Heat

At night, temperatures are often cooler and the air is wetter, which gives wildland firefighters a long window to make up significant ground when trying to suppress blazes. But that pattern is breaking down, a trend driven by human-caused climate change, according to a new study.

The federal government shifts away from workplace inspections. Meanwhile some states have their own workplace rules to address heat.

The Trump Administration wanted to scrap the program. But is now releasing funds earmarked to help people pay air conditioning during an anticipated extreme heat summer.

Southern Nevada hosts first Heat Summit with collaboration from Phoenix leaders

A new report from the American Lung Association finds about half of U.S. children are living in areas with unhealthy air quality, and several Mountain West cities rank among the most polluted in the country.

Warmer than usual weather in March, combined with drought, has made it more likely the state will see large fires this summer.

The monthly National Interagency Fire Center outlooks are typically staid documents, providing just-the-facts analysis. But the latest is superlative-laden as it describes record-low snowpacks, record-early snow melt and record-high temperatures.

Before most residents have acclimated to the heat or set up home cooling systems, temperatures are rising to unseasonably high levels.

Hot days and polluted air may be doing more than making people uncomfortable — they could also affect mental health. A new study from the University of Utah finds that short bursts of extreme heat, combined with certain types of air pollution, are linked to an increased risk of suicide.

Some cities are predicted to near 100 degrees.