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Tehran, Iran

Fīrūzābād · Air quality

Thursday, Nov 12 · Asia/Tehran

Fīrūzābād air quality

US air quality index

127

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
75 µg/m³
PM2.5
78 µg/m³
PM10
78 µg/m³
Ozone
0 µg/m³
Nitrogen dioxide
99 µg/m³
Sulfur dioxide
45 µg/m³
Carbon monoxide
2,479 µg/m³
European AQI (separate scale)
4