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_20180521_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 16:00 MST
97
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 97 Moderate
Particles (PM10) 89 Moderate
Particles (PM2.5) 28 Good
Air Quality Forecast
Today Tomorrow
Air Quality Index (AQI)
55
Moderate
Health Message: Unusually sensitive people should consider reducing prolonged or heavy exertion.
Air Quality Index (AQI)
54
Moderate
Health Message: Unusually sensitive people should consider reducing prolonged or heavy exertion.
AQI - Pollutant Details
Ozone
50
Good
Particles (PM10)
55
Moderate
Ozone
49
Good
Particles (PM10)
54
Moderate
Forecast Discussion: Ozone was elevated around the Tucson area yesterday, with most ozone monitors seeing ozone reach an Air Quality Index (AQI) of at least 80. Two monitors (Fairgrounds and Saguaro Monument) saw ozone reach ozone Health Watch criteria (90-100 AQI).

Today through Tuesday, a low pressure circulation will very slowly make its way over the Southwest U.S. By later Tuesday, this system will begin to weaken and lift out to the northeast. While this system remains over the region, afternoon winds in Tucson will be breezy (15-20 mph, with higher gusts possible) and out of the south-southwest. As a result, PM-10 (dust) levels have the potential to be elevated, particularly at the Rillito monitor. PM-10 is forecast in the low-Moderate AQI category today and Tuesday. Then, by Wednesday, afternoon winds will weaken and PM-10 is expected to return to the Good AQI category.

The ozone forecast, on the other hand, will be inverse of the PM-10 forecast. With a breezy, southerly regional flow today and Tuesday, ozone levels are expected to improve and be in the Good AQI category both days. But by Wednesday, ozone levels are forecast to trend upwards again due to weaker ventilation.



Check back tomorrow for the next Tucson Air Quality Forecast.–M. Graves
http://www.azdeq.gov/forecasting
Last Update: Monday, May 21, 2018, 9:06 AM
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