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Maranhão, Brazil

Igarapé Grande · Air quality

Wednesday, Nov 11 · America/Fortaleza

Igarapé Grande air quality

US air quality index

69

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
28 µg/m³
PM2.5
31 µg/m³
PM10
32 µg/m³
Ozone
30.7 µg/m³
Nitrogen dioxide
9 µg/m³
Sulfur dioxide
1 µg/m³
Carbon monoxide
297.7 µg/m³
European AQI (separate scale)
3