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Glen Ellen, California

Community in Sonoma County, California

Air quality

The air at Glen Ellen

Index 45, good, led by fine particles. Read at 8 PM from its reporting area, Santa Rosa (CA), 11 miles off.

45Good
  • Fine particles (PM2.5)45Good-
  • Ozone28Good-

The days ahead

Good each day through Tue Oct 20, led by ozone. Yesterday measured 39, good.

Smoke, the next 45 hours

Little smoke near the ground through Sat 5 PM: the index from smoke stays at 6 or under.

FriSat

Precipitation

What has fallen at Glen Ellen

None in the last 3 days, to Thu 8 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 Glen Ellen, the next 45 hours

Visibility stays 10 miles or more through Sat 5 PM.

FriSat

On the radar over Glen Ellen, CaliforniaReflectivityStorm topsRain rateRain, last 24 hoursForecast temperatureForecast rain totalEvery picture

What is measuring near here

The 6 instruments nearest Glen Ellen, how far away each one is, how high it stands, and what kind of measurement it makes. The nearest is 0.8 miles away.

measured now4 instruments

Bodega 6 WSW93245

At a climate reference station/28.6 mi away/63 ft/616 ft below here

temp, humidity, wind, solar, precip

Rank-

measured daily2 instruments

Glen Ellen 0.5 ENECA-SN-40

In a volunteer observer's own ground/0.8 mi away/320 ft/359 ft below here

precip, snowfall, snow depth

Rank-

SonomaSMAC1

At a cooperative observer's station/5.9 mi away/137 ft/542 ft below here

snowfall, snow depth, precip, high, low

Rank-

Station report

The weather at Petaluma, drawn

The nearest airport reporting now, 7.5 mi from Glen Ellen, California. From its report of Oct 15, 2026, 9:15 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 Petaluma, 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 O69FIG. A THE SKY OVER PETALUMASECTION, 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 MORE0510TITLEPetaluma, the skySTATION REPORT · ASOS O69TYPESECTIONSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 1 of 6DATE2026-10-16IDSR-O69-1DRAWN AS linework on paperSOURCES FB-SKY-001

The air

57.2 F with a dew point of 41.0 F, 55 per cent relative humidity. Air lifted from the station would cool to its dew point, where cloud forms, about 3,700 ft up.

Chart of the air at Petaluma: temperature 57.2 degrees Fahrenheit and dew point 41.0, 55 per cent relative humidity; air lifted from the station cools along the dry rate and meets its dew point about 3,700 feet above the station; height to scale.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT O69FIG. B THE AIR AT PETALUMATHE 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 3,700 FT ABOVE THE STATION, AT 37.4 FTEMPERATURE 57.2 FDEW POINT 41.0 FSPREAD 16.2 FRELATIVE HUMIDITY 55 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 POINTTITLEPetaluma, the airSTATION REPORT · ASOS O69TYPECHARTSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 2 of 6DATE2026-10-16IDSR-O69-2DRAWN AS linework on paperSOURCES FB-WAT-002, FB-ENG-011, FB-ENG-005

The wind

From the north northwest (340 degrees) at 3 mph: force 1, a light air on the Beaufort scale.

Plan of the wind at Petaluma, north up: blowing from 340 degrees, the north northwest, 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 O69FIG. C THE WIND AT PETALUMAPLAN, NORTH UP: THE WIND AS REPORTED, AND WHERE IT SITS ON THE BEAUFORT SCALENESWTHE STATIONFROM 340°BEAUFORT FORCELEAST WIND, MPH0CALM01LIGHT AIR1NOW, 3 MPH2LIGHT BREEZE43GENTLE BREEZE84MODERATE BREEZE135FRESH BREEZE196STRONG BREEZE257NEAR GALE328GALE399STRONG GALE4710STORM5511VIOLENT STORM6412HURRICANE FORCE73TITLEPetaluma, the windSTATION REPORT · ASOS O69TYPEPLAN north upSCALENOT TO SCALEREVAS REPORTED SHEET 3 of 6DATE2026-10-16IDSR-O69-3DRAWN AS linework on paperSOURCES FB-EVT-150, FB-ENG-008, FB-INS-002

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

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Snow on the ground

Elsewhere in California

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

Near Glen Ellen

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

Near Glen Ellen

River and lake gauges