BOISE -- Air quality in the Treasure Valley dropped back into the red category Thursday, signifying air that is still considered "unhealthy" due to the smoke pouring into the area from wildfires around the region.

For the third day in a row, schools are keeping students indoors and canceling high school sporting events.

The category is an improvement from Wednesday when air quality plunged into the "very unhealthy" Purple category.

Unhealthy smoke levels are expected to continue into Friday.

The Idaho Department of Environmental Quality reports on its website that the air quality index (AQI) is more than 182. The AQI represents the expected level of pollution for the area. It is the average for the entire day. There may be some periods throughout the day when air quality is greater or less than the forecasted AQI.

List will be updated as announcements come in:

- Boise School District canceled all outside activities and events.

- Boise High vs. Timberline varsity football game has been rescheduled for Saturday at 2 p.m. at Dona Larsen Park. The Borah vs. Columbia game has been moved up to 11 a.m. Saturday to accommodate both games at that location.

- Borah's JV and freshman games have been rescheduled to October 26.

- Bruneau-Grand View Joint School District says there will be no cross country meet, but they will still hold practice inside until 4:30 p.m.

-Caldwell's soccer games against Middleton have been rescheduled for Monday, September 25, with the same game times.

-Capital High's varsity football game vs. Highland on Friday night has been canceled.

-Fruitland has canceled the JV football game against Gooding as well as the soccer game against Payette. Payette High School officials say they will hold modified practice.

-Homedale JV game against Vale has been canceled.

-Kuna JV and freshman football games against Capital have been rescheduled for October 26.

-Middleton JV football, freshman football, and the boys and girls soccer games, as well as the cross country meet have been canceled.

-New Plymouth vs. Nyssa JV and varsity games have been rescheduled for Saturday. JV will kick off at 2 p.m. then varsity will play following that game.

-Timberline vs. Boise JV and freshman games for Friday have been rescheduled for October 25.

-West Ada School District -- all outdoor afterschool activities for Thursday have been canceled. Games scheduled for tonight will be re-scheduled.

-Weiser officials say the cross country meet at Rolling Hills has been canceled. No date announced for possible make-up.

MORE: Smoke levels in Ada County return to 'unhealthy' Red category

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