Air Quality
Moderate
Water Violations
122
Air quality in Pima County is rated moderate with a median AQI of 55 (273 days measured in 2025). 12 community water systems serve the area, with 122 recent violations in the last 5 years.
Air Quality — Pima County (2025)i
AQSThe Air Quality Index measures how clean or polluted the air is on a given day. AQI is reported at the county level. A score of 0-50 is considered good; 51-100 is moderate; above 100 may be unhealthy for sensitive groups.
Median AQI
PM2.5 Daysi
58Ozone Daysi
88Drinking Wateri
SDWISPublic water systems registered to serve this area. Community systems (CWS) provide water to residents year-round. Violations indicate a system failed to meet federal drinking water standards.
Community Systemsi
12Active Systemsi
12Recent Violationsi
122Recent Violations (Last 5 Years)
Historical Violations (Over 5 Years Ago)
MARANA DWID-HUNTER/IM