Storm Station
Sign in

San Pasqual, California

Community in Los Angeles County, California

Air quality

The air at San Pasqual

Index 23, good, led by ozone. Read at 11 PM from its reporting area, W San Gabriel Vly (CA), 2 miles off.

23Good
  • Fine particles (PM2.5)-8.9 mi
  • Ozone23Good26 ppb1.6 mi
  • Coarse particles (PM10)-8.9 mi
  • Nitrogen dioxide13Good14.1 ppb1.6 mi
  • Sulfur dioxide0Good0.5 ppb8.9 mi
  • Carbon monoxide-1.1 ppm8.9 mi

The days ahead

Good each day through Today, led by ozone. Yesterday measured 45, good.

Smoke, the next 42 hours

Little smoke near the ground through Sat 5 PM: the index from smoke stays at 17 or under.

FriSat

Precipitation

What has fallen at San Pasqual

None in the last 3 days, to Thu 11 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 San Pasqual, the next 42 hours

Visibility stays 10 miles or more through Sat 5 PM.

FriSat

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

What is measuring near here

The 6 instruments nearest San Pasqual, how far away each one is, how high it stands, and what kind of measurement it makes. The nearest is 0.4 miles away.

measured now4 instruments

El MonteEMT

At an airfield/5.3 mi away/295 ft/404 ft below here

temp, wind, gust, visibility, precip, pressure

Rank4,211of 4,465

measured daily2 instruments

Pasadena 2.7 ESECA-LA-118

In a volunteer observer's own ground/0.4 mi away/718 ft/19 ft above here

precip, snowfall, snow depth

Rank-

Pasadena - San Gabriel FireJBLC1

At a cooperative observer's station/2.3 mi away/468 ft/231 ft below here

snowfall, snow depth, precip, high, low

Rank-

Station report

The weather at Henninger Flats, drawn

The nearest instrument reporting now, 3.9 mi from San Pasqual, California. From its report of Oct 15, 2026, 11:58 PM local time: 3 of its 5 sheets.

The air

75.0 F with a dew point of 32.4 F, 21 per cent relative humidity. Air lifted from the station would cool to its dew point, where cloud forms, about 9,600 ft up.

Chart of the air at Henninger Flats: temperature 75.0 degrees Fahrenheit and dew point 32.4, 21 per cent relative humidity; air lifted from the station cools along the dry rate and meets its dew point about 9,600 feet above the station; height to scale.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT HNGC1FIG. B THE AIR AT HENNINGER FLATSTHE REPORTED TEMPERATURE AND DEW POINT, AND AIR LIFTED FROM THE STATION WITHOUT MIXING UNTIL IT SATURATES; HEIGHT ABOVE THE STATION TO SCALEFT ABOVE THE STATION02,0004,0006,0008,00010,00012,00010 F30 F50 F70 F90 FSATURATES 9,600 FT ABOVE THE STATION, AT 23.8 FTEMPERATURE 75.0 FDEW POINT 32.4 FSPREAD 42.6 FRELATIVE HUMIDITY 21 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 POINTTITLEHenninger Flats, the airSTATION REPORT · DCP HNGC1TYPECHARTSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 1 of 5DATE2026-10-16IDSR-HNGC1-1DRAWN AS linework on paperSOURCES FB-WAT-002, FB-ENG-011, FB-ENG-005

The wind

From the south southwest (205 degrees) at 12 mph, gusting 31 mph: force 3, a gentle breeze on the Beaufort scale. The strongest gust today was 44 mph.

Plan of the wind at Henninger Flats, north up: blowing from 205 degrees, the south southwest, at 12 miles an hour, gusting 31; beside it the Beaufort scale from calm to hurricane force, force 3, gentle breeze, marked.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT HNGC1FIG. C THE WIND AT HENNINGER FLATSPLAN, NORTH UP: THE WIND AS REPORTED, AND WHERE IT SITS ON THE BEAUFORT SCALENESWTHE STATIONFROM 205°BEAUFORT FORCELEAST WIND, MPH0CALM01LIGHT AIR12LIGHT BREEZE43GENTLE BREEZE8NOW, 12 MPH4MODERATE BREEZE135FRESH BREEZE196STRONG BREEZE25GUST, 31 MPH7NEAR GALE328GALE399STRONG GALE4710STORM5511VIOLENT STORM6412HURRICANE FORCE73TITLEHenninger Flats, the windSTATION REPORT · DCP HNGC1TYPEPLAN north upSCALENOT TO SCALEREVAS REPORTED SHEET 2 of 5DATE2026-10-16IDSR-HNGC1-2DRAWN AS linework on paperSOURCES FB-EVT-150, FB-ENG-008

The column

At 2,858 ft above sea level, 10 per cent of the atmosphere's air lies below the station. The standard atmosphere puts the pressure there at 26.96 inHg and the temperature at 48.8 F; it reports 75.0 F, 26.2 F warmer than standard.

Section from sea level of where Henninger Flats stands in the atmosphere, height to scale: the station 2,858 feet above sea level with 10 per cent of the air below it; the standard atmosphere's pressure there, 26.96 inches of mercury, and temperature, 48.8 degrees Fahrenheit.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT HNGC1FIG. D WHERE HENNINGER FLATS STANDS IN THE ATMOSPHERESECTION FROM SEA LEVEL, HEIGHT TO SCALE, THE STATION IN THE STANDARD ATMOSPHEREFT ABOVE SEA LEVEL05,00010,00015,000SEA LEVEL, 29.92 inHg IN THE STANDARD ATMOSPHEREHENNINGER FLATS10 PER CENT OF THE AIR BELOW IT2,858 FT10 PER CENT OF THE AIR BELOW, 2,890 FT20 PER CENT OF THE AIR BELOW, 6,050 FT30 PER CENT OF THE AIR BELOW, 9,540 FT40 PER CENT OF THE AIR BELOW, 13,470 FTSTANDARD PRESSURE HERE26.96 inHgSTANDARD TEMPERATURE HERE48.8 FTEMPERATURE, REPORTED75.0 FTITLEHenninger Flats, the columnSTATION REPORT · DCP HNGC1TYPESECTIONSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 3 of 5DATE2026-10-16IDSR-HNGC1-3DRAWN AS linework on paperSOURCES FB-ENG-001, FB-ENG-003

The full report of Henninger Flats, in 5 sheets, each beside the Field Book plates that explain it

-

Snow on the ground

Elsewhere in California

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

Near San Pasqual

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

Near San Pasqual

River and lake gauges