The EPA (the federal agency that sets limits on air pollution and checks whether states are meeting them) has a rule letting states exclude certain "exceptional events" — things like wildfires — from air quality data, so those events don't count against a state for violating pollution limits. This bill widens what counts as an exceptional event: it would now include human-set fires meant to copy natural fires (like controlled burns), as well as heat waves, droughts, and unusual periods of stagnant air, which previously couldn't be excluded. It also directs the EPA to update its rules for handling air monitoring data affected by wildfire-prevention efforts, and to do combined regional analysis when several states are dealing with the same fire or weather event, rather than reviewing each state's request separately. In practice, this could make it easier for states to avoid pollution violations tied to wildfires, controlled burns, heat, or drought conditions.