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Henan, China

Neihuang · Air quality

Saturday, Nov 7 · Asia/Shanghai

Neihuang air quality

US air quality index

120

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
43 µg/m³
PM2.5
53 µg/m³
PM10
61 µg/m³
Ozone
2 µg/m³
Nitrogen dioxide
35.7 µg/m³
Sulfur dioxide
11.7 µg/m³
Carbon monoxide
658 µg/m³
European AQI (separate scale)
4