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Razavi Khorasan, Iran

Khvosh Havā · Air quality

Tuesday, Oct 27 · Asia/Tehran

Khvosh Havā air quality

US air quality index

81

Moderate

US EPA scale

  1. Good0–50
  2. Moderate51–100Current category
  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
16 µg/m³
PM2.5
17 µg/m³
PM10
23 µg/m³
Ozone
41.3 µg/m³
Nitrogen dioxide
45.7 µg/m³
Sulfur dioxide
16.7 µg/m³
Carbon monoxide
529.7 µg/m³
European AQI (separate scale)
4