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Zhejiang, China

Yongchang · Air quality

Wednesday, Nov 11 · Asia/Shanghai

Yongchang air quality

US air quality index

109

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
26 µg/m³
PM2.5
30 µg/m³
PM10
32 µg/m³
Ozone
72 µg/m³
Nitrogen dioxide
15 µg/m³
Sulfur dioxide
6 µg/m³
Carbon monoxide
345 µg/m³
European AQI (separate scale)
4