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Hamadan Province, Iran

Qaţār Qū’ī · Air quality

Sunday, Nov 8 · Asia/Tehran

Qaţār Qū’ī air quality

US air quality index

40

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
1 µg/m³
PM2.5
1 µg/m³
PM10
4 µg/m³
Ozone
70.3 µg/m³
Nitrogen dioxide
1.3 µg/m³
Sulfur dioxide
1.3 µg/m³
Carbon monoxide
117.3 µg/m³
European AQI (separate scale)
2