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Anhui, China

Tianhu · Air quality

Sunday, Nov 15 · Asia/Shanghai

Tianhu air quality

US air quality index

102

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
25 µg/m³
PM2.5
27 µg/m³
PM10
31 µg/m³
Ozone
65 µg/m³
Nitrogen dioxide
7 µg/m³
Sulfur dioxide
5 µg/m³
Carbon monoxide
335 µg/m³
European AQI (separate scale)
4