Storm Station
Union, Illinois
47° 67°/46°
Clear· Feels like 47°·Light air 3 mph NE
Patchy fog. Mostly cloudy, with a low around 48. East northeast wind around 0 mph.
0UV Low
31Air quality
93%Humidity
9%Cloud
Now
3:15 AM
47feels47
now, clear
Today
Sep 27
6746
overcast
Mon
Sep 28
7048
overcast
Tue
Sep 29
7253
11%
overcast
Wed
Sep 30
7563
48%
14mph
drizzle light
Thu
Oct 1
6954
58%
13mph
drizzle
Fri
Oct 2
6244
33%
overcast
Sat
Oct 3
6543
19%
overcast
47°
67°46°
70°48°
72°53°
75°63°
69°54°
62°44°
65°43°

As of 3:15 AM in Union, Illinois.

What is measuring near here

The 6 instruments nearest Union, how far away each one is, how high it stands, and what kind of measurement it makes. The nearest is 2.3 miles away.

measured now4 instruments

Kishwaukee Valley RdIMC02

Beside a road/8.2 mi away/817 ft/16 ft below here

temp, pavement temp, wind, visibility, precip

Rank413of 417

De KalbDKB

At an airfield/22.5 mi away/915 ft/82 ft above here

temp, wind, gust, visibility, precip, pressure

Rank286of 417

ShabbonaSBNI2

At a river or reservoir gauge/31.4 mi away/863 ft/30 ft above here

temp, wind, gust, humidity, pressure

Rank123of 417

Shabbona 5 NNE54811

At a climate reference station/31.6 mi away/861 ft/28 ft above here

temp, humidity, wind, solar, precip

Rank-

measured daily2 instruments

Marengo 0.7 ESEIL-MCH-63

In a volunteer observer's own ground/2.3 mi away/823 ft/10 ft below here

precip, snowfall, snow depth

Rank-

Crystal Lake 4NWCRYI2

At a cooperative observer's station/7.7 mi away/932 ft/99 ft above here

snowfall, snow depth, precip, high, low

Rank-

Station report

The weather at De Kalb, drawn

The nearest airport reporting now, 22.5 mi from Union. From its report of Sep 27, 2026, 3:15 AM 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 De Kalb, 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 DKBFIG. A THE SKY OVER DE KALBSECTION, 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 MORE0510TITLEDe Kalb, the skySTATION REPORT · ASOS DKBTYPESECTIONSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 1 of 6DATE2026-09-27IDSR-DKB-1DRAWN AS linework on paperSOURCES FB-SKY-001

The air

47.5 F with a dew point of 47.5 F, 100 per cent relative humidity. The air is saturated at the ground.

Chart of the air at De Kalb: temperature 47.5 degrees Fahrenheit and dew point 47.5, 100 per cent relative humidity; the air saturated at the ground; height to scale.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT DKBFIG. B THE AIR AT DE KALBTHE REPORTED TEMPERATURE AND DEW POINT, AND AIR LIFTED FROM THE STATION WITHOUT MIXING UNTIL IT SATURATES; HEIGHT ABOVE THE STATION TO SCALEFT ABOVE THE STATION01,0002,0003,00040 F50 F60 FSATURATED AT THE GROUNDTEMPERATURE AND DEW POINT 47.5 F, 47.5 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 POINTTITLEDe Kalb, the airSTATION REPORT · ASOS DKBTYPECHARTSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 2 of 6DATE2026-09-27IDSR-DKB-2DRAWN AS linework on paperSOURCES FB-WAT-020, FB-WAT-002, FB-ENG-011, FB-ENG-005

The wind

From the east northeast (60 degrees) at 3 mph: force 1, a light air on the Beaufort scale.

Plan of the wind at De Kalb, north up: blowing from 60 degrees, the east northeast, at 3 miles an hour; beside it the Beaufort scale from calm to hurricane force, force 1, light air, marked.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT DKBFIG. C THE WIND AT DE KALBPLAN, NORTH UP: THE WIND AS REPORTED, AND WHERE IT SITS ON THE BEAUFORT SCALENESWTHE STATIONFROM 60°BEAUFORT FORCELEAST WIND, MPH0CALM01LIGHT AIR1NOW, 3 MPH2LIGHT BREEZE43GENTLE BREEZE84MODERATE BREEZE135FRESH BREEZE196STRONG BREEZE257NEAR GALE328GALE399STRONG GALE4710STORM5511VIOLENT STORM6412HURRICANE FORCE73TITLEDe Kalb, the windSTATION REPORT · ASOS DKBTYPEPLAN north upSCALENOT TO SCALEREVAS REPORTED SHEET 3 of 6DATE2026-09-27IDSR-DKB-3DRAWN AS linework on paperSOURCES FB-EVT-150, FB-ENG-008, FB-INS-002

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

-in

Snow on the ground

Elsewhere in Illinois

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

Near Union

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