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Virginia, United States

New Castle · Air quality

Sunday, Oct 25 · America/New York

New Castle air quality

US air quality index

29

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
5 µg/m³
PM2.5
1.9 µg/m³
PM10
10 µg/m³
Ozone
37.2 µg/m³
Nitrogen dioxide
6 µg/m³
Sulfur dioxide
1 µg/m³
Carbon monoxide
165 µg/m³
European AQI (separate scale)
1