Air pollution is a concern for everyone. Air pollution has been linked to a number of health problems like asthma,
heart disease, and breathing problems among others. Although national air quality has improved over the last 20 years,
there are still many challenges in protecting public health and the environment for air quality problems.
The Air Quality Index (AQI) is used for reporting daily air quality. The AQI is a based on five major air pollutants
regulated by the EPA under the Clean Air Act: ground level pollution, particulate pollution, carbon monoxide, sulfur dioxide, and nitrogen dioxide.
Below you can see most recent AQI for New England.
Learn More about Air Quality:
Connecticut DEEP Air Quality Page
EPA Air Now
The Nationally Consistent Data Measures (NCDMs) for Air Quality are:
Annual PM 2.5 Level (Monitored & Modeled Data)
- Annual average ambient concentrations of PM 2.5 in micrograms per cubic meter, based on seasonal averages and daily measurement
PM2.5 - Days Above Regulatory Standard (Monitor & Modeled Data)
- Percent of days with PM2.5 levels over the National Ambient Air Quality Standard
Ozone - Days Above Regulatory Standard (Monitored & Modeled Date)
- Number of days with maximum 8-hour average ozone concentration over the National Ambient Air Quality Standard
Each of the Air Quality NCDMs are available in the table on this page.