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Hopland, California

Community in Mendocino County, California

Air quality

The air at Hopland

Index 39, good, led by fine particles. Read at 3 AM from its reporting area, Ukiah (CA), 14 miles off.

39Good
  • Fine particles (PM2.5)39Good13.5 mi
  • Ozone11Good-

The days ahead

Yesterday measured 41, good.

Smoke, the next 45 hours

Little smoke near the ground through Sat 11 PM: the index from smoke stays at 11 or under.

FriSat

Precipitation

What has fallen at Hopland

None in the last 3 days, to Fri 2 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 Hopland, the next 45 hours

Visibility stays 10 miles or more through Sat 11 PM.

FriSat

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

What is measuring near here

The 5 instruments nearest Hopland, 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 now3 instruments

Hopland UcHPDC1

At a river or reservoir gauge/4.3 mi away/2,592 ft/2,106 ft above here

temp, wind, gust, humidity, pressure

Rank4,248of 4,465

UkiahUKI

At an airfield/11.6 mi away/607 ft/121 ft above here

temp, wind, gust, visibility, precip, pressure

Rank753of 4,465

measured daily2 instruments

Ukiah 10.1 SCA-MD-66

In a volunteer observer's own ground/5.8 mi away/1,133 ft/647 ft above here

precip, snowfall, snow depth

Rank-

CloverdaleCLVC1

At a cooperative observer's station/12.6 mi away/334 ft/152 ft below here

snowfall, snow depth, precip, high, low

Rank-

Station report

The weather at Ukiah, drawn

The nearest airport reporting now, 11.6 mi from Hopland, California. From its report of Oct 16, 2026, 2:56 AM 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 Ukiah, 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 UKIFIG. A THE SKY OVER UKIAHSECTION, 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 MORE0510TITLEUkiah, the skySTATION REPORT · ASOS UKITYPESECTIONSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 1 of 6DATE2026-10-16IDSR-UKI-1DRAWN AS linework on paperSOURCES FB-SKY-001

The air

53.0 F with a dew point of 38.0 F, 57 per cent relative humidity. Air lifted from the station would cool to its dew point, where cloud forms, about 3,400 ft up.

Chart of the air at Ukiah: temperature 53.0 degrees Fahrenheit and dew point 38.0, 57 per cent relative humidity; air lifted from the station cools along the dry rate and meets its dew point about 3,400 feet above the station; height to scale.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT UKIFIG. B THE AIR AT UKIAHTHE REPORTED TEMPERATURE AND DEW POINT, AND AIR LIFTED FROM THE STATION WITHOUT MIXING UNTIL IT SATURATES; HEIGHT ABOVE THE STATION TO SCALEFT ABOVE THE STATION01,0002,0003,0004,0005,00020 F30 F40 F50 F60 FSATURATES 3,400 FT ABOVE THE STATION, AT 34.7 FTEMPERATURE 53.0 FDEW POINT 38.0 FSPREAD 15.0 FRELATIVE HUMIDITY 57 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 POINTTITLEUkiah, the airSTATION REPORT · ASOS UKITYPECHARTSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 2 of 6DATE2026-10-16IDSR-UKI-2DRAWN AS linework on paperSOURCES FB-WAT-002, FB-ENG-011, FB-ENG-005

The wind

Calm.

Plan of the wind at Ukiah, 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 UKIFIG. C THE WIND AT UKIAHPLAN, 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 FORCE73TITLEUkiah, the windSTATION REPORT · ASOS UKITYPEPLAN north upSCALENOT TO SCALEREVAS REPORTED SHEET 3 of 6DATE2026-10-16IDSR-UKI-3DRAWN AS linework on paperSOURCES FB-EVT-150, FB-ENG-008, FB-INS-002

The full report of Ukiah, in 6 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 Hopland

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

Near Hopland

River and lake gauges