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Williamsport, Maryland

Town in Washington County, Maryland

Air quality

The air at Williamsport

Index 34, good, led by ozone. Read at 8 PM from its reporting area, Hagerstown Region (MD), 5 miles off.

34Good
  • Ozone34Good33 ppb5.7 mi

The days ahead

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

Smoke, the next 42 hours

No smoke near the ground through Sun 2 PM.

SatSun

Precipitation

What has fallen at Williamsport

0.02 in in the last 24 hours, 0.07 in over the last 3 days, to Fri 8 PM. Measured by radar and rain gauges, as water.

Last 24 hours
0.02in
Last 3 days
0.07in

Visibility

How far you can see at Williamsport, the next 42 hours

Visibility stays 10 miles or more through Sun 2 PM.

SatSun

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

What is measuring near here

The 6 instruments nearest Williamsport, how far away each one is, how high it stands, and what kind of measurement it makes. The nearest is 2.0 miles away.

measured now4 instruments

I-70 @ I-81MD011

Beside a road/2.2 mi away/499 ft/63 ft above here

temp, pavement temp, wind, visibility, precip

Rank331of 742

measured daily2 instruments

WilliamsportWLLM2

At a cooperative observer's station/2.0 mi away/541 ft/105 ft above here

snowfall, snow depth, precip, high, low

Rank58of 742

Station report

The weather at Hagerstown Regional, drawn

The nearest airport reporting now, 8.9 mi from Williamsport, Maryland. From its report of Oct 16, 2026, 8:53 PM local time: 3 of its 6 sheets.

The sky

Broken at 10,000 ft, overcast at 12,000 ft; the ceiling is 10,000 ft; visibility 10 mi or more.

Section of the sky over Hagerstown Regional, height above the station to scale: broken cloud with its base at 10,000 feet, overcast cloud with its base at 12,000 feet, the ceiling at 10,000 feet, and visibility of 10 mi or more.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT HGRFIG. A THE SKY OVER HAGERSTOWN REGIONALSECTION, 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 STATION02,5005,0007,50010,00012,50015,00017,50020,000ETAGESLOWMIDDLEHIGHTHE STATIONTHE CEILOMETER READS TO 12,000 FTOVC 12,000 FTOVERCAST, 8 EIGHTHS OF THE SKYBKN 10,000 FTBROKEN, 5 TO 7 EIGHTHS OF THE SKYCEILING 10,000 FTVISIBILITY, MILES: 10 MI OR MORE0510TITLEHagerstown Regional, the skySTATION REPORT · ASOS HGRTYPESECTIONSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 1 of 6DATE2026-10-17IDSR-HGR-1DRAWN AS linework on paperSOURCES FB-SKY-001, FB-SKY-013, FB-SKY-014

The air

62.0 F with a dew point of 52.0 F, 70 per cent relative humidity. Air lifted from the station would cool to its dew point, where cloud forms, about 2,300 ft up; the lowest cloud reported is at 10,000 ft.

Chart of the air at Hagerstown Regional: temperature 62.0 degrees Fahrenheit and dew point 52.0, 70 per cent relative humidity; air lifted from the station cools along the dry rate and meets its dew point about 2,300 feet above the station, against the lowest cloud reported at 10,000 feet; height to scale.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT HGRFIG. B THE AIR AT HAGERSTOWN REGIONALTHE REPORTED TEMPERATURE AND DEW POINT, AND AIR LIFTED FROM THE STATION WITHOUT MIXING UNTIL IT SATURATES; HEIGHT ABOVE THE STATION TO SCALEFT ABOVE THE STATION02,0004,0006,0008,00040 F50 F60 F70 FSATURATES 2,300 FT ABOVE THE STATION, AT 49.7 FABOVE THIS SHEET: LOWEST CLOUD REPORTED, BKN 10,000 FTTEMPERATURE 62.0 FDEW POINT 52.0 FSPREAD 10.0 FRELATIVE HUMIDITY 70 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 POINTTITLEHagerstown Regional, the airSTATION REPORT · ASOS HGRTYPECHARTSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 2 of 6DATE2026-10-17IDSR-HGR-2DRAWN AS linework on paperSOURCES FB-WAT-002, FB-ENG-011, FB-ENG-005

The wind

From the northwest (310 degrees) at 5 mph: force 2, a light breeze on the Beaufort scale. The strongest gust today was 45 mph.

Plan of the wind at Hagerstown Regional, north up: blowing from 310 degrees, the northwest, at 5 miles an hour; beside it the Beaufort scale from calm to hurricane force, force 2, light breeze, marked.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT HGRFIG. C THE WIND AT HAGERSTOWN REGIONALPLAN, NORTH UP: THE WIND AS REPORTED, AND WHERE IT SITS ON THE BEAUFORT SCALENESWTHE STATIONFROM 310°BEAUFORT FORCELEAST WIND, MPH0CALM01LIGHT AIR12LIGHT BREEZE4NOW, 5 MPH3GENTLE BREEZE84MODERATE BREEZE135FRESH BREEZE196STRONG BREEZE257NEAR GALE328GALE399STRONG GALE4710STORM5511VIOLENT STORM6412HURRICANE FORCE73TITLEHagerstown Regional, the windSTATION REPORT · ASOS HGRTYPEPLAN north upSCALENOT TO SCALEREVAS REPORTED SHEET 3 of 6DATE2026-10-17IDSR-HGR-3DRAWN AS linework on paperSOURCES FB-EVT-150, FB-ENG-008, FB-INS-002

The full report of Hagerstown Regional, 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 Williamsport

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

Near Williamsport

River and lake gauges