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Rio Grande do Sul, Brazil

Carlos Barbosa · Air quality

Saturday, Nov 14 · America/Sao Paulo

Carlos Barbosa air quality

US air quality index

42

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
8 µg/m³
PM2.5
9 µg/m³
PM10
9 µg/m³
Ozone
76 µg/m³
Nitrogen dioxide
2 µg/m³
Sulfur dioxide
1 µg/m³
Carbon monoxide
160 µg/m³
European AQI (separate scale)
2