Fire restrictions begin Wednesday at four national forests around Arizona.
Campfire and smoking restrictions will be enforced on the Coconino, Kaibab, Prescott and Apache-Sitgreaves National Forests.
Fires, campfires, charcoal, coal and wood stoves are allowed under the restrictions only in developed campgrounds managed by concessionaires or have campground hosts.
The restrictions also limit smoking to within enclosed vehicles or buildings or in developed campgrounds.
The forests use fire restrictions to help prevent human-caused fires and to limit the exposure of users during periods of dangerous fire conditions.
Fire restrictions typically remain in effect until the forests receive significant precipitation.
Authorities say Arizona's extreme heat and a dry winter mean there's a high risk of wildfires. Summer has typically been considered wildfire season but experts now say blazes can happen year-round.