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Jalisco, Mexico

San Mateo · Air quality

Tuesday, Oct 27 · America/Mexico City

San Mateo air quality

US air quality index

40

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
8 µg/m³
PM2.5
11 µg/m³
PM10
13 µg/m³
Ozone
50.7 µg/m³
Nitrogen dioxide
3.7 µg/m³
Sulfur dioxide
7.3 µg/m³
Carbon monoxide
135.3 µg/m³
European AQI (separate scale)
2