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Santa Margarita, California

Community in San Luis Obispo County, California

Air quality

The air at Santa Margarita

Index 39, good, led by fine particles. Read at 2 AM from its reporting area, Atascadero (CA), 8 miles off.

39Good
  • Fine particles (PM2.5)39Good7.9 mi
  • Ozone19Good13 ppb7.9 mi
  • Coarse particles (PM10)26Good7.9 mi
  • Nitrogen dioxide8Good9.3 ppb7.9 mi

The days ahead

Good each day through Tue Oct 20, led by ozone. Yesterday measured 45, good.

Smoke, the next 45 hours

Little smoke near the ground through Sat 11 PM: the index from smoke stays at 11 or under.

FriSat

Precipitation

What has fallen at Santa Margarita

None in the last 3 days, to Fri 2 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 Santa Margarita, the next 45 hours

Visibility stays 10 miles or more through Sat 11 PM.

FriSat

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

What is measuring near here

The 6 instruments nearest Santa Margarita, how far away each one is, how high it stands, and what kind of measurement it makes. The nearest is 2.0 miles away.

measured now4 instruments

measured daily2 instruments

Santa Margarita BoosterSMRC1

At a cooperative observer's station/2.0 mi away/1,161 ft/147 ft above here

snowfall, snow depth, precip, high, low

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Station report

The weather at San Luis Obispo, drawn

The nearest airport reporting now, 10.6 mi from Santa Margarita, California. From its report of Oct 16, 2026, 2:56 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 San Luis Obispo, 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 SBPFIG. A THE SKY OVER SAN LUIS OBISPOSECTION, 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 MORE0510TITLESan Luis Obispo, the skySTATION REPORT · ASOS SBPTYPESECTIONSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 1 of 6DATE2026-10-16IDSR-SBP-1DRAWN AS linework on paperSOURCES FB-SKY-001

The air

57.0 F with a dew point of 38.0 F, 49 per cent relative humidity. Air lifted from the station would cool to its dew point, where cloud forms, about 4,300 ft up.

Chart of the air at San Luis Obispo: temperature 57.0 degrees Fahrenheit and dew point 38.0, 49 per cent relative humidity; air lifted from the station cools along the dry rate and meets its dew point about 4,300 feet above the station; height to scale.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT SBPFIG. B THE AIR AT SAN LUIS OBISPOTHE 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 4,300 FT ABOVE THE STATION, AT 34.0 FTEMPERATURE 57.0 FDEW POINT 38.0 FSPREAD 19.0 FRELATIVE HUMIDITY 49 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 POINTTITLESan Luis Obispo, the airSTATION REPORT · ASOS SBPTYPECHARTSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 2 of 6DATE2026-10-16IDSR-SBP-2DRAWN AS linework on paperSOURCES FB-WAT-002, FB-ENG-011, FB-ENG-005

The wind

From the east southeast (120 degrees) at 3 mph: force 1, a light air on the Beaufort scale.

Plan of the wind at San Luis Obispo, north up: blowing from 120 degrees, the east southeast, 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 SBPFIG. C THE WIND AT SAN LUIS OBISPOPLAN, NORTH UP: THE WIND AS REPORTED, AND WHERE IT SITS ON THE BEAUFORT SCALENESWTHE STATIONFROM 120°BEAUFORT FORCELEAST WIND, MPH0CALM01LIGHT AIR1NOW, 3 MPH2LIGHT BREEZE43GENTLE BREEZE84MODERATE BREEZE135FRESH BREEZE196STRONG BREEZE257NEAR GALE328GALE399STRONG GALE4710STORM5511VIOLENT STORM6412HURRICANE FORCE73TITLESan Luis Obispo, the windSTATION REPORT · ASOS SBPTYPEPLAN north upSCALENOT TO SCALEREVAS REPORTED SHEET 3 of 6DATE2026-10-16IDSR-SBP-3DRAWN AS linework on paperSOURCES FB-EVT-150, FB-ENG-008, FB-INS-002

The full report of San Luis Obispo, 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 Santa Margarita

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

Near Santa Margarita

River and lake gauges