Phoenix
 
Data courtesy of:
 

AQI Forecast - http://www.epa.gov/airnow/today/forecast_aqi_20141120_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)
49 
Good
Health Message: None
Air Quality Index (AQI)
52 
Moderate
Health Message: Unusually sensitive people should consider reducing prolonged or heavy exertion.
AQI - Pollutant Details
Particles (PM2.5)
49 
Good
Particles (PM10)
46 
Good
Ozone
38 
Good
Carbon Monoxide
14 
Good
Particles (PM2.5)
52 
Moderate
Particles (PM10)
51 
Moderate
Ozone
35 
Good
Carbon Monoxide
13 
Good
Forecast Discussion: The large trough to the east is slowly tracking away from us and we are still somewhat under a ridge, however there is a trough bearing down on us from the west. The incoming trough is what will cause temperatures to cool heading into the weekend and will also bring mostly cloudy skies. Not expecting any rain here in the valley, but up along the rim to the north will likely see a little bit of precipitation. The high temperature here yesterday was 74 degrees and the low this morning was right around 48 degrees. Temperatures will begin to cool as the trough approaches with highs on Friday and Saturday unlikely to reach into the 70's. Air quality was a little worse than expected yesterday, unfortunately the mixing in the lower atmosphere was insufficient to lift the particulates to the stronger winds aloft to clean out the air. Our best chance to clear out the air will be Friday and Saturday with the trough moving through and then concentrations will slowly increase as more stable conditions become re-established over the area. I do not expect particulate concentrations to get any higher than the lower Moderates through the forecast period. Check back on Friday for a closer look at the weekend's weather and air quality. Until then, have a good day! –R.Nicoll

Current Conditions
Air Quality Index (AQI)
observed at 15:00 MST
53
Moderate
Health Message: Unusually sensitive people should consider reducing prolonged or heavy exertion.
AQI - Pollutant Details
Particles (PM2.5) 53 Moderate

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