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Beijing, China

Nanfaxin · Air quality

Saturday, Nov 7 · Asia/Shanghai

Nanfaxin air quality

US air quality index

139

Unhealthy for sensitive groups

US EPA scale

  1. Good0–50
  2. Moderate51–100
  3. Unhealthy for sensitive groups101–150Current category
  4. Unhealthy151–200
  5. Very unhealthy201–300
  6. 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 scale

All pollutants

PM1
47 µg/m³
PM2.5
51 µg/m³
PM10
57 µg/m³
Ozone
0 µg/m³
Nitrogen dioxide
41 µg/m³
Sulfur dioxide
6 µg/m³
Carbon monoxide
673 µg/m³
European AQI (separate scale)
5