Phoenix
 
Data courtesy of:
 

AQI Forecast - http://www.epa.gov/airnow/today/forecast_aqi_20150227_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)
45 
Good
Health Message: None
Air Quality Index (AQI)
45 
Good
Health Message: None
AQI - Pollutant Details
Ozone
45 
Good
Particles (PM2.5)
42 
Good
Particles (PM10)
32 
Good
Carbon Monoxide
10 
Good
Particles (PM10)
45 
Good
Particles (PM2.5)
42 
Good
Ozone
32 
Good
Carbon Monoxide
Good
Forecast Discussion: A cool, cloudy, and wet weekend is in store for the Valley as an upper-level trough develops over the Pacific Northwest and slides down the west coast through Sunday. This system will induce a low-level circulation over the Great Basin region and draw Pacific moisture northward into Arizona beginning around late Friday into Saturday morning. It is this moisture that will pave the way for cloudiness and precipitation in the Valley. The model consensus lately is pushing back the bulk of the expected precipitation into Sunday and Monday, particularly Monday. Saturday will still have small chances for rain throughout the day, but chances increase on Sunday and peak on Monday. The estimated total precipitation for the next few days is around a half inch, with higher amounts possible in the foothills. Saturday is still projected to see the highest wind speeds, which will range from 10-15 mph easily, with speeds approaching 20 mph and higher gusts certainly possible. Winds will be out of the southwest. Sunday will see some breeziness in the afternoon as well. Still confident that the upper Good range is appropriate upper limit for PM-10 on Saturday considering that windy conditions may precede precipitation. So, cannot rule out the possibility for localized pockets of dust on Saturday. However, expected precipitation on Sunday will put a stamp on PM-10 levels. Additionally, strong, upper-level winds will support excellent ventilation each day through Sunday, preventing PM-2.5 from reaching into the Moderate AQI category; rain will help reduce PM-2.5's potential as well. Ozone concentrations will also be down due to cloud cover and cooler temperatures. No issues with carbon monoxide are foreseen either. Overall, this system is expected to reinforce good air quality in the Phoenix area over the weekend. Check back on Sunday for a look ahead at next week's weather and air quality. Until then, have a great weekend! -M.Graves

Current Conditions
Air Quality Index (AQI)
observed at 18:00 MST
40
Good
Health Message: None
AQI - Pollutant Details
Particles (PM10) 40 Good
Particles (PM2.5) 25 Good

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Phoenix, AZ
 
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