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_20200222_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
Data Not Available
Air Quality Forecast
Today Tomorrow
Air Quality Index (AQI)
37
Good
Health Message: None
Air Quality Index (AQI)
42
Good
Health Message: None
AQI - Pollutant Details
Ozone
37
Good
Particles (PM10)
15
Good
Particles (PM2.5)
30
Good
Ozone
39
Good
Particles (PM10)
19
Good
Particles (PM2.5)
42
Good
Forecast Discussion: [View the ADEQ Hourly Forecast for Phoenix]
Clouds are already on the increase, and big weather changes are coming into the forecast starting late tonight. Water vapor satellite this morning paints a great picture as to the current set-up. An area of low pressure is sitting about 450 miles off the coast of Southern California. At the same time, a larger area of subtropical moisture is streaming into Arizona from the southwest. As the low moves eastward, it will interact with the subtropical moisture and lead to a very good chance of rain across the entire state. Here in Phoenix, rain chances are expected to rise later tonight and especially Saturday morning. Rain could be heavy at times, especially with any thunderstorms that develop Saturday afternoon. By late Saturday evening, all rain chances should come to an end.

We are currently forecasting rain totals to be in the 0.50-0.75 inch range within the Valley, with higher totals in the 1-1.5 inch range for locations just north and east of the Valley. The National Weather Service has already issued a Flash Flood Watch in effect for the Phoenix valley Saturday morning through evening. Watch for running washes and remember, turn around, don't drown!

This system will also bring gusty southwest winds of 15-25mph Saturday afternoon. Not concerned about dust with these winds given the fact rain will be falling at the same time.

The storm system will quickly shift east of the region Sunday, with clearing skies and lighter winds expected as high pressure builds back into the area. A weak and dry cold front is expected to sweep through the state Monday, which will help to increase north-northeast winds Monday into Tuesday.

As for air quality, with easterly breezes today and rain tomorrow, forecasting ozone, PM10, and PM2.5 to all be in the Good AQI category through the weekend. A slow rise in PM10 and PM2.5 is expected heading into the first part of next week.

Have a great weekend, and enjoy the change in weather!

M. Pace
http://azdeq.gov/phoenix/forecast
Last Update: Friday, February 21, 2020, 9:20 AM
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