Connecticut (CT): Current UV Index and Hourly Forecast

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As of 1:23 PM EDT on June 23, 2025, out of 184 cities in Connecticut in our database, 161 cities (88%) have a UV Index reading of Very High, while 23 cities (13%) have a UV Index reading of High. The city with the highest UV Index reading right now is Canaan, CT with a reading of 9.5.

Over the next 24 hours, the highest UV Index reading in Connecticut is expected to be 9.8 in Pawcatuck between 12:00 PM - 1:00 PM EDT tomorrow.

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Counties in Connecticut (CT)

• Fairfield County
• Hartford County
• Litchfield County
• Middlesex County
• New Haven County
• New London County
• Tolland County
• Windham County

Current UV Index in Major Cities in Connecticut (CT)

• Ansonia - 8.9
• Bridgeport - 9.3
• Bristol - 9.2
• Conning Towers Nautilus Park - 9.1
• Danbury - 7.2
• Derby - 8.9
• Glastonbury Center - 9.1
• Hartford - 9.2
• Kensington - 9.2
• Long Hill - 9.3
• Meriden - 9.3
• Middletown - 9.3
• Milford city - 8.9
• Naugatuck - 9.4
• New Britain - 9.2
• New Canaan - 8.7
• New Haven - 8.9
• New London - 9
• Norwalk - 9.3
• Norwich - 9.1
• Oakville - 9.4
• Riverside - 9.3
• Rockville - 9.1
• Sandy Hook - 8.4
• Shelton - 9.3
• Southwood Acres - 9.1
• Stamford - 9.3
• Staples - 9.3
• Storrs - 9.3
• Thompsonville - 9.1
• Torrington - 8.9
• Trumbull Center - 9.3
• Wallingford Center - 9.3
• Waterbury - 9.4
• West Haven - 8.9
• Willimantic - 9.3