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NASA Shares Worrying Images Of US East Coast Engulfed By Smoke From Canadian Wildfires
The air quality index measures PM2.5, less than 2.5 microns particles, to determine the intensity of air pollution in cities.
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Smoke plumes may reach U.S. as wildfires in Canada erupt
In addition to the fires in Canada, several large wildfires in the Pacific Northwest are contributing smoke through that area and to the east. The largest fires are burning east of the spine of ...