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Anhui, China

Guxi · Air quality

Friday, Oct 30 · Asia/Shanghai

Guxi air quality

US air quality index

103

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
16 µg/m³
PM2.5
18 µg/m³
PM10
21 µg/m³
Ozone
94 µg/m³
Nitrogen dioxide
1.7 µg/m³
Sulfur dioxide
3 µg/m³
Carbon monoxide
327.3 µg/m³
European AQI (separate scale)
4