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Washington, United States

Federal Way · Air quality

Monday, Nov 2 · America/Los Angeles

Federal Way air quality

US air quality index

74

Moderate

US EPA scale

  1. Good0–50
  2. Moderate51–100Current category
  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
18.1 µg/m³
PM10
14 µg/m³
Ozone
7.1 µg/m³
Nitrogen dioxide
21.3 µg/m³
Sulfur dioxide
0.7 µg/m³
Carbon monoxide
284.3 µg/m³
European AQI (separate scale)
3