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Lombardy, Italy

Villa di Serio · Air quality

Tuesday, Nov 3 · Europe/Rome

Villa di Serio air quality

US air quality index

97

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
20 µg/m³
PM2.5
21 µg/m³
PM10
22 µg/m³
Ozone
21 µg/m³
Nitrogen dioxide
22.7 µg/m³
Sulfur dioxide
1 µg/m³
Carbon monoxide
394.7 µg/m³
European AQI (separate scale)
4