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Hunan, China

Jiuli · Air quality

Monday, Oct 26 · Asia/Shanghai

Jiuli 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
30 µg/m³
PM2.5
36 µg/m³
PM10
39 µg/m³
Ozone
37 µg/m³
Nitrogen dioxide
10 µg/m³
Sulfur dioxide
6 µg/m³
Carbon monoxide
407 µg/m³
European AQI (separate scale)
4