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Lester, Iowa

City in Lyon County, Iowa

Air quality

The air at Lester

Index 16, good, led by ozone. Read at 4 AM from its reporting area, Sioux Falls (SD), 20 miles off.

16Good
  • Fine particles (PM2.5)14Good-
  • Ozone16Good-
  • Coarse particles (PM10)12Good-

The days ahead

Yesterday measured 32, good.

Smoke, the next 46 hours

No smoke near the ground through Sun 1 AM.

FriSat

Precipitation

What has fallen at Lester

0.66 in in the last 24 hours, 0.67 in over the last 3 days, to Fri 3 AM. Measured by radar and rain gauges, as water.

Last 24 hours
0.66in
Last 3 days
0.67in

Visibility

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

Visibility stays 10 miles or more through Sun 1 AM.

FriSat

On the radar over Lester, IowaReflectivityStorm topsRain rateRain, last 24 hoursForecast temperatureForecast rain totalEvery picture

What is measuring near here

The 5 instruments nearest Lester, how far away each one is, how high it stands, and what kind of measurement it makes. The nearest is 0.5 miles away.

measured now3 instruments

SheldonSHL

At an airfield/29.6 mi away/1,418 ft/15 ft above here

temp, wind, gust, visibility, precip, pressure

Rank216of 1,060

SibleyRSYI4

Beside a road/30.9 mi away/1,574 ft/171 ft above here

temp, pavement temp, wind, visibility, precip

Rank851of 1,060

measured daily2 instruments

Lester 0.5 SSWIA-LY-15

In a volunteer observer's own ground/0.5 mi away/1,373 ft/30 ft below here

precip, snowfall, snow depth

Rank-

Rock RapidsRKRI4

At a cooperative observer's station/8.2 mi away/1,378 ft/25 ft below here

snowfall, snow depth, precip, high, low

Rank902of 1,060

Station report

The weather at Sheldon, drawn

The nearest airport reporting now, 29.6 mi from Lester, Iowa. From its report of Oct 16, 2026, 4:35 AM local time: 3 of its 6 sheets.

The sky

Overcast at 2,200 ft; the ceiling is 2,200 ft; visibility 10 mi or more.

Section of the sky over Sheldon, height above the station to scale: overcast cloud with its base at 2,200 feet, the ceiling at 2,200 feet, and visibility of 10 mi or more.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT SHLFIG. A THE SKY OVER SHELDONSECTION, 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 STATION05001,0001,5002,0002,5003,0003,500ETAGESLOWTHE STATIONTHE CEILOMETER READS TO 12,000 FT, ABOVE THIS SHEETOVC 2,200 FTOVERCAST, 8 EIGHTHS OF THE SKYCEILING 2,200 FTVISIBILITY, MILES: 10 MI OR MORE0510TITLESheldon, the skySTATION REPORT · ASOS SHLTYPESECTIONSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 1 of 6DATE2026-10-16IDSR-SHL-1DRAWN AS linework on paperSOURCES FB-SKY-001, FB-SKY-017, FB-SKY-016, FB-SKY-018

The air

42.8 F with a dew point of 42.8 F, 100 per cent relative humidity. The air is saturated at the ground; the lowest cloud reported is at 2,200 ft.

Chart of the air at Sheldon: temperature 42.8 degrees Fahrenheit and dew point 42.8, 100 per cent relative humidity; the air saturated at the ground, against the lowest cloud reported at 2,200 feet; height to scale.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT SHLFIG. B THE AIR AT SHELDONTHE REPORTED TEMPERATURE AND DEW POINT, AND AIR LIFTED FROM THE STATION WITHOUT MIXING UNTIL IT SATURATES; HEIGHT ABOVE THE STATION TO SCALEFT ABOVE THE STATION01,0002,0003,00030 F40 F50 FSATURATED AT THE GROUNDLOWEST CLOUD REPORTED, OVC 2,200 FTTEMPERATURE AND DEW POINT 42.8 F, 42.8 FRELATIVE HUMIDITY 100 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 POINTTITLESheldon, the airSTATION REPORT · ASOS SHLTYPECHARTSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 2 of 6DATE2026-10-16IDSR-SHL-2DRAWN AS linework on paperSOURCES FB-WAT-020, FB-WAT-002, FB-ENG-011, FB-ENG-005

The wind

From the north northwest (330 degrees) at 21 mph, gusting 36 mph: force 5, a fresh breeze on the Beaufort scale. The strongest gust today was 37 mph.

Plan of the wind at Sheldon, north up: blowing from 330 degrees, the north northwest, at 21 miles an hour, gusting 36; beside it the Beaufort scale from calm to hurricane force, force 5, fresh breeze, marked.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT SHLFIG. C THE WIND AT SHELDONPLAN, NORTH UP: THE WIND AS REPORTED, AND WHERE IT SITS ON THE BEAUFORT SCALENESWTHE STATIONFROM 330°BEAUFORT FORCELEAST WIND, MPH0CALM01LIGHT AIR12LIGHT BREEZE43GENTLE BREEZE84MODERATE BREEZE135FRESH BREEZE19NOW, 21 MPH6STRONG BREEZE257NEAR GALE32GUST, 36 MPH8GALE399STRONG GALE4710STORM5511VIOLENT STORM6412HURRICANE FORCE73TITLESheldon, the windSTATION REPORT · ASOS SHLTYPEPLAN north upSCALENOT TO SCALEREVAS REPORTED SHEET 3 of 6DATE2026-10-16IDSR-SHL-3DRAWN AS linework on paperSOURCES FB-EVT-150, FB-ENG-008, FB-INS-002

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

0in

Snow on the ground

Measured at Rock Rapids (RKRI4), 8.2 miles from here, read 15 Oct, 08:00. measured daily

Elsewhere in Iowa

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

Near Lester

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

Near Lester

River and lake gauges