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Lazio, Italy

Montalto di Castro · Air quality

Friday, Nov 13 · Europe/Rome

Montalto di Castro air quality

US air quality index

52

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
2 µg/m³
PM2.5
4 µg/m³
PM10
6 µg/m³
Ozone
55.3 µg/m³
Nitrogen dioxide
1 µg/m³
Sulfur dioxide
0 µg/m³
Carbon monoxide
102.7 µg/m³
European AQI (separate scale)
2