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Fetters Hot Springs-Agua Caliente, California

Community in Sonoma County, California

Air quality

The air at Fetters Hot Springs-Agua Caliente

Index 43, good, led by fine particles. Read at 2 PM from its reporting area, Napa (CA), 11 miles off.

43Good
  • Fine particles (PM2.5)43Good24.1 mi
  • Ozone31Good35 ppb23.4 mi
  • Nitrogen dioxide3Good3.1 ppb24.1 mi
  • Carbon monoxide-0.2 ppm24.1 mi

The days ahead

Highest 60, moderate, today, led by ozone. Yesterday measured 33, good.

Smoke, the next 45 hours

No smoke near the ground through Wed 11 AM.

MonTueWed

Precipitation

What has fallen at Fetters Hot Springs-Agua Caliente

None in the last 3 days, to Mon 2 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 Fetters Hot Springs-Agua Caliente, the next 45 hours

Visibility stays 8 miles or more through Wed 11 AM, lowest 9 miles Tue 1 AM.

MonTueWed

On the radar over Fetters Hot Springs-Agua Caliente, CaliforniaReflectivityStorm topsRain rateRain, last 24 hoursForecast temperatureForecast rain totalEvery picture

What is measuring near here

The 6 instruments nearest Fetters Hot Springs-Agua Caliente, how far away each one is, how high it stands, and what kind of measurement it makes. The nearest is 1.0 miles away.

measured now4 instruments

PetalumaO69

At an airfield/7.8 mi away/90 ft/49 ft below here

temp, wind, gust, visibility, precip, pressure

Rank937of 4,431

Bodega 6 WSW93245

At a climate reference station/31.5 mi away/63 ft/76 ft below here

temp, humidity, wind, solar, precip

Rank-

measured daily2 instruments

Boyes Hot Springs 0.5 ENECA-SN-84

In a volunteer observer's own ground/1.0 mi away/295 ft/156 ft above here

precip, snowfall, snow depth

Rank-

SonomaSMAC1

At a cooperative observer's station/2.2 mi away/137 ft/2 ft below here

snowfall, snow depth, precip, high, low

Rank-

Station report

The weather at Petaluma, drawn

The nearest airport reporting now, 7.8 mi from Fetters Hot Springs-Agua Caliente, California. From its report of Oct 19, 2026, 2:35 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 6DATE2026-10-19IDSR-O69-1DRAWN AS linework on paperSOURCES FB-SKY-001

The air

64.4 F with a dew point of 42.8 F, 45 per cent relative humidity. Air lifted from the station would cool to its dew point, where cloud forms, about 4,900 ft up.

Chart of the air at Petaluma: temperature 64.4 degrees Fahrenheit and dew point 42.8, 45 per cent relative humidity; air lifted from the station cools along the dry rate and meets its dew point about 4,900 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 STATION01,0002,0003,0004,0005,0006,0007,00030 F40 F50 F60 F70 F80 FSATURATES 4,900 FT ABOVE THE STATION, AT 38.1 FTEMPERATURE 64.4 FDEW POINT 42.8 FSPREAD 21.6 FRELATIVE HUMIDITY 45 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 6DATE2026-10-19IDSR-O69-2DRAWN AS linework on paperSOURCES FB-WAT-002, FB-ENG-011, FB-ENG-005

The wind

From the west (270 degrees) at 12 mph: force 3, a gentle breeze on the Beaufort scale. The strongest gust today was 18 mph.

Plan of the wind at Petaluma, north up: blowing from 270 degrees, the west, at 12 miles an hour; beside it the Beaufort scale from calm to hurricane force, force 3, gentle breeze, 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 270°BEAUFORT FORCELEAST WIND, MPH0CALM01LIGHT AIR12LIGHT BREEZE43GENTLE BREEZE8NOW, 12 MPH4MODERATE BREEZE135FRESH BREEZE196STRONG BREEZE257NEAR GALE328GALE399STRONG GALE4710STORM5511VIOLENT STORM6412HURRICANE FORCE73TITLEPetaluma, the windSTATION REPORT · ASOS O69TYPEPLAN north upSCALENOT TO SCALEREVAS REPORTED SHEET 3 of 6DATE2026-10-19IDSR-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 Fetters Hot Springs-Agua Caliente

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

Near Fetters Hot Springs-Agua Caliente

River and lake gauges