Air Quality

USA Live Air Quality Index AQI Map Now & Today

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Homeowner viewing a color-coded USA Live Air Quality Index AQI Map Now & Today on a laptop, with an indoor AQI monitor and hazy city skyline in the background.

A live AQI map turns hourly monitor readings into one color-coded number between 0 and 500. Each monitor reports the highest value among ozone, PM2.5, and PM10 that hour. Green and yellow mean outdoor activity is fine for most people. Orange, red, and purple mean cut exertion and filter the air indoors. TL;DR The U.S. … Read more

What’s Drifting Through Tennessee Now? Live AQI Map Today | Air Quality Index

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Illustration of a live Tennessee Air Quality Index (AQI) map with color-coded air quality levels across the state, highlighted cities, a mobile AQI dashboard, flowing clean-air graphics, and the Nashville skyline, representing What's Drifting Through Tennessee Now? Live AQI Map Today | Air Quality Index.

A clear Tennessee sky tells you almost nothing about the air you are breathing. You cannot see ozone, and you cannot see the fine particles riding in on smoke from a fire three states away. The live AQI map on this page makes both visible, county by county and hour by hour. In our air … Read more