Storm Station
Sign in

Roche Harbor, Washington

Community in San Juan County, Washington

Air quality

The air at Roche Harbor

Index 48, good, led by fine particles. Read at 3 PM from its reporting area, Anacortes (WA), 24 miles off.

48Good
  • Fine particles (PM2.5)48Good-
  • Ozone6Good-

The days ahead

Highest moderate, today, led by fine particles. Yesterday measured 19, good.

Smoke, the next 45 hours

Little smoke near the ground through Sun 11 AM: the index from smoke stays at 6 or under.

FriSatSun

Precipitation

What has fallen at Roche Harbor

None in the last 3 days, to Fri 2 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 Roche Harbor, the next 45 hours

Visibility stays 8 miles or more through Sun 11 AM, lowest 9 miles Sat 3 AM.

FriSatSun

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

What is measuring near here

The 6 instruments nearest Roche Harbor, how far away each one is, how high it stands, and what kind of measurement it makes. The nearest is 0.4 miles away.

measured now4 instruments

measured daily2 instruments

Friday Harbor 6.8 NWWA-SJ-26

In a volunteer observer's own ground/0.4 mi away/184 ft/8 ft above here

precip, snowfall, snow depth

Rank-

Padilla Bay FarmPBFW1

On a farm or research station/31.9 mi away/3 ft/173 ft below here

snowfall, snow depth, precip, high, low

Rank-

Station report

The weather at Friday Harbor, drawn

The nearest airport reporting now, 7.6 mi from Roche Harbor, Washington. From its report of Oct 16, 2026, 2:53 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 Friday Harbor, 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 FHRFIG. A THE SKY OVER FRIDAY HARBORSECTION, 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 MORE0510TITLEFriday Harbor, the skySTATION REPORT · ASOS FHRTYPESECTIONSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 1 of 6DATE2026-10-16IDSR-FHR-1DRAWN AS linework on paperSOURCES FB-SKY-001

The air

62.0 F with a dew point of 48.0 F, 60 per cent relative humidity. Air lifted from the station would cool to its dew point, where cloud forms, about 3,200 ft up.

Chart of the air at Friday Harbor: temperature 62.0 degrees Fahrenheit and dew point 48.0, 60 per cent relative humidity; air lifted from the station cools along the dry rate and meets its dew point about 3,200 feet above the station; height to scale.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT FHRFIG. B THE AIR AT FRIDAY HARBORTHE REPORTED TEMPERATURE AND DEW POINT, AND AIR LIFTED FROM THE STATION WITHOUT MIXING UNTIL IT SATURATES; HEIGHT ABOVE THE STATION TO SCALEFT ABOVE THE STATION01,0002,0003,0004,0005,00030 F40 F50 F60 F70 FSATURATES 3,200 FT ABOVE THE STATION, AT 44.9 FTEMPERATURE 62.0 FDEW POINT 48.0 FSPREAD 14.0 FRELATIVE HUMIDITY 60 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 POINTTITLEFriday Harbor, the airSTATION REPORT · ASOS FHRTYPECHARTSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 2 of 6DATE2026-10-16IDSR-FHR-2DRAWN AS linework on paperSOURCES FB-WAT-002, FB-ENG-011, FB-ENG-005

The wind

From the southeast (140 degrees) at 3 mph: force 1, a light air on the Beaufort scale.

Plan of the wind at Friday Harbor, north up: blowing from 140 degrees, the southeast, at 3 miles an hour; beside it the Beaufort scale from calm to hurricane force, force 1, light air, marked.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT FHRFIG. C THE WIND AT FRIDAY HARBORPLAN, NORTH UP: THE WIND AS REPORTED, AND WHERE IT SITS ON THE BEAUFORT SCALENESWTHE STATIONFROM 140°BEAUFORT FORCELEAST WIND, MPH0CALM01LIGHT AIR1NOW, 3 MPH2LIGHT BREEZE43GENTLE BREEZE84MODERATE BREEZE135FRESH BREEZE196STRONG BREEZE257NEAR GALE328GALE399STRONG GALE4710STORM5511VIOLENT STORM6412HURRICANE FORCE73TITLEFriday Harbor, the windSTATION REPORT · ASOS FHRTYPEPLAN north upSCALENOT TO SCALEREVAS REPORTED SHEET 3 of 6DATE2026-10-16IDSR-FHR-3DRAWN AS linework on paperSOURCES FB-EVT-150, FB-ENG-008, FB-INS-002

The full report of Friday Harbor, 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 Roche Harbor

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

Near Roche Harbor

River and lake gauges