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California, United States

Seven Trees · Air quality

Saturday, Oct 24 · America/Los Angeles

Seven Trees air quality

US air quality index

49

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
18.6 µg/m³
PM10
12 µg/m³
Ozone
14.3 µg/m³
Nitrogen dioxide
29.3 µg/m³
Sulfur dioxide
1 µg/m³
Carbon monoxide
201 µg/m³
European AQI (separate scale)
2