Regional Daily Air Quality


" All polltant concentrations are daily average (10 a.m. yesterday - 9 a.m. today).
AQI is based on the 24 hours running average, calculated at 09.00 hrs today."

20-Nov-09
SiteSO2NO2COOzonePM10AQI
Ayutthaya2.020.00.531.0 35.0  53.0
Chacherngsao2.04.00.738.0 30.0  52.0
Chiang Mai0.08.00.626.0 36.5  46.0
Chiangrai0.820.0 33.8  42.0
Chon Buri4.015.00.328.0 22.0  50.0
Hatyai2.06.00.331.0 14.1  37.0
Khon Kaen2.020.01.022.0 30.8  39.0
Lampang0.02.015.0 33.5  42.0
Lumpoon1.02.00.523.0 30.3  39.0
Maehongson0.411.0 30.4  38.0
Nakorn Sawan2.08.00.931.0 39.8  50.0
Narativas0.3 19.1  24.0
Nhan0.04.00.412.0 32.6  41.0
Nonthaburi8.021.00.631.0 48.0  69.0
Pathum Thani3.019.00.818.0 42.3  51.0
Phuket0.09.00.429.0 19.0  40.0
Ratcha Buri8.014.00.938.0 57.8  61.0
Rayong1.06.00.446.0 19.2  58.0
Samut Prakarn4.022.00.623.0 47.0  68.0
Samut Sakorn18.030.01.017.0 37.2  57.0
Sara Buri1.021.00.721.0 69.2  68.0
Uparaj Collage (Chiangmai 36T)1.015.00.918.0 38.5  48.0
Yala0.7 21.3  27.0
Standard 120 * * * 120 100

Note
SO2 units : ppb (1/1,000,000,000)
NO2 units : ppb (1/1,000,000,000)
CO units : ppm, 1/1,000,000
Ozone units : ppb, 1/1,000,000,000
PM10 units : µg/m3

 Pollutants are 1 hour averages except noted, and PM10 is 24 hour average.
 PM10 : particulate matter (dust) <10 microns (raw data)
 AQI : Air Quality Index (AQI) should not exceed 100
     * : 24 hour average of ambient standard value not available.

Monthly and Annual Report on Ambient Air Quality in Thailand can be obtain from www.aqnis.pcd.go.th


Bangkok Air Quality Data
Last Modified: 08-Jun-09 at 11:18 AM