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Colorado, United States

Orchard City · Air quality

Monday, Nov 9 · America/Denver

Orchard City air quality

US air quality index

42

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
19 µg/m³
PM2.5
1.9 µg/m³
PM10
23 µg/m³
Ozone
19.2 µg/m³
Nitrogen dioxide
4.7 µg/m³
Sulfur dioxide
0 µg/m³
Carbon monoxide
169.7 µg/m³
European AQI (separate scale)
1