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Hubei, China

Xiyang · Air quality

Wednesday, Nov 4 · Asia/Shanghai

Xiyang air quality

US air quality index

111

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
22 µg/m³
PM2.5
27 µg/m³
PM10
34 µg/m³
Ozone
21.3 µg/m³
Nitrogen dioxide
23.7 µg/m³
Sulfur dioxide
5 µg/m³
Carbon monoxide
489 µg/m³
European AQI (separate scale)
4