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McSwain, California

Community in Merced County, California

Air quality

The air at McSwain

Index 67, moderate, led by coarse particles. Read at 9 PM from its reporting area, Merced (CA), 6 miles off.

67Moderate
  • Fine particles (PM2.5)56Moderate-
  • Ozone31Good-
  • Coarse particles (PM10)67Moderate-

The days ahead

Moderate each day through Fri Oct 16, led by coarse particles. Yesterday measured 54, moderate.

Smoke, the next 44 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 McSwain

None in the last 3 days, to Thu 8 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 McSwain, the next 44 hours

Visibility stays 10 miles or more through Sat 5 PM.

FriSat

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

What is measuring near here

The 7 instruments nearest McSwain, how far away each one is, how high it stands, and what kind of measurement it makes. The nearest is 1.9 miles away.

measured now5 instruments

MercedMCE

At an airfield/4.4 mi away/149 ft/3 ft above here

temp, wind, gust, visibility, precip, pressure

Rank47of 4,465

UC MercedUCMC1

At a river or reservoir gauge/9.7 mi away/260 ft/114 ft above here

temp, wind, gust, humidity, pressure

Rank329of 4,465

measured daily2 instruments

MercedMCEC1

At a cooperative observer's station/4.7 mi away/161 ft/15 ft above here

snowfall, snow depth, precip, high, low

Rank-

Merced 1.2 NECA-ME-6

In a volunteer observer's own ground/6.6 mi away/211 ft/65 ft above here

precip, snowfall, snow depth

Rank-

Station report

The weather at Merced, drawn

The nearest airport reporting now, 4.4 mi from McSwain, California. From its report of Oct 15, 2026, 8:53 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 Merced, 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 MCEFIG. A THE SKY OVER MERCEDSECTION, 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 MORE0510TITLEMerced, the skySTATION REPORT · ASOS MCETYPESECTIONSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 1 of 6DATE2026-10-16IDSR-MCE-1DRAWN AS linework on paperSOURCES FB-SKY-001

The air

64.0 F with a dew point of 42.0 F, 45 per cent relative humidity. Air lifted from the station would cool to its dew point, where cloud forms, about 5,000 ft up.

Chart of the air at Merced: temperature 64.0 degrees Fahrenheit and dew point 42.0, 45 per cent relative humidity; air lifted from the station cools along the dry rate and meets its dew point about 5,000 feet above the station; height to scale.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT MCEFIG. B THE AIR AT MERCEDTHE REPORTED TEMPERATURE AND DEW POINT, AND AIR LIFTED FROM THE STATION WITHOUT MIXING UNTIL IT SATURATES; HEIGHT ABOVE THE STATION TO SCALEFT ABOVE THE STATION01,0002,0003,0004,0005,0006,0007,00030 F40 F50 F60 F70 FSATURATES 5,000 FT ABOVE THE STATION, AT 37.3 FTEMPERATURE 64.0 FDEW POINT 42.0 FSPREAD 22.0 FRELATIVE HUMIDITY 45 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 POINTTITLEMerced, the airSTATION REPORT · ASOS MCETYPECHARTSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 2 of 6DATE2026-10-16IDSR-MCE-2DRAWN AS linework on paperSOURCES FB-WAT-002, FB-ENG-011, FB-ENG-005

The wind

Calm.

Plan of the wind at Merced, 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 MCEFIG. C THE WIND AT MERCEDPLAN, 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 FORCE73TITLEMerced, the windSTATION REPORT · ASOS MCETYPEPLAN north upSCALENOT TO SCALEREVAS REPORTED SHEET 3 of 6DATE2026-10-16IDSR-MCE-3DRAWN AS linework on paperSOURCES FB-EVT-150, FB-ENG-008, FB-INS-002

The full report of Merced, 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 McSwain

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

Near McSwain

River and lake gauges