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National, Maryland

Community in Allegany County, Maryland

Air quality

The air at National

Index 9, good, led by fine particles. Read at 1 AM from its reporting area, Western Maryland (MD), 2 miles off.

9Good
  • Fine particles (PM2.5)9Good7.6 mi
  • Ozone7Good9 ppb7.6 mi
  • Nitrogen dioxide4Good4.1 ppb7.6 mi
  • Sulfur dioxide0Good0.4 ppb7.6 mi

The days ahead

Good each day through Sun Oct 18, led by fine particles. Yesterday measured 21, good.

Smoke, the next 43 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 National

0.03 in in the last 24 hours, 0.18 in over the last 3 days, to Fri 1 AM. Measured by radar and rain gauges, as water.

Last 24 hours
0.03in
Last 3 days
0.18in

Visibility

How far you can see at National, the next 43 hours

Visibility stays 5 miles or more through Sat 8 PM, lowest 5 miles Fri 2 AM.

FriSat

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

What is measuring near here

The 6 instruments nearest National, how far away each one is, how high it stands, and what kind of measurement it makes. The nearest is 3.2 miles away.

measured now4 instruments

CumberlandCBE

At an airfield/9.5 mi away/775 ft/1,005 ft below here

temp, wind, gust, visibility, precip, pressure

Rank117of 736

measured daily2 instruments

Lonaconing 0.3 NNWMD-AL-8

In a volunteer observer's own ground/3.7 mi away/1,562 ft/218 ft below here

precip, snowfall, snow depth

Rank-

FrostburgFRSM2

At a cooperative observer's station/3.9 mi away/2,182 ft/402 ft above here

snowfall, snow depth, precip, high, low

Rank107of 736

Station report

The weather at Cumberland, drawn

The nearest airport reporting now, 9.5 mi from National, Maryland. From its report of Oct 16, 2026, 1:55 AM local time: 3 of its 6 sheets.

The sky

Overcast at 400 ft; the ceiling is 400 ft; visibility 4 mi.

Section of the sky over Cumberland, height above the station to scale: overcast cloud with its base at 400 feet, the ceiling at 400 feet, and visibility of 4 mi.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT CBEFIG. A THE SKY OVER CUMBERLANDSECTION, 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 400 FTOVERCAST, 8 EIGHTHS OF THE SKYCEILING 400 FTVISIBILITY, MILES: 4 MI0510TITLECumberland, the skySTATION REPORT · ASOS CBETYPESECTIONSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 1 of 6DATE2026-10-16IDSR-CBE-1DRAWN AS linework on paperSOURCES FB-SKY-001, FB-SKY-017, FB-SKY-016, FB-SKY-018

The air

57.2 F with a dew point of 56.0 F, 96 per cent relative humidity. Air lifted from the station would cool to its dew point, where cloud forms, about 300 ft up; the lowest cloud reported is at 400 ft.

Chart of the air at Cumberland: temperature 57.2 degrees Fahrenheit and dew point 56.0, 96 per cent relative humidity; air lifted from the station cools along the dry rate and meets its dew point about 300 feet above the station, against the lowest cloud reported at 400 feet; height to scale.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT CBEFIG. B THE AIR AT CUMBERLANDTHE REPORTED TEMPERATURE AND DEW POINT, AND AIR LIFTED FROM THE STATION WITHOUT MIXING UNTIL IT SATURATES; HEIGHT ABOVE THE STATION TO SCALEFT ABOVE THE STATION01,0002,0003,00040 F50 F60 F70 FSATURATES 300 FT ABOVE THE STATION, AT 55.7 FLOWEST CLOUD REPORTED, OVC 400 FTTEMPERATURE AND DEW POINT 57.2 F, 56.0 FRELATIVE HUMIDITY 96 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 POINTTITLECumberland, the airSTATION REPORT · ASOS CBETYPECHARTSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 2 of 6DATE2026-10-16IDSR-CBE-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 Cumberland, 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 CBEFIG. C THE WIND AT CUMBERLANDPLAN, 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 FORCE73TITLECumberland, the windSTATION REPORT · ASOS CBETYPEPLAN north upSCALENOT TO SCALEREVAS REPORTED SHEET 3 of 6DATE2026-10-16IDSR-CBE-3DRAWN AS linework on paperSOURCES FB-EVT-150, FB-ENG-008, FB-INS-002

The full report of Cumberland, in 6 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 National

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

Near National

River and lake gauges