This event is in the "Celebrate!" group. International Day of Clean Air All Day Celebrate! Virtual Event This event is in the "Celebrate!" group. Sep 7 2024 Sat International Day of Clean Air All Day Please note you are looking at an event that has already happened. Location: Online Location Audience: Everyone Program Type: Celebrate! Event Details: Get ready to breathe easier on the International Day of Clean Air! A time to recognize the amount of work that must be done to reduce the effects of smog, smoke, airborne chemicals like excessive CO₂, and other forms of harmful air pollution.