Daylight through the yearLongest day (Jun 21): 14 h 55 min5:44 am – 8:40 pmShortest day (Dec 21): 9 h 25 min7:26 am – 4:51 pm
Sun todaySunrise –Sunset –
ClimateWarmest month July: highs 86°F, lows 66°FColdest month January: highs 41°F, lows 25°F44 in of rain a yearwettest month September21 in of snow a year, on about 10 days30 days above 90°F, 115 nights below freezing in a typical yearSource: NOAA 1991-2020 Climate Normals, Purcellville station, 5 mi away; snow from Washington Dc Dulles Ap
Nearby landmarksOliver Lakelake · 1.7 miKingsley Lakelake · 2.0 miHogback Mountainpeak · 2.2 miPatrick Henry Collegecollege · 4.4 miWashington and Old Dominion Railroad Regional Park Leesburg Trailheadpark · 5.0 miVesper Hillpeak · 3.1 miSource: USGS Geographic Names Information System
Parks and public landsScott Jenkins Memorial Parkpark · 3.5 miFreedom Parkpark · 3.9 miBall's Bluff National Cemeteryhistoric site · 7.1 miShannondale Springs Wildlife Management Areastate conservation land · 11.5 mi · 1,640 acresIslands Of The Potomac Wmastate conservation land · 11.8 mi · 335 acresSweet Run State Parkstate park · 14.2 mi · 604 acresSource: USGS Protected Areas Database (PAD-US)
Earthquakes2 of magnitude 3 or more within 50 miles since 19700 of magnitude 4+, 0 of magnitude 5+Largest: magnitude 3.6 on 16 Jul 201018 mi away, near Barnesville, MarylandMost recent: magnitude 3.0 on 17 Jan 201619 mi awaySource: USGS Earthquake Catalog
Natural hazardsOverall risk Relatively LowLoudoun County, VA, compared with all US countiesHigher-risk hazardsWinter weather Relatively HighLightning Relatively HighStrong wind Relatively HighSource: FEMA National Risk Index (county level)
Air quality81% of days had good air in 2025294 of 365 days measured70 moderate, 1 unhealthy for sensitive groups daysMedian index 40, worst day 120main pollutant: ozoneSource: US EPA Air Quality Index, Loudoun County monitors, VA
Drinking waterLoudoun Water - Central Systemserves 334,808 people from surface waterNo health-based violations since 20211 monitoring or reporting violation since 2021Source: US EPA Safe Drinking Water Information System, largest system in the county
Elevation628 ft191 m above sea levelSource: USGS 3D Elevation Program
Local servicesHospitalInova Loudoun Hospital9.0 miPost officeHamilton Post Office3.6 miTown hallHamilton Town Hall3.5 miPoliceVirginia State Police Division 7 Area 10 Office5.0 miFire stationHamilton Volunteer Fire Department Station 53.4 miSource: USGS National Structures Dataset
SchoolsWithin 2 miNo schools listedCollegePatrick Henry College4.4 miSource: USGS National Structures Dataset
Getting aroundAirportWashington Dulles International Airport IAD14 miInterstateI-6618 miUS highwayUS 152.2 miAmtrakManassas, VA MSS25 miSubwayAshburnWashington Metro9.9 miCoachSterling, VA (Dulles Town Center Park and Ride Lot)OurBus12 miSources: OurAirports; US Census Bureau TIGER roads; Bureau of Transportation Statistics NTAD
Distances in these cards are measured from the centre of the 20104 ZIP area.
