Heavy, pungent wildfire smoke darkened skies in the U.S. on Thursday from the Great Lakes to parts of the East Coast, reducing visibility and prompting warnings that breathing the air outside could be dangerous.
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Light reflects off the water as the sun sets through wildfire smoke over Edmonton, Alberta, Friday, July 17, 2026. (AP Photo/Andy Bao)
The Sun has an orange cast from smoke coming down from the Canadian wildfires as it sets near the Philadelphia Phillies scoreboard during the fourth inning of a baseball game against the New York Mets, Thursday, July 16, 2026, in Philadelphia. (AP Photo/Chris Szagola)
A watercraft sits in the Detroit River near the skyline during poor air quality due to smoke from Canadian wildfires Thursday, July 16, 2026, in Detroit. (AP Photo/Paul Sancya)
Michael Lesperance weeds his driveway wearing a mask during poor air quality due to smoke from Canadian wildfires Thursday, July 16, 2026, in Grosse Pointe Park, Mich.. (AP Photo/Paul Sancya)
The New York City skyline is seen through a cover of wildfire smoke, in Jersey City, N.J., Friday, July 17, 2026. (AP Photo/Ryan Murphy)
The Jersey City skyline is seen through a cover of wildfire smoke, in Jersey City, N.J., Friday, July 17, 2026. (AP Photo/Ryan Murphy)
The sun is obscured by wildfire smoke as people run in front of the Washington Monument and Lincoln Memorial Reflecting Pool, Friday, July 17, 2026, on the National Mall in Washington. (AP Photo/Julia Demaree Nikhinson)
The sun is obscured by wildfire smoke as it rises behind the Marine Corps War Memorial, Friday, July 17, 2026, in Arlington, Va. (AP Photo/Julia Demaree Nikhinson)
The Statue of Liberty stands during sunset as smoke from wildfires blankets the sky, Thursday, July 16, 2026, in the Brooklyn borough of New York. (AP Photo/Yuki Iwamura)
National Guardsmen patrol the Lincoln Memorial as the sun, obscured by wildfire smoke, rises above the Washington Monument and the Reflecting Pool, Friday, July 17, 2026, on the National Mall in Washington. (AP Photo/Julia Demaree Nikhinson)
A child looks out from the observation deck of the CN Tower as smoke from wildfires in Northwestern Ontario blankets the city of Toronto, Thursday, July 16, 2026. (Cole Burston/The Canadian Press via AP)
A person wearing a mask takes the Staten Island Ferry as as smoke from wildfires blankets the sky, Thursday, July 16, 2026, in New York. (AP Photo/Yuki Iwamura)
The New York City skyline is shrouded in smoke as a flag flies in a park in Weehawken, N.J., Thursday, July 16, 2026. (AP Photo/Seth Wenig)
People take the Staten Island Ferry as smoke from wildfires blankets the sky, Thursday, July 16, 2026, in New York. (AP Photo/Yuki Iwamura)
Wildfire smoke blankets Vandercook Lake as a fisherman tries his luck on Thursday, July 16, 2026, near Jackson, Mich., Thursday, July 16, 2026. (J. Scott Park/Jackson Citizen Patriot via AP)
A person wearing a mask cycles in Times Square as smoke from wildfires blankets the sky, Thursday, July 16, 2026, in New York. (AP Photo/Yuki Iwamura)
The Detroit city skyline is obscured during poor air quality due to smoke from Canadian wildfires Thursday, July 16, 2026, in Detroit. (AP Photo/Paul Sancya)
Hazy skies from Canadian wildfires cover Silver Beach and Lake Michigan, Thursday, July 16, 2026, in St. Joseph, Mich. (Don Campbell/The Herald-Palladium via AP)
A person uses binoculars to look out as smoke from wildfires blankets the sky at Top of The Rock observation deck at the Rockefeller Center, Thursday, July 16, 2026, in New York. (AP Photo/Yuki Iwamura)
A golfer checks his score card at Willow Hills Golf course during poor air quality due to dense smoke from Canadian wildfires in Northbrook, Ill., Thursday, July 16, 2026. (AP Photo/Nam Y. Huh)
A person looks out a window at the Top of the Rock Observation Deck as wildfire smoke hangs over New York, Thursday, July 16, 2026. (AP Photo/Yuki Iwamura)
The Statue of Liberty is photographed from the Staten Island Ferry as smoke from wildfires blankets the sky, Thursday, July 16, 2026, in New York. (AP Photo/Yuki Iwamura)
Light reflects off the water as the sun sets through wildfire smoke over Edmonton, Alberta, Friday, July 17, 2026. (AP Photo/Andy Bao)
The Sun has an orange cast from smoke coming down from the Canadian wildfires as it sets near the Philadelphia Phillies scoreboard during the fourth inning of a baseball game against the New York Mets, Thursday, July 16, 2026, in Philadelphia. (AP Photo/Chris Szagola)
A watercraft sits in the Detroit River near the skyline during poor air quality due to smoke from Canadian wildfires Thursday, July 16, 2026, in Detroit. (AP Photo/Paul Sancya)
Michael Lesperance weeds his driveway wearing a mask during poor air quality due to smoke from Canadian wildfires Thursday, July 16, 2026, in Grosse Pointe Park, Mich.. (AP Photo/Paul Sancya)
The New York City skyline is seen through a cover of wildfire smoke, in Jersey City, N.J., Friday, July 17, 2026. (AP Photo/Ryan Murphy)
The Jersey City skyline is seen through a cover of wildfire smoke, in Jersey City, N.J., Friday, July 17, 2026. (AP Photo/Ryan Murphy)
The sun is obscured by wildfire smoke as people run in front of the Washington Monument and Lincoln Memorial Reflecting Pool, Friday, July 17, 2026, on the National Mall in Washington. (AP Photo/Julia Demaree Nikhinson)
The sun is obscured by wildfire smoke as it rises behind the Marine Corps War Memorial, Friday, July 17, 2026, in Arlington, Va. (AP Photo/Julia Demaree Nikhinson)
The Statue of Liberty stands during sunset as smoke from wildfires blankets the sky, Thursday, July 16, 2026, in the Brooklyn borough of New York. (AP Photo/Yuki Iwamura)
National Guardsmen patrol the Lincoln Memorial as the sun, obscured by wildfire smoke, rises above the Washington Monument and the Reflecting Pool, Friday, July 17, 2026, on the National Mall in Washington. (AP Photo/Julia Demaree Nikhinson)
A child looks out from the observation deck of the CN Tower as smoke from wildfires in Northwestern Ontario blankets the city of Toronto, Thursday, July 16, 2026. (Cole Burston/The Canadian Press via AP)
A person wearing a mask takes the Staten Island Ferry as as smoke from wildfires blankets the sky, Thursday, July 16, 2026, in New York. (AP Photo/Yuki Iwamura)
The New York City skyline is shrouded in smoke as a flag flies in a park in Weehawken, N.J., Thursday, July 16, 2026. (AP Photo/Seth Wenig)
People take the Staten Island Ferry as smoke from wildfires blankets the sky, Thursday, July 16, 2026, in New York. (AP Photo/Yuki Iwamura)
Wildfire smoke blankets Vandercook Lake as a fisherman tries his luck on Thursday, July 16, 2026, near Jackson, Mich., Thursday, July 16, 2026. (J. Scott Park/Jackson Citizen Patriot via AP)
A person wearing a mask cycles in Times Square as smoke from wildfires blankets the sky, Thursday, July 16, 2026, in New York. (AP Photo/Yuki Iwamura)
The Detroit city skyline is obscured during poor air quality due to smoke from Canadian wildfires Thursday, July 16, 2026, in Detroit. (AP Photo/Paul Sancya)
Hazy skies from Canadian wildfires cover Silver Beach and Lake Michigan, Thursday, July 16, 2026, in St. Joseph, Mich. (Don Campbell/The Herald-Palladium via AP)
A person uses binoculars to look out as smoke from wildfires blankets the sky at Top of The Rock observation deck at the Rockefeller Center, Thursday, July 16, 2026, in New York. (AP Photo/Yuki Iwamura)
A golfer checks his score card at Willow Hills Golf course during poor air quality due to dense smoke from Canadian wildfires in Northbrook, Ill., Thursday, July 16, 2026. (AP Photo/Nam Y. Huh)
A person looks out a window at the Top of the Rock Observation Deck as wildfire smoke hangs over New York, Thursday, July 16, 2026. (AP Photo/Yuki Iwamura)
The Statue of Liberty is photographed from the Staten Island Ferry as smoke from wildfires blankets the sky, Thursday, July 16, 2026, in New York. (AP Photo/Yuki Iwamura)
