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New York, United States

Richmond Hill · Air quality

Sunday, Nov 8 · America/New York

Richmond Hill air quality

US air quality index

19

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
11 µg/m³
PM2.5
6.2 µg/m³
PM10
12 µg/m³
Ozone
24.2 µg/m³
Nitrogen dioxide
33 µg/m³
Sulfur dioxide
2 µg/m³
Carbon monoxide
189 µg/m³
European AQI (separate scale)
1