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Farmington, California

Community in San Joaquin County, California

Air quality

The air at Farmington

Index 81, moderate, led by coarse particles. Read at 12 AM from its reporting area, Stockton (CA), 17 miles off.

81Moderate
  • Fine particles (PM2.5)78Moderate-
  • Ozone36Good-
  • Coarse particles (PM10)81Moderate-

The days ahead

Moderate each day through Today, led by coarse particles. Yesterday measured 50, good.

Smoke, the next 41 hours

Little smoke near the ground through Sat 5 PM: the index from smoke stays at 6 or under.

FriSat

Precipitation

What has fallen at Farmington

None in the last 3 days, to Fri 12 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 Farmington, the next 41 hours

Visibility stays 10 miles or more through Sat 5 PM.

FriSat

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

What is measuring near here

The 6 instruments nearest Farmington, how far away each one is, how high it stands, and what kind of measurement it makes. The nearest is 3.6 miles away.

measured now4 instruments

measured daily2 instruments

Linden 0.2 SSECA-SJ-12

In a volunteer observer's own ground/8.1 mi away/92 ft/13 ft below here

precip, snowfall, snow depth

Rank-

ModestoMODC1

At a cooperative observer's station/19.4 mi away/88 ft/17 ft below here

snowfall, snow depth, precip, high, low

Rank130of 4,465

Station report

The weather at Farmington Reservoir, drawn

The nearest instrument reporting now, 3.6 mi from Farmington, California. From its report of Oct 15, 2026, 11:59 PM local time: 3 of its 3 sheets.

The column

At 157 ft above sea level, 1 per cent of the atmosphere's air lies below the station. The standard atmosphere puts the pressure there at 29.75 inHg and the temperature at 58.4 F; it reports 57.6 F, 0.8 F colder than standard.

Section from sea level of where Farmington Reservoir stands in the atmosphere, height to scale: the station 157 feet above sea level with 1 per cent of the air below it; the standard atmosphere's pressure there, 29.75 inches of mercury, and temperature, 58.4 degrees Fahrenheit.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT FRGC1FIG. D WHERE FARMINGTON RESERVOIR 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 ATMOSPHEREFARMINGTON RESERVOIR1 PER CENT OF THE AIR BELOW IT157 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 HERE29.75 inHgSTANDARD TEMPERATURE HERE58.4 FTEMPERATURE, REPORTED57.6 FTITLEFarmington Reservoir, the columnSTATION REPORT · DCP FRGC1TYPESECTIONSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 1 of 3DATE2026-10-16IDSR-FRGC1-1DRAWN AS linework on paperSOURCES FB-ENG-001, FB-ENG-003

The sun

On Oct 16 the noon sun stands 43 degrees above the horizon at 37.91 N, and the day is 11 h 03 min long. Level ground there takes 68 per cent of the noon sunlight a surface facing the sun would.

Elevation of the noon sun at Farmington Reservoir, angles true: on Oct 16 it stands 43 degrees above the horizon, against 76 at the June solstice, 52 at the equinoxes and 29 at the December solstice; the day is 11 h 03 min long.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT FRGC1FIG. E THE SUN AT FARMINGTON RESERVOIRELEVATION LOOKING WEST, SOUTH TO THE LEFT: THE NOON SUN ON THE DAY OF THE REPORT, AND AT THE SOLSTICES AND EQUINOXES; ANGLES TRUETHE STATIONJUNE SOLSTICE 76°EQUINOXES 52°DECEMBER SOLSTICE 29°OCT 16, 43°SOUTHANGLES TRUE; THE RAYS ARE OF ONE LENGTH AND DRAW DIRECTION ONLYDAY LENGTH 11 H 03 MINLEVEL GROUND TAKES 68 PER CENT OF THE NOON SUN A FACING SURFACE WOULDLATITUDE 37.91 N; THE SUN'S DECLINATION -9.1°TITLEFarmington Reservoir, the sunSTATION REPORT · DCP FRGC1TYPEELEVATIONSCALEANGLES TRUEREVAS REPORTED SHEET 2 of 3DATE2026-10-16IDSR-FRGC1-2DRAWN AS linework on paperSOURCES FB-ENG-007

The instrument

A data collection platform, 157 ft above sea level. Its report of Oct 15, 2026, 11:59 PM local time is written on the sensors that made it.

Elevation of a data collection platform, Farmington Reservoir, each sensor drawn and labelled with what it read: antenna, sending by satellite, last heard oct 15, 2026, 11:59 pm local time; air temperature, 57.6 f; precipitation gauge, 0.00 in today.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT FRGC1FIG. F THE INSTRUMENTELEVATION OF A DATA COLLECTION PLATFORM, EACH SENSOR WITH WHAT IT READ, OCT 15, 2026, 11:59 PM LOCAL TIMEANTENNA, SENDING BY SATELLITELAST HEARD OCT 15, 2026, 11:59 PM LOCAL TIMEAIR TEMPERATURE57.6 FPRECIPITATION GAUGE0.00 IN TODAYSCHEMATIC; THE SPACING BETWEEN SENSORS IS NOT TO SCALETITLEFarmington Reservoir, the instrumentSTATION REPORT · DCP FRGC1TYPEELEVATIONSCALESCHEMATICREVAS REPORTED SHEET 3 of 3DATE2026-10-16IDSR-FRGC1-3DRAWN AS linework on paperSOURCES FB-INS-001

The full report of Farmington Reservoir, in 3 sheets, each beside the Field Book plates that explain it

0in

Snow on the ground

Measured at Modesto (MODC1), 19.4 miles from here, read 14 Oct, 23:59. measured daily

Elsewhere in California

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

Near Farmington

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

Near Farmington

River and lake gauges