Extremely hot, dry conditions forecast across much of the West through the Fourth of July are heightening concerns about wildfires and the dangers of fireworks, including in Salt Lake City where officials are replacing their traditional explosive extravaganza with a drone light show.

An unusually wet winter and spring has allowed for the return of live fireworks shows in some other areas that canceled them in recent years due to drought, including parts of Nevada, California and Arizona.

But wildfire risks are growing with triple-digit temperatures forecast this weekend — up to 115 degrees Fahrenheit (46 Celsius) in Phoenix, where a shortage of professional-grade fireworks prompted cancellations last year but red-white-and-blue bursts resume this Independence Day.

In Utah, Salt Lake City for the first time is replacing fireworks with a drone show. Fireworks are still planned in most suburbs and neighboring towns.

“As temperatures rise and fire danger increases, we must be conscientious of both our air quality and the potential for wildfires,” Salt Lake City Mayor Erin Mendenhall said this week.

A laser light show replaces conventional explosions again in Flagstaff, Arizona. And at Lake Tahoe straddling the California-Nevada line, communities on the north shore will celebrate with a drone show they implemented last Fourth of July due to lingering drought and wildfire risks....