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Grass Valley, Oregon

City in Sherman County, Oregon

Air quality

The air at Grass Valley

Index 27, good, led by fine particles. Read at 9 PM from its reporting area, The Dalles (OR), 26 miles off.

27Good
  • Fine particles (PM2.5)27Good-

The days ahead

Yesterday measured 22, good.

Smoke, the next 44 hours

Little smoke near the ground through Sat 5 PM: the index from smoke stays at 39 or under.

FriSat

Precipitation

What has fallen at Grass Valley

None in the last 3 days, to Thu 9 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 Grass Valley, the next 44 hours

Visibility stays 10 miles or more through Sat 5 PM.

FriSat

On the radar over Grass Valley, OregonReflectivityStorm topsRain rateRain, last 24 hoursForecast temperatureForecast rain totalEvery picture

What is measuring near here

The 5 instruments nearest Grass Valley, how far away each one is, how high it stands, and what kind of measurement it makes. The nearest is 7.3 miles away.

measured now3 instruments

Patjens RAWSPAFO3

A remote fire weather station/7.3 mi away/2,178 ft/80 ft below here

temp, wind, gust, humidity, pressure

Rank269of 1,635

measured daily2 instruments

MoroMORO3

At a cooperative observer's station/8.8 mi away/1,844 ft/414 ft below here

snowfall, snow depth, precip, high, low

Rank-

Dufur 7.3 WSWOR-WC-2

In a volunteer observer's own ground/24.2 mi away/2,073 ft/185 ft below here

precip, snowfall, snow depth

Rank-

Station report

The weather at Patjens RAWS, drawn

The nearest instrument reporting now, 7.3 mi from Grass Valley, Oregon. From its report of Oct 15, 2026, 8:48 PM local time: 3 of its 5 sheets.

The air

55.0 F with a dew point of 35.7 F, 48 per cent relative humidity. Air lifted from the station would cool to its dew point, where cloud forms, about 4,400 ft up.

Chart of the air at Patjens RAWS: temperature 55.0 degrees Fahrenheit and dew point 35.7, 48 per cent relative humidity; air lifted from the station cools along the dry rate and meets its dew point about 4,400 feet above the station; height to scale.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT PAFO3FIG. B THE AIR AT PATJENS RAWSTHE REPORTED TEMPERATURE AND DEW POINT, AND AIR LIFTED FROM THE STATION WITHOUT MIXING UNTIL IT SATURATES; HEIGHT ABOVE THE STATION TO SCALEFT ABOVE THE STATION01,0002,0003,0004,0005,0006,00020 F30 F40 F50 F60 F70 FSATURATES 4,400 FT ABOVE THE STATION, AT 31.5 FTEMPERATURE 55.0 FDEW POINT 35.7 FSPREAD 19.3 FRELATIVE HUMIDITY 48 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 POINTTITLEPatjens RAWS, the airSTATION REPORT · DCP PAFO3TYPECHARTSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 1 of 5DATE2026-10-16IDSR-PAFO3-1DRAWN AS linework on paperSOURCES FB-WAT-002, FB-ENG-011, FB-ENG-005

The wind

From the northeast (53 degrees) at 7 mph, gusting 12 mph: force 2, a light breeze on the Beaufort scale. The strongest gust today was 18 mph.

Plan of the wind at Patjens RAWS, north up: blowing from 53 degrees, the northeast, at 7 miles an hour, gusting 12; beside it the Beaufort scale from calm to hurricane force, force 2, light breeze, marked.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT PAFO3FIG. C THE WIND AT PATJENS RAWSPLAN, NORTH UP: THE WIND AS REPORTED, AND WHERE IT SITS ON THE BEAUFORT SCALENESWTHE STATIONFROM 53°BEAUFORT FORCELEAST WIND, MPH0CALM01LIGHT AIR12LIGHT BREEZE4NOW, 7 MPH3GENTLE BREEZE8GUST, 12 MPH4MODERATE BREEZE135FRESH BREEZE196STRONG BREEZE257NEAR GALE328GALE399STRONG GALE4710STORM5511VIOLENT STORM6412HURRICANE FORCE73TITLEPatjens RAWS, the windSTATION REPORT · DCP PAFO3TYPEPLAN north upSCALENOT TO SCALEREVAS REPORTED SHEET 2 of 5DATE2026-10-16IDSR-PAFO3-2DRAWN AS linework on paperSOURCES FB-EVT-150, FB-ENG-008

The column

At 2,178 ft above sea level, 8 per cent of the atmosphere's air lies below the station. The standard atmosphere puts the pressure there at 27.64 inHg and the temperature at 51.2 F; it reports 55.0 F, 3.8 F warmer than standard.

Section from sea level of where Patjens RAWS stands in the atmosphere, height to scale: the station 2,178 feet above sea level with 8 per cent of the air below it; the standard atmosphere's pressure there, 27.64 inches of mercury, and temperature, 51.2 degrees Fahrenheit.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT PAFO3FIG. D WHERE PATJENS RAWS STANDS IN THE ATMOSPHERESECTION FROM SEA LEVEL, HEIGHT TO SCALE, THE STATION IN THE STANDARD ATMOSPHEREFT ABOVE SEA LEVEL05,00010,00015,000SEA LEVEL, 29.92 inHg IN THE STANDARD ATMOSPHEREPATJENS RAWS8 PER CENT OF THE AIR BELOW IT2,178 FT10 PER CENT OF THE AIR BELOW, 2,890 FT20 PER CENT OF THE AIR BELOW, 6,050 FT30 PER CENT OF THE AIR BELOW, 9,540 FT40 PER CENT OF THE AIR BELOW, 13,470 FTSTANDARD PRESSURE HERE27.64 inHgSTANDARD TEMPERATURE HERE51.2 FTEMPERATURE, REPORTED55.0 FTITLEPatjens RAWS, the columnSTATION REPORT · DCP PAFO3TYPESECTIONSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 3 of 5DATE2026-10-16IDSR-PAFO3-3DRAWN AS linework on paperSOURCES FB-ENG-001, FB-ENG-003

The full report of Patjens RAWS, in 5 sheets, each beside the Field Book plates that explain it

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Snow on the ground

Elsewhere in Oregon

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

Near Grass Valley

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

Near Grass Valley

River and lake gauges