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Heilongjiang, China

Qunshan · Air quality

Tuesday, Nov 3 · Asia/Shanghai

Qunshan air quality

US air quality index

114

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
40 µg/m³
PM2.5
51 µg/m³
PM10
63 µg/m³
Ozone
39.7 µg/m³
Nitrogen dioxide
5.3 µg/m³
Sulfur dioxide
2.7 µg/m³
Carbon monoxide
335.7 µg/m³
European AQI (separate scale)
4