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Dumfries, Virginia

Town in Prince William County, Virginia

Air quality

The air at Dumfries

Index 25, good, led by fine particles. Read at 12 AM from its reporting area, Northern Virginia (VA), 25 miles off.

25Good
  • Fine particles (PM2.5)25Good-
  • Ozone15Good-
  • Coarse particles (PM10)7Good-

The days ahead

Good each day through Sun Oct 18, led by fine particles. Yesterday measured 52, moderate.

Smoke, the next 44 hours

Little smoke near the ground through Sat 8 PM: the index from smoke stays at 11 or under.

FriSat

Precipitation

What has fallen at Dumfries

None in the last 3 days, to Thu 11 PM. Measured by radar and rain gauges, as water.

Last 24 hours
0.00in
Last 3 days
0.00in

Visibility

How far you can see at Dumfries, the next 44 hours

Visibility stays 7 miles or more through Sat 8 PM, lowest 8 miles Fri 7 AM.

FriSat

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

What is measuring near here

The 5 instruments nearest Dumfries, how far away each one is, how high it stands, and what kind of measurement it makes. The nearest is 2.4 miles away.

measured now3 instruments

measured daily2 instruments

Dale City 0.5 WNWVA-PW-2

In a volunteer observer's own ground/6.5 mi away/308 ft/274 ft above here

precip, snowfall, snow depth

Rank-

ManassasMNNV2

At a cooperative observer's station/14.9 mi away/256 ft/222 ft above here

snowfall, snow depth, precip, high, low

Rank-

Station report

The weather at Quantico Mcaf, drawn

The nearest airport reporting now, 4.4 mi from Dumfries, Virginia. From its report of Oct 16, 2026, 12:33 AM local time: 3 of its 6 sheets.

The sky

Overcast at 1,300 ft; the ceiling is 1,300 ft.

Section of the sky over Quantico Mcaf, height above the station to scale: overcast cloud with its base at 1,300 feet, the ceiling at 1,300 feet.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT NYGFIG. A THE SKY OVER QUANTICO MCAFSECTION, 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 STATION05001,0001,5002,0002,5003,000ETAGESLOWTHE STATIONTHE CEILOMETER READS TO 12,000 FT, ABOVE THIS SHEETOVC 1,300 FTOVERCAST, 8 EIGHTHS OF THE SKYCEILING 1,300 FTTITLEQuantico Mcaf, the skySTATION REPORT · ASOS NYGTYPESECTIONSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 1 of 6DATE2026-10-16IDSR-NYG-1DRAWN AS linework on paperSOURCES FB-SKY-001, FB-SKY-017, FB-SKY-016, FB-SKY-018

The air

63.0 F with a dew point of 60.0 F, 90 per cent relative humidity. Air lifted from the station would cool to its dew point, where cloud forms, about 700 ft up; the lowest cloud reported is at 1,300 ft.

Chart of the air at Quantico Mcaf: temperature 63.0 degrees Fahrenheit and dew point 60.0, 90 per cent relative humidity; air lifted from the station cools along the dry rate and meets its dew point about 700 feet above the station, against the lowest cloud reported at 1,300 feet; height to scale.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT NYGFIG. B THE AIR AT QUANTICO MCAFTHE REPORTED TEMPERATURE AND DEW POINT, AND AIR LIFTED FROM THE STATION WITHOUT MIXING UNTIL IT SATURATES; HEIGHT ABOVE THE STATION TO SCALEFT ABOVE THE STATION01,0002,0003,00050 F60 F70 FSATURATES 700 FT ABOVE THE STATION, AT 59.3 FLOWEST CLOUD REPORTED, OVC 1,300 FTTEMPERATURE 63.0 FDEW POINT 60.0 FSPREAD 3.0 FRELATIVE HUMIDITY 90 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 POINTTITLEQuantico Mcaf, the airSTATION REPORT · ASOS NYGTYPECHARTSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 2 of 6DATE2026-10-16IDSR-NYG-2DRAWN AS linework on paperSOURCES FB-WAT-020, FB-WAT-002, FB-ENG-011, FB-ENG-005

The wind

From the southwest (230 degrees) at 3 mph: force 1, a light air on the Beaufort scale.

Plan of the wind at Quantico Mcaf, north up: blowing from 230 degrees, the southwest, at 3 miles an hour; beside it the Beaufort scale from calm to hurricane force, force 1, light air, marked.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT NYGFIG. C THE WIND AT QUANTICO MCAFPLAN, NORTH UP: THE WIND AS REPORTED, AND WHERE IT SITS ON THE BEAUFORT SCALENESWTHE STATIONFROM 230°BEAUFORT FORCELEAST WIND, MPH0CALM01LIGHT AIR1NOW, 3 MPH2LIGHT BREEZE43GENTLE BREEZE84MODERATE BREEZE135FRESH BREEZE196STRONG BREEZE257NEAR GALE328GALE399STRONG GALE4710STORM5511VIOLENT STORM6412HURRICANE FORCE73TITLEQuantico Mcaf, the windSTATION REPORT · ASOS NYGTYPEPLAN north upSCALENOT TO SCALEREVAS REPORTED SHEET 3 of 6DATE2026-10-16IDSR-NYG-3DRAWN AS linework on paperSOURCES FB-EVT-150, FB-ENG-008, FB-INS-002

The full report of Quantico Mcaf, 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 Dumfries

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

Near Dumfries

River and lake gauges