Angelenos still bothered by the smell of smoke may be surprised to see that Air Quality Index numbers returned to “healthy” or “moderate” levels this week in L.A. County, but they shouldn ...
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NASA Shares Worrying Images Of US East Coast Engulfed By Smoke From Canadian WildfiresThe air quality index measures PM2.5, less than 2.5 microns particles, to determine the intensity of air pollution in cities.
The Minnesota Pollution Control Agency has issued an air quality alert for a number of areas in the state, including the Twin Cities metro, effective from noon to 9 p.m. Friday, May 31. Air ...
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