Storm Station
Sign in

Arco, Minnesota

City in Lincoln County, Minnesota

Air quality

The air at Arco

Index 42, good, led by fine particles. Read at 10 PM from its reporting area, Brookings (SD), 31 miles off.

42Good
  • Fine particles (PM2.5)42Good18.3 mi
  • Ozone19Good19 ppb18.3 mi
  • Coarse particles (PM10)29Good18.3 mi

The days ahead

Yesterday measured 21, good.

Smoke, the next 45 hours

No smoke near the ground through Sat 7 PM.

FriSat

Precipitation

What has fallen at Arco

0.24 in in the last 24 hours, 0.26 in over the last 3 days, to Thu 10 PM. Measured by radar and rain gauges, as water.

Last 24 hours
0.24in
Last 3 days
0.26in

Visibility

How far you can see at Arco, the next 45 hours

Visibility stays 7 miles or more through Sat 7 PM, lowest 7 miles Fri 1 AM.

FriSat

On the radar over Arco, MinnesotaReflectivityStorm topsRain rateRain, last 24 hoursForecast temperatureForecast rain totalEvery picture

What is measuring near here

The 5 instruments nearest Arco, how far away each one is, how high it stands, and what kind of measurement it makes. The nearest is 0.1 miles away.

measured now3 instruments

measured daily2 instruments

Arco 0.2 WMN-LN-5

In a volunteer observer's own ground/0.1 mi away/1,677 ft/25 ft below here

precip, snowfall, snow depth

Rank-

MinneotaMNNM5

At a cooperative observer's station/15.3 mi away/1,168 ft/534 ft below here

snowfall, snow depth, precip, high, low

Rank-

Station report

The weather at Marshall/Ryan, drawn

The nearest airport reporting now, 18.6 mi from Arco, Minnesota. From its report of Oct 15, 2026, 9:56 PM local time: 3 of its 6 sheets.

The sky

Broken at 2,700 ft, overcast at 3,400 ft; the ceiling is 2,700 ft; visibility 10 mi or more.

Section of the sky over Marshall/Ryan, height above the station to scale: broken cloud with its base at 2,700 feet, overcast cloud with its base at 3,400 feet, the ceiling at 2,700 feet, and visibility of 10 mi or more.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT MMLFIG. A THE SKY OVER MARSHALL/RYANSECTION, 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 3,400 FTOVERCAST, 8 EIGHTHS OF THE SKYBKN 2,700 FTBROKEN, 5 TO 7 EIGHTHS OF THE SKYCEILING 2,700 FTVISIBILITY, MILES: 10 MI OR MORE0510TITLEMarshall/Ryan, the skySTATION REPORT · ASOS MMLTYPESECTIONSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 1 of 6DATE2026-10-16IDSR-MML-1DRAWN AS linework on paperSOURCES FB-SKY-001, FB-SKY-017, FB-SKY-016, FB-SKY-018

The air

47.0 F with a dew point of 40.0 F, 76 per cent relative humidity. Air lifted from the station would cool to its dew point, where cloud forms, about 1,600 ft up; the lowest cloud reported is at 2,700 ft.

Chart of the air at Marshall/Ryan: temperature 47.0 degrees Fahrenheit and dew point 40.0, 76 per cent relative humidity; air lifted from the station cools along the dry rate and meets its dew point about 1,600 feet above the station, against the lowest cloud reported at 2,700 feet; height to scale.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT MMLFIG. B THE AIR AT MARSHALL/RYANTHE REPORTED TEMPERATURE AND DEW POINT, AND AIR LIFTED FROM THE STATION WITHOUT MIXING UNTIL IT SATURATES; HEIGHT ABOVE THE STATION TO SCALEFT ABOVE THE STATION01,0002,0003,0004,00030 F40 F50 F60 FSATURATES 1,600 FT ABOVE THE STATION, AT 38.5 FLOWEST CLOUD REPORTED, BKN 2,700 FTTEMPERATURE 47.0 FDEW POINT 40.0 FSPREAD 7.0 FRELATIVE HUMIDITY 76 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 POINTTITLEMarshall/Ryan, the airSTATION REPORT · ASOS MMLTYPECHARTSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 2 of 6DATE2026-10-16IDSR-MML-2DRAWN AS linework on paperSOURCES FB-WAT-002, FB-ENG-011, FB-ENG-005

The wind

From the northwest (310 degrees) at 21 mph: force 5, a fresh breeze on the Beaufort scale. The strongest gust today was 39 mph.

Plan of the wind at Marshall/Ryan, north up: blowing from 310 degrees, the northwest, at 21 miles an hour; beside it the Beaufort scale from calm to hurricane force, force 5, fresh breeze, marked.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT MMLFIG. C THE WIND AT MARSHALL/RYANPLAN, NORTH UP: THE WIND AS REPORTED, AND WHERE IT SITS ON THE BEAUFORT SCALENESWTHE STATIONFROM 310°BEAUFORT FORCELEAST WIND, MPH0CALM01LIGHT AIR12LIGHT BREEZE43GENTLE BREEZE84MODERATE BREEZE135FRESH BREEZE19NOW, 21 MPH6STRONG BREEZE257NEAR GALE328GALE399STRONG GALE4710STORM5511VIOLENT STORM6412HURRICANE FORCE73TITLEMarshall/Ryan, the windSTATION REPORT · ASOS MMLTYPEPLAN north upSCALENOT TO SCALEREVAS REPORTED SHEET 3 of 6DATE2026-10-16IDSR-MML-3DRAWN AS linework on paperSOURCES FB-EVT-150, FB-ENG-008, FB-INS-002

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

-

Snow on the ground

Elsewhere in Minnesota

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

Near Arco

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

Near Arco

River and lake gauges