Ken Larsen's web site - Air Quality


As the world's human population rises, air pollution will rise and global warming will follow.


A measure of air quality has been invented called the Air Quality Index (AQI).  [definition]


The AQI is based on measurements of these five outdoor air pollutants:

Current AQI's in various U.S. locations:

[World map that's zoomable]


Ken Larsen's home page