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

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

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

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 ...

The U.S. Geological Survey notes that groundwater is the source of drinking water for about half of the total U.S. population ...

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

Tropical Storm Andrea spun to life this week as the first named storm of the 2025 Atlantic hurricane season, though the system quickly fizzled out. Satellite images captured its brief swirl over the ...

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