Air Quality

Welcome to Vermont's Real-Time Air Quality Data

Visit Real Time Data 

Things to note when looking at the Real-Time data: The Home Page displays a map of Vermont with the stationary monitoring site locations indicated by color coded boxes and links to various graphical data for the past 5 days

The data summary graphs listed below demonstrate how Vermont's air quality compares to the National Ambient Air Quality Standards (NAAQS). These data summary graphs show the trends relative to the NAAQS through 2023 and are updated on a yearly basis. 

Ozone (O₃) 8-Hour Average

Value for each year is the average of the EPA design value* for the previous three-years.

Reference: EPA Design Value Report AMP480 11/1/2024