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Los Altos Hills, California

Town in Santa Clara County, California

Air quality

The air at Los Altos Hills

Index 34, good, led by fine particles. Read at 8 PM from its reporting area, Redwood City (CA), 9 miles off.

34Good
  • Fine particles (PM2.5)34Good8.5 mi
  • Ozone20Good20 ppb8.5 mi
  • Nitrogen dioxide23Good24.8 ppb8.5 mi
  • Carbon monoxide-0.4 ppm8.5 mi

The days ahead

Good each day through Wed Oct 21, led by ozone. Yesterday measured 46, good.

Smoke, the next 45 hours

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

SatSun

Precipitation

What has fallen at Los Altos Hills

None in the last 3 days, to Fri 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 Los Altos Hills, the next 45 hours

Visibility stays 10 miles or more through Sun 5 PM.

SatSun

On the radar over Los Altos Hills, CaliforniaReflectivityStorm topsRain rateRain, last 24 hoursForecast temperatureForecast rain totalEvery picture

What is measuring near here

The 5 instruments nearest Los Altos Hills, how far away each one is, how high it stands, and what kind of measurement it makes. The nearest is 1.1 miles away.

measured now3 instruments

measured daily2 instruments

Skyline Ridge PreserveSKYC1

In a park or preserve/4.6 mi away/2,253 ft/1,868 ft above here

snowfall, snow depth, precip, high, low

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Station report

The weather at Moffett NAS/Mtn Vie, drawn

The nearest airport reporting now, 5.6 mi from Los Altos Hills, California. From its report of Oct 16, 2026, 8:55 PM local time: 3 of its 6 sheets.

The sky

No cloud below 12,000 ft; visibility 9 mi.

Section of the sky over Moffett NAS/Mtn Vie, height above the station to scale: no cloud detected below 12,000 feet, the reach of its ceilometer, and visibility of 9 mi.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT NUQFIG. A THE SKY OVER MOFFETT NAS/MTN VIESECTION, 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: 9 MI0510TITLEMoffett NAS/Mtn Vie, the skySTATION REPORT · ASOS NUQTYPESECTIONSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 1 of 6DATE2026-10-17IDSR-NUQ-1DRAWN AS linework on paperSOURCES FB-SKY-001

The air

71.6 F with a dew point of 48.2 F, 43 per cent relative humidity. Air lifted from the station would cool to its dew point, where cloud forms, about 5,400 ft up.

Chart of the air at Moffett NAS/Mtn Vie: temperature 71.6 degrees Fahrenheit and dew point 48.2, 43 per cent relative humidity; air lifted from the station cools along the dry rate and meets its dew point about 5,400 feet above the station; height to scale.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT NUQFIG. B THE AIR AT MOFFETT NAS/MTN VIETHE 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 F80 FSATURATES 5,400 FT ABOVE THE STATION, AT 43.1 FTEMPERATURE 71.6 FDEW POINT 48.2 FSPREAD 23.4 FRELATIVE HUMIDITY 43 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 POINTTITLEMoffett NAS/Mtn Vie, the airSTATION REPORT · ASOS NUQTYPECHARTSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 2 of 6DATE2026-10-17IDSR-NUQ-2DRAWN AS linework on paperSOURCES FB-WAT-002, FB-ENG-011, FB-ENG-005

The wind

From the west southwest (240 degrees) at 3 mph: force 1, a light air on the Beaufort scale. The strongest gust today was 13 mph.

Plan of the wind at Moffett NAS/Mtn Vie, north up: blowing from 240 degrees, the west southwest, at 3 miles an hour; beside it the Beaufort scale from calm to hurricane force, force 1, light air, marked.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT NUQFIG. C THE WIND AT MOFFETT NAS/MTN VIEPLAN, NORTH UP: THE WIND AS REPORTED, AND WHERE IT SITS ON THE BEAUFORT SCALENESWTHE STATIONFROM 240°BEAUFORT FORCELEAST WIND, MPH0CALM01LIGHT AIR1NOW, 3 MPH2LIGHT BREEZE43GENTLE BREEZE84MODERATE BREEZE135FRESH BREEZE196STRONG BREEZE257NEAR GALE328GALE399STRONG GALE4710STORM5511VIOLENT STORM6412HURRICANE FORCE73TITLEMoffett NAS/Mtn Vie, the windSTATION REPORT · ASOS NUQTYPEPLAN north upSCALENOT TO SCALEREVAS REPORTED SHEET 3 of 6DATE2026-10-17IDSR-NUQ-3DRAWN AS linework on paperSOURCES FB-EVT-150, FB-ENG-008, FB-INS-002

The full report of Moffett NAS/Mtn Vie, 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 Los Altos Hills

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

Near Los Altos Hills

River and lake gauges