Air Quality

Wildfire Smoke & AQI: Indoor Protection Guide

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Homeowner checking an unhealthy AQI reading on a smartphone inside a clean home with an air purifier and HVAC filter while wildfire smoke creates a hazy outdoor landscape.

Researchers who paired indoor and outdoor PurpleAir sensors at more than 1,400 California buildings found that indoor PM2.5 nearly tripled on wildfire days. That happened even though closing up cut the share of outdoor smoke getting inside in half. Closing the windows helped. It did not solve the problem. We sell no filters or purifiers. … Read more

Should You Stay Inside Today? Live Nashville TN AQI Map & Air Quality Index Now

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Illustration of the Nashville, TN skyline beside a live AQI map and Air Quality Index dashboard showing good air quality with an AQI of 42, green monitoring markers across the city, outdoor activity recommendation, ozone and PM2.5 readings, and temperature, representing Should You Stay Inside Today? Live Nashville TN AQI Map & Air Quality Index Now.

On a hot Nashville afternoon, the sky can look clear while the ozone reading quietly climbs past 100. That gap, between how the air looks and what it is doing, is the whole problem. The American Lung Association handed the Nashville-Davidson-Murfreesboro metro a failing F for ozone smog in its 2026 State of the Air … Read more