Legend (AirQuality/AirQuality)

ADEQ Monitor Sites (0) PDEQ Monitor Sites (1) Hospitals (2) Schools (3) Tucson CO Maintenance Area (12) Ajo PM10 Maintenance Area (4) Ajo SO2 Maintenance Area (5) San Manuel SO2 Maintenance Area (6) Rillito PM10 Nonattainment Area (7) Tucson Air Planning Area (8) Pima County (9)