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Gainesville, Virginia

Community in Prince William County, Virginia

Air quality

The air at Gainesville

Index 29, good, led by ozone. Read at 12 AM from its reporting area, Northern Virginia (VA), 12 miles off.

29Good
  • Fine particles (PM2.5)26Good-
  • Ozone29Good-
  • Coarse particles (PM10)6Good-

The days ahead

Good each day through Wed Oct 21, led by fine particles. Yesterday measured 28, good.

Smoke, the next 45 hours

No smoke near the ground through Sun 8 PM.

SatSun

Precipitation

What has fallen at Gainesville

0.18 in in the last 24 hours, 0.19 in over the last 3 days, to Fri 11 PM. Measured by radar and rain gauges, as water.

Last 24 hours
0.18in
Last 3 days
0.19in

Visibility

How far you can see at Gainesville, the next 45 hours

Visibility stays 3 miles or more through Sun 8 PM, lowest 4 miles Sat 3 AM.

SatSun

On the radar over Gainesville, VirginiaReflectivityStorm topsRain rateRain, last 24 hoursForecast temperatureForecast rain totalEvery picture

What is measuring near here

The 5 instruments nearest Gainesville, how far away each one is, how high it stands, and what kind of measurement it makes. The nearest is 0.6 miles away.

measured now3 instruments

measured daily2 instruments

Haymarket 0.6 SSWVA-PW-5

In a volunteer observer's own ground/1.1 mi away/384 ft/25 ft above here

precip, snowfall, snow depth

Rank-

ManassasMNNV2

At a cooperative observer's station/8.6 mi away/256 ft/103 ft below here

snowfall, snow depth, precip, high, low

Rank-

Station report

The weather at Manassas Muni(AWOS), drawn

The nearest airport reporting now, 8.0 mi from Gainesville, Virginia. From its report of Oct 16, 2026, 11:56 PM local time: 3 of its 6 sheets.

The sky

Overcast at 8,000 ft; the ceiling is 8,000 ft; visibility 10 mi or more.

Section of the sky over Manassas Muni(AWOS), height above the station to scale: overcast cloud with its base at 8,000 feet, the ceiling at 8,000 feet, and visibility of 10 mi or more.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT HEFFIG. A THE SKY OVER MANASSAS MUNI(AWOS)SECTION, HEIGHT ABOVE THE STATION TO SCALE, EACH LAYER AT THE HEIGHT OF ITS BASE AS REPORTED; COVER IN EIGHTHS OF THE SKY; TOPS NOT MEASUREDFT ABOVE THE STATION02,5005,0007,50010,00012,500ETAGESLOWMIDDLETHE STATIONTHE CEILOMETER READS TO 12,000 FTOVC 8,000 FTOVERCAST, 8 EIGHTHS OF THE SKYCEILING 8,000 FTVISIBILITY, MILES: 10 MI OR MORE0510TITLEManassas Muni(AWOS), the skySTATION REPORT · ASOS HEFTYPESECTIONSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 1 of 6DATE2026-10-17IDSR-HEF-1DRAWN AS linework on paperSOURCES FB-SKY-001, FB-SKY-013, FB-SKY-014

The air

64.0 F with a dew point of 51.0 F, 63 per cent relative humidity. Air lifted from the station would cool to its dew point, where cloud forms, about 3,000 ft up; the lowest cloud reported is at 8,000 ft.

Chart of the air at Manassas Muni(AWOS): temperature 64.0 degrees Fahrenheit and dew point 51.0, 63 per cent relative humidity; air lifted from the station cools along the dry rate and meets its dew point about 3,000 feet above the station, against the lowest cloud reported at 8,000 feet; height to scale.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT HEFFIG. B THE AIR AT MANASSAS MUNI(AWOS)THE REPORTED TEMPERATURE AND DEW POINT, AND AIR LIFTED FROM THE STATION WITHOUT MIXING UNTIL IT SATURATES; HEIGHT ABOVE THE STATION TO SCALEFT ABOVE THE STATION02,0004,0006,0008,00010,00040 F50 F60 F70 FSATURATES 3,000 FT ABOVE THE STATION, AT 48.1 FLOWEST CLOUD REPORTED, OVC 8,000 FTTEMPERATURE 64.0 FDEW POINT 51.0 FSPREAD 13.0 FRELATIVE HUMIDITY 63 PER CENTTHE AIR COOLS ABOUT 5.4 F EACH 1,000 FT IT RISES, AND ITS DEW POINT ABOUT 1 FSOLID: THE LIFTED AIR'S TEMPERATURE; DASHED: ITS DEW POINTTITLEManassas Muni(AWOS), the airSTATION REPORT · ASOS HEFTYPECHARTSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 2 of 6DATE2026-10-17IDSR-HEF-2DRAWN AS linework on paperSOURCES FB-WAT-002, FB-ENG-011, FB-ENG-005

The wind

From the north (350 degrees) at 17 mph, gusting 23 mph: force 4, a moderate breeze on the Beaufort scale. The strongest gust today was 33 mph.

Plan of the wind at Manassas Muni(AWOS), north up: blowing from 350 degrees, the north, at 17 miles an hour, gusting 23; beside it the Beaufort scale from calm to hurricane force, force 4, moderate breeze, marked.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT HEFFIG. C THE WIND AT MANASSAS MUNI(AWOS)PLAN, NORTH UP: THE WIND AS REPORTED, AND WHERE IT SITS ON THE BEAUFORT SCALENESWTHE STATIONFROM 350°BEAUFORT FORCELEAST WIND, MPH0CALM01LIGHT AIR12LIGHT BREEZE43GENTLE BREEZE84MODERATE BREEZE13NOW, 17 MPH5FRESH BREEZE19GUST, 23 MPH6STRONG BREEZE257NEAR GALE328GALE399STRONG GALE4710STORM5511VIOLENT STORM6412HURRICANE FORCE73TITLEManassas Muni(AWOS), the windSTATION REPORT · ASOS HEFTYPEPLAN north upSCALENOT TO SCALEREVAS REPORTED SHEET 3 of 6DATE2026-10-17IDSR-HEF-3DRAWN AS linework on paperSOURCES FB-EVT-150, FB-ENG-008, FB-INS-002

The full report of Manassas Muni(AWOS), in 6 sheets, each beside the Field Book plates that explain it

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Snow on the ground

Elsewhere in Virginia

16 places, each with its own forecast and its own instruments.

Near Gainesville

The nearest places, each with its own forecast and the instruments nearest it.

Near Gainesville

River and lake gauges