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KwaZulu-Natal, South Africa

Trust Feed · Air quality

Saturday, Oct 31 · Africa/Johannesburg

Trust Feed air quality

US air quality index

39

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
10 µg/m³
PM2.5
11 µg/m³
PM10
11 µg/m³
Ozone
20 µg/m³
Nitrogen dioxide
9.7 µg/m³
Sulfur dioxide
2 µg/m³
Carbon monoxide
189.3 µg/m³
European AQI (separate scale)
1