AirNow logo

This is not the current AirNow website. To navigate to the current AirNow website, please go to airnow.gov. This website is historical material reflecting the AirNow website as it existed on April 15, 2020. Links to external websites and some internal pages may not work.

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_20200527_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 8:00 MST
90
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 48 Good
Particles (PM10) 90 Moderate
Particles (PM2.5) 51 Moderate
Air Quality Forecast
Today Tomorrow
Air Quality Index (AQI)
80
Moderate
Health Message: Unusually sensitive people should consider reducing 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
80
Moderate
Particles (PM10)
47
Good
Particles (PM2.5)
30
Good
Ozone
77
Moderate
Particles (PM10)
45
Good
Particles (PM2.5)
30
Good
Forecast Discussion: [View the ADEQ Hourly Forecast for Phoenix]
This week, the main weather story will clearly be warming temperatures. Today, high temperatures in Phoenix will "only" reach about 103°F. Then by tomorrow, temperatures will climb into the 105-110°F. But Friday looks to be the hottest day of the week--and of the year so far--peaking at 110°F. Temperatures will then drop a degree or two by Saturday. All of this is, of course, because of a persistent high pressure pattern that will camp out over Arizona through the week. Note that the National Weather Service has an Excessive Heat Warning for Phoenix area for Wednesday-Saturday.

In regards to ozone, sunny skies each day will be conducive for ozone formation in Phoenix, since ozone needs sunlight to form. The high pressure will also be favorable for local accumulation of ozone. However, stronger winds in the low levels of the atmosphere over central Arizona on Wednesday and Thursday are expected to limit ozone's overall accumulation. For now, an Ozone High Pollution Advisory (HPA) is in effect for today and another Ozone HPA is possible again on Friday. Ozone is then forecast to decrease again on Saturday.

No concerns with PM10 (dust) are anticipated this week. The only thing to note is the potential for elevated PM10levels in areas south/southwest of the Phoenix metro area due to local activity (hourly PM10 graphs reflect this).

M. Graves
http://azdeq.gov/phoenix/forecast
Last Update: Tuesday, May 26, 2020, 8:51 AM
Past Air Quality Maps and Data
Yesterday's Maps and Data
Air Quality Maps Archives (by region)

E-Mail Notification
 
Enviroflash Email
Visibility Camera
Phoenix, AZ
 
Phoenix, AZ

View Other Visibility Cameras