Storm Station
Union City, California
66°
Mostly clear· Feels like 66°·Gentle breeze 11 mph NW
Mostly cloudy, with a low around 56. West southwest wind around 5 mph.
-UV
50Air quality
61%Humidity
12%Cloud

What is measuring near here

The 4 instruments nearest Union City, 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 now2 instruments

HaywardHWD

At an airfield/6.0 mi away/29 ft/8 ft above here

temp, wind, gust, visibility, precip, pressure

Rank5of 3,115

Pleasanton - Calaveras RoadPEAC1

At a river or reservoir gauge/11.7 mi away/1,176 ft/1,155 ft above here

temp, wind, gust, humidity, pressure

Rank-

measured daily2 instruments

Union City 1.3 SCA-AL-47

In a volunteer observer's own ground/1.9 mi away/46 ft/25 ft above here

precip, snowfall, snow depth

Rank-

FremontFETC1

At a cooperative observer's station/3.9 mi away/39 ft/18 ft above here

snowfall, snow depth, precip, high, low

Rank-

Station report

The weather at Hayward, drawn

The nearest airport reporting now, 6.0 mi from Union City. From its report of Sep 27, 2026, 12:23 AM local time: 3 of its 6 sheets.

The sky

Scattered at 1,300 ft; visibility 10 mi or more.

Section of the sky over Hayward, height above the station to scale: scattered cloud with its base at 1,300 feet, and visibility of 10 mi or more.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT HWDFIG. A THE SKY OVER HAYWARDSECTION, 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 SHEETSCT 1,300 FTSCATTERED, 3 TO 4 EIGHTHS OF THE SKYVISIBILITY, MILES: 10 MI OR MORE0510TITLEHayward, the skySTATION REPORT · ASOS HWDTYPESECTIONSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 1 of 6DATE2026-09-27IDSR-HWD-1DRAWN AS linework on paperSOURCES FB-SKY-001, FB-SKY-017, FB-SKY-016, FB-SKY-018

The air

58.0 F with a dew point of 53.0 F, 83 per cent relative humidity. Air lifted from the station would cool to its dew point, where cloud forms, about 1,200 ft up; the lowest cloud reported is at 1,300 ft.

Chart of the air at Hayward: temperature 58.0 degrees Fahrenheit and dew point 53.0, 83 per cent relative humidity; air lifted from the station cools along the dry rate and meets its dew point about 1,200 feet above the station, against the lowest cloud reported at 1,300 feet; height to scale.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT HWDFIG. B THE AIR AT HAYWARDTHE REPORTED TEMPERATURE AND DEW POINT, AND AIR LIFTED FROM THE STATION WITHOUT MIXING UNTIL IT SATURATES; HEIGHT ABOVE THE STATION TO SCALEFT ABOVE THE STATION01,0002,0003,00040 F50 F60 F70 FSATURATES 1,200 FT ABOVE THE STATION, AT 51.8 FLOWEST CLOUD REPORTED, SCT 1,300 FTTEMPERATURE 58.0 FDEW POINT 53.0 FSPREAD 5.0 FRELATIVE HUMIDITY 83 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 POINTTITLEHayward, the airSTATION REPORT · ASOS HWDTYPECHARTSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 2 of 6DATE2026-09-27IDSR-HWD-2DRAWN AS linework on paperSOURCES FB-WAT-002, FB-ENG-011, FB-ENG-005

The wind

From the west (280 degrees) at 7 mph: force 2, a light breeze on the Beaufort scale.

Plan of the wind at Hayward, north up: blowing from 280 degrees, the west, at 7 miles an hour; beside it the Beaufort scale from calm to hurricane force, force 2, light breeze, marked.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT HWDFIG. C THE WIND AT HAYWARDPLAN, NORTH UP: THE WIND AS REPORTED, AND WHERE IT SITS ON THE BEAUFORT SCALENESWTHE STATIONFROM 280°BEAUFORT FORCELEAST WIND, MPH0CALM01LIGHT AIR12LIGHT BREEZE4NOW, 7 MPH3GENTLE BREEZE84MODERATE BREEZE135FRESH BREEZE196STRONG BREEZE257NEAR GALE328GALE399STRONG GALE4710STORM5511VIOLENT STORM6412HURRICANE FORCE73TITLEHayward, the windSTATION REPORT · ASOS HWDTYPEPLAN north upSCALENOT TO SCALEREVAS REPORTED SHEET 3 of 6DATE2026-09-27IDSR-HWD-3DRAWN AS linework on paperSOURCES FB-EVT-150, FB-ENG-008, FB-INS-002

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

-in

Snow on the ground

Elsewhere in California

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

Near Union City

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