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New Hampshire, United States

Newmarket · Air quality

Friday, Nov 13 · America/New York

Newmarket 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
2 µg/m³
PM2.5
4.6 µg/m³
PM10
3 µg/m³
Ozone
29.9 µg/m³
Nitrogen dioxide
2.7 µg/m³
Sulfur dioxide
0.7 µg/m³
Carbon monoxide
146.7 µg/m³
European AQI (separate scale)
1