Storm Station
Lake San Marcos, California
72° 81°/67°
Partly cloudy· Feels like 72°·Light air 2 mph S
Cloudy, with a low around 70. Southeast wind 0 to 5 mph.
0UV Low
56Air quality
82%Humidity
67%Cloud
Now
12:15 AM
72feels72
now, partly cloudy
Today
Sep 27
8167
UV 7
drizzle light
Mon
Sep 28
7861
UV 7
partly cloudy day
Tue
Sep 29
8058
UV 7
clear day
Wed
Sep 30
8160
UV 7
clear day
Thu
Oct 1
8561
UV 7
clear day
Fri
Oct 2
10265
UV 7
clear day
Sat
Oct 3
10075
14mph
UV 7
clear day
72°
81°67°
78°61°
80°58°
81°60°
85°61°
102°65°
100°75°

As of 12:15 AM in Lake San Marcos, California.

What is measuring near here

The 5 instruments nearest Lake San Marcos, how far away each one is, how high it stands, and what kind of measurement it makes. The nearest is 0.3 miles away.

measured now3 instruments

San Marcos Cnty LandfillNMLC1

At a river or reservoir gauge/2.6 mi away/728 ft/205 ft above here

temp, wind, gust, humidity, pressure

Rank2,684of 3,115

Carlsbad/PalomarCRQ

At an airfield/4.1 mi away/328 ft/195 ft below here

temp, wind, gust, visibility, precip, pressure

Rank39of 3,115

Fallbrook 5 NE53151

At a climate reference station/21.2 mi away/1,140 ft/617 ft above here

temp, humidity, wind, solar, precip

Rank-

measured daily2 instruments

San Marcos 2.0 WSWCA-SD-153

In a volunteer observer's own ground/0.3 mi away/512 ft/11 ft below here

precip, snowfall, snow depth

Rank-

Escondido No 2ESCC1

At a cooperative observer's station/7.1 mi away/666 ft/143 ft above here

snowfall, snow depth, precip, high, low

Rank-

Station report

The weather at Carlsbad/Palomar, drawn

The nearest airport reporting now, 4.1 mi from Lake San Marcos. From its report of Sep 26, 2026, 11:53 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 Carlsbad/Palomar, 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 CRQFIG. A THE SKY OVER CARLSBAD/PALOMARSECTION, 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 MORE0510TITLECarlsbad/Palomar, the skySTATION REPORT · ASOS CRQTYPESECTIONSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 1 of 6DATE2026-09-27IDSR-CRQ-1DRAWN AS linework on paperSOURCES FB-SKY-001

The air

72.0 F with a dew point of 69.0 F, 90 per cent relative humidity. Air lifted from the station would cool to its dew point, where cloud forms, about 700 ft up.

Chart of the air at Carlsbad/Palomar: temperature 72.0 degrees Fahrenheit and dew point 69.0, 90 per cent relative humidity; air lifted from the station cools along the dry rate and meets its dew point about 700 feet above the station; height to scale.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT CRQFIG. B THE AIR AT CARLSBAD/PALOMARTHE REPORTED TEMPERATURE AND DEW POINT, AND AIR LIFTED FROM THE STATION WITHOUT MIXING UNTIL IT SATURATES; HEIGHT ABOVE THE STATION TO SCALEFT ABOVE THE STATION01,0002,0003,00060 F70 F80 FSATURATES 700 FT ABOVE THE STATION, AT 68.2 FTEMPERATURE 72.0 FDEW POINT 69.0 FSPREAD 3.0 FRELATIVE HUMIDITY 90 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 POINTTITLECarlsbad/Palomar, the airSTATION REPORT · ASOS CRQTYPECHARTSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 2 of 6DATE2026-09-27IDSR-CRQ-2DRAWN AS linework on paperSOURCES FB-WAT-020, FB-WAT-002, FB-ENG-011, FB-ENG-005

The wind

From the northwest (320 degrees) at 3 mph: force 1, a light air on the Beaufort scale.

Plan of the wind at Carlsbad/Palomar, north up: blowing from 320 degrees, the 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 CRQFIG. C THE WIND AT CARLSBAD/PALOMARPLAN, NORTH UP: THE WIND AS REPORTED, AND WHERE IT SITS ON THE BEAUFORT SCALENESWTHE STATIONFROM 320°BEAUFORT FORCELEAST WIND, MPH0CALM01LIGHT AIR1NOW, 3 MPH2LIGHT BREEZE43GENTLE BREEZE84MODERATE BREEZE135FRESH BREEZE196STRONG BREEZE257NEAR GALE328GALE399STRONG GALE4710STORM5511VIOLENT STORM6412HURRICANE FORCE73TITLECarlsbad/Palomar, the windSTATION REPORT · ASOS CRQTYPEPLAN north upSCALENOT TO SCALEREVAS REPORTED SHEET 3 of 6DATE2026-09-27IDSR-CRQ-3DRAWN AS linework on paperSOURCES FB-EVT-150, FB-ENG-008, FB-INS-002

The full report of Carlsbad/Palomar, in 6 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 Lake San Marcos

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