Thursday night’s game between the Philadelphia Phillies and New York Mets has been moved up by one hour because of air quality concerns. The matchup at Citizens Bank Park is now scheduled to begin at 6:10 p.m. ET.

The change affects a game that had originally been set to start later in the evening. Officials adjusted the first-pitch time as air quality issues continued to affect the region.

The decision highlights how weather and environmental conditions can alter scheduling during the baseball season. In this case, the earlier start is intended to account for the ongoing concerns surrounding outdoor conditions in Philadelphia.

The Phillies and Mets are still set to play Thursday night, but fans planning to attend or watch will need to note the revised 6:10 p.m. ET start time.