Region 1: EPA New England

Current Estimated PM2.5 AQI

The AQI for PM2.5 is based on the 24-hour average PM2.5 concentration. This data is collected hourly from the Air Quality Monitoring network. In real-time, the full 24 hours of data are not available, so a method was devised to estimate the AQI based on the most recent 12 hours of data. Click for more details on this calculation.

Click each state on the map of New England below to view the current estimated PM2.5 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 PM2.5 AQI values »