Daylight through the yearLongest day (Jun 21): 14 h 26 min6:13 am – 8:39 pmShortest day (Dec 21): 9 h 53 min7:26 am – 5:19 pm
Sun todaySunrise –Sunset –
Natural hazardsOverall risk Relatively ModerateRichland County, SC, compared with all US countiesHigher-risk hazardsIce storm Very HighLightning Relatively HighStrong wind Relatively HighTornado Relatively HighSource: FEMA National Risk Index (county level)
Air quality58% of days had good air in 2025212 of 365 days measured153 moderate daysMedian index 47, worst day 89main pollutant: fine particles (PM2.5)Source: US EPA Air Quality Index, Richland County monitors, SC
Drinking waterColumbia City of (sc4010001)serves 354,068 people from surface water1 health-based violation since 2021latest Dec 2024: Chlorite, maximum contaminant levelSource: US EPA Safe Drinking Water Information System, largest system serving the town
