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air quality, Code Purple

Scientific American · 2d

U.S. cities have the worst air quality in the world right now—here’s how to stay safe

U.S. cities have the worst air quality in the world right now—here’s how to stay safe

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· 2d · on MSN

These cities are under code purple, maroon for bad air quality

What is Code Purple? See air quality map for Pennsylvania

Philadelphia under code purple conditions Friday; what it means

Smoke from wildfires in Canada and Minnesota have pushed Philadelphia into a Code Purple Air Quality Alert Friday.

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Code Orange air quality alert issued for Philadelphia area Saturday, July 18

DC, Northern Virginia, Maryland air quality at Code Red Saturday: When will wildfire smoke clear?

Philadelphia-area events continue under air quality alerts

The Dell Music Center canceled its event scheduled for Sunday evening because of air quality concerns.

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Wildfire smoke causes safety concerns

Code Purple air alert moves summer camps indoors for kids' safety

Smoke, wildfires and Air quality

Maps: Tracking Air Quality and Smoke From Wildfires in Canada and the U.S.

Wildfires in Canada, the United States and Mexico often send smoke throughout the continent.

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Air quality improving in Northeast, while wildfire smoke hangs over Midwest

· 14h · on MSN

Wildfire smoke, air quality concerns return in Chicago

Wildfire Smoke From Canada And Minnesota Pushes Farther Into U.S., Engulfs DC In Haze

Millions of people in the Great Lakes, Northeast and Mid-Atlantic states muddled through another day of unhealthy air from uncontrolled wildfires on Friday.

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Wildfire smoke is driving terrible air quality in major cities, but relief is coming

Wildfire smoke to push mid-Michigan back under an air quality alert Sunday, one day after it was lifted

The latest on poor air quality in NYC caused by Canadian wildfires

On Thursday, air quality reached "very unhealthy" levels, with many New Yorkers choosing to protect themselves from the smoke by wearing masks.

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Smoke from Canadian wildfires continue to grip Midwest, Northeast

Wildfire smoke from Canada and Minnesota pushes farther into the U.S. and engulfs D.C. in haze

3d

Cook County shatters air quality record, EPA data shows, as dangerous wildfire smoke envelops region

Residents warned to stay inside as fine particulate matter from wildfire smoke from Canada and Minnesota reaches hazardous levels.

4d

Climate Change and Air Pollution Combo Is a ‘Double Whammy’ for Health

Days that are both extremely hot and polluted come with higher risks of respiratory ailments and other health hazards.

1d

Canada Prepares to Evacuate Ontario Community as Wildfire Smoke Chokes US

The Canadian military was preparing on ⁠Saturday ⁠to evacuate a remote community of ⁠600 people threatened by forest wildfires that have spread, choking smoke across a broad swath of the United States.

2d

Trump blames Canada for wildfire smoke, will add cost to tariffs

Heavy smoke from hundreds of Canadian fires enveloped a swath of the U.S. from the Midwest to the Northeast on Thursday and Friday.