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Rainbow, California

Community in San Diego County, California

Air quality

The air at Rainbow

Index 35, good, led by ozone. Read at 10 PM from its reporting area, Temecula Vly (CA), 5 miles off.

35Good
  • Fine particles (PM2.5)24Good12.6 mi
  • Ozone35Good35 ppb12.6 mi
  • Coarse particles (PM10)10Good12.6 mi
  • Nitrogen dioxide4Good4.6 ppb21.4 mi

The days ahead

Good each day through Fri Oct 16, led by ozone. Yesterday measured 46, good.

Smoke, the next 43 hours

Smoke near the ground peaks at index 64, moderate, Sat 5 PM.

FriSat

Precipitation

What has fallen at Rainbow

None in the last 3 days, to Thu 10 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 Rainbow, the next 43 hours

Visibility stays 10 miles or more through Sat 5 PM.

FriSat

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

What is measuring near here

The 6 instruments nearest Rainbow, how far away each one is, how high it stands, and what kind of measurement it makes. The nearest is 2.9 miles away.

measured now4 instruments

Citizen station KG6HSQ-3KG6HSQ-3

In a volunteer observer's own ground/5.7 mi away/798 ft/289 ft below here

temp, humidity, wind, precip, pressure

Rank-

measured daily2 instruments

Vista 2 NNEVSTC1

At a cooperative observer's station/13.5 mi away/531 ft/556 ft below here

snowfall, snow depth, precip, high, low

Rank-

Station report

The weather at Fallbrook, drawn

The nearest airport reporting now, 7.3 mi from Rainbow, California. From its report of Oct 15, 2026, 9:55 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 Fallbrook, 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 L18FIG. A THE SKY OVER FALLBROOKSECTION, 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 MORE0510TITLEFallbrook, the skySTATION REPORT · ASOS L18TYPESECTIONSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 1 of 6DATE2026-10-16IDSR-L18-1DRAWN AS linework on paperSOURCES FB-SKY-001

The air

78.8 F with a dew point of 37.4 F, 23 per cent relative humidity. Air lifted from the station would cool to its dew point, where cloud forms, about 9,300 ft up.

Chart of the air at Fallbrook: temperature 78.8 degrees Fahrenheit and dew point 37.4, 23 per cent relative humidity; air lifted from the station cools along the dry rate and meets its dew point about 9,300 feet above the station; height to scale.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT L18FIG. B THE AIR AT FALLBROOKTHE REPORTED TEMPERATURE AND DEW POINT, AND AIR LIFTED FROM THE STATION WITHOUT MIXING UNTIL IT SATURATES; HEIGHT ABOVE THE STATION TO SCALEFT ABOVE THE STATION02,0004,0006,0008,00010,00012,00020 F40 F60 F80 FSATURATES 9,300 FT ABOVE THE STATION, AT 28.9 FTEMPERATURE 78.8 FDEW POINT 37.4 FSPREAD 41.4 FRELATIVE HUMIDITY 23 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 POINTTITLEFallbrook, the airSTATION REPORT · ASOS L18TYPECHARTSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 2 of 6DATE2026-10-16IDSR-L18-2DRAWN AS linework on paperSOURCES FB-WAT-002, FB-ENG-011, FB-ENG-005

The wind

From the east northeast (70 degrees) at 12 mph, gusting 18 mph: force 3, a gentle breeze on the Beaufort scale. The strongest gust today was 20 mph.

Plan of the wind at Fallbrook, north up: blowing from 70 degrees, the east northeast, at 12 miles an hour, gusting 18; beside it the Beaufort scale from calm to hurricane force, force 3, gentle breeze, marked.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT L18FIG. C THE WIND AT FALLBROOKPLAN, NORTH UP: THE WIND AS REPORTED, AND WHERE IT SITS ON THE BEAUFORT SCALENESWTHE STATIONFROM 70°BEAUFORT FORCELEAST WIND, MPH0CALM01LIGHT AIR12LIGHT BREEZE43GENTLE BREEZE8NOW, 12 MPH4MODERATE BREEZE13GUST, 18 MPH5FRESH BREEZE196STRONG BREEZE257NEAR GALE328GALE399STRONG GALE4710STORM5511VIOLENT STORM6412HURRICANE FORCE73TITLEFallbrook, the windSTATION REPORT · ASOS L18TYPEPLAN north upSCALENOT TO SCALEREVAS REPORTED SHEET 3 of 6DATE2026-10-16IDSR-L18-3DRAWN AS linework on paperSOURCES FB-EVT-150, FB-ENG-008, FB-INS-002

The full report of Fallbrook, 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 Rainbow

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

Near Rainbow

River and lake gauges