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Omran, Yemen

Al ‘Ashshah · Air quality

Saturday, Nov 7 · Asia/Aden

Al ‘Ashshah air quality

US air quality index

35

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
3 µg/m³
PM2.5
8 µg/m³
PM10
22 µg/m³
Ozone
66 µg/m³
Nitrogen dioxide
0 µg/m³
Sulfur dioxide
0 µg/m³
Carbon monoxide
122 µg/m³
European AQI (separate scale)
2