Delhi, India
Defence Colony · Air quality
Thursday, Nov 5 · Asia/Kolkata
Defence Colony air quality
US air quality index
222Very unhealthy
US EPA scale
- Good0–50
- Moderate51–100
- Unhealthy for sensitive groups101–150
- Unhealthy151–200
- Very unhealthy201–300Current category
- Hazardous301–500+
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
- 173 µg/m³
- PM2.5
- 203 µg/m³
- PM10
- 258 µg/m³
- Ozone
- 40.3 µg/m³
- Nitrogen dioxide
- 36 µg/m³
- Sulfur dioxide
- 26.3 µg/m³
- Carbon monoxide
- 1,148.3 µg/m³
- European AQI (separate scale)
- 6