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_20180622_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 18:00 MST
61
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 61 Moderate
Particles (PM10) 14 Good
Particles (PM2.5) 13 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)
64
Moderate
Health Message: Unusually sensitive people should consider reducing prolonged or heavy exertion outdoors.
AQI - Pollutant Details
Ozone
101
Unhealthy for Sensitive Groups
Particles (PM10)
39
Good
Ozone
64
Moderate
Particles (PM10)
33
Good
Forecast Discussion: Ozone exceeded the federal health standard for the second day in a row yesterday, reaching an Air Quality Index (AQI) of 101 at the Saguaro Monument monitor (Saguaro National Park East). A stationary ridge of high pressure directly over Arizona has provided favorable atmospheric conditions for accumulation of ozone. Today, the strength of that high pressure will begin to diminish as a weak low pressure wave passes through the Mountain West and forces the high pressure to flatten out. However, ozone levels are still expected to accumulate and have the potential to threaten the health standard. An ozone High Pollution Advisory (HPA) is thus in place.

By Saturday, the flattened slab of high pressure will have been pushed south of Arizona, opening the door for a stronger, west-northwesterly flow over the state. This new pattern, plus breezy, southwesterly winds originating from the Gulf of California will help foster better dispersion of ozone. Ozone levels are thus expected to decrease. Similar conditions are forecast for Sunday as well.

Come Monday, high pressure looks to return to the Southwest, becoming more situated over Arizona on Tuesday. Ozone levels are therefore expected to increase again. At least an ozone Health Watch may be possible each day. We'll reassess the forecast on Sunday morning to see if these Health Watches need to be upgraded to HPAs.

Check back on Sunday for the next Tucson air quality forecast.–M. Graves
http://www.azdeq.gov/forecasting
Last Update: Friday, June 22, 2018, 9:17 AM
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