News » indoor PM2.5 monitoring

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...

You check your city’s air-quality report before opening a window. The map looks green, so you assume the air in your kitchen, bedroom, or home office must be fine too. Then dinner starts. A pan heats up, the range hood stays off, and a monitor in the next room begins to climb. Both pieces of information can be valid. They are simply answering different...

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.