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Lena, Illinois

Village in Stephenson County, Illinois

Air quality

The air at Lena

Index 18, good, led by fine particles. Read at 1 PM from its reporting area, Rockford (IL), 40 miles off.

18Good
  • Fine particles (PM2.5)18Good-
  • Ozone18Good-

The days ahead

Good each day through Mon Oct 19, led by fine particles. Yesterday measured 18, good.

Smoke, the next 43 hours

No smoke near the ground through Sun 7 AM.

FriSatSun

Precipitation

What has fallen at Lena

0.42 in in the last 24 hours, 0.48 in over the last 3 days, to Fri 12 PM. Measured by radar and rain gauges, as water.

Last 24 hours
0.42in
Last 3 days
0.48in

Visibility

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

Visibility stays 8 miles or more through Sun 7 AM, lowest 9 miles Sat 5 AM.

FriSatSun

On the radar over Lena, IllinoisReflectivityStorm topsRain rateRain, last 24 hoursForecast temperatureForecast rain totalEvery picture

What is measuring near here

The 6 instruments nearest Lena, how far away each one is, how high it stands, and what kind of measurement it makes. The nearest is 0.3 miles away.

measured now4 instruments

FreeportFEP

At an airfield/15.6 mi away/860 ft/100 ft below here

temp, wind, gust, visibility, precip, pressure

Rank335of 1,393

measured daily2 instruments

Lena 0.3 SSEIL-SP-31

In a volunteer observer's own ground/0.3 mi away/963 ft/3 ft above here

precip, snowfall, snow depth

Rank53of 1,393

Stockton 3NNESTOI2

At a cooperative observer's station/8.4 mi away/955 ft/5 ft below here

snowfall, snow depth, precip, high, low

Rank298of 1,393

Station report

The weather at Freeport, drawn

The nearest airport reporting now, 15.6 mi from Lena, Illinois. From its report of Oct 16, 2026, 1:15 PM local time: 3 of its 6 sheets.

The sky

Scattered at 3,000 ft, broken at 3,800 ft, overcast at 4,400 ft; the ceiling is 3,800 ft; visibility 10 mi or more.

Section of the sky over Freeport, height above the station to scale: scattered cloud with its base at 3,000 feet, broken cloud with its base at 3,800 feet, overcast cloud with its base at 4,400 feet, the ceiling at 3,800 feet, and visibility of 10 mi or more.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT FEPFIG. A THE SKY OVER FREEPORTSECTION, 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 STATION01,0002,0003,0004,0005,0006,0007,000ETAGESLOWMIDDLETHE STATIONTHE CEILOMETER READS TO 12,000 FT, ABOVE THIS SHEETOVC 4,400 FTOVERCAST, 8 EIGHTHS OF THE SKYBKN 3,800 FTBROKEN, 5 TO 7 EIGHTHS OF THE SKYSCT 3,000 FTSCATTERED, 3 TO 4 EIGHTHS OF THE SKYCEILING 3,800 FTVISIBILITY, MILES: 10 MI OR MORE0510TITLEFreeport, the skySTATION REPORT · ASOS FEPTYPESECTIONSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 1 of 6DATE2026-10-16IDSR-FEP-1DRAWN AS linework on paperSOURCES FB-SKY-001, FB-SKY-017, FB-SKY-016, FB-SKY-018

The air

53.8 F with a dew point of 45.3 F, 73 per cent relative humidity. Air lifted from the station would cool to its dew point, where cloud forms, about 2,000 ft up; the lowest cloud reported is at 3,000 ft.

Chart of the air at Freeport: temperature 53.8 degrees Fahrenheit and dew point 45.3, 73 per cent relative humidity; air lifted from the station cools along the dry rate and meets its dew point about 2,000 feet above the station, against the lowest cloud reported at 3,000 feet; height to scale.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT FEPFIG. B THE AIR AT FREEPORTTHE 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 2,000 FT ABOVE THE STATION, AT 43.4 FLOWEST CLOUD REPORTED, SCT 3,000 FTTEMPERATURE 53.8 FDEW POINT 45.3 FSPREAD 8.5 FRELATIVE HUMIDITY 73 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 POINTTITLEFreeport, the airSTATION REPORT · ASOS FEPTYPECHARTSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 2 of 6DATE2026-10-16IDSR-FEP-2DRAWN AS linework on paperSOURCES FB-WAT-002, FB-ENG-011, FB-ENG-005

The wind

From the north (360 degrees) at 18 mph, gusting 31 mph: force 4, a moderate breeze on the Beaufort scale. The strongest gust today was 31 mph.

Plan of the wind at Freeport, north up: blowing from 360 degrees, the north, at 18 miles an hour, gusting 31; beside it the Beaufort scale from calm to hurricane force, force 4, moderate breeze, marked.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT FEPFIG. C THE WIND AT FREEPORTPLAN, NORTH UP: THE WIND AS REPORTED, AND WHERE IT SITS ON THE BEAUFORT SCALENESWTHE STATIONFROM 360°BEAUFORT FORCELEAST WIND, MPH0CALM01LIGHT AIR12LIGHT BREEZE43GENTLE BREEZE84MODERATE BREEZE13NOW, 18 MPH5FRESH BREEZE196STRONG BREEZE25GUST, 31 MPH7NEAR GALE328GALE399STRONG GALE4710STORM5511VIOLENT STORM6412HURRICANE FORCE73TITLEFreeport, the windSTATION REPORT · ASOS FEPTYPEPLAN north upSCALENOT TO SCALEREVAS REPORTED SHEET 3 of 6DATE2026-10-16IDSR-FEP-3DRAWN AS linework on paperSOURCES FB-EVT-150, FB-ENG-008, FB-INS-002

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

0in

Snow on the ground

Measured at Stockton 3NNE (STOI2), 8.4 miles from here, read 16 Oct, 07:00. measured daily

Elsewhere in Illinois

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

Near Lena

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

Near Lena

River and lake gauges