Air Quality in Country Of Mexico

Country Of Mexico earns an average Air Quality Grade of D, with a 5-year median AQI of 62 across 2 monitored areas — 21 points above the national average of 41. The grade combines four signals — 5-year median AQI, 10-year trend direction, count of unhealthy days per year, and dominant pollutant — into a single A-F score. Country Of Mexico's 2 monitored areas collectively logged 198 days at "Unhealthy for Sensitive Groups" or worse over the last five years.

Country Of Mexico is bucking the national trend of broad improvement: 2 of 2 monitored areas are showing measurably worse air over the past decade, more than the 0 that are improving. Across the western U.S. that pattern usually traces back to expanding wildfire smoke exposure; elsewhere it can reflect rising local emissions from population or freight growth.

The dominant pollutant across 1 of 2 Country Of Mexico areas is Fine Particulate Matter (PM2.5). PM2.5 (fine particulate matter) is most often driven by combustion sources — vehicle exhaust, industrial emissions, residential wood burning, and increasingly wildfire smoke. It penetrates deep into lung tissue and the bloodstream and is the air pollutant most strongly linked to long-term health impacts. Other monitored areas in the state report Ground-Level Ozone (1) as their dominant pollutant.

Within Country Of Mexico, the gap between best and worst is meaningful: SONORA, Country Of Mexico tops the state with a Grade D and 5-year median AQI of 44, while BAJA CALIFORNIA NORTE, Country Of Mexico sits at the bottom with a Grade F and 5-year median AQI of 81. Local terrain, prevailing winds, and proximity to industrial or wildfire emission sources drive most of that within-state variation.