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New York, United States

Medford · Air quality

Sunday, Nov 1 · America/New York

Medford 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
10 µg/m³
PM2.5
11.3 µg/m³
PM10
12 µg/m³
Ozone
26.3 µg/m³
Nitrogen dioxide
29.3 µg/m³
Sulfur dioxide
2.7 µg/m³
Carbon monoxide
191 µg/m³
European AQI (separate scale)
1