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Hillcrest, Illinois

Village in Ogle County, Illinois

Air quality

The air at Hillcrest

Index 8, good, led by ozone. Read at 1 AM from its reporting area, Rockford (IL), 26 miles off.

8Good
  • Fine particles (PM2.5)6Good-
  • Ozone8Good-

The days ahead

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

Smoke, the next 42 hours

No smoke near the ground through Sat 7 PM.

FriSat

Precipitation

What has fallen at Hillcrest

0.51 in in the last 24 hours, 0.58 in over the last 3 days, to Fri 1 AM. Measured by radar and rain gauges, as water.

Last 24 hours
0.51in
Last 3 days
0.58in

Visibility

How far you can see at Hillcrest, the next 42 hours

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

FriSat

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

What is measuring near here

The 7 instruments nearest Hillcrest, how far away each one is, how high it stands, and what kind of measurement it makes. The nearest is 4.2 miles away.

measured now5 instruments

RochelleRPJ

At an airfield/4.2 mi away/781 ft/30 ft below here

temp, wind, gust, visibility, precip, pressure

Rank522of 1,393

ShabbonaSBNI2

At a river or reservoir gauge/13.6 mi away/863 ft/52 ft above here

temp, wind, gust, humidity, pressure

Rank558of 1,393

measured daily2 instruments

Steward 3SSTWI2

At a cooperative observer's station/10.2 mi away/810 ft/1 ft below here

snowfall, snow depth, precip, high, low

Rank158of 1,393

Station report

The weather at Rochelle, drawn

The nearest airport reporting now, 4.2 mi from Hillcrest, Illinois. From its report of Oct 16, 2026, 1:35 AM local time: 3 of its 6 sheets.

The sky

Overcast at 1,900 ft; the ceiling is 1,900 ft; visibility 7 mi.

Section of the sky over Rochelle, height above the station to scale: overcast cloud with its base at 1,900 feet, the ceiling at 1,900 feet, and visibility of 7 mi.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT RPJFIG. A THE SKY OVER ROCHELLESECTION, 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 SHEETOVC 1,900 FTOVERCAST, 8 EIGHTHS OF THE SKYCEILING 1,900 FTVISIBILITY, MILES: 7 MI0510TITLERochelle, the skySTATION REPORT · ASOS RPJTYPESECTIONSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 1 of 6DATE2026-10-16IDSR-RPJ-1DRAWN AS linework on paperSOURCES FB-SKY-001, FB-SKY-017, FB-SKY-016, FB-SKY-018

The air

51.8 F with a dew point of 47.5 F, 85 per cent relative humidity. Air lifted from the station would cool to its dew point, where cloud forms, about 1,000 ft up; the lowest cloud reported is at 1,900 ft.

Chart of the air at Rochelle: temperature 51.8 degrees Fahrenheit and dew point 47.5, 85 per cent relative humidity; air lifted from the station cools along the dry rate and meets its dew point about 1,000 feet above the station, against the lowest cloud reported at 1,900 feet; height to scale.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT RPJFIG. B THE AIR AT ROCHELLETHE 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 FSATURATES 1,000 FT ABOVE THE STATION, AT 46.5 FLOWEST CLOUD REPORTED, OVC 1,900 FTTEMPERATURE 51.8 FDEW POINT 47.5 FSPREAD 4.3 FRELATIVE HUMIDITY 85 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 POINTTITLERochelle, the airSTATION REPORT · ASOS RPJTYPECHARTSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 2 of 6DATE2026-10-16IDSR-RPJ-2DRAWN AS linework on paperSOURCES FB-WAT-002, FB-ENG-011, FB-ENG-005

The wind

From the west northwest (290 degrees) at 14 mph, gusting 24 mph: force 4, a moderate breeze on the Beaufort scale. The strongest gust today was 30 mph.

Plan of the wind at Rochelle, north up: blowing from 290 degrees, the west northwest, at 14 miles an hour, gusting 24; beside it the Beaufort scale from calm to hurricane force, force 4, moderate breeze, marked.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT RPJFIG. C THE WIND AT ROCHELLEPLAN, NORTH UP: THE WIND AS REPORTED, AND WHERE IT SITS ON THE BEAUFORT SCALENESWTHE STATIONFROM 290°BEAUFORT FORCELEAST WIND, MPH0CALM01LIGHT AIR12LIGHT BREEZE43GENTLE BREEZE84MODERATE BREEZE13NOW, 14 MPH5FRESH BREEZE19GUST, 24 MPH6STRONG BREEZE257NEAR GALE328GALE399STRONG GALE4710STORM5511VIOLENT STORM6412HURRICANE FORCE73TITLERochelle, the windSTATION REPORT · ASOS RPJTYPEPLAN north upSCALENOT TO SCALEREVAS REPORTED SHEET 3 of 6DATE2026-10-16IDSR-RPJ-3DRAWN AS linework on paperSOURCES FB-EVT-150, FB-ENG-008, FB-INS-002

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

0in

Snow on the ground

Measured at Steward 3S (STWI2), 10.2 miles from here, read 15 Oct, 07:00. measured daily

Elsewhere in Illinois

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

Near Hillcrest

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

Near Hillcrest

River and lake gauges