Thailand: Air Quality Standards

Thailand: Air Quality Standards

Overview

Thailand’s National Ambient Air Quality Standards set parameters for 8 pollutants that were deemed to be of the highest priority to protect public health (please see the full technical standards below).

Standard type
Conventional pollutant emission limits

Regulating Body
Conventional pollutant emission limits

Applicability
Nationwide

Contents

 

Categories

History

Technical Standards

National Ambient Air Quality Standards

National Ambient Air Quality Standards
Pollutant Time Period Concentration
SO2 Annual .10 mg/m3 (0.04 ppm)
24 hours .30 mg/m3 (0.12 ppm)
1 hour 780 mcg/m3 (0.3 ppm)
NO2 1 hour 0.32 mg/m3 (0.17 ppm)
Annual 0.057 mg/m3 (0.03 ppm)
PM100 Annual 0.10 mg/m3
24 hours 0.33 mg/m3
PM10 Annual 0.05mg/m3
24 hours 0.12 mg/m3
PM2.5 Annual 0.025 mg/m3
24 hours 0.05 mg/m3
O3 8 hours 0.14 mg/m3 (0.07 ppm)
1 hour 0.20 mg/m3 (0.10 ppm)
Lead (Pb) Monthly 1.5 mcg/m3
CO 8 hours 10.26 mg/m3 (9 ppm)
1 hour 34.2 mg/m3 (30 ppm)

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