The Brief A category five dust storm swept through the Phoenix area late Monday night, bringing widespread blowing dust and high winds that lingered into Tuesday. The Arizona Department of Environmental Quality issued a High Pollution Advisory for Phoenix as dust levels were expected to exceed federal health standards. What they're saying:The Arizona Department of Environmental Quality issued a High Pollution Advisory for Phoenix, expecting dust to exceed federal health standards. Experts blame a dust storm on the night of Aug. 3. That storm was rated a Category 5 on the ASU Dust Storm Scale due to its widespread dust, high winds, and long duration.