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Heilongjiang, China

Tuoyaozi · Air quality

Wednesday, Nov 11 · Asia/Shanghai

Tuoyaozi 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
35 µg/m³
PM2.5
43 µg/m³
PM10
54 µg/m³
Ozone
41.7 µg/m³
Nitrogen dioxide
11.7 µg/m³
Sulfur dioxide
8.3 µg/m³
Carbon monoxide
456.3 µg/m³
European AQI (separate scale)
4