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Opal, Virginia

Community in Fauquier County, Virginia

Air quality

The air at Opal

Index 25, good, led by fine particles. Read at 12 AM from its reporting area, Northern Virginia (VA), 26 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 45 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 Opal

0.07 in in the last 24 hours, and none in the 2 days before, to Thu 11 PM. Measured by radar and rain gauges, as water.

Last 24 hours
0.07in
Last 3 days
0.07in

Visibility

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

Visibility stays 3 miles or more through Sat 8 PM, lowest 4 miles Fri 7 PM.

FriSat

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

What is measuring near here

The 6 instruments nearest Opal, how far away each one is, how high it stands, and what kind of measurement it makes. The nearest is 0.5 miles away.

measured now4 instruments

measured daily2 instruments

ManassasMNNV2

At a cooperative observer's station/18.1 mi away/256 ft/184 ft below here

snowfall, snow depth, precip, high, low

Rank-

Station report

The weather at Warrenton, drawn

The nearest airport reporting now, 5.5 mi from Opal, Virginia. From its report of Oct 16, 2026, 12:35 AM local time: 3 of its 6 sheets.

The sky

Overcast at 1,300 ft; the ceiling is 1,300 ft; visibility 10 mi or more.

Section of the sky over Warrenton, height above the station to scale: overcast cloud with its base at 1,300 feet, the ceiling at 1,300 feet, and visibility of 10 mi or more.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT HWYFIG. A THE SKY OVER WARRENTONSECTION, 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 FTVISIBILITY, MILES: 10 MI OR MORE0510TITLEWarrenton, the skySTATION REPORT · ASOS HWYTYPESECTIONSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 1 of 6DATE2026-10-16IDSR-HWY-1DRAWN AS linework on paperSOURCES FB-SKY-001, FB-SKY-017, FB-SKY-016, FB-SKY-018

The air

60.8 F with a dew point of 58.0 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 Warrenton: temperature 60.8 degrees Fahrenheit and dew point 58.0, 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 HWYFIG. B THE AIR AT WARRENTONTHE 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 57.3 FLOWEST CLOUD REPORTED, OVC 1,300 FTTEMPERATURE AND DEW POINT 60.8 F, 58.0 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 POINTTITLEWarrenton, the airSTATION REPORT · ASOS HWYTYPECHARTSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 2 of 6DATE2026-10-16IDSR-HWY-2DRAWN AS linework on paperSOURCES FB-WAT-020, FB-WAT-002, FB-ENG-011, FB-ENG-005

The wind

Calm.

Plan of the wind at Warrenton, north up: calm; beside it the Beaufort scale from calm to hurricane force, force 0, calm, marked.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT HWYFIG. C THE WIND AT WARRENTONPLAN, NORTH UP: THE WIND AS REPORTED, AND WHERE IT SITS ON THE BEAUFORT SCALENESWTHE STATIONCALMBEAUFORT FORCELEAST WIND, MPH0CALM0NOW, 0 MPH1LIGHT AIR12LIGHT BREEZE43GENTLE BREEZE84MODERATE BREEZE135FRESH BREEZE196STRONG BREEZE257NEAR GALE328GALE399STRONG GALE4710STORM5511VIOLENT STORM6412HURRICANE FORCE73TITLEWarrenton, the windSTATION REPORT · ASOS HWYTYPEPLAN north upSCALENOT TO SCALEREVAS REPORTED SHEET 3 of 6DATE2026-10-16IDSR-HWY-3DRAWN AS linework on paperSOURCES FB-EVT-150, FB-ENG-008, FB-INS-002

The full report of Warrenton, 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 Opal

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

Near Opal

River and lake gauges