Daylight through the yearLongest day (Jun 21): 14 h 54 min5:44 am – 8:38 pmShortest day (Dec 21): 9 h 26 min7:25 am – 4:51 pm
Sun todaySunrise –Sunset –
ClimateWarmest month July: highs 87°F, lows 67°FColdest month January: highs 42°F, lows 25°F45 in of rain a year, on about 77 dayswettest month May21 in of snow a year, on about 10 days32 days above 90°F, 119 nights below freezing in a typical yearSource: NOAA 1991-2020 Climate Normals, Wfo Sterling station, 1 mi away; snow from Washington Dc Dulles Ap
Nearby landmarksWashington and Old Dominion Railroad Regional Park Sterling / Pacific Boulevard Trailheadpark · 3.4 miStony Hillpeak · 1.6 miWashington and Old Dominion Railroad Regional Park Herndon Trailheadpark · 4.2 miHorsepen Pondlake · 1.0 miDulles Airport Pondlake · 1.2 miHorsepen Run Trailheadtrailhead · 3.9 miSource: USGS Geographic Names Information System
Parks and public landsLyndora Parkpark · 1.9 miBroad Run Stream Valley Parkpark · 2.1 miMckee Beshers Wmastate conservation land · 7.2 mi · 1,971 acresManassas National Battlefield Parkhistoric site · 9.8 mi · 4,419 acresISLANDS OF THE POTOMAC Wildlife Management Area - Islands of the Potomac Wildlandsstate conservation land · 8.8 mi · 457 acresSeneca Creek State Parkstate park · 11.1 miSource: 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 201020 mi away, near Barnesville, MarylandMost recent: magnitude 3.0 on 17 Jan 201631 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
Elevation256 ft78 m above sea levelSource: USGS 3D Elevation Program
Local servicesHospitalStone Springs Hospital Center4.7 miPost officeDulles Post Office1.2 miTown hallHerndon Municipal Center4.2 miPoliceLoudoun County Sheriff's Office Dulles South Station4.5 miFire stationMetropolitan Washington Airport Authority Fire and Rescue Station 304under a mileSource: USGS National Structures Dataset
SchoolsWithin 2 mi1 school1 otherSchoolFairfax Christian School1.9 miCollegeNorthern Virginia Community College - Loudoun Campus5.5 miSource: USGS National Structures Dataset
Getting aroundAirportWashington Dulles International Airport IAD1.8 miInterstateI-668.7 miUS highwayUS 504.1 miAmtrakBurke Centre, VA BCV15 miSubwayWashington Dulles International AirportWashington Metro1.3 miCoachDulles (Airport - IAD)Virginia Breeze, Operated by Dillon's1.3 miSources: OurAirports; US Census Bureau TIGER roads; Bureau of Transportation Statistics NTAD
Distances in these cards are measured from the centre of the 20167 ZIP area.
