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Chongqing, China

Longhe · Air quality

Saturday, Oct 24 · Asia/Shanghai

Longhe air quality

US air quality index

95

Moderate

US EPA scale

  1. Good0–50
  2. Moderate51–100Current category
  3. Unhealthy for sensitive groups101–150
  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
14 µg/m³
PM2.5
15 µg/m³
PM10
15 µg/m³
Ozone
83.3 µg/m³
Nitrogen dioxide
6.7 µg/m³
Sulfur dioxide
7 µg/m³
Carbon monoxide
351 µg/m³
European AQI (separate scale)
4