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_20180622_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: 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
Air Quality Index (AQI)
observed at 5:00 MST
52
Moderate
Health Message: Unusually sensitive people should consider reducing prolonged or heavy exertion.
Note: Values above 500 are considered Beyond the AQI. Follow recommendations for the Hazardous category. Additional information on reducing exposure to extremely high levels of particle pollution is available here.
AQI - Pollutant Details
Ozone 42 Good
Particles (PM10) 52 Moderate
Particles (PM2.5) 30 Good
Air Quality Forecast
Today Tomorrow
Air Quality Index (AQI)
101
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.
ACTION DAY
Air Quality Index (AQI)
84
Moderate
Health Message: Unusually sensitive people should consider reducing prolonged or heavy exertion outdoors.
AQI - Pollutant Details
Carbon Monoxide
8
Good
Ozone
101
Unhealthy for Sensitive Groups
Particles (PM10)
57
Moderate
Particles (PM2.5)
31
Good
Carbon Monoxide
7
Good
Ozone
84
Moderate
Particles (PM10)
52
Moderate
Particles (PM2.5)
28
Good
Forecast Discussion: Ozone rapidly increased yesterday across Phoenix, with nine monitors in the Valley exceeding the federal health standard. Two of those monitors came in with an AQI of 136, which is in the upper range of the Unhealthy for Sensitive Groups category. Today, expecting similar if not slightly higher values. We already have an Ozone High Pollution Advisory in effect for Phoenix.

Today, high pressure will be centered over southern Arizona which will result in continued warm temperatures, clear skies, and calm winds. By tomorrow, a weak storm system will brush the state to the north which will weaken the high slightly and push it southward. This set-up will also increase breezes slightly, but the recipe for ozone production will still be available, so another Ozone High Pollution Advisory has been issued for Friday although values are forecast to be lower compared to yesterday and today.

Saturday into Sunday, another slightly stronger storm system will brush the state allowing the high to shift further south. Winds will also increase, especially during the afternoon hours into the 10-15mph range. As a result, ozone values are expected to lower below watch/advisory levels. These weak systems will also result in slightly cooler temperatures.

The break from higher levels of ozone and hot temperatures will quickly come to an end Monday as high pressure will build back in from the west. This pattern will result in another period of light winds (stagnation) and clear skies which will allow ozone to rise once again. As a result, an Ozone High Pollution Advisory will be possible on Monday. Stay tuned.

–M. Pace
http://www.azdeq.gov/forecasting
Last Update: Thursday, June 21, 2018, 8:00 AM
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