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When Windows Close: A Fall Guide to PM2.5, CO2, TVOC and Humidity
The first cool evening of fall often changes a home in small, familiar ways. Windows stay closed a little longer. Dinner moves back indoors. Heating systems begin running again. Candles, fireplaces and seasonal cleaning return to the routine. The house may feel warmer and more comfortable. But the air inside is also responding to a new combination of occupancy, ventilation, outdoor conditions and indoor... -
When Air Stories Become Real Needs: Final Highlights from #MyAirStory
When we launched #MyAirStory, we asked a simple question: what is your air quality story? Is your bedroom stuffy in the morning? Does office air make you feel tired? Do you ever wonder about the air in your child’s room, around your pets, or inside the spaces where your family spends most of the day? As the campaign came to a close, the stories became... -
Wildfire Smoke Is Already Reshaping Indoor Air Decisions This Summer
Outdoor AQI is the warning. Indoor PM2.5 is the room-level answer. As U.S. wildfire activity rises in 2026, households and workplaces need practical ways to understand whether smoke-related particles are entering indoor spaces and whether actions like closing windows or running purification are actually working.


