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Kentucky, United States

Annville · Air quality

Tuesday, Oct 27 · America/New York

Annville air quality

US air quality index

31

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
4 µg/m³
PM2.5
9.4 µg/m³
PM10
5 µg/m³
Ozone
40.1 µg/m³
Nitrogen dioxide
9 µg/m³
Sulfur dioxide
1 µg/m³
Carbon monoxide
201 µg/m³
European AQI (separate scale)
1