Air Quality Rankings for Country Of Mexico 2026
Country Of Mexico has 2 cities with EPA air quality data. SONORA, Country Of Mexico has the cleanest air with a 5-year average AQI of 44. BAJA CALIFORNIA NORTE, Country Of Mexico has the highest AQI at 81.
| # | City | 5yr Avg AQI | Current AQI | Worst Pollutant | Trend | Grade |
|---|---|---|---|---|---|---|
| 1 | SONORA, Country Of Mexico | 44 | 53 | Ozone | Worsening | D |
| 2 | BAJA CALIFORNIA NORTE, Country Of Mexico | 81 | 66 | PM2.5 | Worsening | F |
Air quality data for Country Of Mexico is sourced from the EPA Air Quality System (AQS), which monitors outdoor air quality at thousands of stations nationwide.
Frequently Asked Questions
SONORA, Country Of Mexico has the best air quality in Country Of Mexico with a 5-year average AQI of 44 and a grade of D.
Country Of Mexico has 2 cities with EPA air quality monitoring data in our database, covering multiple years of AQI measurements.
The Air Quality Index (AQI) measures five major pollutants: ground-level ozone, particulate matter (PM2.5 and PM10), carbon monoxide, sulfur dioxide, and nitrogen dioxide. Lower AQI values indicate cleaner air — 0-50 is "Good," while 150+ is "Unhealthy."
Cities ranked by 5-year average AQI (lower is better). Grades factor in average AQI, trend direction, unhealthy days, and dominant pollutant.