Daylight through the yearLongest day (Jun 21): 15 h 26 min5:45 am – 9:11 pmShortest day (Dec 21): 8 h 57 min7:56 am – 4:53 pm
Sun todaySunrise –Sunset –
Natural hazardsOverall risk Relatively ModerateMinnehaha County, SD, compared with all US countiesHigher-risk hazardsIce storm Very HighTornado Relatively HighWinter weather Relatively HighCold wave Relatively HighSource: FEMA National Risk Index (county level)
Air quality81% of days had good air in 2025294 of 364 days measured66 moderate, 4 unhealthy for sensitive groups daysMedian index 36, worst day 125main pollutant: ozoneSource: US EPA Air Quality Index, Minnehaha County monitors, SD
Drinking waterSioux Fallsserves 216,462 people from surface waterNo health-based violations since 2021Source: US EPA Safe Drinking Water Information System, largest system serving the town
