Phoenix
 
Data courtesy of:
 

AQI Forecast - http://www.epa.gov/airnow/today/forecast_aqi_20140724_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)
77 
Moderate
Health Message: Unusually sensitive people should consider reducing prolonged or heavy exertion outdoors.
AQI - Pollutant Details
Ozone
87 
Moderate
Particles (PM10)
47 
Good
Particles (PM2.5)
30 
Good
Carbon Monoxide
Good
Ozone
77 
Moderate
Particles (PM10)
45 
Good
Particles (PM2.5)
33 
Good
Carbon Monoxide
Good
Forecast Discussion: A typical, active monsoon pattern will remain in place through next week as high pressure has finally settled over the Four Corners. Thursday is supposed to be fairly quiet across much of the state according to forecast models. Friday could see a little more activity in southwestern Maricopa County. Saturday is where the forecast models diverge. One model, the WRF-NAM, shows little to no storm activity, while the WRF-GFS shows a large outbreak sweeping through the Valley Saturday night. If this is the scenario that unfolds, we could see some dust ahead of the storms followed by significant rain. We prefer to wait another day to decide which to go with (though the GFS has done better in recent days). The highest ozone concentration occurred at North Phoenix on Wednesday. Though we had an Ozone HPA in place, we did not exceed the health standard. Concentrations are forecast to remain in the middle Moderate range through Saturday. Temperatures will "cool" a bit to 110°F Friday through the middle of next week with some humidity and daily thunderstorm teasers. It's summer. This is exactly what we would expect for the end of July in Phoenix. Check back on Friday for a closer look at the weekend's weather and air quality. Until then, have a good day! -J.Paul

Current Conditions
Air Quality Index (AQI)
observed at 14:00 MST
43
Good
Health Message: None
AQI - Pollutant Details
Particles (PM2.5) 43 Good

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