BOISE, Idaho -

A fire in southwestern Idaho that has scorched more than 280 square miles has ranked among the state's largest wildfires in recent years.
   
KBOI-TV reports the so-called Pioneer Fire between Idaho City and Lowman was only 55 percent contained Monday. The fire has been burning since July 18 and has since prompted highway and campground closures and caused unhealthy levels of smoke in the area.
   
The blaze is larger than last year's Tepee Springs Fire, which spread across 150 square miles near Riggins last year, and the 14-square-mile Whiskey Complex fire that burned near Garden Valley in 2014.
   
The Pioneer Fire has also topped three major fires in 2013, but is still smaller than last year's Soda Fire, which burned more than 430 square miles in Owyhee County.