Phoenix
 
Data courtesy of:
 

AQI Forecast - http://www.epa.gov/airnow/today/forecast_aqi_20140921_phoenix_az.jpg
 
Legend: Tribal Boundaries Tribal Boundaries
The tribal boundaries shown here are provided by the Bureau of Indian Affairs and are intended to be used as a general spatial reference only. They are not a formal determination of tribal boundaries by the EPA.
 - http://www.epa.gov/airnow/today/cur_aqi_phoenix_az.jpg
 
Legend: Tribal Boundaries Tribal Boundaries
The tribal boundaries shown here are provided by the Bureau of Indian Affairs and are intended to be used as a general spatial reference only. They are not a formal determination of tribal boundaries by the EPA.
AQI Animation - http://www.epa.gov/airnow/today/anim_aqi_phoenix_az.gif
 
Legend: Tribal Boundaries Tribal Boundaries
The tribal boundaries shown here are provided by the Bureau of Indian Affairs and are intended to be used as a general spatial reference only. They are not a formal determination of tribal boundaries by the EPA.
 
AQI: Good (0 - 50) AQI: Moderate (51 - 100) AQI: Unhealthy for Sensitive Groups (101 - 150) AQI: Unhealthy (151 - 200) AQI: Very Unhealthy (201 - 300) AQI: Hazardous(301 - 500) Action DayAction Day
 
Local Air Quality Resources
Maricopa County Air Quality Department | Maricopa County Dust Forecast | Today's AQI and Forecast(AZ DEQ)
 
State Air Quality Resources
ADEQ Contact Information
ADEQ Regional Haze and Visibility
American Lung Association (ALA) of Arizona
Arizona Department of Environmental Quality Air Quality Division
Clean Air Make More - Maricopa County
Air Quality Forecast
Today's High Tomorrow's High
Air Quality Index (AQI)
55 
Moderate
Health Message: Unusually sensitive people should consider reducing prolonged or heavy exertion.
Air Quality Index (AQI)
80 
Moderate
Health Message: Unusually sensitive people should consider reducing prolonged or heavy exertion outdoors.
AQI - Pollutant Details
Particles (PM10)
55 
Moderate
Ozone
51 
Moderate
Particles (PM2.5)
37 
Good
Carbon Monoxide
Good
Ozone
80 
Moderate
Particles (PM10)
33 
Good
Particles (PM2.5)
33 
Good
Carbon Monoxide
Good
Forecast Discussion: The current weather pattern has a mid-level low-pressure system sitting off the California coastline and an area of high-pressure just to our southeast. The resultant deeper southerly flow over Arizona fed higher humidity aloft yesterday that yielded a few strong thunderstorms during the afternoon over southern Maricopa County and western Pinal County. An outflow from these storms carried dust into the southeast Valley, bringing a brief period of elevated PM readings there. Other pollutants remained in the Good AQI across the Phoenix Metro. The weather pattern changes today as the low-pressure system ejects into the Great Basin. This will alter the general flow towards a drier westerly one. The environment can still produce another round of stronger thunderstorms just east of us in Gila and Pinal Counties this afternoon. Westward moving outflows could occur. Brief blowing dust in the afternoon/evening for the East Valley would be possible. High-pressure quickly gets established overhead starting tomorrow. Clear skies, light winds, above average temperatures in the low 100s, and drying at all levels of the atmosphere are expected. A spike in ozone concentrations into the mid to upper Moderate AQI is anticipated by Monday because of the enhanced atmospheric stability trapping pollutants. Check back tomorrow for more. Until then, have a good day! -J.Malloy

Current Conditions
Air Quality Index (AQI)
observed at 16:00 MST
46
Good
Health Message: None
AQI - Pollutant Details
Ozone 46 Good
Particles (PM2.5) 15 Good

Past Air Quality Maps and Data
Yesterday's Maps and Data
Air Quality Maps Archives (by region)

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