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Shaanxi, China

Zhoucheng · Air quality

Saturday, Oct 31 · Asia/Shanghai

Zhoucheng air quality

US air quality index

110

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
71 µg/m³
Ozone
35 µg/m³
Nitrogen dioxide
35 µg/m³
Sulfur dioxide
14 µg/m³
Carbon monoxide
497 µg/m³
European AQI (separate scale)
4