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California, United States

Windsor · Air quality

Thursday, Oct 15 · America/Los Angeles

Windsor air quality

US air quality index

38

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
8 µg/m³
PM2.5
3.9 µg/m³
PM10
11 µg/m³
Ozone
4.5 µg/m³
Nitrogen dioxide
19 µg/m³
Sulfur dioxide
0 µg/m³
Carbon monoxide
251 µg/m³
European AQI (separate scale)
1