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_20180525_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 15:00 MST
43
Good
Health Message: None
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 43 Good
Particles (PM10) 14 Good
Particles (PM2.5) 11 Good
Air Quality Forecast
Today Tomorrow
Air Quality Index (AQI)
67
Moderate
Health Message: Unusually sensitive people should consider reducing prolonged or heavy exertion outdoors.
Air Quality Index (AQI)
61
Moderate
Health Message: Unusually sensitive people should consider reducing prolonged or heavy exertion outdoors.
AQI - Pollutant Details
Ozone
67
Moderate
Particles (PM10)
46
Good
Ozone
61
Moderate
Particles (PM10)
40
Good
Forecast Discussion: Today through the weekend, a low pressure system from the Pacific Ocean will slowly move over California and the Great Basin region. As the lower part of this system approaches and passes through Arizona (today and Saturday), winds will pick up out of the west-southwest. Winds are forecast to be 10-15 mph this afternoon and increase to 15-20 mph Saturday afternoon. Then by Sunday, winds look to calm back down again; highs will also be their lowest, in the mid-90s. After Sunday, temperatures will begin to warm up again; winds are forecast to be light during the beginning of next work week.

Air quality-wise, ozone levels are expected to decrease through Saturday as the aforementioned low pressure system provides a southerly flow (prevents/reduces transport from California) and better ozone dispersion. But ozone is expected to increase again by Sunday. Highest ozone levels of this period are forecast for Tuesday.

Regarding PM-10, local pockets of dust may be possible Saturday afternoon with the winds. Also, still can't rule out the potential for occasional elevated PM-10 levels near the Rillito monitor on work days. In all though, PM-10 is forecast in the Good Air Quality Index (AQI) category through this period.

Check back on Tuesday for the next Tucson Air Quality Forecast.–M. Graves
http://www.azdeq.gov/forecasting
Last Update: Friday, May 25, 2018, 8:34 AM
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