Classes resumed Wednesday at the four Wahiawa schools that were closed Tuesday because of possible dangers from a brush fire that has been burning since Saturday.

The Department of Education said in a tweet Wednesday that Iliahi Elementary, Wahiawa Elementary, Wahiawa Middle and Leilehua High schools reopened because overnight rain improved conditions in the area near California Avenue where the schools are located.

Football practice at Leilehua was also canceled Tuesday; its preseason opener is against Punahou School this weekend. Last year, Leilehua’s preseason game against Punahou was canceled because of Tropical Storm Iselle.

The state Department of Land and Natural Resources said the Poamoho-Ewa Forest Reserve fire has charred about 500 acres and was considered 60 percent contained as of Wednesday night.

Twelve firefighters from the Division of Forestry and Wildlife were fighting the blaze Wednesday.

A bulldozer was building a firebreak and three helicopters were conducting water drops, officials said. Honolulu Fire Department Capt. David Jenkins said the helicopters were refueled from an HFD truck.

Heavy smoke in Wahiawa and surrounding areas also prompted advisories from the state Department of Health for residents suffering from respiratory conditions to stay indoors and make sure they have an adequate supply of medications.

The overnight rain also lessened the possible spread of the brush fire to homes along California Avenue.

The fire department on Wednesday relieved the two companies from a fire watch established Tuesday to warn residents if the brush fire headed in their direction. Jenkins said firefighters monitored the area all day Wednesday.

On Monday, residents of 100 homes along California Avenue were forced to evacuate for nearly four hours because flames came within 400 yards of the structures.