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Laytonsville, Maryland

Town in Montgomery County, Maryland

Air quality

The air at Laytonsville

Index 28, good, led by fine particles. Read at 2 PM from its reporting area, Suburban DC (MD), 15 miles off.

28Good
  • Fine particles (PM2.5)28Good18.1 mi
  • Ozone24Good26 ppb7 mi
  • Nitrogen dioxide3Good3 ppb18.1 mi
  • Sulfur dioxide0Good0.1 ppb18.1 mi
  • Carbon monoxide-0.3 ppm16.9 mi

The days ahead

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

Smoke, the next 43 hours

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

FriSatSun

Precipitation

What has fallen at Laytonsville

0.11 in in the last 24 hours, and none in the 2 days before, to Fri 1 PM. Measured by radar and rain gauges, as water.

Last 24 hours
0.11in
Last 3 days
0.11in

Visibility

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

Visibility stays 7 miles or more through Sun 8 AM, lowest 8 miles Sat 4 AM.

FriSatSun

What is measuring near here

The 7 instruments nearest Laytonsville, how far away each one is, how high it stands, and what kind of measurement it makes. The nearest is 1.9 miles away.

measured now5 instruments

GaithersburgGAI

At an airfield/2.8 mi away/539 ft/48 ft below here

temp, wind, gust, visibility, precip, pressure

Rank76of 736

Powder MillS2049

At a soil climate station/20.6 mi away/105 ft/482 ft below here

temp, humidity, soil temp, soil moisture

Rank734of 736

measured daily2 instruments

Damascus 3 SSWDMAM2

At a cooperative observer's station/6.2 mi away/676 ft/89 ft above here

snowfall, snow depth, precip, high, low

Rank31of 736

Station report

The weather at Gaithersburg, drawn

The nearest airport reporting now, 2.8 mi from Laytonsville, Maryland. From its report of Oct 16, 2026, 1:56 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 Gaithersburg, 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 GAIFIG. A THE SKY OVER GAITHERSBURGSECTION, 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 MORE0510TITLEGaithersburg, the skySTATION REPORT · ASOS GAITYPESECTIONSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 1 of 6DATE2026-10-16IDSR-GAI-1DRAWN AS linework on paperSOURCES FB-SKY-001

The air

79.0 F with a dew point of 69.0 F, 71 per cent relative humidity. Air lifted from the station would cool to its dew point, where cloud forms, about 2,300 ft up.

Chart of the air at Gaithersburg: temperature 79.0 degrees Fahrenheit and dew point 69.0, 71 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; height to scale.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT GAIFIG. B THE AIR AT GAITHERSBURGTHE REPORTED TEMPERATURE AND DEW POINT, AND AIR LIFTED FROM THE STATION WITHOUT MIXING UNTIL IT SATURATES; HEIGHT ABOVE THE STATION TO SCALEFT ABOVE THE STATION01,0002,0003,00060 F70 F80 F90 FSATURATES 2,300 FT ABOVE THE STATION, AT 66.6 FTEMPERATURE 79.0 FDEW POINT 69.0 FSPREAD 10.0 FRELATIVE HUMIDITY 71 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 POINTTITLEGaithersburg, the airSTATION REPORT · ASOS GAITYPECHARTSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 2 of 6DATE2026-10-16IDSR-GAI-2DRAWN AS linework on paperSOURCES FB-WAT-002, FB-ENG-011, FB-ENG-005

The wind

From the southwest (220 degrees) at 6 mph: force 2, a light breeze on the Beaufort scale.

Plan of the wind at Gaithersburg, north up: blowing from 220 degrees, the southwest, at 6 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 GAIFIG. C THE WIND AT GAITHERSBURGPLAN, NORTH UP: THE WIND AS REPORTED, AND WHERE IT SITS ON THE BEAUFORT SCALENESWTHE STATIONFROM 220°BEAUFORT FORCELEAST WIND, MPH0CALM01LIGHT AIR12LIGHT BREEZE4NOW, 6 MPH3GENTLE BREEZE84MODERATE BREEZE135FRESH BREEZE196STRONG BREEZE257NEAR GALE328GALE399STRONG GALE4710STORM5511VIOLENT STORM6412HURRICANE FORCE73TITLEGaithersburg, the windSTATION REPORT · ASOS GAITYPEPLAN north upSCALENOT TO SCALEREVAS REPORTED SHEET 3 of 6DATE2026-10-16IDSR-GAI-3DRAWN AS linework on paperSOURCES FB-EVT-150, FB-ENG-008, FB-INS-002

The full report of Gaithersburg, 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 Laytonsville

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

Near Laytonsville