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Julian, California

Community in San Diego County, California

Air quality

The air at Julian

Index 39, good, led by ozone. Read at 11 AM from its reporting area, San Diego Foothills (CA), 20 miles off.

39Good
  • Fine particles (PM2.5)19Good19.1 mi
  • Ozone39Good41 ppb19.1 mi
  • Coarse particles (PM10)33Good19.1 mi

The days ahead

Good each day through Today, led by ozone. Yesterday measured 44, good.

Smoke, the next 43 hours

No smoke near the ground through Sun 5 AM.

FriSatSun

Precipitation

What has fallen at Julian

None in the last 3 days, to Fri 10 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 Julian, the next 43 hours

Visibility stays 6 miles or more through Sun 5 AM, lowest 7 miles Sun 5 AM.

FriSatSun

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

What is measuring near here

The 5 instruments nearest Julian, how far away each one is, how high it stands, and what kind of measurement it makes. The nearest is 0.7 miles away.

measured now3 instruments

Julian CDFJULC1

At a river or reservoir gauge/0.7 mi away/4,190 ft/72 ft below here

temp, wind, gust, humidity, pressure

Rank1,006of 4,465

measured daily2 instruments

Julian CDFJULC1

At a cooperative observer's station/0.7 mi away/4,190 ft/72 ft below here

snowfall, snow depth, precip, high, low

Rank-

Ramona 8.7 ENECA-SD-156

In a volunteer observer's own ground/8.3 mi away/2,767 ft/1,495 ft below here

precip, snowfall, snow depth

Rank-

Station report

The weather at Ramona Airport, drawn

The nearest airport reporting now, 19.5 mi from Julian, California. From its report of Oct 16, 2026, 10:53 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 Ramona Airport, 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 RNMFIG. A THE SKY OVER RAMONA AIRPORTSECTION, 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 MORE0510TITLERamona Airport, the skySTATION REPORT · ASOS RNMTYPESECTIONSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 1 of 6DATE2026-10-16IDSR-RNM-1DRAWN AS linework on paperSOURCES FB-SKY-001

The air

85.0 F with a dew point of 40.0 F, 20 per cent relative humidity. Air lifted from the station would cool to its dew point, where cloud forms, about 10,200 ft up.

Chart of the air at Ramona Airport: temperature 85.0 degrees Fahrenheit and dew point 40.0, 20 per cent relative humidity; air lifted from the station cools along the dry rate and meets its dew point about 10,200 feet above the station; height to scale.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT RNMFIG. B THE AIR AT RAMONA AIRPORTTHE REPORTED TEMPERATURE AND DEW POINT, AND AIR LIFTED FROM THE STATION WITHOUT MIXING UNTIL IT SATURATES; HEIGHT ABOVE THE STATION TO SCALEFT ABOVE THE STATION02,0004,0006,0008,00010,00012,00020 F40 F60 F80 F100 FSATURATES 10,200 FT ABOVE THE STATION, AT 30.7 FTEMPERATURE 85.0 FDEW POINT 40.0 FSPREAD 45.0 FRELATIVE HUMIDITY 20 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 POINTTITLERamona Airport, the airSTATION REPORT · ASOS RNMTYPECHARTSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 2 of 6DATE2026-10-16IDSR-RNM-2DRAWN AS linework on paperSOURCES FB-WAT-002, FB-ENG-011, FB-ENG-005

The wind

From the east (100 degrees) at 18 mph, gusting 30 mph: force 4, a moderate breeze on the Beaufort scale. The strongest gust today was 44 mph.

Plan of the wind at Ramona Airport, north up: blowing from 100 degrees, the east, at 18 miles an hour, gusting 30; beside it the Beaufort scale from calm to hurricane force, force 4, moderate breeze, marked.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT RNMFIG. C THE WIND AT RAMONA AIRPORTPLAN, NORTH UP: THE WIND AS REPORTED, AND WHERE IT SITS ON THE BEAUFORT SCALENESWTHE STATIONFROM 100°BEAUFORT FORCELEAST WIND, MPH0CALM01LIGHT AIR12LIGHT BREEZE43GENTLE BREEZE84MODERATE BREEZE13NOW, 18 MPH5FRESH BREEZE196STRONG BREEZE25GUST, 30 MPH7NEAR GALE328GALE399STRONG GALE4710STORM5511VIOLENT STORM6412HURRICANE FORCE73TITLERamona Airport, the windSTATION REPORT · ASOS RNMTYPEPLAN north upSCALENOT TO SCALEREVAS REPORTED SHEET 3 of 6DATE2026-10-16IDSR-RNM-3DRAWN AS linework on paperSOURCES FB-EVT-150, FB-ENG-008, FB-INS-002

The full report of Ramona Airport, 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 Julian

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

Near Julian

River and lake gauges