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HistoryAQIPM₂.₅PM₁₀COSO₂NO₂O₃

Rom Yen, Chiang Kham, Phayao, 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

Rom Yen, Chiang Kham, Phayao, Thailand

2024
2025
2026
AQI
.
Days

AQI Trends: Highest and Lowest

Highest AQI recorded on
31st Aug 2024
55AQI
Lowest AQI recorded on
3rd Aug 2026
14AQI

Same Day Analysis (15th August):
On this day, AQI across the 3 years varied significantly: 2026 ranks 3rd highest AQI at 22 of Good air quality, showing improvement over 2025 and 2024 on the same day.

Day & Night AQI Trend: 14th Aug - 15th Aug 2026

Rom Yen, Chiang Kham, Phayao, Thailand

AQI
Day
Night
.

5 AM14th Aug 2026

6 PM

4 AM15th Aug 2026

Day time
Avg. Highest Time
10AM14th Aug

55AQI

Avg. Lowest Time
6PM14th Aug

8AQI

Night time
Avg. Highest Time
9PM14th Aug

54AQI

Avg. Lowest Time
2AM15th Aug

12AQI

In the last 24 hours,

Rom Yen's AQI reached its highest point of 55 at 10 AM during the Day, while the lowest point, 8, was recorded at 6 PM during the Day between 14th Aug and 15th Aug 2026.

Day & Night AQI Trend : Jul - Aug 2026

Rom Yen, Chiang Kham, Phayao, Thailand

JulAug
17th - 18th18th - 19th19th - 20th20th - 21st21st - 22nd22nd - 23rd23rd - 24th24th - 25th25th - 26th26th - 27th27th - 28th28th - 29th29th - 30th30th - 31st31st - 01st01st - 02nd02nd - 03rd03rd - 04th04th - 05th05th - 06th06th - 07th07th - 08th08th - 09th09th - 10th10th - 11th11th - 12th12th - 13th13th - 14th14th - 15th15th
Day
Night
17th Jul 2026175 AMAQI
17th Jul 2026176 AMAQI
17th Jul 2026177 AMAQI
17th Jul 2026388 AMAQI
17th Jul 2026599 AMAQI
17th Jul 20262110 AMAQI
17th Jul 20262511 AMAQI
17th Jul 20262512 PMAQI
17th Jul 2026331 PMAQI
17th Jul 2026362 PMAQI
17th Jul 2026333 PMAQI
17th Jul 2026314 PMAQI
17th Jul 2026445 PMAQI
17th Jul 2026626 PMAQI
17th Jul 2026647 PMAQI
17th Jul 2026748 PMAQI
17th Jul 2026569 PMAQI
17th Jul 20264010 PMAQI
17th Jul 20264611 PMAQI
18th Jul 20263612 AMAQI
18th Jul 2026331 AMAQI
18th Jul 2026402 AMAQI
18th Jul 2026383 AMAQI
18th Jul 2026404 AMAQI

21°C20/23°C

18th Jul 2026405 AMAQI
18th Jul 2026486 AMAQI
18th Jul 2026577 AMAQI
18th Jul 2026668 AMAQI
18th Jul 2026689 AMAQI
18th Jul 20265110 AMAQI
18th Jul 20266011 AMAQI
18th Jul 20266912 PMAQI
18th Jul 2026641 PMAQI
18th Jul 2026632 PMAQI
18th Jul 2026673 PMAQI
18th Jul 2026564 PMAQI
18th Jul 2026525 PMAQI
18th Jul 2026626 PMAQI
18th Jul 2026557 PMAQI
18th Jul 2026648 PMAQI
18th Jul 2026599 PMAQI
18th Jul 20265710 PMAQI
18th Jul 20266411 PMAQI
19th Jul 20265512 AMAQI
19th Jul 2026551 AMAQI
19th Jul 2026552 AMAQI
19th Jul 2026533 AMAQI
19th Jul 2026554 AMAQI

21°C20/23°C

19th Jul 2026585 AMAQI
19th Jul 2026556 AMAQI
19th Jul 2026557 AMAQI
19th Jul 2026978 AMAQI
19th Jul 2026799 AMAQI
19th Jul 20267610 AMAQI
19th Jul 20266911 AMAQI
19th Jul 20266712 PMAQI
19th Jul 2026671 PMAQI
19th Jul 2026722 PMAQI
19th Jul 2026683 PMAQI
19th Jul 2026714 PMAQI
19th Jul 2026585 PMAQI
19th Jul 2026636 PMAQI
19th Jul 2026587 PMAQI
19th Jul 2026658 PMAQI
19th Jul 2026679 PMAQI
19th Jul 20265410 PMAQI
19th Jul 20265311 PMAQI
20th Jul 20265012 AMAQI
20th Jul 2026421 AMAQI
20th Jul 2026422 AMAQI
20th Jul 2026423 AMAQI
20th Jul 2026424 AMAQI

22°C19/27°C

20th Jul 2026425 AMAQI
20th Jul 2026506 AMAQI
20th Jul 2026667 AMAQI
20th Jul 2026768 AMAQI
20th Jul 2026569 AMAQI
20th Jul 20264810 AMAQI
20th Jul 20265111 AMAQI
20th Jul 20265212 PMAQI
20th Jul 2026501 PMAQI
20th Jul 2026402 PMAQI
20th Jul 2026423 PMAQI
20th Jul 2026424 PMAQI
20th Jul 2026465 PMAQI
20th Jul 2026466 PMAQI
20th Jul 2026567 PMAQI
20th Jul 2026628 PMAQI
20th Jul 2026629 PMAQI
20th Jul 20264410 PMAQI
20th Jul 20265211 PMAQI
21st Jul 20265812 AMAQI
21st Jul 2026481 AMAQI
21st Jul 2026382 AMAQI
21st Jul 2026383 AMAQI
21st Jul 2026444 AMAQI

23°C20/27°C

21st Jul 2026335 AMAQI
21st Jul 2026526 AMAQI
21st Jul 2026567 AMAQI
21st Jul 2026868 AMAQI
21st Jul 2026589 AMAQI
21st Jul 20265111 AMAQI
21st Jul 20265012 PMAQI
21st Jul 2026311 PMAQI
21st Jul 2026232 PMAQI
21st Jul 2026193 PMAQI
21st Jul 2026214 PMAQI
21st Jul 2026745 PMAQI
21st Jul 2026146 PMAQI
21st Jul 2026167 PMAQI
21st Jul 2026218 PMAQI
21st Jul 2026219 PMAQI
21st Jul 20262510 PMAQI
21st Jul 20262911 PMAQI
22nd Jul 20263112 AMAQI
22nd Jul 2026291 AMAQI
22nd Jul 2026232 AMAQI
22nd Jul 2026123 AMAQI
22nd Jul 2026174 AMAQI

21°C20/26°C

22nd Jul 2026195 AMAQI
22nd Jul 2026216 AMAQI
22nd Jul 2026177 AMAQI
22nd Jul 2026298 AMAQI
22nd Jul 2026259 AMAQI
22nd Jul 20261710 AMAQI
22nd Jul 20261211 AMAQI
22nd Jul 20261212 PMAQI
22nd Jul 202681 PMAQI
22nd Jul 202682 PMAQI
22nd Jul 202683 PMAQI
22nd Jul 202684 PMAQI
22nd Jul 202685 PMAQI
22nd Jul 202686 PMAQI
22nd Jul 2026147 PMAQI
22nd Jul 2026198 PMAQI
22nd Jul 2026199 PMAQI
22nd Jul 20261710 PMAQI
22nd Jul 2026811 PMAQI
23rd Jul 20261712 AMAQI
23rd Jul 2026191 AMAQI
23rd Jul 2026212 AMAQI
23rd Jul 2026213 AMAQI
23rd Jul 2026254 AMAQI

22°C21/25°C

23rd Jul 2026195 AMAQI
23rd Jul 2026256 AMAQI
23rd Jul 2026257 AMAQI
23rd Jul 2026488 AMAQI
23rd Jul 2026149 AMAQI
23rd Jul 20263810 AMAQI
23rd Jul 20264011 AMAQI
23rd Jul 20265412 PMAQI
23rd Jul 2026401 PMAQI
23rd Jul 2026422 PMAQI
23rd Jul 2026493 PMAQI
23rd Jul 2026254 PMAQI
23rd Jul 2026325 PMAQI
23rd Jul 2026506 PMAQI
23rd Jul 2026347 PMAQI
23rd Jul 2026508 PMAQI
23rd Jul 2026259 PMAQI
23rd Jul 20264610 PMAQI
23rd Jul 20262511 PMAQI
24th Jul 20262512 AMAQI
24th Jul 2026421 AMAQI
24th Jul 2026532 AMAQI
24th Jul 2026443 AMAQI
24th Jul 2026364 AMAQI

23°C21/27°C

24th Jul 2026275 AMAQI
24th Jul 2026176 AMAQI
24th Jul 2026297 AMAQI
24th Jul 2026298 AMAQI
24th Jul 2026259 AMAQI
24th Jul 20262310 AMAQI
24th Jul 20262711 AMAQI
24th Jul 20264012 PMAQI
24th Jul 2026191 PMAQI
24th Jul 2026142 PMAQI
24th Jul 2026173 PMAQI
24th Jul 2026144 PMAQI
24th Jul 2026125 PMAQI
24th Jul 2026296 PMAQI
24th Jul 2026177 PMAQI
24th Jul 2026218 PMAQI
24th Jul 2026179 PMAQI
24th Jul 20261710 PMAQI
24th Jul 20263311 PMAQI
25th Jul 20262512 AMAQI
25th Jul 2026211 AMAQI
25th Jul 2026252 AMAQI
25th Jul 2026513 AMAQI
25th Jul 2026464 AMAQI

23°C21/28°C

25th Jul 2026595 AMAQI
25th Jul 2026506 AMAQI
25th Jul 2026367 AMAQI
25th Jul 2026508 AMAQI
25th Jul 2026489 AMAQI
25th Jul 20262110 AMAQI
25th Jul 20262511 AMAQI
25th Jul 20262312 PMAQI
25th Jul 2026211 PMAQI
25th Jul 2026252 PMAQI
25th Jul 2026383 PMAQI
25th Jul 2026314 PMAQI
25th Jul 2026215 PMAQI
25th Jul 2026176 PMAQI
25th Jul 2026127 PMAQI
25th Jul 2026298 PMAQI
25th Jul 2026449 PMAQI
25th Jul 20268010 PMAQI
25th Jul 20265611 PMAQI
26th Jul 20263112 AMAQI
26th Jul 2026211 AMAQI
26th Jul 2026382 AMAQI
26th Jul 2026503 AMAQI
26th Jul 2026234 AMAQI

23°C21/28°C

26th Jul 2026215 AMAQI
26th Jul 2026196 AMAQI
26th Jul 2026147 AMAQI
26th Jul 2026238 AMAQI
26th Jul 2026219 AMAQI
26th Jul 20262110 AMAQI
26th Jul 20262311 AMAQI
26th Jul 20261412 PMAQI
26th Jul 2026141 PMAQI
26th Jul 2026122 PMAQI
26th Jul 2026123 PMAQI
26th Jul 202684 PMAQI
26th Jul 2026125 PMAQI
26th Jul 2026176 PMAQI
26th Jul 2026237 PMAQI
26th Jul 2026368 PMAQI
26th Jul 2026509 PMAQI
26th Jul 20265110 PMAQI
26th Jul 20265311 PMAQI
27th Jul 20262512 AMAQI
27th Jul 2026141 AMAQI
27th Jul 2026172 AMAQI
27th Jul 2026143 AMAQI
27th Jul 202684 AMAQI

23°C21/26°C

27th Jul 202685 AMAQI
27th Jul 202686 AMAQI
27th Jul 2026127 AMAQI
27th Jul 2026218 AMAQI
27th Jul 2026149 AMAQI
27th Jul 20261210 AMAQI
27th Jul 20261411 AMAQI
27th Jul 20261212 PMAQI
27th Jul 2026121 PMAQI
27th Jul 2026122 PMAQI
27th Jul 202683 PMAQI
27th Jul 2026124 PMAQI
27th Jul 2026195 PMAQI
27th Jul 2026256 PMAQI
27th Jul 2026297 PMAQI
27th Jul 2026218 PMAQI
27th Jul 2026219 PMAQI
27th Jul 20261710 PMAQI
27th Jul 20261711 PMAQI
28th Jul 20261412 AMAQI
28th Jul 2026171 AMAQI
28th Jul 2026212 AMAQI
28th Jul 2026173 AMAQI
28th Jul 2026174 AMAQI

23°C22/28°C

28th Jul 2026175 AMAQI
28th Jul 2026176 AMAQI
28th Jul 2026257 AMAQI
28th Jul 2026258 AMAQI
28th Jul 2026219 AMAQI
28th Jul 20262110 AMAQI
28th Jul 20262311 AMAQI
28th Jul 20262312 PMAQI
28th Jul 2026191 PMAQI
28th Jul 2026212 PMAQI
28th Jul 2026233 PMAQI
28th Jul 2026174 PMAQI
28th Jul 2026145 PMAQI
28th Jul 2026176 PMAQI
28th Jul 2026217 PMAQI
28th Jul 2026238 PMAQI
28th Jul 2026219 PMAQI
28th Jul 20263010 PMAQI
28th Jul 20263011 PMAQI
29th Jul 20263212 AMAQI
29th Jul 2026101 AMAQI
29th Jul 2026142 AMAQI
29th Jul 2026103 AMAQI
29th Jul 202684 AMAQI

23°C21/25°C

29th Jul 2026105 AMAQI
29th Jul 2026176 AMAQI
29th Jul 2026257 AMAQI
29th Jul 2026258 AMAQI
29th Jul 2026219 AMAQI
29th Jul 20262110 AMAQI
29th Jul 20262511 AMAQI
29th Jul 20262112 PMAQI
29th Jul 2026211 PMAQI
29th Jul 2026212 PMAQI
29th Jul 2026193 PMAQI
29th Jul 2026104 PMAQI
29th Jul 2026195 PMAQI
29th Jul 2026126 PMAQI
29th Jul 2026217 PMAQI
29th Jul 2026238 PMAQI
29th Jul 2026469 PMAQI
29th Jul 20265610 PMAQI
29th Jul 20262911 PMAQI
30th Jul 20262112 AMAQI
30th Jul 2026191 AMAQI
30th Jul 2026212 AMAQI
30th Jul 2026193 AMAQI
30th Jul 2026174 AMAQI

22°C21/24°C

30th Jul 2026175 AMAQI
30th Jul 2026176 AMAQI
30th Jul 202687 AMAQI
30th Jul 2026178 AMAQI
30th Jul 2026219 AMAQI
30th Jul 20261710 AMAQI
30th Jul 2026811 AMAQI
30th Jul 2026812 PMAQI
30th Jul 2026121 PMAQI
30th Jul 2026172 PMAQI
30th Jul 2026143 PMAQI
30th Jul 2026174 PMAQI
30th Jul 2026125 PMAQI
30th Jul 202686 PMAQI
30th Jul 2026107 PMAQI
30th Jul 2026218 PMAQI
30th Jul 2026279 PMAQI
30th Jul 20262110 PMAQI
30th Jul 20262911 PMAQI
31st Jul 2026812 AMAQI
31st Jul 202681 AMAQI
31st Jul 202682 AMAQI
31st Jul 202683 AMAQI
31st Jul 202684 AMAQI

23°C21/27°C

31st Jul 202685 AMAQI
31st Jul 2026216 AMAQI
31st Jul 2026337 AMAQI
31st Jul 2026448 AMAQI
31st Jul 2026469 AMAQI
31st Jul 2026810 AMAQI
31st Jul 20261211 AMAQI
31st Jul 20262312 PMAQI
31st Jul 2026161 PMAQI
31st Jul 2026122 PMAQI
31st Jul 2026123 PMAQI
31st Jul 2026174 PMAQI
31st Jul 2026165 PMAQI
31st Jul 2026126 PMAQI
31st Jul 2026177 PMAQI
31st Jul 2026178 PMAQI
31st Jul 2026219 PMAQI
31st Jul 20262110 PMAQI
31st Jul 20262511 PMAQI
1st Aug 20262512 AMAQI
1st Aug 202681 AMAQI
1st Aug 2026122 AMAQI
1st Aug 2026103 AMAQI
1st Aug 202684 AMAQI

23°C21/27°C

1st Aug 202685 AMAQI
1st Aug 202686 AMAQI
1st Aug 2026107 AMAQI
1st Aug 2026128 AMAQI
1st Aug 2026179 AMAQI
1st Aug 20261710 AMAQI
1st Aug 20261711 AMAQI
1st Aug 20261912 PMAQI
1st Aug 2026231 PMAQI
1st Aug 2026102 PMAQI
1st Aug 2026213 PMAQI
1st Aug 2026274 PMAQI
1st Aug 2026565 PMAQI
1st Aug 2026446 PMAQI
1st Aug 2026237 PMAQI
1st Aug 2026528 PMAQI
1st Aug 2026559 PMAQI
1st Aug 20265410 PMAQI
1st Aug 20263311 PMAQI
2nd Aug 20262712 AMAQI
2nd Aug 2026171 AMAQI
2nd Aug 2026122 AMAQI
2nd Aug 2026123 AMAQI
2nd Aug 2026144 AMAQI

23°C21/26°C

2nd Aug 2026125 AMAQI
2nd Aug 202686 AMAQI
2nd Aug 2026127 AMAQI
2nd Aug 2026128 AMAQI
2nd Aug 2026219 AMAQI
2nd Aug 20261910 AMAQI
2nd Aug 20261711 AMAQI
2nd Aug 20261612 PMAQI
2nd Aug 2026171 PMAQI
2nd Aug 2026172 PMAQI
2nd Aug 2026173 PMAQI
2nd Aug 2026174 PMAQI
2nd Aug 2026175 PMAQI
2nd Aug 2026176 PMAQI
2nd Aug 2026177 PMAQI
2nd Aug 2026238 PMAQI
2nd Aug 2026239 PMAQI
2nd Aug 20261910 PMAQI
2nd Aug 20261711 PMAQI
3rd Aug 20261212 AMAQI
3rd Aug 2026121 AMAQI
3rd Aug 2026102 AMAQI
3rd Aug 202683 AMAQI
3rd Aug 202684 AMAQI

23°C21/26°C

3rd Aug 202685 AMAQI
3rd Aug 2026126 AMAQI
3rd Aug 2026147 AMAQI
3rd Aug 2026148 AMAQI
3rd Aug 2026149 AMAQI
3rd Aug 20261910 AMAQI
3rd Aug 20261611 AMAQI
3rd Aug 20261712 PMAQI
3rd Aug 2026171 PMAQI
3rd Aug 2026172 PMAQI
3rd Aug 2026123 PMAQI
3rd Aug 2026144 PMAQI
3rd Aug 2026125 PMAQI
3rd Aug 202686 PMAQI
3rd Aug 2026127 PMAQI
3rd Aug 2026148 PMAQI
3rd Aug 2026299 PMAQI
3rd Aug 20262710 PMAQI
3rd Aug 2026811 PMAQI
4th Aug 2026812 AMAQI
4th Aug 202681 AMAQI
4th Aug 202682 AMAQI
4th Aug 202683 AMAQI
4th Aug 202684 AMAQI

23°C22/25°C

4th Aug 202685 AMAQI
4th Aug 202686 AMAQI
4th Aug 202687 AMAQI
4th Aug 2026148 AMAQI
4th Aug 2026279 AMAQI
4th Aug 20265210 AMAQI
4th Aug 20263311 AMAQI
4th Aug 20261412 PMAQI
4th Aug 2026271 PMAQI
4th Aug 2026192 PMAQI
4th Aug 2026123 PMAQI
4th Aug 2026174 PMAQI
4th Aug 2026215 PMAQI
4th Aug 2026176 PMAQI
4th Aug 2026237 PMAQI
4th Aug 2026528 PMAQI
4th Aug 2026469 PMAQI
4th Aug 20261710 PMAQI
4th Aug 20261211 PMAQI
5th Aug 2026812 AMAQI
5th Aug 202681 AMAQI
5th Aug 202682 AMAQI
5th Aug 202683 AMAQI
5th Aug 202684 AMAQI

23°C22/25°C

5th Aug 202685 AMAQI
5th Aug 2026186 AMAQI
5th Aug 2026697 AMAQI
5th Aug 2026258 AMAQI
5th Aug 2026219 AMAQI
5th Aug 20262110 AMAQI
5th Aug 20261411 AMAQI
5th Aug 20261212 PMAQI
5th Aug 2026141 PMAQI
5th Aug 202682 PMAQI
5th Aug 2026143 PMAQI
5th Aug 202684 PMAQI
5th Aug 2026125 PMAQI
5th Aug 2026176 PMAQI
5th Aug 2026257 PMAQI
5th Aug 2026298 PMAQI
5th Aug 2026199 PMAQI
5th Aug 20262510 PMAQI
5th Aug 20262111 PMAQI
6th Aug 20262312 AMAQI
6th Aug 2026121 AMAQI
6th Aug 2026102 AMAQI
6th Aug 202683 AMAQI
6th Aug 2026124 AMAQI

22°C21/24°C

6th Aug 2026145 AMAQI
6th Aug 2026256 AMAQI
6th Aug 2026387 AMAQI
6th Aug 2026368 AMAQI
6th Aug 2026299 AMAQI
6th Aug 20265310 AMAQI
6th Aug 20262311 AMAQI
6th Aug 20264812 PMAQI
6th Aug 2026141 PMAQI
6th Aug 2026172 PMAQI
6th Aug 2026213 PMAQI
6th Aug 2026254 PMAQI
6th Aug 2026465 PMAQI
6th Aug 2026536 PMAQI
6th Aug 2026317 PMAQI
6th Aug 2026388 PMAQI
6th Aug 2026129 PMAQI
6th Aug 20261710 PMAQI
6th Aug 20261211 PMAQI
7th Aug 20263312 AMAQI
7th Aug 202681 AMAQI
7th Aug 202682 AMAQI
7th Aug 202683 AMAQI
7th Aug 202684 AMAQI

22°C21/25°C

7th Aug 202685 AMAQI
7th Aug 2026106 AMAQI
7th Aug 202687 AMAQI
7th Aug 2026218 AMAQI
7th Aug 2026259 AMAQI
7th Aug 20262510 AMAQI
7th Aug 20262111 AMAQI
7th Aug 20262112 PMAQI
7th Aug 2026271 PMAQI
7th Aug 2026232 PMAQI
7th Aug 2026213 PMAQI
7th Aug 2026294 PMAQI
7th Aug 2026215 PMAQI
7th Aug 2026216 PMAQI
7th Aug 2026497 PMAQI
7th Aug 2026198 PMAQI
7th Aug 2026129 PMAQI
7th Aug 20261210 PMAQI
7th Aug 20261411 PMAQI
8th Aug 20261212 AMAQI
8th Aug 2026141 AMAQI
8th Aug 2026192 AMAQI
8th Aug 2026173 AMAQI
8th Aug 2026194 AMAQI

22°C21/26°C

8th Aug 2026125 AMAQI
8th Aug 2026196 AMAQI
8th Aug 2026257 AMAQI
8th Aug 2026468 AMAQI
8th Aug 2026219 AMAQI
8th Aug 20261210 AMAQI
8th Aug 2026811 AMAQI
8th Aug 20261212 PMAQI
8th Aug 2026171 PMAQI
8th Aug 2026192 PMAQI
8th Aug 2026253 PMAQI
8th Aug 2026234 PMAQI
8th Aug 2026255 PMAQI
8th Aug 2026196 PMAQI
8th Aug 2026197 PMAQI
8th Aug 2026218 PMAQI
8th Aug 2026299 PMAQI
8th Aug 20261710 PMAQI
8th Aug 20261711 PMAQI
9th Aug 20261412 AMAQI
9th Aug 2026191 AMAQI
9th Aug 2026122 AMAQI
9th Aug 2026173 AMAQI
9th Aug 2026194 AMAQI

22°C21/24°C

9th Aug 2026195 AMAQI
9th Aug 2026216 AMAQI
9th Aug 2026277 AMAQI
9th Aug 2026408 AMAQI
9th Aug 2026179 AMAQI
9th Aug 20261910 AMAQI
9th Aug 20261411 AMAQI
9th Aug 20261712 PMAQI
9th Aug 2026211 PMAQI
9th Aug 2026122 PMAQI
9th Aug 2026143 PMAQI
9th Aug 202684 PMAQI
9th Aug 2026125 PMAQI
9th Aug 202686 PMAQI
9th Aug 2026147 PMAQI
9th Aug 2026218 PMAQI
9th Aug 2026179 PMAQI
9th Aug 20261710 PMAQI
9th Aug 20261711 PMAQI
10th Aug 20261212 AMAQI
10th Aug 2026171 AMAQI
10th Aug 2026142 AMAQI
10th Aug 202683 AMAQI
10th Aug 2026194 AMAQI

23°C21/26°C

10th Aug 2026175 AMAQI
10th Aug 2026196 AMAQI
10th Aug 2026127 AMAQI
10th Aug 2026238 AMAQI
10th Aug 2026259 AMAQI
10th Aug 20261410 AMAQI
10th Aug 20261211 AMAQI
10th Aug 20261712 PMAQI
10th Aug 2026161 PMAQI
10th Aug 2026212 PMAQI
10th Aug 2026123 PMAQI
10th Aug 2026104 PMAQI
10th Aug 2026145 PMAQI
10th Aug 2026176 PMAQI
10th Aug 2026217 PMAQI
10th Aug 2026448 PMAQI
10th Aug 2026679 PMAQI
10th Aug 20265610 PMAQI
10th Aug 20265611 PMAQI
11th Aug 20265712 AMAQI
11th Aug 2026591 AMAQI
11th Aug 2026572 AMAQI
11th Aug 2026563 AMAQI
11th Aug 2026584 AMAQI

23°C22/26°C

11th Aug 2026335 AMAQI
11th Aug 2026146 AMAQI
11th Aug 2026127 AMAQI
11th Aug 2026238 AMAQI
11th Aug 2026219 AMAQI
11th Aug 20262910 AMAQI
11th Aug 20264211 AMAQI
11th Aug 20261412 PMAQI
11th Aug 2026311 PMAQI
11th Aug 2026332 PMAQI
11th Aug 2026573 PMAQI
11th Aug 2026194 PMAQI
11th Aug 2026125 PMAQI
11th Aug 2026216 PMAQI
11th Aug 2026217 PMAQI
11th Aug 2026198 PMAQI
11th Aug 2026199 PMAQI
11th Aug 20261410 PMAQI
11th Aug 20261711 PMAQI
12th Aug 20261712 AMAQI
12th Aug 2026171 AMAQI
12th Aug 2026122 AMAQI
12th Aug 2026173 AMAQI
12th Aug 2026144 AMAQI

22°C22/23°C

12th Aug 2026195 AMAQI
12th Aug 2026326 AMAQI
12th Aug 202687 AMAQI
12th Aug 2026298 AMAQI
12th Aug 2026239 AMAQI
12th Aug 20261210 AMAQI
12th Aug 20261211 AMAQI
12th Aug 20261212 PMAQI
12th Aug 2026121 PMAQI
12th Aug 2026122 PMAQI
12th Aug 2026123 PMAQI
12th Aug 2026124 PMAQI
12th Aug 2026125 PMAQI
12th Aug 2026176 PMAQI
12th Aug 2026217 PMAQI
12th Aug 2026608 PMAQI
12th Aug 2026149 PMAQI
12th Aug 20261210 PMAQI
12th Aug 20261211 PMAQI
13th Aug 20261712 AMAQI
13th Aug 2026171 AMAQI
13th Aug 2026142 AMAQI
13th Aug 2026193 AMAQI
13th Aug 2026144 AMAQI

22°C21/24°C

13th Aug 2026315 AMAQI
13th Aug 2026236 AMAQI
13th Aug 2026337 AMAQI
13th Aug 2026538 AMAQI
13th Aug 2026509 AMAQI
13th Aug 20262510 AMAQI
13th Aug 20262511 AMAQI
13th Aug 20262312 PMAQI
13th Aug 2026171 PMAQI
13th Aug 2026142 PMAQI
13th Aug 202683 PMAQI
13th Aug 202684 PMAQI
13th Aug 202685 PMAQI
13th Aug 202686 PMAQI
13th Aug 2026127 PMAQI
13th Aug 2026148 PMAQI
13th Aug 2026219 PMAQI
13th Aug 20261210 PMAQI
13th Aug 20261411 PMAQI
14th Aug 20261212 AMAQI
14th Aug 2026121 AMAQI
14th Aug 2026122 AMAQI
14th Aug 2026123 AMAQI
14th Aug 202684 AMAQI

24°C20/29°C

14th Aug 2026145 AMAQI
14th Aug 2026146 AMAQI
14th Aug 2026257 AMAQI
14th Aug 2026338 AMAQI
14th Aug 2026339 AMAQI
14th Aug 20265510 AMAQI
14th Aug 20263311 AMAQI
14th Aug 20262112 PMAQI
14th Aug 2026211 PMAQI
14th Aug 2026122 PMAQI
14th Aug 2026123 PMAQI
14th Aug 202684 PMAQI
14th Aug 202685 PMAQI
14th Aug 202686 PMAQI
14th Aug 2026197 PMAQI
14th Aug 2026388 PMAQI
14th Aug 2026549 PMAQI
14th Aug 20264410 PMAQI
14th Aug 20262111 PMAQI
15th Aug 20261412 AMAQI
15th Aug 2026231 AMAQI
15th Aug 2026122 AMAQI
15th Aug 2026173 AMAQI
15th Aug 2026254 AMAQI

23°C21/26°C

15th Aug 2026125 AMAQI
5 AM
15th Aug 202686 AMAQI
15th Aug 2026197 AMAQI
15th Aug 2026408 AMAQI
15th Aug 2026599 AMAQI
15th Aug 20265910 AMAQI
15th Aug 20262511 AMAQI
11 AM
15th Aug 20263312 PMAQI
15th Aug 2026251 PMAQI
15th Aug 2026172 PMAQI
15th Aug 2026123 PMAQI
15th Aug 2026124 PMAQI
15th Aug 2026175 PMAQI
15th Aug 2026216 PMAQI
6 PM
15th Aug 2026217 PMAQI
15th Aug 2026318 PMAQI
15th Aug 2026199 PMAQI
15th Aug 2026810 PMAQI
15th Aug 20261011 PMAQI
11 PM
4 AM

23°C21/28°C

Day time
Avg. Highest Time
8 AM

37AQI

1 hours / Day
30 hours / Month
Avg. Lowest Time
5 AM

21AQI

1 hours / Day
30 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 8 AM to 8 AM (Avg. 37), while the lowest AQI was between 5 AM to 5 AM (Avg. 21).
Night time
Avg. Highest Time
8 PM - 9 PM

34AQI

2 hours / Day
60 hours / Month
Avg. Lowest Time
1 AM

21AQI

1 hours / Day
30 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 8 PM to 9 PM (Avg. 34), while the lowest AQI was between 1 AM to 1 AM (Avg. 21).

2026 Days Vs Air Quality

Rom Yen, Chiang Kham, Phayao, Thailand

2026

38%

86

35%

80

16%

36

11%

25

Total number of days with different AQI categories in last 227 days in 2026 (138 days remaining)

Good
86 Days
Moderate
80 Days
Poor
36 Days
Unhealthy
25 Days
Severe
0 Days
Hazardous
0 Days

Under WHO’s Safe Air Quality Limits: 38%

Health Risk Level:

High

In 2026, 38% of 227 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

Rom Yen, Chiang Kham, Phayao, 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
92AQI (US)
2nd January 2026
78AQI (US)
3rd January 2026
70AQI (US)
4th January 2026
62AQI (US)
5th January 2026
62AQI (US)
6th January 2026
67AQI (US)
7th January 2026
66AQI (US)
8th January 2026
66AQI (US)
9th January 2026
67AQI (US)
10th January 2026
73AQI (US)
11th January 2026
79AQI (US)
12th January 2026
92AQI (US)
13th January 2026
90AQI (US)
14th January 2026
87AQI (US)
15th January 2026
89AQI (US)
16th January 2026
90AQI (US)
17th January 2026
89AQI (US)
18th January 2026
80AQI (US)
19th January 2026
81AQI (US)
20th January 2026
79AQI (US)
21st January 2026
78AQI (US)
22nd January 2026
79AQI (US)
23rd January 2026
82AQI (US)
24th January 2026
86AQI (US)
25th January 2026
88AQI (US)
26th January 2026
95AQI (US)
27th January 2026
96AQI (US)
28th January 2026
101AQI (US)
29th January 2026
106AQI (US)
30th January 2026
113AQI (US)
31st January 2026
111AQI (US)
1st February 2026
109AQI (US)
2nd February 2026
93AQI (US)
3rd February 2026
83AQI (US)
4th February 2026
72AQI (US)
5th February 2026
91AQI (US)
6th February 2026
97AQI (US)
7th February 2026
104AQI (US)
8th February 2026
90AQI (US)
9th February 2026
73AQI (US)
10th February 2026
75AQI (US)
11th February 2026
85AQI (US)
12th February 2026
80AQI (US)
13th February 2026
79AQI (US)
14th February 2026
104AQI (US)
15th February 2026
100AQI (US)
16th February 2026
105AQI (US)
17th February 2026
98AQI (US)
18th February 2026
90AQI (US)
19th February 2026
64AQI (US)
20th February 2026
51AQI (US)
21st February 2026
89AQI (US)
22nd February 2026
107AQI (US)
23rd February 2026
112AQI (US)
24th February 2026
101AQI (US)
25th February 2026
66AQI (US)
26th February 2026
31AQI (US)
27th February 2026
53AQI (US)
28th February 2026
83AQI (US)
1st March 2026
101AQI (US)
2nd March 2026
115AQI (US)
3rd March 2026
124AQI (US)
4th March 2026
134AQI (US)
5th March 2026
128AQI (US)
6th March 2026
97AQI (US)
7th March 2026
96AQI (US)
8th March 2026
112AQI (US)
9th March 2026
112AQI (US)
10th March 2026
74AQI (US)
11th March 2026
82AQI (US)
12th March 2026
79AQI (US)
13th March 2026
58AQI (US)
14th March 2026
74AQI (US)
15th March 2026
84AQI (US)
16th March 2026
78AQI (US)
17th March 2026
82AQI (US)
18th March 2026
100AQI (US)
19th March 2026
109AQI (US)
20th March 2026
108AQI (US)
21st March 2026
119AQI (US)
22nd March 2026
114AQI (US)
23rd March 2026
126AQI (US)
24th March 2026
148AQI (US)
25th March 2026
154AQI (US)
26th March 2026
161AQI (US)
27th March 2026
166AQI (US)
28th March 2026
177AQI (US)
29th March 2026
165AQI (US)
30th March 2026
170AQI (US)
31st March 2026
168AQI (US)
1st April 2026
188AQI (US)
2nd April 2026
194AQI (US)
3rd April 2026
187AQI (US)
4th April 2026
188AQI (US)
5th April 2026
185AQI (US)
6th April 2026
177AQI (US)
7th April 2026
165AQI (US)
8th April 2026
156AQI (US)
9th April 2026
163AQI (US)
10th April 2026
153AQI (US)
11th April 2026
150AQI (US)
12th April 2026
147AQI (US)
13th April 2026
149AQI (US)
14th April 2026
166AQI (US)
15th April 2026
156AQI (US)
16th April 2026
164AQI (US)
17th April 2026
144AQI (US)
18th April 2026
163AQI (US)
19th April 2026
172AQI (US)
20th April 2026
163AQI (US)
21st April 2026
161AQI (US)
22nd April 2026
155AQI (US)
23rd April 2026
138AQI (US)
24th April 2026
139AQI (US)
25th April 2026
129AQI (US)
26th April 2026
109AQI (US)
27th April 2026
99AQI (US)
28th April 2026
87AQI (US)
29th April 2026
71AQI (US)
30th April 2026
101AQI (US)
1st May 2026
92AQI (US)
2nd May 2026
125AQI (US)
3rd May 2026
124AQI (US)
4th May 2026
114AQI (US)
5th May 2026
72AQI (US)
6th May 2026
62AQI (US)
7th May 2026
82AQI (US)
8th May 2026
31AQI (US)
9th May 2026
41AQI (US)
10th May 2026
38AQI (US)
11th May 2026
44AQI (US)
12th May 2026
34AQI (US)
13th May 2026
20AQI (US)
14th May 2026
29AQI (US)
15th May 2026
27AQI (US)
16th May 2026
91AQI (US)
17th May 2026
87AQI (US)
18th May 2026
72AQI (US)
19th May 2026
57AQI (US)
20th May 2026
68AQI (US)
21st May 2026
73AQI (US)
22nd May 2026
69AQI (US)
23rd May 2026
42AQI (US)
24th May 2026
56AQI (US)
25th May 2026
57AQI (US)
26th May 2026
41AQI (US)
27th May 2026
25AQI (US)
28th May 2026
58AQI (US)
29th May 2026
40AQI (US)
30th May 2026
15AQI (US)
31st May 2026
18AQI (US)
1st June 2026
30AQI (US)
2nd June 2026
52AQI (US)
3rd June 2026
56AQI (US)
4th June 2026
56AQI (US)
5th June 2026
33AQI (US)
6th June 2026
15AQI (US)
7th June 2026
11AQI (US)
8th June 2026
19AQI (US)
9th June 2026
25AQI (US)
10th June 2026
11AQI (US)
11th June 2026
8AQI (US)
12th June 2026
18AQI (US)
13th June 2026
19AQI (US)
14th June 2026
17AQI (US)
15th June 2026
10AQI (US)
16th June 2026
15AQI (US)
17th June 2026
10AQI (US)
18th June 2026
14AQI (US)
19th June 2026
17AQI (US)
20th June 2026
32AQI (US)
21st June 2026
16AQI (US)
22nd June 2026
15AQI (US)
23rd June 2026
24AQI (US)
24th June 2026
18AQI (US)
25th June 2026
16AQI (US)
26th June 2026
12AQI (US)
27th June 2026
19AQI (US)
28th June 2026
23AQI (US)
29th June 2026
22AQI (US)
30th June 2026
17AQI (US)
1st July 2026
20AQI (US)
2nd July 2026
19AQI (US)
3rd July 2026
19AQI (US)
4th July 2026
11AQI (US)
5th July 2026
15AQI (US)
6th July 2026
16AQI (US)
7th July 2026
26AQI (US)
8th July 2026
27AQI (US)
9th July 2026
19AQI (US)
10th July 2026
17AQI (US)
11th July 2026
19AQI (US)
12th July 2026
23AQI (US)
13th July 2026
16AQI (US)
14th July 2026
23AQI (US)
15th July 2026
18AQI (US)
16th July 2026
28AQI (US)
17th July 2026
33AQI (US)
18th July 2026
55AQI (US)
19th July 2026
64AQI (US)
20th July 2026
50AQI (US)
21st July 2026
39AQI (US)
22nd July 2026
16AQI (US)
23rd July 2026
33AQI (US)
24th July 2026
26AQI (US)
25th July 2026
36AQI (US)
26th July 2026
25AQI (US)
27th July 2026
16AQI (US)
28th July 2026
21AQI (US)
29th July 2026
22AQI (US)
30th July 2026
17AQI (US)
31st July 2026
18AQI (US)
1st August 2026
24AQI (US)
2nd August 2026
17AQI (US)
3rd August 2026
14AQI (US)
4th August 2026
19AQI (US)
5th August 2026
18AQI (US)
6th August 2026
26AQI (US)
7th August 2026
19AQI (US)
8th August 2026
19AQI (US)
9th August 2026
17AQI (US)
10th August 2026
23AQI (US)
11th August 2026
31AQI (US)
12th August 2026
18AQI (US)
13th August 2026
20AQI (US)
14th August 2026
22AQI (US)
15th August 2026
22AQI (US)
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

84AQI (US)

85AQI (US)

117AQI (US)

151AQI (US)

58AQI (US)

22AQI (US)

25AQI (US)

21AQI (US)

No. of days

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

202673AQI (US)

27
4
1
20
7
11
13
7
3
9
18
14
14
3
27
3
29
2
15
86
80
36
25

Highest AQI (US) recorded in

April

151AQI (US)

Lowest AQI (US) recorded in

August

21AQI (US)

202570AQI (US)

27
4
19
9
11
16
4
17
13
31
13
17
31
27
4
23
7
6
25
10
20
29
2
110
207
44
4

Highest AQI (US) recorded in

March

114AQI (US)

Lowest AQI (US) recorded in

September

39AQI (US)

202454AQI (US)

1
16
1
1
2
3
9
30
31
18
13
3
6
7
2
28
31
92
110

Highest AQI (US) recorded in

December

79AQI (US)

Lowest AQI (US) recorded in

July

35AQI (US)

202397AQI (US)

4
4
1
3
3
7
7
1
1
3
1
28
2
6
39
6
14

Highest AQI (US) recorded in

March

166AQI (US)

Lowest AQI (US) recorded in

September

17AQI (US)

202273AQI (US)

1
12
16
2
14
6
1
14
31
6
1

Highest AQI (US) recorded in

December

90AQI (US)

Lowest AQI (US) recorded in

November

58AQI (US)

Most & Least Polluted Years Over the Last 5 Years

Most Polluted Year Recorded
2023(Avg.)
97AQI (US)
Least Polluted Year Recorded
2024(Avg.)
54AQI (US)

Rom Yen's annual 2026 AQI (US) (73) shows an average percentage change of 3.6% (worsened AQI (US)) compared to previous years: 2022 (73), 2023 (97), 2024 (54), 2025 (70).