Phoenix
 
Data courtesy of:
 

AQI Forecast - http://www.epa.gov/airnow/today/forecast_aqi_20141218_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)
61 
Moderate
Health Message: Unusually sensitive people should consider reducing prolonged or heavy exertion.
Air Quality Index (AQI)
70 
Moderate
Health Message: Unusually sensitive people should consider reducing prolonged or heavy exertion.
AQI - Pollutant Details
Particles (PM2.5)
61 
Moderate
Ozone
36 
Good
Particles (PM10)
20 
Good
Carbon Monoxide
16 
Good
Particles (PM2.5)
70 
Moderate
Ozone
41 
Good
Carbon Monoxide
21 
Good
Particles (PM10)
20 
Good
Forecast Discussion: Early this morning, most if not all locations throughout the Valley received measurable precipitation. As of 7:30AM local time, 6-hr amounts ranged from around 0.03" to 0.08" in the Phoenix metro, Glendale, and Scottsdale areas. Sky Harbor has picked up at least 0.07". Locations to the southeast in Tempe, Mesa, Gilbert, and Chandler have generally received a little more than 0.1". These are not final totals, however, as more precipitation is expected today and possibly tomorrow morning. In light of the reality that soils will be plentifully moist for a while, dust will not be an issue and therefore, PM-10 concentrations will solidly remain in Good AQI levels Friday and beyond. By Thursday afternoon, the atmosphere will gradually begin to dry out and low-level moisture will decrease as the upper-level disturbances providing the ingredients for rain move off to the east. Friday is expected to be rain-free and have clear to mostly sunny skies thanks to a weak ridge. Increased sunlight may allow ozone levels to slightly increase, but not nearly enough to be of concern. Unfortunately, PM-2.5 likes to behave differently than PM-10, even when it rains. Several monitors have consistently reported Moderate AQI levels for PM-2.5 the past several days, including today, despite the rain. Even if rain helped to decrease PM-2.5 concentrations this morning, they were quick to rebound back into Moderate levels once it stopped. PM-2.5 levels are likely to be higher today than previously forecast. Since stagnant conditions are expected Friday, expect PM-2.5 levels to stay in the Moderate category. CO levels may also slightly increase due to the stagnant conditions, but not enough to warrant any concerns. Check back tomorrow for the latest. Until then, have a good day! -M.Graves

Current Conditions
Air Quality Index (AQI)
observed at 8:00 MST
47
Good
Health Message: None
AQI - Pollutant Details
Particles (PM2.5) 47 Good
Particles (PM10) 32 Good

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Phoenix, AZ
 
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