US AQI
TH AQI
LOCATION COMPARISON
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7 DAYS AGO
STANDARD AQI (US)
350
300
250
200
150
100
50
0
Sep, 18
Sep, 19
Sep, 20
Sep, 21
Sep, 22
Sep, 23
Today
TOP 10 PROVINCES
STANDARD AQI (US)
BEST
WORST
1. Mae Hong Son
8
2. Phitsanulok
12
3. Chumphon
12
4. Roi Et
17
5. Nakhon Phanom
17
6. Phichit
17
7. Phra Nakhon Si Ayutthaya
21
8. Surin
21
9. Loei
21
10. Sakon Nakhon
21
FORECAST
PM 2.5 AQI (US)
September, 24 2025
350
300
250
200
150
100
50
0
0:00
6:00
12:00
18:00
Thu
Fri
Sat
DISCOVER
OUR SENSOR
OUR SENSOR
Check the real-time PM2.5, PM10, and AQI in your area with the dust sensor developed by the Faculty of Engineering, Chulalongkorn University. Track your air quality with our dashboard showing the real-time data that can calculate the Air Quality Index (AQI) in real-time format or standard formats of both Thai and US AQI.
