"Avoid all physical activity outdoors," the EPA advises at this level. According to the EPA's map, Picture Rocks and Marana ...

Heat-related advisories were in place across eight states on Tuesday, as the National Weather Service continued to warn of ...

According to the Environmental Protection Agency (EPA), ozone exposure can irritate the respiratory tract, causing coughing, ...

"Don't underestimate the heat! It is the deadliest weather phenomenon in the U.S.A.," the NWS says. In southwest Arizona and ...

According the the National Hurricane Center, Tropical Storm Flossie could strengthen into a hurricane as early as Monday.

A regional air quality alert has been issued for parts of Southern California as two fires continue to burn in Riverside ...

Millions of Americans were urged to stay indoors Friday as hot and humid conditions were expected to blanket large portions ...

At least eight states were expected to see temperatures that would feel hotter than those in Death Valley—often referred to ...

Temperatures in Florida, Georgia, Arkansas, Tennessee, Kentucky, Indiana, Illinois, North Carolina, and Virginia could feel ...

Millions of Americans in the Northeast are being advised to avoid strenuous physical activity outdoors due to unhealthy air ...

Americans across 29 states have received heat-related warnings from the National Weather Service (NWS) as of early Monday, ...

The NWS forecast office, Baltimore-Washington, on X, formerly Twitter, on Monday: "Temperatures will further warm today with ...