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Cesar Department, Colombia

San Diego · Air quality

Sunday, Nov 1 · America/Bogota

San Diego air quality

US air quality index

13

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
3 µg/m³
PM2.5
3 µg/m³
PM10
3 µg/m³
Ozone
20 µg/m³
Nitrogen dioxide
6 µg/m³
Sulfur dioxide
1 µg/m³
Carbon monoxide
176 µg/m³
European AQI (separate scale)
1