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Mattawa, Washington

City in Grant County, Washington

Air quality

The air at Mattawa

Index 52, moderate, led by fine particles. Read at 2 AM from its reporting area, Sunnyside (WA), 29 miles off.

52Moderate
  • Fine particles (PM2.5)52Moderate-

The days ahead

Moderate each day through Today, led by fine particles. Yesterday measured 53, moderate.

Smoke, the next 46 hours

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

FriSat

Precipitation

What has fallen at Mattawa

None in the last 3 days, to Fri 1 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 Mattawa, the next 46 hours

Visibility stays 10 miles or more through Sat 11 PM.

FriSat

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

What is measuring near here

The 6 instruments nearest Mattawa, how far away each one is, how high it stands, and what kind of measurement it makes. The nearest is 6.5 miles away.

measured now4 instruments

Vagabond1YT

At an airfield/26.5 mi away/1,560 ft/793 ft above here

temp, wind, gust, visibility, precip, pressure

Rank259of 1,451

measured daily2 instruments

Granger 2.3 NNEWA-YK-7

In a volunteer observer's own ground/28.1 mi away/806 ft/39 ft above here

precip, snowfall, snow depth

Rank-

Station report

The weather at Vagabond, drawn

The nearest airport reporting now, 26.5 mi from Mattawa, Washington. From its report of Oct 16, 2026, 1:55 AM 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 Vagabond, 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 1YTFIG. A THE SKY OVER VAGABONDSECTION, 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 MORE0510TITLEVagabond, the skySTATION REPORT · ASOS 1YTTYPESECTIONSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 1 of 6DATE2026-10-16IDSR-1YT-1DRAWN AS linework on paperSOURCES FB-SKY-001

The air

46.0 F with a dew point of 35.8 F, 67 per cent relative humidity. Air lifted from the station would cool to its dew point, where cloud forms, about 2,300 ft up.

Chart of the air at Vagabond: temperature 46.0 degrees Fahrenheit and dew point 35.8, 67 per cent relative humidity; air lifted from the station cools along the dry rate and meets its dew point about 2,300 feet above the station; height to scale.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT 1YTFIG. B THE AIR AT VAGABONDTHE REPORTED TEMPERATURE AND DEW POINT, AND AIR LIFTED FROM THE STATION WITHOUT MIXING UNTIL IT SATURATES; HEIGHT ABOVE THE STATION TO SCALEFT ABOVE THE STATION01,0002,0003,00020 F30 F40 F50 F60 FSATURATES 2,300 FT ABOVE THE STATION, AT 33.6 FTEMPERATURE 46.0 FDEW POINT 35.8 FSPREAD 10.2 FRELATIVE HUMIDITY 67 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 POINTTITLEVagabond, the airSTATION REPORT · ASOS 1YTTYPECHARTSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 2 of 6DATE2026-10-16IDSR-1YT-2DRAWN AS linework on paperSOURCES FB-WAT-002, FB-ENG-011, FB-ENG-005

The wind

From the southwest (230 degrees) at 5 mph: force 2, a light breeze on the Beaufort scale.

Plan of the wind at Vagabond, north up: blowing from 230 degrees, the southwest, at 5 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 1YTFIG. C THE WIND AT VAGABONDPLAN, NORTH UP: THE WIND AS REPORTED, AND WHERE IT SITS ON THE BEAUFORT SCALENESWTHE STATIONFROM 230°BEAUFORT FORCELEAST WIND, MPH0CALM01LIGHT AIR12LIGHT BREEZE4NOW, 5 MPH3GENTLE BREEZE84MODERATE BREEZE135FRESH BREEZE196STRONG BREEZE257NEAR GALE328GALE399STRONG GALE4710STORM5511VIOLENT STORM6412HURRICANE FORCE73TITLEVagabond, the windSTATION REPORT · ASOS 1YTTYPEPLAN north upSCALENOT TO SCALEREVAS REPORTED SHEET 3 of 6DATE2026-10-16IDSR-1YT-3DRAWN AS linework on paperSOURCES FB-EVT-150, FB-ENG-008, FB-INS-002

The full report of Vagabond, in 6 sheets, each beside the Field Book plates that explain it

0in

Snow on the ground

Measured at Priest Rapids Dam (PRWW1), 6.5 miles from here, read 15 Oct, 20:00. measured daily

Elsewhere in Washington

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

Near Mattawa

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

Near Mattawa

River and lake gauges