Tucson
 
Data and Forecasts courtesy of:
 

 - https://files.airnowtech.org/airnow/today/cur_aqi_co_ut_az_nm.jpg Map Map Map Map Map Map Map Map Map Map Map Map Map
 
Legend: National Parks/Monuments National Parks/Monuments     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_20180815_co_ut_az_nm.jpg Map Map Map Map Map Map Map Map Map Map Map Map Map
 
Legend: National Parks/Monuments National Parks/Monuments     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_co_ut_az_nm.gif Map Map Map Map Map Map Map Map Map Map Map Map Map
 
Legend: National Parks/Monuments National Parks/Monuments     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
Pima County Environmental Quality Air Quality Information | Today's AQI (Pima County 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 19:00 MST
71
Moderate
Health Message: Unusually sensitive people should consider reducing prolonged or heavy exertion outdoors.
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 71 Moderate
Particles (PM10) 13 Good
Particles (PM2.5) 35 Good
Air Quality Forecast
Today Tomorrow
Air Quality Index (AQI)
50
Good
Health Message: None
Air Quality Index (AQI)
64
Moderate
Health Message: Unusually sensitive people should consider reducing prolonged or heavy exertion outdoors.
AQI - Pollutant Details
Ozone
50
Good
Particles (PM10)
26
Good
Ozone
64
Moderate
Particles (PM10)
34
Good
Forecast Discussion: Ozone ended up in the Good Air Quality Index (AQI) category at every ozone monitor in the Tucson area yesterday. Ozone levels were already lower in the morning from the previous day and thunderstorm clouds in the afternoon likely helped to keep ozone levels lower.

As of 8 AM this morning, clouds have taken over the skies over Tucson. Scattered showers have even moved through the area. This weather is expected to help delay ozone formation. Since ozone formation typically gets started in the morning, depending on how long the cloud cover stays around, ozone may be prevented from reaching higher levels in the afternoon. Thus, ozone has been forecast in the Good AQI category today. The morning’s cloud cover will also delay daytime heating, which should push thunderstorm formation later in the day.

Looking ahead, thunderstorms will continue to be possible each afternoon, but coverage looks to gradually decrease toward the weekend as high pressure begins to move directly overhead. It’s this movement of the high pressure that is also expected to help ozone levels increase later in the week. For now, ozone is forecast in the Moderate AQI category each day after today.

No issues with PM10 (dust) are expected, save for the possibility of local activity near the Rillito monitor.

–M. Graves
Check out the new ADEQ hourly forecast here: http://azdeq.gov/tucson/forecast
Last Update: Wednesday, August 15, 2018, 11:58 AM
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Tucson, AZ
 
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