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Brisbane, California

City in San Mateo County, California

Air quality

The air at Brisbane

Index 51, moderate, led by fine particles. Read at 12 AM from its reporting area, San Francisco (CA), 5 miles off.

51Moderate
  • Fine particles (PM2.5)51Moderate-
  • Ozone9Good-

The days ahead

Highest moderate, Sat Oct 17, led by fine particles. Yesterday measured 43, good.

Smoke, the next 41 hours

Little smoke near the ground through Sat 5 PM: the index from smoke stays at 11 or under.

FriSat

Precipitation

What has fallen at Brisbane

None in the last 3 days, to Thu 11 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 Brisbane, the next 41 hours

Visibility stays 10 miles or more through Sat 5 PM.

FriSat

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

What is measuring near here

The 5 instruments nearest Brisbane, how far away each one is, how high it stands, and what kind of measurement it makes. The nearest is 2.2 miles away.

measured now3 instruments

measured daily2 instruments

South San Francisco 6.1 WCA-SM-50

In a volunteer observer's own ground/2.2 mi away/38 ft/9 ft below here

precip, snowfall, snow depth

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Station report

The weather at Citizen station CW5988, drawn

The nearest instrument reporting now, 5.6 mi from Brisbane, California. From its report of undefined: 3 of its 4 sheets.

The wind

From the southwest (231 degrees) at 2 mph, gusting 3 mph: force 1, a light air on the Beaufort scale.

Plan of the wind at Citizen station CW5988, north up: blowing from 231 degrees, the southwest, at 2 miles an hour, gusting 3; beside it the Beaufort scale from calm to hurricane force, force 1, light air, marked.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT CW5988FIG. C THE WIND AT CITIZEN STATION CW5988PLAN, NORTH UP: THE WIND AS REPORTED, AND WHERE IT SITS ON THE BEAUFORT SCALENESWTHE STATIONFROM 231°BEAUFORT FORCELEAST WIND, MPH0CALM01LIGHT AIR1NOW, 2 MPH2LIGHT BREEZE43GENTLE BREEZE84MODERATE BREEZE135FRESH BREEZE196STRONG BREEZE257NEAR GALE328GALE399STRONG GALE4710STORM5511VIOLENT STORM6412HURRICANE FORCE73TITLECitizen station CW5988, the windSTATION REPORT · CWOP CW5988TYPEPLAN north upSCALENOT TO SCALEREVAS REPORTED SHEET 1 of 4DATE2026-10-16IDSR-CW5988-1DRAWN AS linework on paperSOURCES FB-EVT-150, FB-ENG-008

The column

At 185 ft above sea level, 1 per cent of the atmosphere's air lies below the station. The standard atmosphere puts the pressure there at 29.72 inHg and the temperature at 58.3 F; the station's altimeter setting of 30.07 inHg means its barometer reads 29.87 inHg; it reports 67.0 F, 8.7 F warmer than standard.

Section from sea level of where Citizen station CW5988 stands in the atmosphere, height to scale: the station 185 feet above sea level with 1 per cent of the air below it; the standard atmosphere's pressure there, 29.72 inches of mercury, and temperature, 58.3 degrees Fahrenheit; the altimeter setting of 30.07 and the station pressure it means, 29.87.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT CW5988FIG. D WHERE CITIZEN STATION CW5988 STANDS IN THE ATMOSPHERESECTION FROM SEA LEVEL, HEIGHT TO SCALE, THE STATION IN THE STANDARD ATMOSPHEREFT ABOVE SEA LEVEL05,00010,00015,000SEA LEVEL, 29.92 inHg IN THE STANDARD ATMOSPHERECITIZEN STATION CW59881 PER CENT OF THE AIR BELOW IT185 FT10 PER CENT OF THE AIR BELOW, 2,890 FT20 PER CENT OF THE AIR BELOW, 6,050 FT30 PER CENT OF THE AIR BELOW, 9,540 FT40 PER CENT OF THE AIR BELOW, 13,470 FTSTANDARD PRESSURE HERE29.72 inHgSTANDARD TEMPERATURE HERE58.3 FALTIMETER SETTING, REPORTED30.07 inHgITS BAROMETER READS29.87 inHgTEMPERATURE, REPORTED67.0 FTITLECitizen station CW5988, the columnSTATION REPORT · CWOP CW5988TYPESECTIONSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 2 of 4DATE2026-10-16IDSR-CW5988-2DRAWN AS linework on paperSOURCES FB-ENG-001, FB-ENG-003

The sun

On Oct 16 the noon sun stands 43 degrees above the horizon at 37.76 N, and the day is 11 h 03 min long. Level ground there takes 68 per cent of the noon sunlight a surface facing the sun would.

Elevation of the noon sun at Citizen station CW5988, angles true: on Oct 16 it stands 43 degrees above the horizon, against 76 at the June solstice, 52 at the equinoxes and 29 at the December solstice; the day is 11 h 03 min long.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT CW5988FIG. E THE SUN AT CITIZEN STATION CW5988ELEVATION LOOKING WEST, SOUTH TO THE LEFT: THE NOON SUN ON THE DAY OF THE REPORT, AND AT THE SOLSTICES AND EQUINOXES; ANGLES TRUETHE STATIONJUNE SOLSTICE 76°EQUINOXES 52°DECEMBER SOLSTICE 29°OCT 16, 43°SOUTHANGLES TRUE; THE RAYS ARE OF ONE LENGTH AND DRAW DIRECTION ONLYDAY LENGTH 11 H 03 MINLEVEL GROUND TAKES 68 PER CENT OF THE NOON SUN A FACING SURFACE WOULDLATITUDE 37.76 N; THE SUN'S DECLINATION -9.1°TITLECitizen station CW5988, the sunSTATION REPORT · CWOP CW5988TYPEELEVATIONSCALEANGLES TRUEREVAS REPORTED SHEET 3 of 4DATE2026-10-16IDSR-CW5988-3DRAWN AS linework on paperSOURCES FB-ENG-007

The full report of Citizen station CW5988, in 4 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 Brisbane

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

Near Brisbane

River and lake gauges