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Chiapas, Mexico

Francisco I. Madero · Air quality

Sunday, Nov 15 · America/Mexico City

Francisco I. Madero air quality

US air quality index

33

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
12 µg/m³
PM2.5
13 µg/m³
PM10
13 µg/m³
Ozone
16.3 µg/m³
Nitrogen dioxide
12.3 µg/m³
Sulfur dioxide
2.7 µg/m³
Carbon monoxide
204.3 µg/m³
European AQI (separate scale)
1