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Fort Lewis, Washington

Community in Pierce County, Washington

Air quality

The air at Fort Lewis

Index 56, moderate, led by fine particles. Read at 9 PM from its reporting area, Tacoma-Puyallup (WA), 9 miles off.

56Moderate
  • Fine particles (PM2.5)56Moderate8.8 mi
  • Ozone-1 ppb11.9 mi
  • Nitrogen dioxide19Good20.4 ppb10.6 mi

The days ahead

Good each day through Sat Oct 17, led by fine particles. Yesterday measured 28, good.

Smoke, the next 44 hours

Little smoke near the ground through Sat 5 PM: the index from smoke stays at 28 or under.

FriSat

Precipitation

What has fallen at Fort Lewis

None in the last 3 days, to Thu 9 PM. Measured by radar and rain gauges, as water.

Last 24 hours
0.00in
Last 3 days
0.00in

Visibility

How far you can see at Fort Lewis, the next 44 hours

Visibility stays 7 miles or more through Sat 5 PM, lowest 8 miles Sat 5 AM.

FriSat

On the radar over Fort Lewis, WashingtonReflectivityStorm topsRain rateRain, last 24 hoursForecast temperatureForecast rain totalEvery picture

What is measuring near here

The 6 instruments nearest Fort Lewis, how far away each one is, how high it stands, and what kind of measurement it makes. The nearest is 1.3 miles away.

measured now4 instruments

TacomaNDBC-TCMW1

At a river or reservoir gauge/15.0 mi away/-/- ft from here

temp, wind, gust, humidity, pressure

Rank1,390of 1,451

measured daily2 instruments

DuPont 1.0 SEWA-PR-72

In a volunteer observer's own ground/2.0 mi away/242 ft/135 ft below here

precip, snowfall, snow depth

Rank-

Tacoma No. 1TACW1

At a cooperative observer's station/13.5 mi away/6 ft/371 ft below here

snowfall, snow depth, precip, high, low

Rank-

Station report

The weather at Fort Lewis/Gray AAF, drawn

The nearest airport reporting now, 1.3 mi from Fort Lewis, Washington. From its report of Oct 15, 2026, 8:55 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 Fort Lewis/Gray AAF, 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 GRFFIG. A THE SKY OVER FORT LEWIS/GRAY AAFSECTION, 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 MORE0510TITLEFort Lewis/Gray AAF, the skySTATION REPORT · ASOS GRFTYPESECTIONSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 1 of 6DATE2026-10-16IDSR-GRF-1DRAWN AS linework on paperSOURCES FB-SKY-001

The air

53.4 F with a dew point of 50.0 F, 88 per cent relative humidity. Air lifted from the station would cool to its dew point, where cloud forms, about 800 ft up.

Chart of the air at Fort Lewis/Gray AAF: temperature 53.4 degrees Fahrenheit and dew point 50.0, 88 per cent relative humidity; air lifted from the station cools along the dry rate and meets its dew point about 800 feet above the station; height to scale.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT GRFFIG. B THE AIR AT FORT LEWIS/GRAY AAFTHE 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 FSATURATES 800 FT ABOVE THE STATION, AT 49.2 FTEMPERATURE 53.4 FDEW POINT 50.0 FSPREAD 3.4 FRELATIVE HUMIDITY 88 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 POINTTITLEFort Lewis/Gray AAF, the airSTATION REPORT · ASOS GRFTYPECHARTSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 2 of 6DATE2026-10-16IDSR-GRF-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 Fort Lewis/Gray AAF, 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 GRFFIG. C THE WIND AT FORT LEWIS/GRAY AAFPLAN, 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 FORCE73TITLEFort Lewis/Gray AAF, the windSTATION REPORT · ASOS GRFTYPEPLAN north upSCALENOT TO SCALEREVAS REPORTED SHEET 3 of 6DATE2026-10-16IDSR-GRF-3DRAWN AS linework on paperSOURCES FB-EVT-150, FB-ENG-008, FB-INS-002

The full report of Fort Lewis/Gray AAF, in 6 sheets, each beside the Field Book plates that explain it

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Snow on the ground

Elsewhere in Washington

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

Near Fort Lewis

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

Near Fort Lewis

River and lake gauges