Prevalence of High PM2.5 Levels

This map shows the percent of PM2.5 readings 35 µg/m³ (micrograms per cubic meter) and above within each hexagon. Readings of 35 µg/m³ and above are considered unhealthy, and can pose great risk to those with respiratory illnesss and the general population (US EPA standard).

Prevalence of Low PM2.5 Levels

This map shows the percent of PM2.5 readings 12 µg/m³ (micrograms per cubic meter) and below within each hexagon. Readings of 12 µg/m³ and below pose little to no risk to the general population (US EPA standard).

Average PM2.5 Levels

This map shows the average concentration of all PM2.5 data points within each hexagon. The darker the hexagon's color, the less healthy the average air quality reading in that area is.