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Mokelumne Hill, California

Community in Calaveras County, California

Air quality

The air at Mokelumne Hill

Index 58, moderate, led by ozone. Read at 6 PM from its reporting area, Calaveras County (CA), 7 miles off.

58Moderate
  • Fine particles (PM2.5)12Good-
  • Ozone58Moderate-
  • Coarse particles (PM10)30Good-

The days ahead

Yesterday measured 49, good.

Smoke, the next 42 hours

Little smoke near the ground through Sun 11 AM: the index from smoke stays at 6 or under.

FriSatSun

Precipitation

What has fallen at Mokelumne Hill

None in the last 3 days, to Fri 5 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 Mokelumne Hill, the next 42 hours

Visibility stays 10 miles or more through Sun 11 AM.

FriSatSun

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

What is measuring near here

The 6 instruments nearest Mokelumne Hill, how far away each one is, how high it stands, and what kind of measurement it makes. The nearest is 4.3 miles away.

measured now4 instruments

JacksonJAQ

At an airfield/7.0 mi away/1,679 ft/216 ft above here

temp, wind, gust, visibility, precip, pressure

Rank4,031of 4,461

measured daily2 instruments

San AndreasADSC1

At a cooperative observer's station/7.1 mi away/1,030 ft/433 ft below here

snowfall, snow depth, precip, high, low

Rank2,317of 4,461

Station report

The weather at Jackson, drawn

The nearest airport reporting now, 7.0 mi from Mokelumne Hill, California. From its report of Oct 16, 2026, 6:35 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 Jackson, 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 JAQFIG. A THE SKY OVER JACKSONSECTION, 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 MORE0510TITLEJackson, the skySTATION REPORT · ASOS JAQTYPESECTIONSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 1 of 6DATE2026-10-17IDSR-JAQ-1DRAWN AS linework on paperSOURCES FB-SKY-001

The air

77.0 F with a dew point of 36.0 F, 23 per cent relative humidity. Air lifted from the station would cool to its dew point, where cloud forms, about 9,300 ft up.

Chart of the air at Jackson: temperature 77.0 degrees Fahrenheit and dew point 36.0, 23 per cent relative humidity; air lifted from the station cools along the dry rate and meets its dew point about 9,300 feet above the station; height to scale.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT JAQFIG. B THE AIR AT JACKSONTHE 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 FSATURATES 9,300 FT ABOVE THE STATION, AT 27.6 FTEMPERATURE 77.0 FDEW POINT 36.0 FSPREAD 41.0 FRELATIVE HUMIDITY 23 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 POINTTITLEJackson, the airSTATION REPORT · ASOS JAQTYPECHARTSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 2 of 6DATE2026-10-17IDSR-JAQ-2DRAWN AS linework on paperSOURCES FB-WAT-002, FB-ENG-011, FB-ENG-005

The wind

Calm.

Plan of the wind at Jackson, north up: calm; beside it the Beaufort scale from calm to hurricane force, force 0, calm, marked.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT JAQFIG. C THE WIND AT JACKSONPLAN, NORTH UP: THE WIND AS REPORTED, AND WHERE IT SITS ON THE BEAUFORT SCALENESWTHE STATIONCALMBEAUFORT FORCELEAST WIND, MPH0CALM0NOW, 0 MPH1LIGHT AIR12LIGHT BREEZE43GENTLE BREEZE84MODERATE BREEZE135FRESH BREEZE196STRONG BREEZE257NEAR GALE328GALE399STRONG GALE4710STORM5511VIOLENT STORM6412HURRICANE FORCE73TITLEJackson, the windSTATION REPORT · ASOS JAQTYPEPLAN north upSCALENOT TO SCALEREVAS REPORTED SHEET 3 of 6DATE2026-10-17IDSR-JAQ-3DRAWN AS linework on paperSOURCES FB-EVT-150, FB-ENG-008, FB-INS-002

The full report of Jackson, in 6 sheets, each beside the Field Book plates that explain it

0in

Snow on the ground

Measured at San Andreas (ADSC1), 7.1 miles from here, read 16 Oct, 07:00. measured daily

Elsewhere in California

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

Near Mokelumne Hill

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

Near Mokelumne Hill

River and lake gauges