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North Carolina, United States

Seven Lakes · Air quality

Sunday, Nov 1 · America/New York

Seven Lakes air quality

US air quality index

34

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
3.4 µg/m³
PM10
5 µg/m³
Ozone
42.4 µg/m³
Nitrogen dioxide
1 µg/m³
Sulfur dioxide
1 µg/m³
Carbon monoxide
146.3 µg/m³
European AQI (separate scale)
1