Daylight through the yearLongest day (Jun 21): 15 h 2 min5:29 am – 8:32 pmShortest day (Dec 21): 9 h 18 min7:18 am – 4:36 pm
Sun todaySunrise –Sunset –
Natural hazardsOverall risk Relatively HighMercer County, NJ, compared with all US countiesHigher-risk hazardsStrong wind Very HighWinter weather Very HighIce storm Very HighRiver flooding Relatively HighSource: FEMA National Risk Index (county level)
Air quality70% of days had good air in 2025255 of 365 days measured104 moderate, 6 unhealthy for sensitive groups daysMedian index 43, worst day 126main pollutant: ozoneSource: US EPA Air Quality Index, Mercer County monitors, NJ
Drinking waterTrenton Water Worksserves 217,000 people from surface water1 health-based violation since 2021latest Oct 2024: trihalomethanes (TTHM), maximum contaminant level80 monitoring or reporting violations since 2021Source: US EPA Safe Drinking Water Information System, largest system serving the town
