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Summerfield, Illinois

Village in St. Clair County, Illinois

Air quality

The air at Summerfield

Index 17, good, led by ozone. Read at 1 AM from its reporting area, St. Louis (Metro-east) (IL), 12 miles off.

17Good
  • Fine particles (PM2.5)10Good22.2 mi
  • Ozone17Good14 ppb22.2 mi
  • Coarse particles (PM10)4Good22.2 mi
  • Nitrogen dioxide1Good1.2 ppb24.5 mi
  • Sulfur dioxide0Good0.4 ppb24.5 mi
  • Carbon monoxide-0 ppm24.5 mi

The days ahead

Good each day through Mon Oct 19, led by fine particles. Yesterday measured 39, good.

Smoke, the next 42 hours

No smoke near the ground through Sat 7 PM.

FriSat

Precipitation

What has fallen at Summerfield

0.35 in in the last 24 hours, 1.30 in over the last 3 days, to Fri 1 AM. Measured by radar and rain gauges, as water.

Last 24 hours
0.35in
Last 3 days
1.30in

Visibility

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

Visibility stays 8 miles or more through Sat 7 PM, lowest 9 miles Fri 5 PM.

FriSat

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

What is measuring near here

The 6 instruments nearest Summerfield, how far away each one is, how high it stands, and what kind of measurement it makes. The nearest is 2.8 miles away.

measured now4 instruments

measured daily2 instruments

Station report

The weather at Belleville - Scott AFB, drawn

The nearest airport reporting now, 6.5 mi from Summerfield, Illinois. From its report of Oct 16, 2026, 12:55 AM local time: 3 of its 6 sheets.

The sky

Overcast at 1,200 ft; the ceiling is 1,200 ft; visibility 7 mi.

Section of the sky over Belleville - Scott AFB, height above the station to scale: overcast cloud with its base at 1,200 feet, the ceiling at 1,200 feet, and visibility of 7 mi.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT BLVFIG. A THE SKY OVER BELLEVILLE - SCOTT AFBSECTION, 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 STATIONOVC 1,200 FTOVERCAST, 8 EIGHTHS OF THE SKYCEILING 1,200 FTVISIBILITY, MILES: 7 MI0510TITLEBelleville - Scott AFB, the skySTATION REPORT · ASOS BLVTYPESECTIONSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 1 of 6DATE2026-10-16IDSR-BLV-1DRAWN AS linework on paperSOURCES FB-SKY-001, FB-SKY-017, FB-SKY-016, FB-SKY-018

The air

60.0 F with a dew point of 59.0 F, 96 per cent relative humidity. Air lifted from the station would cool to its dew point, where cloud forms, about 200 ft up; the lowest cloud reported is at 1,200 ft.

Chart of the air at Belleville - Scott AFB: temperature 60.0 degrees Fahrenheit and dew point 59.0, 96 per cent relative humidity; air lifted from the station cools along the dry rate and meets its dew point about 200 feet above the station, against the lowest cloud reported at 1,200 feet; height to scale.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT BLVFIG. B THE AIR AT BELLEVILLE - SCOTT AFBTHE REPORTED TEMPERATURE AND DEW POINT, AND AIR LIFTED FROM THE STATION WITHOUT MIXING UNTIL IT SATURATES; HEIGHT ABOVE THE STATION TO SCALEFT ABOVE THE STATION01,0002,0003,00050 F60 F70 FSATURATES 200 FT ABOVE THE STATION, AT 58.7 FLOWEST CLOUD REPORTED, OVC 1,200 FTTEMPERATURE AND DEW POINT 60.0 F, 59.0 FRELATIVE HUMIDITY 96 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 POINTTITLEBelleville - Scott AFB, the airSTATION REPORT · ASOS BLVTYPECHARTSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 2 of 6DATE2026-10-16IDSR-BLV-2DRAWN AS linework on paperSOURCES FB-WAT-020, FB-WAT-002, FB-ENG-011, FB-ENG-005

The wind

From the west northwest (300 degrees) at 21 mph, gusting 26 mph: force 5, a fresh breeze on the Beaufort scale. The strongest gust today was 32 mph.

Plan of the wind at Belleville - Scott AFB, north up: blowing from 300 degrees, the west northwest, at 21 miles an hour, gusting 26; beside it the Beaufort scale from calm to hurricane force, force 5, fresh breeze, marked.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT BLVFIG. C THE WIND AT BELLEVILLE - SCOTT AFBPLAN, NORTH UP: THE WIND AS REPORTED, AND WHERE IT SITS ON THE BEAUFORT SCALENESWTHE STATIONFROM 300°BEAUFORT FORCELEAST WIND, MPH0CALM01LIGHT AIR12LIGHT BREEZE43GENTLE BREEZE84MODERATE BREEZE135FRESH BREEZE19NOW, 21 MPH6STRONG BREEZE25GUST, 26 MPH7NEAR GALE328GALE399STRONG GALE4710STORM5511VIOLENT STORM6412HURRICANE FORCE73TITLEBelleville - Scott AFB, the windSTATION REPORT · ASOS BLVTYPEPLAN north upSCALENOT TO SCALEREVAS REPORTED SHEET 3 of 6DATE2026-10-16IDSR-BLV-3DRAWN AS linework on paperSOURCES FB-EVT-150, FB-ENG-008, FB-INS-002

The full report of Belleville - Scott AFB, in 6 sheets, each beside the Field Book plates that explain it

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Snow on the ground

Elsewhere in Illinois

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

Near Summerfield

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

Near Summerfield

River and lake gauges