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San Luis, Colorado

Town in Costilla County, Colorado

Air quality

The air at San Luis

Index 0, good, led by fine particles. Read at 10 PM from its reporting area, Taos (NM), 57 miles off.

0Good
  • Fine particles (PM2.5)0Good-

The days ahead

Yesterday measured 10, good.

Smoke, the next 44 hours

No smoke near the ground through Sat 6 PM.

FriSat

Precipitation

What has fallen at San Luis

None in the last 24 hours; 0.05 in over the last 3 days, to Thu 10 PM. Measured by radar and rain gauges, as water.

Last 24 hours
0.00in
Last 3 days
0.05in

Visibility

How far you can see at San Luis, the next 44 hours

Visibility stays 10 miles or more through Sat 6 PM.

FriSat

On the radar over San Luis, ColoradoReflectivityStorm topsRain rateRain, last 24 hoursForecast temperatureForecast rain totalEvery picture

What is measuring near here

The 5 instruments nearest San Luis, how far away each one is, how high it stands, and what kind of measurement it makes. The nearest is 6.5 miles away.

measured now3 instruments

measured daily2 instruments

San Acacio 3.1 SECO-CS-34

In a volunteer observer's own ground/6.5 mi away/7,821 ft/174 ft below here

precip, snowfall, snow depth

Rank-

Aguilar 18WSWAGRC2

At a cooperative observer's station/27.0 mi away/8,684 ft/689 ft above here

snowfall, snow depth, precip, high, low

Rank-

Station report

The weather at Alamosa Muni(AWOS), drawn

The nearest airport reporting now, 29.1 mi from San Luis, Colorado. From its report of Oct 15, 2026, 10:52 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 Alamosa Muni(AWOS), 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 ALSFIG. A THE SKY OVER ALAMOSA MUNI(AWOS)SECTION, 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 MORE0510TITLEAlamosa Muni(AWOS), the skySTATION REPORT · ASOS ALSTYPESECTIONSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 1 of 6DATE2026-10-16IDSR-ALS-1DRAWN AS linework on paperSOURCES FB-SKY-001

The air

32.0 F with a dew point of 28.0 F, 85 per cent relative humidity. Air lifted from the station would cool to its dew point, where cloud forms, about 900 ft up.

Chart of the air at Alamosa Muni(AWOS): temperature 32.0 degrees Fahrenheit and dew point 28.0, 85 per cent relative humidity; air lifted from the station cools along the dry rate and meets its dew point about 900 feet above the station; height to scale.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT ALSFIG. B THE AIR AT ALAMOSA MUNI(AWOS)THE REPORTED TEMPERATURE AND DEW POINT, AND AIR LIFTED FROM THE STATION WITHOUT MIXING UNTIL IT SATURATES; HEIGHT ABOVE THE STATION TO SCALEFT ABOVE THE STATION01,0002,0003,00020 F30 F40 FSATURATES 900 FT ABOVE THE STATION, AT 27.1 FTEMPERATURE 32.0 FDEW POINT 28.0 FSPREAD 4.0 FRELATIVE HUMIDITY 85 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 POINTTITLEAlamosa Muni(AWOS), the airSTATION REPORT · ASOS ALSTYPECHARTSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 2 of 6DATE2026-10-16IDSR-ALS-2DRAWN AS linework on paperSOURCES FB-WAT-020, FB-WAT-002, FB-ENG-011, FB-ENG-005

The wind

From the southwest (230 degrees) at 5 mph: force 2, a light breeze on the Beaufort scale. The strongest gust today was 30 mph.

Plan of the wind at Alamosa Muni(AWOS), north up: blowing from 230 degrees, the southwest, at 5 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 ALSFIG. C THE WIND AT ALAMOSA MUNI(AWOS)PLAN, NORTH UP: THE WIND AS REPORTED, AND WHERE IT SITS ON THE BEAUFORT SCALENESWTHE STATIONFROM 230°BEAUFORT FORCELEAST WIND, MPH0CALM01LIGHT AIR12LIGHT BREEZE4NOW, 5 MPH3GENTLE BREEZE84MODERATE BREEZE135FRESH BREEZE196STRONG BREEZE257NEAR GALE328GALE399STRONG GALE4710STORM5511VIOLENT STORM6412HURRICANE FORCE73TITLEAlamosa Muni(AWOS), the windSTATION REPORT · ASOS ALSTYPEPLAN north upSCALENOT TO SCALEREVAS REPORTED SHEET 3 of 6DATE2026-10-16IDSR-ALS-3DRAWN AS linework on paperSOURCES FB-EVT-150, FB-ENG-008, FB-INS-002

The full report of Alamosa Muni(AWOS), in 6 sheets, each beside the Field Book plates that explain it

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Snow on the ground

Elsewhere in Colorado

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

Near San Luis

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

Near San Luis

River and lake gauges