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 88°F, lows 67°FColdest month January: highs 43°F, lows 25°F43 in of rain a year, on about 74 dayswettest month May21 in of snow a year, on about 10 days33 days above 90°F, 102 nights below freezing in a typical yearSource: NOAA 1991-2020 Climate Normals, Washington Dc Dulles Ap station, 4 mi away
Nearby landmarksRock Hillpeak · 2.6 miChantilly Lakelake · 3.5 miQuail Ridge Lakelake · 4.2 miNorthern Virginia Community College - Manassas Campuscollege · 6.2 miWalney Visitor Centervisitor center · 5.4 miHenry Hill Visitor Centervisitor center · 6.0 miSource: USGS Geographic Names Information System
Parks and public landsConklin Parkpark · under a mileSouth Riding Park Sitepark · 1.3 miManassas National Battlefield Parkhistoric site · 4.3 mi · 4,419 acresBull Run Mountains State Natural Area Preservestate conservation land · 8.5 mi · 2,567 acresLake Brittle Public Fishing Lakestate recreation area · 13.7 mi · 70 acresMckee Beshers Wmastate conservation land · 12.9 mi · 1,971 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 201026 mi away, near Barnesville, MarylandMost recent: magnitude 3.0 on 17 Jan 201633 mi awaySource: USGS Earthquake Catalog
Natural hazardsOverall risk Very LowFairfax City, VA, compared with all US countiesHighest-rated hazardsHurricane Relatively LowHeat wave Relatively LowSource: FEMA National Risk Index (county level)
Air quality78% of days had good air in 2025284 of 365 days measured80 moderate, 1 unhealthy for sensitive groups daysMedian index 42, worst day 124main pollutant: ozoneSource: US EPA Air Quality Index, Fairfax County monitors, VA
Drinking waterFairfax County Water Authorityserves 1,121,613 people from surface waterNo health-based violations since 2021Source: US EPA Safe Drinking Water Information System, largest system in the county
Elevation302 ft92 m above sea levelSource: USGS 3D Elevation Program
Local servicesHospitalStone Springs Hospital Center3.1 miPost officeCatharpin Post Office4.2 miTown hallHerndon Municipal Center8.7 miPoliceLoudoun County Sheriff's Office Dulles South Station1.4 miFire stationDulles South Public Safety Center Station 191.4 miSource: USGS National Structures Dataset
SchoolsWithin 2 mi8 schools5 elementary, 1 middle, 2 highElementaryCardinal Ridge Elementary Schoolunder a mileMiddleJ Michael Lunsford Middle Schoolunder a mileElementaryHutchison Farm Elementary School1.0 miCollegeNorthern Virginia Community College - Manassas Campus6.2 miSource: USGS National Structures Dataset
Getting aroundAirportWashington Dulles International Airport IAD4.6 miInterstateI-665.7 miUS highwayUS 502.6 miAmtrakManassas, VA MSS11 miSubwayWashington Dulles International AirportWashington Metro5.3 miCoachDulles Airport, VA (Dulles International Airport, Arrivals level Curb 2A. Bus stops in area marked for shared pickup and public buses.)OurBus5.3 miSources: OurAirports; US Census Bureau TIGER roads; Bureau of Transportation Statistics NTAD
Distances in these cards are measured from the centre of the 20153 ZIP area.
