As of 6:49 AM EDT on October 17, 2025, all 73 cities in Fairfield County, CT in our database have a UV Index reading of 0, indicating no radiation from the sun.
Over the next 24 hours, the highest UV Index reading in Fairfield County, CT is expected to be 3.7 in Byram between 1:00 PM - 2:00 PM EDT today.
Range | 0 - 2 | 3 - 5 | 6 - 7 | 8 - 10 | 11+ |
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Color | |||||
Risk | Low | Moderate | High | Very High | Extreme |