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Port Royal, Virginia

Town in Caroline County, Virginia

Air quality

The air at Port Royal

Index 26, good, led by ozone. Read at 4 PM from its reporting area, Southern Maryland (MD), 27 miles off.

26Good
  • Ozone26Good33 ppb10.4 mi

The days ahead

Good each day through Wed Oct 21, led by fine particles. Yesterday measured 20, good.

Smoke, the next 41 hours

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

FriSatSun

Precipitation

What has fallen at Port Royal

0.18 in in the last 24 hours, 0.20 in over the last 3 days, to Fri 3 PM. Measured by radar and rain gauges, as water.

Last 24 hours
0.18in
Last 3 days
0.20in

Visibility

How far you can see at Port Royal, the next 41 hours

Mist or haze: visibility falls to 2 miles Fri 9 PM.

FriSatSun

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

What is measuring near here

The 5 instruments nearest Port Royal, how far away each one is, how high it stands, and what kind of measurement it makes. The nearest is 9.6 miles away.

measured now3 instruments

measured daily2 instruments

CorbinCORV2

At a cooperative observer's station/10.1 mi away/210 ft/175 ft above here

snowfall, snow depth, precip, high, low

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Station report

The weather at Shannon Arpt, drawn

The nearest airport reporting now, 15.5 mi from Port Royal, Virginia. From its report of Oct 16, 2026, 4:15 PM local time: 3 of its 6 sheets.

The sky

No cloud below 12,000 ft; visibility 10 mi or more.

Section of the sky over Shannon Arpt, height above the station to scale: no cloud detected below 12,000 feet, the reach of its ceilometer, and visibility of 10 mi or more.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT EZFFIG. A THE SKY OVER SHANNON ARPTSECTION, 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 SHEETNO CLOUD DETECTED BELOW 12,000 FTVISIBILITY, MILES: 10 MI OR MORE0510TITLEShannon Arpt, the skySTATION REPORT · ASOS EZFTYPESECTIONSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 1 of 6DATE2026-10-16IDSR-EZF-1DRAWN AS linework on paperSOURCES FB-SKY-001

The air

84.0 F with a dew point of 69.0 F, 61 per cent relative humidity. Air lifted from the station would cool to its dew point, where cloud forms, about 3,500 ft up.

Chart of the air at Shannon Arpt: temperature 84.0 degrees Fahrenheit and dew point 69.0, 61 per cent relative humidity; air lifted from the station cools along the dry rate and meets its dew point about 3,500 feet above the station; height to scale.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT EZFFIG. B THE AIR AT SHANNON ARPTTHE REPORTED TEMPERATURE AND DEW POINT, AND AIR LIFTED FROM THE STATION WITHOUT MIXING UNTIL IT SATURATES; HEIGHT ABOVE THE STATION TO SCALEFT ABOVE THE STATION01,0002,0003,0004,0005,00050 F60 F70 F80 F90 FSATURATES 3,500 FT ABOVE THE STATION, AT 65.4 FTEMPERATURE 84.0 FDEW POINT 69.0 FSPREAD 15.0 FRELATIVE HUMIDITY 61 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 POINTTITLEShannon Arpt, the airSTATION REPORT · ASOS EZFTYPECHARTSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 2 of 6DATE2026-10-16IDSR-EZF-2DRAWN AS linework on paperSOURCES FB-WAT-002, FB-ENG-011, FB-ENG-005

The wind

From the south southwest (210 degrees) at 14 mph: force 4, a moderate breeze on the Beaufort scale. The strongest gust today was 16 mph.

Plan of the wind at Shannon Arpt, north up: blowing from 210 degrees, the south southwest, at 14 miles an hour; beside it the Beaufort scale from calm to hurricane force, force 4, moderate breeze, marked.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT EZFFIG. C THE WIND AT SHANNON ARPTPLAN, NORTH UP: THE WIND AS REPORTED, AND WHERE IT SITS ON THE BEAUFORT SCALENESWTHE STATIONFROM 210°BEAUFORT FORCELEAST WIND, MPH0CALM01LIGHT AIR12LIGHT BREEZE43GENTLE BREEZE84MODERATE BREEZE13NOW, 14 MPH5FRESH BREEZE196STRONG BREEZE257NEAR GALE328GALE399STRONG GALE4710STORM5511VIOLENT STORM6412HURRICANE FORCE73TITLEShannon Arpt, the windSTATION REPORT · ASOS EZFTYPEPLAN north upSCALENOT TO SCALEREVAS REPORTED SHEET 3 of 6DATE2026-10-16IDSR-EZF-3DRAWN AS linework on paperSOURCES FB-EVT-150, FB-ENG-008, FB-INS-002

The full report of Shannon Arpt, 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 Port Royal

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

Near Port Royal

River and lake gauges