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Rio Grande do Sul, Brazil

Igrejinha · Air quality

Sunday, Nov 15 · America/Sao Paulo

Igrejinha air quality

US air quality index

34

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
9 µg/m³
PM2.5
10 µg/m³
PM10
10 µg/m³
Ozone
22 µg/m³
Nitrogen dioxide
7 µg/m³
Sulfur dioxide
1 µg/m³
Carbon monoxide
172 µg/m³
European AQI (separate scale)
1