Daylight through the yearLongest day (Jun 21): 15 h 22 min5:18 am – 8:40 pmShortest day (Dec 21): 9 h 0 min7:26 am – 4:25 pm
Sun todaySunrise –Sunset –
People0 residentsin the ZIP code area0 householdsSource: US Census Bureau, American Community Survey 2020-2024
Natural hazardsOverall risk Relatively ModerateDane County, WI, compared with all US countiesHigher-risk hazardsCold wave Very HighHail Relatively HighTornado Relatively HighRiver flooding Relatively HighSource: FEMA National Risk Index (county level)
Air quality67% of days had good air in 2025246 of 365 days measured113 moderate, 5 unhealthy for sensitive groups, 1 unhealthy daysMedian index 41, worst day 170main pollutant: fine particles (PM2.5)Source: US EPA Air Quality Index, Dane County monitors, WI
Drinking waterMadison Water Utilityserves 272,000 people from ground water1 health-based violation since 2021latest Oct 2024: lead and copper, treatment technique1 monitoring or reporting violation since 2021Source: US EPA Safe Drinking Water Information System, largest system serving the town
