Phoenix
 
Data courtesy of:
 

AQI Forecast - http://www.epa.gov/airnow/today/forecast_aqi_20150530_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
Gila River Indian Community DEQ Air Quality Program
Air Quality Forecast
Today's High Tomorrow's High
Air Quality Index (AQI)
104 
Unhealthy for Sensitive Groups
Health Message: Active children and adults, and people with lung disease, such as asthma, should reduce 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
104 
Unhealthy for Sensitive Groups
Particles (PM10)
38 
Good
Particles (PM2.5)
27 
Good
Carbon Monoxide
Good
Ozone
77 
Moderate
Particles (PM10)
33 
Good
Particles (PM2.5)
23 
Good
Carbon Monoxide
Good
Forecast Discussion: ***Ozone High Pollution Advisory in effect today (Friday, May 29th, 2015) and now extended through tomorrow (Saturday, May 30th, 2015)*** This is becoming a busy week for ozone! Yesterday, our air quality was contending with hot, dry, and stable high-pressure. As anticipated, max ozone 8-hour averages did make a run at the federal health standard at several sites during the daytime. Today, an Ozone High Pollution Advisory is in effect because of the same weather pattern persisting (click here to learn more about ozone). Tomorrow is when the calmest conditions are expected, as the ridge axis becomes aligned north-south through Arizona. Very light winds will stretch from the surface up to around 20,000 feet, creating a challenge for local pollutants to disperse out of the Valley. This means that even though a majority of normal “work week” activities will be shutting down after today, carryover of abundant ozone precursors into a hot, mostly sunny, and stagnant Saturday is likely. Therefore, the Ozone High Pollution Advisory has been extended through Saturday, May 30th. The ridge axis shifts further east Sunday opening the door for better and deeper transport winds. Current thinking is that ozone levels drop below HPA and HW thresholds at that time. In general, other major pollutants remain in the Good AQI across the monitoring network. Be mindful of the 105°+ heat this weekend if you have to be outdoors! Check back on Sunday for a look ahead at next week's weather and air quality. Until then, have a great weekend. -J.Malloy

Current Conditions
Air Quality Index (AQI)
observed at 11:00 MST
49
Good
Health Message: None
AQI - Pollutant Details
Particles (PM10) 49 Good
Particles (PM2.5) 33 Good

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Phoenix, AZ
 
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