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Sidney, Montana

City in Richland County, Montana

Air quality

The air at Sidney

Index 25, good, led by ozone. Read at 12 AM from its reporting area, Theodore Roosevelt National Park (ND), 61 miles off.

25Good
  • Fine particles (PM2.5)3Good-
  • Ozone25Good-

The days ahead

Yesterday measured 19, good.

Smoke, the next 43 hours

No smoke near the ground through Sat 6 PM.

FriSat

Precipitation

What has fallen at Sidney

None in the last 3 days, to Thu 11 PM. Measured by radar and rain gauges, as water.

Last 24 hours
0.00in
Last 3 days
0.00in

Visibility

How far you can see at Sidney, the next 43 hours

Visibility stays 7 miles or more through Sat 6 PM, lowest 8 miles Fri 7 AM.

FriSat

On the radar over Sidney, MontanaReflectivityStorm topsRain rateRain, last 24 hoursForecast temperatureForecast rain totalEvery picture

What is measuring near here

The 6 instruments nearest Sidney, how far away each one is, how high it stands, and what kind of measurement it makes. The nearest is 1.2 miles away.

measured now4 instruments

SidneyS2120

At a soil climate station/5.5 mi away/2,274 ft/326 ft above here

temp, humidity, soil temp, soil moisture

Rank723of 1,053

Sidney ScanSISM8

At a river or reservoir gauge/5.6 mi away/2,274 ft/326 ft above here

temp, wind, gust, humidity, pressure

Rank670of 1,053

measured daily2 instruments

Sidney 1.3 NEMT-RC-5

In a volunteer observer's own ground/1.2 mi away/1,935 ft/13 ft below here

precip, snowfall, snow depth

Rank-

SidneySDYM8

At a cooperative observer's station/1.3 mi away/1,929 ft/19 ft below here

snowfall, snow depth, precip, high, low

Rank1,042of 1,053

Station report

The weather at Sidney-Richland, drawn

The nearest airport reporting now, 1.4 mi from Sidney, Montana. From its report of Oct 15, 2026, 11:56 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 Sidney-Richland, 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 SDYFIG. A THE SKY OVER SIDNEY-RICHLANDSECTION, 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 MORE0510TITLESidney-Richland, the skySTATION REPORT · ASOS SDYTYPESECTIONSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 1 of 6DATE2026-10-16IDSR-SDY-1DRAWN AS linework on paperSOURCES FB-SKY-001

The air

32.0 F with a dew point of 30.0 F, 92 per cent relative humidity. Air lifted from the station would cool to its dew point, where cloud forms, about 500 ft up.

Chart of the air at Sidney-Richland: temperature 32.0 degrees Fahrenheit and dew point 30.0, 92 per cent relative humidity; air lifted from the station cools along the dry rate and meets its dew point about 500 feet above the station; height to scale.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT SDYFIG. B THE AIR AT SIDNEY-RICHLANDTHE 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 500 FT ABOVE THE STATION, AT 29.5 FTEMPERATURE AND DEW POINT 32.0 F, 30.0 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 POINTTITLESidney-Richland, the airSTATION REPORT · ASOS SDYTYPECHARTSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 2 of 6DATE2026-10-16IDSR-SDY-2DRAWN AS linework on paperSOURCES FB-WAT-020, FB-WAT-002, FB-ENG-011, FB-ENG-005

The wind

From the northwest (310 degrees) at 9 mph: force 3, a gentle breeze on the Beaufort scale. The strongest gust today was 45 mph.

Plan of the wind at Sidney-Richland, north up: blowing from 310 degrees, the northwest, at 9 miles an hour; beside it the Beaufort scale from calm to hurricane force, force 3, gentle breeze, marked.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT SDYFIG. C THE WIND AT SIDNEY-RICHLANDPLAN, NORTH UP: THE WIND AS REPORTED, AND WHERE IT SITS ON THE BEAUFORT SCALENESWTHE STATIONFROM 310°BEAUFORT FORCELEAST WIND, MPH0CALM01LIGHT AIR12LIGHT BREEZE43GENTLE BREEZE8NOW, 9 MPH4MODERATE BREEZE135FRESH BREEZE196STRONG BREEZE257NEAR GALE328GALE399STRONG GALE4710STORM5511VIOLENT STORM6412HURRICANE FORCE73TITLESidney-Richland, the windSTATION REPORT · ASOS SDYTYPEPLAN north upSCALENOT TO SCALEREVAS REPORTED SHEET 3 of 6DATE2026-10-16IDSR-SDY-3DRAWN AS linework on paperSOURCES FB-EVT-150, FB-ENG-008, FB-INS-002

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

0in

Snow on the ground

Measured at Sidney (SDYM8), 1.3 miles from here, read 13 Oct, 16:00. measured daily

Elsewhere in Montana

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

Near Sidney

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

Near Sidney

River and lake gauges