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St. Ann Highlands, Colorado

Community in Boulder County, Colorado

Air quality

The air at St. Ann Highlands

Index 32, good, led by ozone. Read at 4 AM from its reporting area, Denver-Boulder (CO), 23 miles off.

32Good
  • Fine particles (PM2.5)20Good10.4 mi
  • Ozone32Good25 ppb13.8 mi
  • Coarse particles (PM10)11Good10.4 mi

The days ahead

Good each day through Today, led by fine particles. Yesterday measured 36, good.

Smoke, the next 44 hours

No smoke near the ground through Sun 12 AM.

FriSat

Precipitation

What has fallen at St. Ann Highlands

None in the last 24 hours; 0.63 in over the last 3 days, to Fri 3 AM. Measured by radar and rain gauges, as water.

Last 24 hours
0.00in
Last 3 days
0.63in

Visibility

How far you can see at St. Ann Highlands, the next 44 hours

Visibility stays 10 miles or more through Sun 12 AM.

FriSat

On the radar over St. Ann Highlands, ColoradoReflectivityStorm topsRain rateRain, last 24 hoursForecast temperatureForecast rain totalEvery picture

What is measuring near here

The 7 instruments nearest St. Ann Highlands, how far away each one is, how high it stands, and what kind of measurement it makes. The nearest is 0.6 miles away.

measured now5 instruments

measured daily2 instruments

Co Boulder 14 WWRBC2

At a cooperative observer's station/5.6 mi away/9,839 ft/1,583 ft above here

snowfall, snow depth, precip, high, low

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Station report

The weather at Dakota Hills, drawn

The nearest airport reporting now, 9.7 mi from St. Ann Highlands, Colorado. From its report of Oct 16, 2026, 2:30 AM local time: 3 of its 6 sheets.

The sky

No cloud reported; visibility 10 mi or more.

Section of the sky over Dakota Hills, height above the station to scale: no cloud reported, and visibility of 10 mi or more.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT C99FIG. A THE SKY OVER DAKOTA HILLSSECTION, 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 REPORTEDVISIBILITY, MILES: 10 MI OR MORE0510TITLEDakota Hills, the skySTATION REPORT · ASOS C99TYPESECTIONSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 1 of 6DATE2026-10-16IDSR-C99-1DRAWN AS linework on paperSOURCES FB-SKY-001

The air

24.0 F with a dew point of 12.0 F, 60 per cent relative humidity. Air lifted from the station would cool to its dew point, where cloud forms, about 2,700 ft up.

Chart of the air at Dakota Hills: temperature 24.0 degrees Fahrenheit and dew point 12.0, 60 per cent relative humidity; air lifted from the station cools along the dry rate and meets its dew point about 2,700 feet above the station; height to scale.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT C99FIG. B THE AIR AT DAKOTA HILLSTHE REPORTED TEMPERATURE AND DEW POINT, AND AIR LIFTED FROM THE STATION WITHOUT MIXING UNTIL IT SATURATES; HEIGHT ABOVE THE STATION TO SCALEFT ABOVE THE STATION01,0002,0003,0004,0000 F10 F20 F30 FSATURATES 2,700 FT ABOVE THE STATION, AT 9.6 FTEMPERATURE 24.0 FDEW POINT 12.0 FSPREAD 12.0 FRELATIVE HUMIDITY 60 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 POINTTITLEDakota Hills, the airSTATION REPORT · ASOS C99TYPECHARTSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 2 of 6DATE2026-10-16IDSR-C99-2DRAWN AS linework on paperSOURCES FB-WAT-002, FB-ENG-011, FB-ENG-005

The wind

From the northwest (310 degrees) at 10 mph, gusting 20 mph: force 3, a gentle breeze on the Beaufort scale. The strongest gust today was 20 mph.

Plan of the wind at Dakota Hills, north up: blowing from 310 degrees, the northwest, at 10 miles an hour, gusting 20; beside it the Beaufort scale from calm to hurricane force, force 3, gentle breeze, marked.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT C99FIG. C THE WIND AT DAKOTA HILLSPLAN, NORTH UP: THE WIND AS REPORTED, AND WHERE IT SITS ON THE BEAUFORT SCALENESWTHE STATIONFROM 310°BEAUFORT FORCELEAST WIND, MPH0CALM01LIGHT AIR12LIGHT BREEZE43GENTLE BREEZE8NOW, 10 MPH4MODERATE BREEZE135FRESH BREEZE19GUST, 20 MPH6STRONG BREEZE257NEAR GALE328GALE399STRONG GALE4710STORM5511VIOLENT STORM6412HURRICANE FORCE73TITLEDakota Hills, the windSTATION REPORT · ASOS C99TYPEPLAN north upSCALENOT TO SCALEREVAS REPORTED SHEET 3 of 6DATE2026-10-16IDSR-C99-3DRAWN AS linework on paperSOURCES FB-EVT-150, FB-ENG-008, FB-INS-002

The full report of Dakota Hills, 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 St. Ann Highlands

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

Near St. Ann Highlands

River and lake gauges