Tucson area air pollution will hit harmful levels Tuesday, Pima County warns https://www.tucsonsentinel.com/local/report/040423_dust_advisory/tucson-area-air-pollution-will-hit-harmful-levels-tuesday-pima-county-warns/
The Pima County Department of Environmental Quality declared Tuesday a Dust Action Day for the Tucson metropolitan area, warning of harmful levels of air pollution due to high winds Monday night.
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