A peer-reviewed study published in Science has documented frequent new particle formation during a heat wave, a phenomenon ...

Tiny aerosol particles in the air play a big role in regulating how much sunlight our planet absorbs or reflects, and how clouds form above us. In a recent study, researchers found that extreme heat ...

“An anomalously strong ridge of high pressure centered over the Four Corners states will lead to a significant heat wave,” the National Weather Service said in a national forecast discussion Tuesday.

Every summer, public health agencies warn about heat waves, and every summer, the death toll still catches communities off ...

During Australia's unprecedented heat wave in late January, air temperatures reached 50°C in inland South Australia.

Add Yahoo as a preferred source to see more of our stories on Google. Amid ongoing wildfires, extreme heat is gripping the Pacific Northwest, with temperatures ranging from the upper 80s to well over ...

Amid ongoing wildfires, extreme heat is gripping the Pacific Northwest, with temperatures ranging from the upper 80s to well over 100 degrees across Oregon on Tuesday, Aug. 26, 2025. While the day is ...

An excessive heat warning is in effect for much of Oregon's populated areas, including Portland, Salem, and Eugene. Temperatures are expected to reach the mid-90s, with nighttime temperatures ...