3
15
10
6
30
31
31
3
6
7
30
1
30
122
120
72
7

Highest AQI (US) recorded in

March

124AQI (US)

Lowest AQI (US) recorded in

September

11AQI (US)

2023105AQI (US)

9
21
1
1
10
17
4
22
5
2
8
19
1
20
11
22
8
16
3
31
38
74
54
59
6

Highest AQI (US) recorded in

March

176AQI (US)

Lowest AQI (US) recorded in

July

25AQI (US)

202286AQI (US)

2
1
3
25
3
11
3
30
12

Highest AQI (US) recorded in

December

113AQI (US)

Lowest AQI (US) recorded in

November

72AQI (US)

Most & Least Polluted Years Over the Last 5 Years

Most Polluted Year Recorded
2023(Avg.)
105AQI (US)
Least Polluted Year Recorded
2024(Avg.)
66AQI (US)

Sai Yoi's annual 2026 AQI (US) (70) shows an average percentage change of -12.1% (improved AQI (US)) compared to previous years: 2022 (86), 2023 (105), 2024 (66), 2025 (72).