Connecticut (CT): Current UV Index and Hourly Forecast

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As of 3:04 PM EDT on September 17, 2026, out of 184 cities in Connecticut in our database, 136 cities (74%) have a UV Index reading of Moderate, while 48 cities (26%) have a UV Index reading of Low. The city with the highest UV Index reading right now is Stamford, CT with a reading of 4.5.

Over the next 24 hours, the highest UV Index reading in Connecticut is expected to be 6.5 in Stamford between 1:00 PM - 2:00 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 - 4.2
• Bridgeport - 3.2
• Bristol - 3.8
• Conning Towers Nautilus Park - 3.1
• Danbury - 3.1
• Derby - 4.2
• Glastonbury Center - 1.3
• Hartford - 1.7
• Kensington - 1.7
• Long Hill - 3.2
• Meriden - 3.1
• Middletown - 3.1
• Milford city - 4.2
• Naugatuck - 2.5
• New Britain - 1.7
• New Canaan - 4.2
• New Haven - 4.2
• New London - 4
• Norwalk - 4.5
• Norwich - 3.1
• Oakville - 2.5
• Riverside - 4.5
• Rockville - 1.3
• Sandy Hook - 2.4
• Shelton - 3.2
• Southwood Acres - 0.7
• Stamford - 4.5
• Staples - 3.2
• Storrs - 1.5
• Thompsonville - 0.7
• Torrington - 2.7
• Trumbull Center - 3.2
• Wallingford Center - 3.1
• Waterbury - 2.5
• West Haven - 4.2
• Willimantic - 1.5