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Piedmont, Italy

Alzano Scrivia · Air quality

Thursday, Nov 12 · Europe/Rome

Alzano Scrivia air quality

US air quality index

123

Unhealthy for sensitive groups

US EPA scale

  1. Good0–50
  2. Moderate51–100
  3. Unhealthy for sensitive groups101–150Current category
  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
30 µg/m³
PM10
31 µg/m³
Ozone
2 µg/m³
Nitrogen dioxide
33 µg/m³
Sulfur dioxide
3.3 µg/m³
Carbon monoxide
619.3 µg/m³
European AQI (separate scale)
4