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Fraser, Colorado

Town in Grand County, Colorado

Air quality

The air at Fraser

Index 31, good, led by ozone. Read at 3 AM from its reporting area, Denver-Boulder (CO), 41 miles off.

31Good
  • Fine particles (PM2.5)25Good-
  • Ozone31Good-
  • Coarse particles (PM10)9Good-

The days ahead

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

Smoke, the next 46 hours

No smoke near the ground through Sun 12 AM.

FriSat

Precipitation

What has fallen at Fraser

0.01 in in the last 24 hours, 0.25 in over the last 3 days, to Fri 2 AM. Measured by radar and rain gauges, as water.

Last 24 hours
0.01in
Last 3 days
0.25in

Visibility

How far you can see at Fraser, the next 46 hours

Visibility stays 10 miles or more through Sun 12 AM.

FriSat

What is measuring near here

The 7 instruments nearest Fraser, how far away each one is, how high it stands, and what kind of measurement it makes. The nearest is 0.4 miles away.

measured now5 instruments

FraserWDCC2

At a river or reservoir gauge/1.5 mi away/8,960 ft/407 ft above here

temp, wind, gust, humidity, pressure

Rank2,626of 2,650

Berthoud Pass0CO

At an airfield/11.0 mi away/12,441 ft/3,888 ft above here

temp, wind, gust, visibility, precip, pressure

Rank3of 2,650

measured daily2 instruments

Fraser 0.5 ECO-GR-34

In a volunteer observer's own ground/0.4 mi away/8,717 ft/164 ft above here

precip, snowfall, snow depth

Rank-

FraserFRZC2

At a cooperative observer's station/0.4 mi away/8,593 ft/40 ft above here

snowfall, snow depth, precip, high, low

Rank196of 2,650

Station report

The weather at Berthoud Pass, drawn

The nearest airport reporting now, 11.0 mi from Fraser, Colorado. From its report of Oct 16, 2026, 3:15 AM 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 Berthoud Pass, 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 0COFIG. A THE SKY OVER BERTHOUD PASSSECTION, 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 MORE0510TITLEBerthoud Pass, the skySTATION REPORT · ASOS 0COTYPESECTIONSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 1 of 6DATE2026-10-16IDSR-0CO-1DRAWN AS linework on paperSOURCES FB-SKY-001

The air

14.0 F with a dew point of 12.2 F, 92 per cent relative humidity. Air lifted from the station would cool to its dew point, where cloud forms, about 400 ft up.

Chart of the air at Berthoud Pass: temperature 14.0 degrees Fahrenheit and dew point 12.2, 92 per cent relative humidity; air lifted from the station cools along the dry rate and meets its dew point about 400 feet above the station; height to scale.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT 0COFIG. B THE AIR AT BERTHOUD PASSTHE REPORTED TEMPERATURE AND DEW POINT, AND AIR LIFTED FROM THE STATION WITHOUT MIXING UNTIL IT SATURATES; HEIGHT ABOVE THE STATION TO SCALEFT ABOVE THE STATION01,0002,0003,0000 F10 F20 FSATURATES 400 FT ABOVE THE STATION, AT 11.8 FTEMPERATURE AND DEW POINT 14.0 F, 12.2 FRELATIVE HUMIDITY 92 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 POINTTITLEBerthoud Pass, the airSTATION REPORT · ASOS 0COTYPECHARTSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 2 of 6DATE2026-10-16IDSR-0CO-2DRAWN AS linework on paperSOURCES FB-WAT-020, FB-WAT-002, FB-ENG-011, FB-ENG-005

The wind

From the south (180 degrees) at 7 mph: force 2, a light breeze on the Beaufort scale. The strongest gust today was 38 mph.

Plan of the wind at Berthoud Pass, north up: blowing from 180 degrees, the south, at 7 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 0COFIG. C THE WIND AT BERTHOUD PASSPLAN, NORTH UP: THE WIND AS REPORTED, AND WHERE IT SITS ON THE BEAUFORT SCALENESWTHE STATIONFROM 180°BEAUFORT FORCELEAST WIND, MPH0CALM01LIGHT AIR12LIGHT BREEZE4NOW, 7 MPH3GENTLE BREEZE84MODERATE BREEZE135FRESH BREEZE196STRONG BREEZE257NEAR GALE328GALE399STRONG GALE4710STORM5511VIOLENT STORM6412HURRICANE FORCE73TITLEBerthoud Pass, the windSTATION REPORT · ASOS 0COTYPEPLAN north upSCALENOT TO SCALEREVAS REPORTED SHEET 3 of 6DATE2026-10-16IDSR-0CO-3DRAWN AS linework on paperSOURCES FB-EVT-150, FB-ENG-008, FB-INS-002

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

0in

Snow on the ground

Measured at Fraser (FRZC2), 0.4 miles from here, read 15 Oct, 16:00. measured daily

Elsewhere in Colorado

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

Near Fraser

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

Near Fraser