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Moraga, California

Town in Contra Costa County, California

Air quality

The air at Moraga

Index 71, moderate, led by fine particles. Read at 8 PM from its reporting area, Oakland (CA), 9 miles off.

71Moderate
  • Fine particles (PM2.5)71Moderate9 mi
  • Ozone35Good19 ppb9 mi
  • Nitrogen dioxide18Good19.1 ppb9 mi
  • Sulfur dioxide0Good0.4 ppb9 mi
  • Carbon monoxide-0.5 ppm9 mi

The days ahead

Highest moderate, Sat Oct 17, led by fine particles. Yesterday measured 37, good.

Smoke, the next 45 hours

Little smoke near the ground through Sat 5 PM: the index from smoke stays at 17 or under.

FriSat

Precipitation

What has fallen at Moraga

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 Moraga, the next 45 hours

Visibility stays 10 miles or more through Sat 5 PM.

FriSat

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

What is measuring near here

The 6 instruments nearest Moraga, how far away each one is, how high it stands, and what kind of measurement it makes. The nearest is 2.0 miles away.

measured now4 instruments

OaklandOAK

At an airfield/10.5 mi away/7 ft/580 ft below here

temp, wind, gust, visibility, precip, pressure

Rank12of 4,465

measured daily2 instruments

Moraga 2.4 NNWCA-CC-25

In a volunteer observer's own ground/2.0 mi away/748 ft/161 ft above here

precip, snowfall, snow depth

Rank-

Oakland - Upper San LeanfroUSLC1

At a cooperative observer's station/5.5 mi away/316 ft/271 ft below here

snowfall, snow depth, precip, high, low

Rank-

Station report

The weather at Oakland, drawn

The nearest airport reporting now, 10.5 mi from Moraga, California. From its report of Oct 15, 2026, 7:53 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 Oakland, 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 OAKFIG. A THE SKY OVER OAKLANDSECTION, 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 MORE0510TITLEOakland, the skySTATION REPORT · ASOS OAKTYPESECTIONSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 1 of 6DATE2026-10-16IDSR-OAK-1DRAWN AS linework on paperSOURCES FB-SKY-001

The air

68.0 F with a dew point of 57.0 F, 68 per cent relative humidity. Air lifted from the station would cool to its dew point, where cloud forms, about 2,500 ft up.

Chart of the air at Oakland: temperature 68.0 degrees Fahrenheit and dew point 57.0, 68 per cent relative humidity; air lifted from the station cools along the dry rate and meets its dew point about 2,500 feet above the station; height to scale.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT OAKFIG. B THE AIR AT OAKLANDTHE REPORTED TEMPERATURE AND DEW POINT, AND AIR LIFTED FROM THE STATION WITHOUT MIXING UNTIL IT SATURATES; HEIGHT ABOVE THE STATION TO SCALEFT ABOVE THE STATION01,0002,0003,0004,00040 F50 F60 F70 F80 FSATURATES 2,500 FT ABOVE THE STATION, AT 54.5 FTEMPERATURE 68.0 FDEW POINT 57.0 FSPREAD 11.0 FRELATIVE HUMIDITY 68 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 POINTTITLEOakland, the airSTATION REPORT · ASOS OAKTYPECHARTSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 2 of 6DATE2026-10-16IDSR-OAK-2DRAWN AS linework on paperSOURCES FB-WAT-002, FB-ENG-011, FB-ENG-005

The wind

From the west northwest (290 degrees) at 7 mph: force 2, a light breeze on the Beaufort scale.

Plan of the wind at Oakland, north up: blowing from 290 degrees, the west northwest, 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 OAKFIG. C THE WIND AT OAKLANDPLAN, NORTH UP: THE WIND AS REPORTED, AND WHERE IT SITS ON THE BEAUFORT SCALENESWTHE STATIONFROM 290°BEAUFORT FORCELEAST WIND, MPH0CALM01LIGHT AIR12LIGHT BREEZE4NOW, 7 MPH3GENTLE BREEZE84MODERATE BREEZE135FRESH BREEZE196STRONG BREEZE257NEAR GALE328GALE399STRONG GALE4710STORM5511VIOLENT STORM6412HURRICANE FORCE73TITLEOakland, the windSTATION REPORT · ASOS OAKTYPEPLAN north upSCALENOT TO SCALEREVAS REPORTED SHEET 3 of 6DATE2026-10-16IDSR-OAK-3DRAWN AS linework on paperSOURCES FB-EVT-150, FB-ENG-008, FB-INS-002

The full report of Oakland, 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 Moraga

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

Near Moraga

River and lake gauges