Daylight through the yearLongest day (Jun 21): 15 h 2 min5:36 am – 8:37 pmShortest day (Dec 21): 9 h 19 min7:23 am – 4:42 pm
Sun todaySunrise –Sunset –
Natural hazardsOverall risk Relatively HighLancaster County, PA, compared with all US countiesHigher-risk hazardsWinter weather Very HighRiver flooding Relatively HighLightning Relatively HighHurricane Relatively HighSource: FEMA National Risk Index (county level)
Air quality61% of days had good air in 2025221 of 365 days measured142 moderate, 2 unhealthy for sensitive groups daysMedian index 45, worst day 119main pollutant: fine particles (PM2.5)Source: US EPA Air Quality Index, Lancaster County monitors, PA
Drinking waterCity of Lancasterserves 120,000 people from surface water1 health-based violation since 2021latest Apr 2024: trihalomethanes (TTHM), maximum contaminant level2 monitoring or reporting violations since 2021Source: US EPA Safe Drinking Water Information System, largest system serving the town
