Daylight through the yearLongest day (Jun 21): 14 h 49 min6:19 am – 9:08 pmShortest day (Dec 21): 9 h 31 min7:55 am – 5:25 pm
Sun todaySunrise –Sunset –
Natural hazardsOverall risk Relatively HighJefferson County, KY, compared with all US countiesHigher-risk hazardsTornado Very HighRiver flooding Relatively HighHeat wave Relatively HighCold wave Relatively HighSource: FEMA National Risk Index (county level)
Air quality52% of days had good air in 2025188 of 365 days measured167 moderate, 9 unhealthy for sensitive groups, 1 unhealthy daysMedian index 49, worst day 153main pollutant: fine particles (PM2.5)Source: US EPA Air Quality Index, Jefferson County monitors, KY
Drinking waterLouisville Water Companyserves 806,997 people from surface waterNo health-based violations since 2021Source: US EPA Safe Drinking Water Information System, largest system serving the town
