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Walker Mill, Maryland

Community in Prince George's County, Maryland

Air quality

The air at Walker Mill

Index 53, moderate, led by fine particles. Read at 2 PM from its reporting area, Northern Virginia and DC (DC), 7 miles off.

53Moderate
  • Fine particles (PM2.5)53Moderate3.8 mi
  • Ozone21Good30 ppb4.1 mi
  • Nitrogen dioxide8Good8 ppb3.8 mi
  • Sulfur dioxide0Good0.1 ppb12.8 mi
  • Carbon monoxide-0.2 ppm3.8 mi

The days ahead

Good each day through Sun Oct 18, led by fine particles. Yesterday measured 23, 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 Walker Mill

0.06 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
0.06in
Last 3 days
0.06in

Visibility

How far you can see at Walker Mill, the next 43 hours

Visibility stays 3 miles or more through Sun 8 AM, lowest 3 miles Sat 5 AM.

FriSatSun

What is measuring near here

The 7 instruments nearest Walker Mill, how far away each one is, how high it stands, and what kind of measurement it makes. The nearest is 2.1 miles away.

measured now5 instruments

Andrews AFBADW

At an airfield/4.5 mi away/282 ft/60 ft above here

temp, wind, gust, visibility, precip, pressure

Rank4of 736

Powder MillS2049

At a soil climate station/10.2 mi away/105 ft/117 ft below here

temp, humidity, soil temp, soil moisture

Rank734of 736

measured daily2 instruments

Forestville 0.5 EMD-PG-65

In a volunteer observer's own ground/2.1 mi away/268 ft/46 ft above here

precip, snowfall, snow depth

Rank-

BeltsvilleBTVM2

At a cooperative observer's station/11.1 mi away/138 ft/84 ft below here

snowfall, snow depth, precip, high, low

Rank-

Station report

The weather at Andrews AFB, drawn

The nearest airport reporting now, 4.5 mi from Walker Mill, Maryland. From its report of Oct 16, 2026, 1:55 PM local time: 3 of its 6 sheets.

The sky

Scattered at 1,300 ft; visibility 10 mi or more.

Section of the sky over Andrews AFB, height above the station to scale: scattered cloud with its base at 1,300 feet, and visibility of 10 mi or more.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT ADWFIG. A THE SKY OVER ANDREWS AFBSECTION, 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 STATIONSCT 1,300 FTSCATTERED, 3 TO 4 EIGHTHS OF THE SKYVISIBILITY, MILES: 10 MI OR MORE0510TITLEAndrews AFB, the skySTATION REPORT · ASOS ADWTYPESECTIONSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 1 of 6DATE2026-10-16IDSR-ADW-1DRAWN AS linework on paperSOURCES FB-SKY-001, FB-SKY-017, FB-SKY-016, FB-SKY-018

The air

76.5 F with a dew point of 68.4 F, 76 per cent relative humidity. Air lifted from the station would cool to its dew point, where cloud forms, about 1,900 ft up; the lowest cloud reported is at 1,300 ft.

Chart of the air at Andrews AFB: temperature 76.5 degrees Fahrenheit and dew point 68.4, 76 per cent relative humidity; air lifted from the station cools along the dry rate and meets its dew point about 1,900 feet above the station, against the lowest cloud reported at 1,300 feet; height to scale.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT ADWFIG. B THE AIR AT ANDREWS AFBTHE 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 1,900 FT ABOVE THE STATION, AT 66.4 FLOWEST CLOUD REPORTED, SCT 1,300 FTTEMPERATURE 76.5 FDEW POINT 68.4 FSPREAD 8.1 FRELATIVE HUMIDITY 76 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 POINTTITLEAndrews AFB, the airSTATION REPORT · ASOS ADWTYPECHARTSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 2 of 6DATE2026-10-16IDSR-ADW-2DRAWN AS linework on paperSOURCES FB-WAT-002, FB-ENG-011, FB-ENG-005

The wind

From the south southwest (200 degrees) at 13 mph, gusting 18 mph: force 4, a moderate breeze on the Beaufort scale. The strongest gust today was 20 mph.

Plan of the wind at Andrews AFB, north up: blowing from 200 degrees, the south southwest, at 13 miles an hour, gusting 18; beside it the Beaufort scale from calm to hurricane force, force 4, moderate breeze, marked.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT ADWFIG. C THE WIND AT ANDREWS AFBPLAN, NORTH UP: THE WIND AS REPORTED, AND WHERE IT SITS ON THE BEAUFORT SCALENESWTHE STATIONFROM 200°BEAUFORT FORCELEAST WIND, MPH0CALM01LIGHT AIR12LIGHT BREEZE43GENTLE BREEZE84MODERATE BREEZE13NOW, 13 MPH5FRESH BREEZE196STRONG BREEZE257NEAR GALE328GALE399STRONG GALE4710STORM5511VIOLENT STORM6412HURRICANE FORCE73TITLEAndrews AFB, the windSTATION REPORT · ASOS ADWTYPEPLAN north upSCALENOT TO SCALEREVAS REPORTED SHEET 3 of 6DATE2026-10-16IDSR-ADW-3DRAWN AS linework on paperSOURCES FB-EVT-150, FB-ENG-008, FB-INS-002

The full report of Andrews AFB, in 6 sheets, each beside the Field Book plates that explain it

-

Snow on the ground

Elsewhere in Maryland

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

Near Walker Mill

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

Near Walker Mill