2015 8-hour Ozone Designations made on April 30, 2018. State Nonattainment Area Name Geographic Area Covered Designation Classification Attainment Date Connecticut Greater Connecticut Hartford County Litchfield County New London County Tolland County Windham County Mashantucket Pequot Tribe of Connecticut Mohegan Indian Tribe of Connecticut Nonattainment Marginal 2021 New York-N. New Jersey- Long Island NY-NJ-CT Fairfield County Middlesex Country New Haven County Nonattainment Moderate 2024 Maine Entire State Attainment Massachusetts Entire State Attainment New Hampshire Entire State Attainment Rhode Island Entire State Attainment Vermont Entire State Attainment ------- |