Storm Station
San Dimas, California
90°
Partly cloudy· Feels like 89°·Light breeze 7 mph WSW
Mostly cloudy, with a low around 65. Southeast wind around 5 mph.
-UV
75Air quality
33%Humidity
64%Cloud

What is measuring near here

The 4 instruments nearest San Dimas, 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 now2 instruments

La Verne/BrackettPOC

At an airfield/2.1 mi away/1,010 ft/99 ft above here

temp, wind, gust, visibility, precip, pressure

Rank3,086of 3,115

Tanbark RAWSTANC1

A remote fire weather station/5.1 mi away/1,962 ft/1,051 ft above here

temp, wind, gust, humidity, pressure

Rank226of 3,115

measured daily2 instruments

San Dimas 2.1 WSWCA-LA-129

In a volunteer observer's own ground/1.6 mi away/726 ft/185 ft below here

precip, snowfall, snow depth

Rank-

Covina YardCTFC1

At a cooperative observer's station/3.9 mi away/594 ft/317 ft below here

snowfall, snow depth, precip, high, low

Rank-

Station report

The weather at Tanbark RAWS, drawn

The nearest instrument reporting now, 5.1 mi from San Dimas. From its report of Sep 27, 2026, 12:01 AM local time: 3 of its 5 sheets.

The air

72.0 F with a dew point of 44.3 F, 37 per cent relative humidity. Air lifted from the station would cool to its dew point, where cloud forms, about 6,300 ft up.

Chart of the air at Tanbark RAWS: temperature 72.0 degrees Fahrenheit and dew point 44.3, 37 per cent relative humidity; air lifted from the station cools along the dry rate and meets its dew point about 6,300 feet above the station; height to scale.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT TANC1FIG. B THE AIR AT TANBARK 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 STATION01,0002,0003,0004,0005,0006,0007,0008,00030 F40 F50 F60 F70 F80 FSATURATES 6,300 FT ABOVE THE STATION, AT 38.3 FTEMPERATURE 72.0 FDEW POINT 44.3 FSPREAD 27.7 FRELATIVE HUMIDITY 37 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 POINTTITLETanbark RAWS, the airSTATION REPORT · DCP TANC1TYPECHARTSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 1 of 5DATE2026-09-27IDSR-TANC1-1DRAWN AS linework on paperSOURCES FB-WAT-002, FB-ENG-011, FB-ENG-005

The wind

From the east northeast (62 degrees) at 1 mph, gusting 5 mph: force 1, a light air on the Beaufort scale. The strongest gust today was 5 mph.

Plan of the wind at Tanbark RAWS, north up: blowing from 62 degrees, the east northeast, at 1 miles an hour, gusting 5; beside it the Beaufort scale from calm to hurricane force, force 1, light air, marked.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT TANC1FIG. C THE WIND AT TANBARK RAWSPLAN, NORTH UP: THE WIND AS REPORTED, AND WHERE IT SITS ON THE BEAUFORT SCALENESWTHE STATIONFROM 62°BEAUFORT FORCELEAST WIND, MPH0CALM01LIGHT AIR1NOW, 1 MPH2LIGHT BREEZE4GUST, 5 MPH3GENTLE BREEZE84MODERATE BREEZE135FRESH BREEZE196STRONG BREEZE257NEAR GALE328GALE399STRONG GALE4710STORM5511VIOLENT STORM6412HURRICANE FORCE73TITLETanbark RAWS, the windSTATION REPORT · DCP TANC1TYPEPLAN north upSCALENOT TO SCALEREVAS REPORTED SHEET 2 of 5DATE2026-09-27IDSR-TANC1-2DRAWN AS linework on paperSOURCES FB-EVT-150, FB-ENG-008

The column

At 1,962 ft above sea level, 7 per cent of the atmosphere's air lies below the station. The standard atmosphere puts the pressure there at 27.86 inHg and the temperature at 52.0 F; it reports 72.0 F, 20.0 F warmer than standard.

Section from sea level of where Tanbark RAWS stands in the atmosphere, height to scale: the station 1,962 feet above sea level with 7 per cent of the air below it; the standard atmosphere's pressure there, 27.86 inches of mercury, and temperature, 52.0 degrees Fahrenheit.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT TANC1FIG. D WHERE TANBARK 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 ATMOSPHERETANBARK RAWS7 PER CENT OF THE AIR BELOW IT1,962 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 HERE27.86 inHgSTANDARD TEMPERATURE HERE52.0 FTEMPERATURE, REPORTED72.0 FTITLETanbark RAWS, the columnSTATION REPORT · DCP TANC1TYPESECTIONSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 3 of 5DATE2026-09-27IDSR-TANC1-3DRAWN AS linework on paperSOURCES FB-ENG-001, FB-ENG-003

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

-in

Snow on the ground

Elsewhere in California

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

Near San Dimas

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