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Summary
DescriptionParticulateTrendSouthwestUS.png
English: A graph of particulate levels in the atmosphere as determined by the US Environmental Protection Agency
This image (or other media) is a work of an Environmental Protection Agency employee, taken or made as part of that person's official duties. As works of the U.S. federal government, all EPA images are in the public domain.
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Captions
Air quality trends in the southwestern United States
Items portrayed in this file
depicts
inception
2017
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current
00:23, 8 February 2019
451 × 368 (32 KB)
Comfr
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