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Frederick, Colorado

Town in Weld County, Colorado

Air quality

The air at Frederick

Index 39, good, led by fine particles. Read at 2 AM from its reporting area, Denver-Boulder (CO), 15 miles off.

39Good
  • Fine particles (PM2.5)39Good8.8 mi
  • Ozone29Good23 ppb14.5 mi
  • Coarse particles (PM10)10Good18 mi
  • Nitrogen dioxide1Good1.5 ppb18.7 mi
  • Sulfur dioxide0Good0 ppb18.7 mi
  • Carbon monoxide-0.1 ppm22.1 mi

The days ahead

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

Smoke, the next 40 hours

No smoke near the ground through Sat 6 PM.

FriSat

Precipitation

What has fallen at Frederick

0.09 in in the last 24 hours, 0.71 in over the last 3 days, to Fri 2 AM. Measured by radar and rain gauges, as water.

Last 24 hours
0.09in
Last 3 days
0.71in

Visibility

How far you can see at Frederick, the next 40 hours

Visibility stays 10 miles or more through Sat 6 PM.

FriSat

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

What is measuring near here

The 7 instruments nearest Frederick, how far away each one is, how high it stands, and what kind of measurement it makes. The nearest is 0.9 miles away.

measured now5 instruments

ErieEIK

At an airfield/8.6 mi away/5,130 ft/141 ft above here

temp, wind, gust, visibility, precip, pressure

Rank1,669of 2,650

measured daily2 instruments

Frederick 0.4 SECO-WE-354

In a volunteer observer's own ground/0.9 mi away/4,982 ft/7 ft below here

precip, snowfall, snow depth

Rank-

FirestoneFSNC2

At a cooperative observer's station/3.4 mi away/4,871 ft/118 ft below here

snowfall, snow depth, precip, high, low

Rank2,106of 2,650

Station report

The weather at Erie, drawn

The nearest airport reporting now, 8.6 mi from Frederick, Colorado. From its report of Oct 16, 2026, 2:55 AM local time: 3 of its 6 sheets.

The sky

Overcast at 3,800 ft; the ceiling is 3,800 ft; visibility 10 mi or more.

Section of the sky over Erie, height above the station to scale: overcast cloud with its base at 3,800 feet, the ceiling at 3,800 feet, and visibility of 10 mi or more.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT EIKFIG. A THE SKY OVER ERIESECTION, 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 STATION01,0002,0003,0004,0005,0006,000ETAGESLOWTHE STATIONTHE CEILOMETER READS TO 12,000 FT, ABOVE THIS SHEETOVC 3,800 FTOVERCAST, 8 EIGHTHS OF THE SKYCEILING 3,800 FTVISIBILITY, MILES: 10 MI OR MORE0510TITLEErie, the skySTATION REPORT · ASOS EIKTYPESECTIONSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 1 of 6DATE2026-10-16IDSR-EIK-1DRAWN AS linework on paperSOURCES FB-SKY-001, FB-SKY-017, FB-SKY-016, FB-SKY-018

The air

35.4 F with a dew point of 29.3 F, 78 per cent relative humidity. Air lifted from the station would cool to its dew point, where cloud forms, about 1,400 ft up; the lowest cloud reported is at 3,800 ft.

Chart of the air at Erie: temperature 35.4 degrees Fahrenheit and dew point 29.3, 78 per cent relative humidity; air lifted from the station cools along the dry rate and meets its dew point about 1,400 feet above the station, against the lowest cloud reported at 3,800 feet; height to scale.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT EIKFIG. B THE AIR AT ERIETHE REPORTED TEMPERATURE AND DEW POINT, AND AIR LIFTED FROM THE STATION WITHOUT MIXING UNTIL IT SATURATES; HEIGHT ABOVE THE STATION TO SCALEFT ABOVE THE STATION01,0002,0003,0004,0005,00020 F30 F40 F50 FSATURATES 1,400 FT ABOVE THE STATION, AT 28.0 FLOWEST CLOUD REPORTED, OVC 3,800 FTTEMPERATURE 35.4 FDEW POINT 29.3 FSPREAD 6.1 FRELATIVE HUMIDITY 78 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 POINTTITLEErie, the airSTATION REPORT · ASOS EIKTYPECHARTSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 2 of 6DATE2026-10-16IDSR-EIK-2DRAWN AS linework on paperSOURCES FB-WAT-002, FB-ENG-011, FB-ENG-005

The wind

Calm.

Plan of the wind at Erie, north up: calm; beside it the Beaufort scale from calm to hurricane force, force 0, calm, marked.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT EIKFIG. C THE WIND AT ERIEPLAN, NORTH UP: THE WIND AS REPORTED, AND WHERE IT SITS ON THE BEAUFORT SCALENESWTHE STATIONCALMBEAUFORT FORCELEAST WIND, MPH0CALM0NOW, 0 MPH1LIGHT AIR12LIGHT BREEZE43GENTLE BREEZE84MODERATE BREEZE135FRESH BREEZE196STRONG BREEZE257NEAR GALE328GALE399STRONG GALE4710STORM5511VIOLENT STORM6412HURRICANE FORCE73TITLEErie, the windSTATION REPORT · ASOS EIKTYPEPLAN north upSCALENOT TO SCALEREVAS REPORTED SHEET 3 of 6DATE2026-10-16IDSR-EIK-3DRAWN AS linework on paperSOURCES FB-EVT-150, FB-ENG-008, FB-INS-002

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

0in

Snow on the ground

Measured at Firestone (FSNC2), 3.4 miles from here, read 12 Oct, 07:00. measured daily

Elsewhere in Colorado

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

Near Frederick

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

Near Frederick

River and lake gauges