Tehran, Iran
Tehran · Air quality
Saturday, 24 Oct · Asia/Tehran
Tehran air quality
US air quality index
120E no good for sensitive people
US EPA scale
- Good0–50
- Moderate51–100
- E no good for sensitive people101–150Current category
- E no good for health151–200
- E bad well well for health201–300
- Dangerous301–500+
A higher US AQI indicates more air pollution and greater health concern. Categories and pollutant concentration units are different measures.
Understand the EPA scaleAll pollutants
- PM1
- 39 µg/m³
- PM2.5
- 44 µg/m³
- PM10
- 55 µg/m³
- Ozone
- 7 µg/m³
- Nitrogen dioxide
- 106 µg/m³
- Sulfur dioxide
- 28 µg/m³
- Carbon monoxide
- 974 µg/m³
- European AQI (separate scale)
- 4