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Siem Reap, Cambodia

Chi Kraeng · Air quality

Friday, Oct 30 · Asia/Phnom Penh

Chi Kraeng air quality

US air quality index

20

Good

US EPA scale

  1. Good0–50Current category
  2. Moderate51–100
  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
4 µg/m³
PM2.5
5 µg/m³
PM10
5 µg/m³
Ozone
28 µg/m³
Nitrogen dioxide
3 µg/m³
Sulfur dioxide
0 µg/m³
Carbon monoxide
199 µg/m³
European AQI (separate scale)
1