Phoenix
 
Data and Forecasts courtesy of:
 

 - https://files.airnowtech.org/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 Forecast - https://files.airnowtech.org/airnow/today/forecast_aqi_20191208_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.
 - https://files.airnowtech.org/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.
 - https://files.airnowtech.org/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 - https://files.airnowtech.org/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 Animation - https://files.airnowtech.org/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 Animation - https://files.airnowtech.org/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: Good (0 - 50)
Air quality is considered satisfactory, and air pollution poses little or no risk.
AQI: Moderate (51 - 100) AQI: Moderate (51 - 100)
Air quality is acceptable; however, for some pollutants there may be a moderate health concern for a very small number of people who are unusually sensitive to air pollution.
AQI: Unhealthy for Sensitive Groups (101 - 150) AQI: Unhealthy for Sensitive Groups (101 - 150)
Although general public is not likely to be affected at this AQI range, people with lung disease, older adults and children are at a greater risk from exposure to ozone, whereas persons with heart and lung disease, older adults and children are at greater risk from the presence of particles in the air.
AQI: Unhealthy (151 - 200) AQI: Unhealthy (151 - 200)
Everyone may begin to experience health effects; members of sensitive groups may experience more serious health effects.
 AQI:Very Unhealthy (201 - 300) AQI: Very Unhealthy (201 - 300)
Health alert: everyone may experience more serious health effects.
AQI: Hazardous(301 - 500) AQI: Hazardous (301 - 500)
Health warnings of emergency conditions. The entire population is more likely to be affected.
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
 
Data and Forecasts courtesy of:
Current Conditions
Data Not Available
Air Quality Forecast
Today Tomorrow
Air Quality Index (AQI)
56
Moderate
Health Message: Unusually sensitive people should consider reducing prolonged or heavy exertion.
Air Quality Index (AQI)
65
Moderate
Health Message: Unusually sensitive people should consider reducing prolonged or heavy exertion.
AQI - Pollutant Details
Ozone
36
Good
Particles (PM10)
21
Good
Particles (PM2.5)
56
Moderate
Ozone
40
Good
Particles (PM10)
34
Good
Particles (PM2.5)
65
Moderate
Forecast Discussion: [View the ADEQ Hourly Forecast for Phoenix]
Satellite imagery this morning reveals a plume of upper-atmospheric moisture extending from well off the coast of the Baja Peninsula northeastward up into Arizona. This plume is the reason for the upper-level cloud cover over the Valley this morning and thus, the fiery sunrise. Upper-level clouds are expected to hang around today and through the weekend as the plume stays in place.

Then by Sunday, a wave of low pressure from the Pacific Ocean will begin to move over the Southwest and provide the Valley with its next rain chances. The window for rain currently looks to be between Sunday morning and Monday morning, and forecast rainfall totals range from 0.10-0.25". But there is uncertainty in the exact outcome. Winds are forecast to remain light each day, slightly picking up on Sunday.

Air quality-wise, PM2.5 (smoke, soot) will be the main pollutant of interest as it will have the potential to reach the Moderate Air Quality Index (AQI) category each day through Tuesday. As typical, PM2.5 levels would be expected to be highest over the weekend with increased residential fireplace usage (especially this time of year).

However, on Sunday, any rain would help to reduce PM2.5 build-up and limit its daily AQI value. But the exact timing and amount of rainfall will determine how high PM2.5 levels reach. PM2.5 is forecast in the Moderate AQI category on Sunday to account for the possibility of less rain.

M. Graves
http://azdeq.gov/phoenix/forecast
Last Update: Friday, December 6, 2019, 9:31 AM
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