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New York, United States

Liverpool · Air quality

Friday, Oct 30 · America/New York

Liverpool air quality

US air quality index

20

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
2 µg/m³
PM2.5
3.1 µg/m³
PM10
2 µg/m³
Ozone
31.4 µg/m³
Nitrogen dioxide
3 µg/m³
Sulfur dioxide
1 µg/m³
Carbon monoxide
146 µg/m³
European AQI (separate scale)
1