Storm Station
Sign in

Vashon, Washington

Community in King County, Washington

Air quality

The air at Vashon

Index 61, moderate, led by fine particles. Read at 11 PM from its reporting area, Seattle-Bellevue-Kent Valley (WA), 11 miles off.

61Moderate
  • Fine particles (PM2.5)61Moderate9.8 mi
  • Ozone1Good2 ppb12.2 mi
  • Coarse particles (PM10)23Good10.9 mi
  • Nitrogen dioxide14Good15.8 ppb10.9 mi
  • Sulfur dioxide0Good0.7 ppb12.2 mi
  • Carbon monoxide-0.3 ppm12.2 mi

The days ahead

Good each day through Sat Oct 17, led by fine particles. Yesterday measured 32, good.

Smoke, the next 42 hours

Little smoke near the ground through Sat 5 PM: the index from smoke stays at 11 or under.

FriSat

Precipitation

What has fallen at Vashon

None in the last 3 days, to Thu 11 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 Vashon, the next 42 hours

Visibility stays 7 miles or more through Sat 5 PM, lowest 8 miles Sat 2 AM.

FriSat

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

What is measuring near here

The 6 instruments nearest Vashon, how far away each one is, how high it stands, and what kind of measurement it makes. The nearest is 2.6 miles away.

measured now4 instruments

TacomaNDBC-TCMW1

At a river or reservoir gauge/10.6 mi away/-/- ft from here

temp, wind, gust, humidity, pressure

Rank1,390of 1,451

measured daily2 instruments

Tacoma No. 1TACW1

At a cooperative observer's station/12.6 mi away/6 ft/316 ft below here

snowfall, snow depth, precip, high, low

Rank-

Station report

The weather at Seattle-Tacoma INTL, drawn

The nearest airport reporting now, 7.2 mi from Vashon, Washington. From its report of Oct 15, 2026, 11:53 PM local time: 3 of its 6 sheets.

The sky

Scattered at 25,000 ft; visibility 10 mi or more.

Section of the sky over Seattle-Tacoma INTL, height above the station to scale: scattered cloud with its base 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 FTSCT 25,000 FTSCATTERED, 3 TO 4 EIGHTHS OF THE SKYVISIBILITY, 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

53.0 F with a dew point of 49.0 F, 86 per cent relative humidity. Air lifted from the station would cool to its dew point, where cloud forms, about 900 ft up; the lowest cloud reported is at 25,000 ft.

Chart of the air at Seattle-Tacoma INTL: temperature 53.0 degrees Fahrenheit and dew point 49.0, 86 per cent relative humidity; air lifted from the station cools along the dry rate and meets its dew point about 900 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 STATION01,0002,0003,0004,0005,00040 F50 F60 FSATURATES 900 FT ABOVE THE STATION, AT 48.1 FABOVE THIS SHEET: LOWEST CLOUD REPORTED, SCT 25,000 FTTEMPERATURE 53.0 FDEW POINT 49.0 FSPREAD 4.0 FRELATIVE HUMIDITY 86 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

From the north (360 degrees) at 7 mph: force 2, a light breeze on the Beaufort scale.

Plan of the wind at Seattle-Tacoma INTL, north up: blowing from 360 degrees, the north, 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 SEAFIG. C THE WIND AT SEATTLE-TACOMA INTLPLAN, NORTH UP: THE WIND AS REPORTED, AND WHERE IT SITS ON THE BEAUFORT SCALENESWTHE STATIONFROM 360°BEAUFORT FORCELEAST WIND, MPH0CALM01LIGHT AIR12LIGHT BREEZE4NOW, 7 MPH3GENTLE 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 Vashon

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

Near Vashon

River and lake gauges