Pollutants | Suggested Level |
PM2.5 | 10 µg/m3 (Annual Average)/25 µg/m3 (24-hour Average) |
PM10 | 20 µg/m3 (Annual Average)/50 µg/m3 (24-hour Average) |
O3 | 100 µg/m3 (8-hour Average) |
NO2 | 40 µg/m3 (Annual Average)/200 µg/m3 (1-hour Average) |
SO2 | 20 µg/m3 (24-hour Average)/500 µg/m3 (10-minute Average) |