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West Pasco, Washington

Community in Franklin County, Washington

Air quality

The air at West Pasco

Index 38, good, led by fine particles. Read at 12 AM from its reporting area, Kennewick (WA), 3 miles off.

38Good
  • Fine particles (PM2.5)38Good-
  • Coarse particles (PM10)26Good-

The days ahead

Good each day through Today, led by fine particles. Yesterday measured 36, good.

Smoke, the next 41 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 West Pasco

None in the last 3 days, to Fri 12 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 West Pasco, the next 41 hours

Visibility stays 10 miles or more through Sat 5 PM.

FriSat

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

What is measuring near here

The 6 instruments nearest West Pasco, how far away each one is, how high it stands, and what kind of measurement it makes. The nearest is 1.6 miles away.

measured now4 instruments

measured daily2 instruments

Pasco 2.2 NWWA-FK-2

In a volunteer observer's own ground/1.6 mi away/528 ft/125 ft above here

precip, snowfall, snow depth

Rank-

KennewickKENW1

At a cooperative observer's station/4.0 mi away/341 ft/62 ft below here

snowfall, snow depth, precip, high, low

Rank776of 1,451

Station report

The weather at Pasco/Tri-Cities, drawn

The nearest airport reporting now, 2.2 mi from West Pasco, Washington. From its report of Oct 15, 2026, 11:53 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 Pasco/Tri-Cities, 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 PSCFIG. A THE SKY OVER PASCO/TRI-CITIESSECTION, 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 MORE0510TITLEPasco/Tri-Cities, the skySTATION REPORT · ASOS PSCTYPESECTIONSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 1 of 6DATE2026-10-16IDSR-PSC-1DRAWN AS linework on paperSOURCES FB-SKY-001

The air

45.0 F with a dew point of 39.0 F, 79 per cent relative humidity. Air lifted from the station would cool to its dew point, where cloud forms, about 1,400 ft up.

Chart of the air at Pasco/Tri-Cities: temperature 45.0 degrees Fahrenheit and dew point 39.0, 79 per cent relative humidity; air lifted from the station cools along the dry rate and meets its dew point about 1,400 feet above the station; height to scale.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT PSCFIG. B THE AIR AT PASCO/TRI-CITIESTHE REPORTED TEMPERATURE AND DEW POINT, AND AIR LIFTED FROM THE STATION WITHOUT MIXING UNTIL IT SATURATES; HEIGHT ABOVE THE STATION TO SCALEFT ABOVE THE STATION01,0002,0003,00030 F40 F50 F60 FSATURATES 1,400 FT ABOVE THE STATION, AT 37.7 FTEMPERATURE 45.0 FDEW POINT 39.0 FSPREAD 6.0 FRELATIVE HUMIDITY 79 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 POINTTITLEPasco/Tri-Cities, the airSTATION REPORT · ASOS PSCTYPECHARTSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 2 of 6DATE2026-10-16IDSR-PSC-2DRAWN AS linework on paperSOURCES FB-WAT-002, FB-ENG-011, FB-ENG-005

The wind

Calm.

Plan of the wind at Pasco/Tri-Cities, 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 PSCFIG. C THE WIND AT PASCO/TRI-CITIESPLAN, 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 FORCE73TITLEPasco/Tri-Cities, the windSTATION REPORT · ASOS PSCTYPEPLAN north upSCALENOT TO SCALEREVAS REPORTED SHEET 3 of 6DATE2026-10-16IDSR-PSC-3DRAWN AS linework on paperSOURCES FB-EVT-150, FB-ENG-008, FB-INS-002

The full report of Pasco/Tri-Cities, 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 West Pasco

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

Near West Pasco

River and lake gauges