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Perryman, Maryland

Community in Harford County, Maryland

Air quality

The air at Perryman

Index 19, good, led by ozone. Read at 8 AM from its reporting area, Northeast Maryland (MD), 15 miles off.

19Good
  • Fine particles (PM2.5)11Good5.4 mi
  • Ozone19Good16 ppb5.4 mi
  • Nitrogen dioxide6Good6.6 ppb17.1 mi
  • Sulfur dioxide0Good0.3 ppb17.1 mi

The days ahead

Good each day through Sun Oct 18, led by fine particles. Yesterday measured 26, good.

Smoke, the next 42 hours

Little smoke near the ground through Sun 2 AM: the index from smoke stays at 6 or under.

FriSat

Precipitation

What has fallen at Perryman

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

Last 24 hours
0.06in
Last 3 days
0.07in

Visibility

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

Visibility stays 7 miles or more through Sun 2 AM, lowest 8 miles Fri 9 AM.

FriSat

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

What is measuring near here

The 6 instruments nearest Perryman, 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

measured daily2 instruments

Abingdon 1.7 EMD-HR-38

In a volunteer observer's own ground/1.6 mi away/-6 ft/41 ft below here

precip, snowfall, snow depth

Rank-

ConowingoCNWM2

At a cooperative observer's station/13.1 mi away/23 ft/12 ft below here

snowfall, snow depth, precip, high, low

Rank-

Station report

The weather at Phillips AAF/Aberdn, drawn

The nearest airport reporting now, 2.5 mi from Perryman, Maryland. From its report of Oct 16, 2026, 8:55 AM local time: 3 of its 6 sheets.

The sky

Broken at 200 ft, overcast at 700 ft; the ceiling is 200 ft; visibility 2 mi.

Section of the sky over Phillips AAF/Aberdn, height above the station to scale: broken cloud with its base at 200 feet, overcast cloud with its base at 700 feet, the ceiling at 200 feet, and visibility of 2 mi.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT APGFIG. A THE SKY OVER PHILLIPS AAF/ABERDNSECTION, 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 STATIONOVC 700 FTOVERCAST, 8 EIGHTHS OF THE SKYBKN 200 FTBROKEN, 5 TO 7 EIGHTHS OF THE SKYCEILING 200 FTVISIBILITY, MILES: 2 MI0510TITLEPhillips AAF/Aberdn, the skySTATION REPORT · ASOS APGTYPESECTIONSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 1 of 6DATE2026-10-16IDSR-APG-1DRAWN AS linework on paperSOURCES FB-SKY-001, FB-SKY-017, FB-SKY-016, FB-SKY-018

The air

64.4 F with a dew point of 64.0 F, 99 per cent relative humidity. Air lifted from the station would cool to its dew point, where cloud forms, about 100 ft up; the lowest cloud reported is at 200 ft.

Chart of the air at Phillips AAF/Aberdn: temperature 64.4 degrees Fahrenheit and dew point 64.0, 99 per cent relative humidity; air lifted from the station cools along the dry rate and meets its dew point about 100 feet above the station, against the lowest cloud reported at 200 feet; height to scale.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT APGFIG. B THE AIR AT PHILLIPS AAF/ABERDNTHE 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 F80 FSATURATES 100 FT ABOVE THE STATION, AT 63.9 FLOWEST CLOUD REPORTED, BKN 200 FTTEMPERATURE AND DEW POINT 64.4 F, 64.0 FRELATIVE HUMIDITY 99 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 POINTTITLEPhillips AAF/Aberdn, the airSTATION REPORT · ASOS APGTYPECHARTSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 2 of 6DATE2026-10-16IDSR-APG-2DRAWN AS linework on paperSOURCES FB-WAT-020, FB-WAT-002, FB-ENG-011, FB-ENG-005

The wind

From the south southwest (210 degrees) at 7 mph: force 2, a light breeze on the Beaufort scale.

Plan of the wind at Phillips AAF/Aberdn, north up: blowing from 210 degrees, the south southwest, at 7 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 APGFIG. C THE WIND AT PHILLIPS AAF/ABERDNPLAN, NORTH UP: THE WIND AS REPORTED, AND WHERE IT SITS ON THE BEAUFORT SCALENESWTHE STATIONFROM 210°BEAUFORT FORCELEAST WIND, MPH0CALM01LIGHT AIR12LIGHT BREEZE4NOW, 7 MPH3GENTLE BREEZE84MODERATE BREEZE135FRESH BREEZE196STRONG BREEZE257NEAR GALE328GALE399STRONG GALE4710STORM5511VIOLENT STORM6412HURRICANE FORCE73TITLEPhillips AAF/Aberdn, the windSTATION REPORT · ASOS APGTYPEPLAN north upSCALENOT TO SCALEREVAS REPORTED SHEET 3 of 6DATE2026-10-16IDSR-APG-3DRAWN AS linework on paperSOURCES FB-EVT-150, FB-ENG-008, FB-INS-002

The full report of Phillips AAF/Aberdn, 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 Perryman

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

Near Perryman

River and lake gauges