The 10 Most Air-Polluted Cities in the U.S.

The World Health Organization has ranked cities around the world on their amount of particulate pollution in the air. Here’s the dirtiest of the dirty in the U.S.

via 10. Pittsburgh/San Diego – The 10 Most Air-Polluted Cities in the U.S. – TIME.

About Respro® UK Ltd

Respro® Masks: Cycle masks, motorcycle masks and allergy masks. External wear for internal protection.
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