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Fort Irwin, California

Community in San Bernardino County, California

Air quality

The air at Fort Irwin

Index 35, good, led by ozone. Read at 9 PM from its reporting area, Barstow (CA), 31 miles off.

35Good
  • Ozone35Good-
  • Coarse particles (PM10)11Good-

The days ahead

Good each day through Fri Oct 16, led by nitrogen dioxide. Yesterday measured 38, good.

Smoke, the next 45 hours

Smoke near the ground peaks at index 55, moderate, Sat 12 AM.

FriSat

Precipitation

What has fallen at Fort Irwin

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
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Visibility

How far you can see at Fort Irwin, the next 45 hours

Visibility stays 10 miles or more through Sat 5 PM.

FriSat

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

What is measuring near here

The 5 instruments nearest Fort Irwin, how far away each one is, how high it stands, and what kind of measurement it makes. The nearest is 3.9 miles away.

measured now3 instruments

measured daily2 instruments

Barstow 3.0 ECA-SR-104

In a volunteer observer's own ground/31.9 mi away/2,393 ft/163 ft below here

precip, snowfall, snow depth

Rank-

Station report

The weather at Bicycle Lake, drawn

The nearest airport reporting now, 3.9 mi from Fort Irwin, California. From its report of Oct 15, 2026, 8:55 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 Bicycle Lake, 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 BYSFIG. A THE SKY OVER BICYCLE LAKESECTION, 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 MORE0510TITLEBicycle Lake, the skySTATION REPORT · ASOS BYSTYPESECTIONSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 1 of 6DATE2026-10-16IDSR-BYS-1DRAWN AS linework on paperSOURCES FB-SKY-001

The air

71.0 F with a dew point of 37.2 F, 29 per cent relative humidity. Air lifted from the station would cool to its dew point, where cloud forms, about 7,600 ft up.

Chart of the air at Bicycle Lake: temperature 71.0 degrees Fahrenheit and dew point 37.2, 29 per cent relative humidity; air lifted from the station cools along the dry rate and meets its dew point about 7,600 feet above the station; height to scale.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT BYSFIG. B THE AIR AT BICYCLE LAKETHE REPORTED TEMPERATURE AND DEW POINT, AND AIR LIFTED FROM THE STATION WITHOUT MIXING UNTIL IT SATURATES; HEIGHT ABOVE THE STATION TO SCALEFT ABOVE THE STATION02,0004,0006,0008,00010,00020 F30 F40 F50 F60 F70 F80 FSATURATES 7,600 FT ABOVE THE STATION, AT 30.2 FTEMPERATURE 71.0 FDEW POINT 37.2 FSPREAD 33.8 FRELATIVE HUMIDITY 29 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 POINTTITLEBicycle Lake, the airSTATION REPORT · ASOS BYSTYPECHARTSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 2 of 6DATE2026-10-16IDSR-BYS-2DRAWN AS linework on paperSOURCES FB-WAT-002, FB-ENG-011, FB-ENG-005

The wind

From the north northeast (30 degrees) at 13 mph: force 4, a moderate breeze on the Beaufort scale. The strongest gust today was 33 mph.

Plan of the wind at Bicycle Lake, north up: blowing from 30 degrees, the north northeast, at 13 miles an hour; beside it the Beaufort scale from calm to hurricane force, force 4, moderate breeze, marked.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT BYSFIG. C THE WIND AT BICYCLE LAKEPLAN, NORTH UP: THE WIND AS REPORTED, AND WHERE IT SITS ON THE BEAUFORT SCALENESWTHE STATIONFROM 30°BEAUFORT FORCELEAST WIND, MPH0CALM01LIGHT AIR12LIGHT BREEZE43GENTLE BREEZE84MODERATE BREEZE13NOW, 13 MPH5FRESH BREEZE196STRONG BREEZE257NEAR GALE328GALE399STRONG GALE4710STORM5511VIOLENT STORM6412HURRICANE FORCE73TITLEBicycle Lake, the windSTATION REPORT · ASOS BYSTYPEPLAN north upSCALENOT TO SCALEREVAS REPORTED SHEET 3 of 6DATE2026-10-16IDSR-BYS-3DRAWN AS linework on paperSOURCES FB-EVT-150, FB-ENG-008, FB-INS-002

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

0in

Snow on the ground

Measured at Barstow Fire Station (BARC1), 31.8 miles from here, read 14 Oct, 10:00. measured daily

Elsewhere in California

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

Near Fort Irwin

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

Near Fort Irwin

River and lake gauges