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Ibb Governorate, Yemen

Al ‘Udayn · Air quality

Thursday, Nov 5 · Asia/Aden

Al ‘Udayn air quality

US air quality index

78

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
27 µg/m³
PM10
91 µg/m³
Ozone
59.3 µg/m³
Nitrogen dioxide
2 µg/m³
Sulfur dioxide
1.7 µg/m³
Carbon monoxide
148.7 µg/m³
European AQI (separate scale)
4