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Anhui, China

Shiyang · Air quality

Sunday, Nov 1 · Asia/Shanghai

Shiyang 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
28 µg/m³
PM10
28 µg/m³
Ozone
30 µg/m³
Nitrogen dioxide
23 µg/m³
Sulfur dioxide
3 µg/m³
Carbon monoxide
697 µg/m³
European AQI (separate scale)
4