Bob Oravec, a senior forecaster at the US Weather Forecast Center, said that extending from the northern Rockies to the Mid-Atlantic region and south to the Gulf Coast, about 151 million people experienced hot weather again on Friday. He said yellowed wildfire smoke from Canada enveloped large areas in the Northeast, Mid-Atlantic and Midwest, affecting the air quality of about 87 million Americans on Friday. About 70 million people are being hit by both smoke and high temperatures at the same time.

Bob Oravec, a senior forecaster at the US Weather Forecast Center, said that extending from the northern Rockies to the Mid-Atlantic region and south to the Gulf Coast, about 151 million people experienced hot weather again on Friday. He said yellowed wildfire smoke from Canada enveloped large areas in the Northeast, Mid-Atlantic and Midwest, affecting the air quality of about 87 million Americans on Friday. About 70 million people are being hit by both smoke and high temperatures at the same time.