Unhealthy air quality levels forced schools across Idaho to keep students indoors on Wednesday.

"We're a school. This is what we do and we roll with it. We go with the flow," Kathy Crowley, Ponderosa Elementary Principal said.

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The levels reached category red levels for a few hours, prompting schools to keep students indoors during recess and lunch hours.

"We have a set procedure, and teachers have things for the kids to do and they sit in the halls by the classroom and they do things that are supposedly quiet and have a good time with friends," Crowley said.

School districts in Boise, Nampa, West Ada and Vallivue also spent the day monitoring the air quality to determine whether outdoor, after-school activities could go on as planned.