Washington, United States
Roy · Air quality
Wednesday, Oct 21 · America/Los Angeles
Roy air quality
US air quality index
58Moderate
US EPA scale
- Good0–50
- Moderate51–100Current category
- Unhealthy for sensitive groups101–150
- Unhealthy151–200
- Very unhealthy201–300
- 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 scaleAll pollutants
- PM1
- 27 µg/m³
- PM2.5
- 23.3 µg/m³
- PM10
- 29 µg/m³
- Ozone
- 28.7 µg/m³
- Nitrogen dioxide
- 38.7 µg/m³
- Sulfur dioxide
- 2.7 µg/m³
- Carbon monoxide
- 408.7 µg/m³
- European AQI (separate scale)
- 2