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Fort Ritchie, Maryland

Community in Washington County, Maryland

Air quality

The air at Fort Ritchie

Index 16, good, led by ozone. Read at 11 PM from its reporting area, Maryland Piedmont (MD), 19 miles off.

16Good
  • Fine particles (PM2.5)-15 mi
  • Ozone16Good15 ppb15 mi

The days ahead

Good each day through Sun Oct 18, led by fine particles. Yesterday measured 42, good.

Smoke, the next 45 hours

Little smoke near the ground through Sat 8 PM: the index from smoke stays at 6 or under.

FriSat

Precipitation

What has fallen at Fort Ritchie

0.10 in in the last 24 hours, 0.11 in over the last 3 days, to Thu 11 PM. Measured by radar and rain gauges, as water.

Last 24 hours
0.10in
Last 3 days
0.11in

Visibility

How far you can see at Fort Ritchie, the next 45 hours

Mist or haze: visibility falls to 3 miles Fri 4 AM.

FriSat

On the radar over Fort Ritchie, MarylandReflectivityStorm topsRain rateRain, last 24 hoursForecast temperatureForecast rain totalEvery picture

What is measuring near here

The 6 instruments nearest Fort Ritchie, how far away each one is, how high it stands, and what kind of measurement it makes. The nearest is 1.6 miles away.

measured now4 instruments

Camp DavidRSP

At an airfield/4.5 mi away/1,841 ft/474 ft above here

temp, wind, gust, visibility, precip, pressure

Rank709of 736

measured daily2 instruments

Smithsburg 3.1 NNEMD-WH-25

In a volunteer observer's own ground/2.7 mi away/771 ft/596 ft below here

precip, snowfall, snow depth

Rank-

EmmitsburgEMMM2

At a cooperative observer's station/10.9 mi away/367 ft/1,000 ft below here

snowfall, snow depth, precip, high, low

Rank561of 736

Station report

The weather at Citizen station FW7923, drawn

The nearest instrument reporting now, 1.6 mi from Fort Ritchie, Maryland. From its report of undefined: 3 of its 4 sheets.

The wind

Calm.

Plan of the wind at Citizen station FW7923, 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 FW7923FIG. C THE WIND AT CITIZEN STATION FW7923PLAN, 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 FORCE73TITLECitizen station FW7923, the windSTATION REPORT · CWOP FW7923TYPEPLAN north upSCALENOT TO SCALEREVAS REPORTED SHEET 1 of 4DATE2026-10-16IDSR-FW7923-1DRAWN AS linework on paperSOURCES FB-EVT-150, FB-ENG-008

The column

At 1,385 ft above sea level, 5 per cent of the atmosphere's air lies below the station. The standard atmosphere puts the pressure there at 28.45 inHg and the temperature at 54.1 F; the station's altimeter setting of 30.15 inHg means its barometer reads 28.67 inHg; it reports 54.0 F, 0.1 F colder than standard.

Section from sea level of where Citizen station FW7923 stands in the atmosphere, height to scale: the station 1,385 feet above sea level with 5 per cent of the air below it; the standard atmosphere's pressure there, 28.45 inches of mercury, and temperature, 54.1 degrees Fahrenheit; the altimeter setting of 30.15 and the station pressure it means, 28.67.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT FW7923FIG. D WHERE CITIZEN STATION FW7923 STANDS IN THE ATMOSPHERESECTION FROM SEA LEVEL, HEIGHT TO SCALE, THE STATION IN THE STANDARD ATMOSPHEREFT ABOVE SEA LEVEL05,00010,00015,000SEA LEVEL, 29.92 inHg IN THE STANDARD ATMOSPHERECITIZEN STATION FW79235 PER CENT OF THE AIR BELOW IT1,385 FT10 PER CENT OF THE AIR BELOW, 2,890 FT20 PER CENT OF THE AIR BELOW, 6,050 FT30 PER CENT OF THE AIR BELOW, 9,540 FT40 PER CENT OF THE AIR BELOW, 13,470 FTSTANDARD PRESSURE HERE28.45 inHgSTANDARD TEMPERATURE HERE54.1 FALTIMETER SETTING, REPORTED30.15 inHgITS BAROMETER READS28.67 inHgTEMPERATURE, REPORTED54.0 FTITLECitizen station FW7923, the columnSTATION REPORT · CWOP FW7923TYPESECTIONSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 2 of 4DATE2026-10-16IDSR-FW7923-2DRAWN AS linework on paperSOURCES FB-ENG-001, FB-ENG-003

The sun

On Oct 16 the noon sun stands 41 degrees above the horizon at 39.72 N, and the day is 10 h 59 min long. Level ground there takes 66 per cent of the noon sunlight a surface facing the sun would.

Elevation of the noon sun at Citizen station FW7923, angles true: on Oct 16 it stands 41 degrees above the horizon, against 74 at the June solstice, 50 at the equinoxes and 27 at the December solstice; the day is 10 h 59 min long.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT FW7923FIG. E THE SUN AT CITIZEN STATION FW7923ELEVATION LOOKING WEST, SOUTH TO THE LEFT: THE NOON SUN ON THE DAY OF THE REPORT, AND AT THE SOLSTICES AND EQUINOXES; ANGLES TRUETHE STATIONJUNE SOLSTICE 74°EQUINOXES 50°DECEMBER SOLSTICE 27°OCT 16, 41°SOUTHANGLES TRUE; THE RAYS ARE OF ONE LENGTH AND DRAW DIRECTION ONLYDAY LENGTH 10 H 59 MINLEVEL GROUND TAKES 66 PER CENT OF THE NOON SUN A FACING SURFACE WOULDLATITUDE 39.72 N; THE SUN'S DECLINATION -9.1°TITLECitizen station FW7923, the sunSTATION REPORT · CWOP FW7923TYPEELEVATIONSCALEANGLES TRUEREVAS REPORTED SHEET 3 of 4DATE2026-10-16IDSR-FW7923-3DRAWN AS linework on paperSOURCES FB-ENG-007

The full report of Citizen station FW7923, in 4 sheets, each beside the Field Book plates that explain it

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Snow on the ground

Elsewhere in Maryland

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

Near Fort Ritchie

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

Near Fort Ritchie

River and lake gauges