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Chongqing, China

Huilong · Air quality

Wednesday, Nov 11 · Asia/Shanghai

Huilong air quality

US air quality index

116

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
63 µg/m³
PM2.5
67 µg/m³
PM10
69 µg/m³
Ozone
7 µg/m³
Nitrogen dioxide
50.3 µg/m³
Sulfur dioxide
7.3 µg/m³
Carbon monoxide
597.3 µg/m³
European AQI (separate scale)
4