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Rif-dimashq, Syria

At Tall · Air quality

Saturday, Oct 31 · Asia/Damascus

At Tall air quality

US air quality index

93

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
8 µg/m³
PM2.5
29 µg/m³
PM10
165 µg/m³
Ozone
80 µg/m³
Nitrogen dioxide
6.7 µg/m³
Sulfur dioxide
29.7 µg/m³
Carbon monoxide
116.7 µg/m³
European AQI (separate scale)
5