Yakima Clean Air Agency

A countywide burn ban has been downgraded to allow the use of certified fuel burning heating devices, air quality officials announced Friday.

Improved air quality prompted the downgrade of the burn ban, according to a news release from the Yakima Clean Air Agency.

However, the use of uncertified fuel burning devices are still prohibited unless the only source of heat, the release said.

All outdoor burning, including agricultural burning, remains prohibited until further notice, the release said.

The ban was initially invoked on Nov. 1, and upgraded Monday to include all fuel-burning heating devices unless they were the home's only source of heat.

Outdoor burning, including agricultural burning, remains prohibited on the Yakama reservation.

More information can be obtained at www.yakimacleanair.org.

Reach Phil Ferolito at pferolito@yakimaherald.com or on Twitter: @philipferolito