Extreme heat is a killer and its impact is becoming far, far deadlier as the human-caused climate crisis supercharges temperatures, according to a new study, which estimates global warming tripled ...

How climate change is worsening extreme heat The latest science on the link between climate change and natural disasters — and how they may be playing out where you live.

Duquesne Light prepares for extreme heat and potential storms Both weather events present different types of potential damage that crews may need to fix.

The 4 News Now Extreme Team is dedicated to making a difference in our local community, led and organized by weather anchor, Mark Peterson.

Globally, nearly half of the world’s population experienced at least 30 extra days of extreme heat between May 2024 and May 2025.

Learn more about the latest Phoenix area weather forecast and conditions with Most Accurate Forecast from ABC15.

A "worst case scenario" of meteorological events contributed to the extreme flash flooding event that killed dozens of people in the region, according to experts.

Millions of Americans across eight Western states are at risk of extreme fire activity on Wednesday as National Weather Service (NWS) meteorologists issued widespread red flag warnings.

Learn more about the latest Phoenix area weather forecast and conditions with Most Accurate Forecast from ABC15.

The latest news, analysis, forecasts and updates for extreme weather across the nation, including coverage of hurricanes, heat waves, flooding and more.

Pittsburgh's CitiParks will open six cooling centers as high temperatures are expected to be in the upper 80s on Monday.

PHOENIX (AZFamily) — It’s a First Alert Weather Day with an Extreme Heat Warning in effect for the Valley starting at 10 a.m. today.