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Rio Grande do Norte, Brazil

Rafael Fernandes · Air quality

Sunday, Nov 15 · America/Fortaleza

Rafael Fernandes air quality

US air quality index

24

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
1 µg/m³
PM2.5
6 µg/m³
PM10
9 µg/m³
Ozone
34 µg/m³
Nitrogen dioxide
1 µg/m³
Sulfur dioxide
0 µg/m³
Carbon monoxide
92 µg/m³
European AQI (separate scale)
1