Arizona Air Quality

Current air quality information from across the state. Data for multiple agencies are collected from EPA's AirNow including: Arizona Department of Environmental Quality, Gila River Indian Community Department of Environmental Quality, Maricopa County Air Quality Department, National Park Service, Pima County Department of Environmental Quality, Pinal County Air Quality Control District, and Salt River Pima-Maricopa Indian Community. All data are preliminary.

Current Concentrations Updated: 5/28/2023 - 11:30 AM

Click a value on the map to view more details for that monitor. To change pollutants use the menu within the map (available pollutants: Ozone, PM₁₀, PM_2.5, NO₂, SO₂, and CO).

Current Air Quality At A Glance Updated: 5/28/2023 - 11:30 AM

Display of the highest and lowest monitors across the state from the most recent observations. All data are preliminary.

Highest Readings

Ozone: 59 ppb at Grand Canyon NP View Monitor >
PM₁₀: 38 µg/m³ at Rillito View Monitor >
PM_2.5: 6 µg/m³ at Apache Junction FS View Monitor >
CO: 0.2 ppm at West Phoenix View Monitor >
NO₂: 16 µg/m³ at Thirty-Third View Monitor >
SO₂: 4 µg/m³ at Miami Jones Ranch View Monitor >

Lowest Readings

Ozone: 38 ppb at Fountain Hills View Monitor >
PM₁₀: 0 µg/m³ at Stanfield View Monitor >
PM_2.5: -2 µg/m³ at Green Valley View Monitor >
CO: 0.1 ppm at Phoenix Supersite View Monitor >
NO₂: 1 µg/m³ at Buckeye View Monitor >
SO₂: 0 µg/m³ at Hayden View Monitor >