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Federal Way, Washington

City in King County, Washington

Air quality

The air at Federal Way

Index 63, moderate, led by fine particles. Read at 4 AM from its reporting area, Tacoma-Puyallup (WA), 10 miles off.

63Moderate
  • Fine particles (PM2.5)63Moderate8.2 mi
  • Coarse particles (PM10)-17.3 mi
  • Nitrogen dioxide10Good11.8 ppb8.2 mi
  • Sulfur dioxide0Good0.9 ppb17.9 mi
  • Carbon monoxide-0.2 ppm17.9 mi

The days ahead

Good each day through Sat Oct 17, led by fine particles. Yesterday measured 48, good.

Smoke, the next 43 hours

Little smoke near the ground through Sat 11 PM: the index from smoke stays at 22 or under.

FriSat

Precipitation

What has fallen at Federal Way

None in the last 3 days, to Fri 4 AM. 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 Federal Way, the next 43 hours

Mist or haze: visibility falls to 2 miles Sat 4 AM.

FriSat

On the radar over Federal Way, WashingtonReflectivityStorm topsRain rateRain, last 24 hoursForecast temperatureForecast rain totalEvery picture

What is measuring near here

The 6 instruments nearest Federal Way, how far away each one is, how high it stands, and what kind of measurement it makes. The nearest is 0.5 miles away.

measured now4 instruments

TacomaNDBC-TCMW1

At a river or reservoir gauge/4.5 mi away/-/- ft from here

temp, wind, gust, humidity, pressure

Rank1,390of 1,451

measured daily2 instruments

Federal Way 0.7 NNEWA-KG-334

In a volunteer observer's own ground/0.5 mi away/338 ft/14 ft below here

precip, snowfall, snow depth

Rank-

Tacoma No. 1TACW1

At a cooperative observer's station/5.7 mi away/6 ft/346 ft below here

snowfall, snow depth, precip, high, low

Rank-

Station report

The weather at Seattle-Tacoma INTL, drawn

The nearest airport reporting now, 9.1 mi from Federal Way, Washington. From its report of Oct 16, 2026, 3:53 AM local time: 3 of its 6 sheets.

The sky

Broken at 25,000 ft; the ceiling is 25,000 ft; visibility 10 mi or more.

Section of the sky over Seattle-Tacoma INTL, height above the station to scale: broken cloud with its base at 25,000 feet, the ceiling at 25,000 feet, and visibility of 10 mi or more.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT SEAFIG. A THE SKY OVER SEATTLE-TACOMA INTLSECTION, 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 STATION05,00010,00015,00020,00025,00030,00035,00040,000ETAGESLOWMIDDLEHIGHTHE STATIONTHE CEILOMETER READS TO 12,000 FTBKN 25,000 FTBROKEN, 5 TO 7 EIGHTHS OF THE SKYCEILING 25,000 FTVISIBILITY, MILES: 10 MI OR MORE0510TITLESeattle-Tacoma INTL, the skySTATION REPORT · ASOS SEATYPESECTIONSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 1 of 6DATE2026-10-16IDSR-SEA-1DRAWN AS linework on paperSOURCES FB-SKY-001, FB-SKY-010, FB-SKY-011, FB-SKY-012

The air

49.0 F with a dew point of 47.0 F, 93 per cent relative humidity. Air lifted from the station would cool to its dew point, where cloud forms, about 500 ft up; the lowest cloud reported is at 25,000 ft.

Chart of the air at Seattle-Tacoma INTL: temperature 49.0 degrees Fahrenheit and dew point 47.0, 93 per cent relative humidity; air lifted from the station cools along the dry rate and meets its dew point about 500 feet above the station, against the lowest cloud reported at 25,000 feet; height to scale.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT SEAFIG. B THE AIR AT SEATTLE-TACOMA INTLTHE REPORTED TEMPERATURE AND DEW POINT, AND AIR LIFTED FROM THE STATION WITHOUT MIXING UNTIL IT SATURATES; HEIGHT ABOVE THE STATION TO SCALEFT ABOVE THE STATION01,0002,0003,0004,00040 F50 F60 FSATURATES 500 FT ABOVE THE STATION, AT 46.5 FABOVE THIS SHEET: LOWEST CLOUD REPORTED, BKN 25,000 FTTEMPERATURE AND DEW POINT 49.0 F, 47.0 FRELATIVE HUMIDITY 93 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 POINTTITLESeattle-Tacoma INTL, the airSTATION REPORT · ASOS SEATYPECHARTSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 2 of 6DATE2026-10-16IDSR-SEA-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 Seattle-Tacoma INTL, 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 SEAFIG. C THE WIND AT SEATTLE-TACOMA INTLPLAN, 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 FORCE73TITLESeattle-Tacoma INTL, the windSTATION REPORT · ASOS SEATYPEPLAN north upSCALENOT TO SCALEREVAS REPORTED SHEET 3 of 6DATE2026-10-16IDSR-SEA-3DRAWN AS linework on paperSOURCES FB-EVT-150, FB-ENG-008, FB-INS-002

The full report of Seattle-Tacoma INTL, in 6 sheets, each beside the Field Book plates that explain it

-

Snow on the ground

Elsewhere in Washington

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

Near Federal Way

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

Near Federal Way

River and lake gauges