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Lazio, Italy

Rocca Santo Stefano · Air quality

Friday, Oct 30 · Europe/Rome

Rocca Santo Stefano air quality

US air quality index

46

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
14 µg/m³
PM2.5
16 µg/m³
PM10
17 µg/m³
Ozone
20.7 µg/m³
Nitrogen dioxide
10.7 µg/m³
Sulfur dioxide
0 µg/m³
Carbon monoxide
242 µg/m³
European AQI (separate scale)
2