Skip to main content
U.S. flag

An official website of the United States government

Here’s how you know

Dot gov

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

HTTPS

Secure .gov websites use HTTPS
A lock ( Lock A locked padlock ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

EPA Region 1
Contact Us

Current Estimated Ozone AQI

The AQI for ozone is based on the 8-hour average ozone concentration. This data is collected hourly from the Air Quality Monitoring network. In real-time, the full eight hours of data are not available so a method was devised to estimate the 8-hour AQI from the hourly ozone data using a mid-point approach. Click for more details on this calculation.

Click each state on the map of New England below to view the current estimated ozone AQI for each monitor in that state.

Click on state to view peal AQI ozone map.

Since atmospheric conditions are variable, the actual peak AQI can be either higher or lower than the estimated AQI. Yesterday's actual peak ozone AQI values »

Contact Us to ask a question, provide feedback, or report a problem.

United States Environmental Protection Agency

Discover.

  • Accessibility
  • Budget & Performance
  • Contracting
  • EPA www Web Snapshots
  • Grants
  • No FEAR Act Data
  • Privacy
  • Privacy and Security Notice

Connect.

  • Data.gov
  • Inspector General
  • Jobs
  • Newsroom
  • Open Government
  • Regulations.gov
  • Subscribe
  • USA.gov
  • White House

Ask.

  • Contact EPA
  • EPA Disclaimers
  • Hotlines
  • FOIA Requests
  • Frequent Questions

Follow.

Last updated on January 18, 2023