Phoenix
 
Data courtesy of:
 

AQI Forecast - http://www.epa.gov/airnow/today/forecast_aqi_20140923_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)
87 
Moderate
Health Message: Unusually sensitive people should consider reducing prolonged or heavy exertion outdoors.
Air Quality Index (AQI)
80 
Moderate
Health Message: Unusually sensitive people should consider reducing prolonged or heavy exertion outdoors.
AQI - Pollutant Details
Ozone
87 
Moderate
Particles (PM2.5)
35 
Good
Particles (PM10)
30 
Good
Carbon Monoxide
Good
Ozone
80 
Moderate
Particles (PM2.5)
35 
Good
Particles (PM10)
31 
Good
Carbon Monoxide
Good
Forecast Discussion: An impressive moisture gradient splits Arizona at the moment and the Valley is on the dividing line. East of us over the higher terrain, deeper moisture and the threat for thunderstorms exists, while from Phoenix and points westward much drier air is present. Drier southwesterly flow is trying to push across all of the state, however, persistent lower-level winds over eastern Arizona from Mexico are keeping humidity elevated there. This moisture line could waver east-west over the next couple of days, but rain chances for our area are minimal as high-pressure begins to build overhead. In the absence of strong outflow thunderstorm winds, PM readings should hold steady in the middle Good AQI. The bigger issue is how the weather pattern is going to affect ozone concentrations. Winds speeds are going to be very light through Thursday and air, including ozone and ozone precursors, will likely be recirculating across the Valley. Some Phoenix Metro monitors are running up to eight ppb (parts per billion) higher than 24 hours ago. At the moment, ozone levels are only expected to peak in the mid to upper Moderate AQI each afternoon, with the East Valley having the greatest concentrations. Check back tomorrow for the latest. Until then, have a good day! -J.Malloy

Current Conditions
Air Quality Index (AQI)
observed at 4:00 MST
36
Good
Health Message: None
AQI - Pollutant Details
Particles (PM2.5) 36 Good
Ozone 32 Good

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Phoenix, AZ
 
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