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Guizhou, China

Hexing · Air quality

Friday, 30 Oct · Asia/Shanghai

Hexing air quality

US air quality index

90

Moderate

US EPA scale

  1. Good0–50
  2. Moderate51–100Current category
  3. E no good for sensitive people101–150
  4. E no good for health151–200
  5. E bad well well for health201–300
  6. Dangerous301–500+

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
24 µg/m³
PM2.5
26 µg/m³
PM10
26 µg/m³
Ozone
34.7 µg/m³
Nitrogen dioxide
7.3 µg/m³
Sulfur dioxide
26.7 µg/m³
Carbon monoxide
834.3 µg/m³
European AQI (separate scale)
4