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Prairietown, Illinois

Community in Madison County, Illinois

Air quality

The air at Prairietown

Index 23, good, led by ozone. Read at 11 PM from its reporting area, St. Louis (Metro-east) (IL), 27 miles off.

23Good
  • Fine particles (PM2.5)16Good12.5 mi
  • Ozone23Good12 ppb12.5 mi
  • Coarse particles (PM10)6Good21.8 mi
  • Nitrogen dioxide5Good5.7 ppb17.8 mi

The days ahead

Highest moderate, today, led by fine particles. Yesterday measured 39, good.

Smoke, the next 45 hours

No smoke near the ground through Sat 7 PM.

FriSat

Precipitation

What has fallen at Prairietown

0.45 in in the last 24 hours, 1.20 in over the last 3 days, to Thu 10 PM. Measured by radar and rain gauges, as water.

Last 24 hours
0.45in
Last 3 days
1.20in

Visibility

How far you can see at Prairietown, the next 45 hours

Visibility stays 3 miles or more through Sat 7 PM, lowest 3 miles Fri 4 PM.

FriSat

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

What is measuring near here

The 6 instruments nearest Prairietown, how far away each one is, how high it stands, and what kind of measurement it makes. The nearest is 7.2 miles away.

measured now4 instruments

measured daily2 instruments

Staunton 0.6 SWIL-MP-21

In a volunteer observer's own ground/7.2 mi away/619 ft/41 ft above here

precip, snowfall, snow depth

Rank-

Mount OliveMTOI2

At a cooperative observer's station/13.9 mi away/663 ft/85 ft above here

snowfall, snow depth, precip, high, low

Rank-

Station report

The weather at Alton/St Louis R, drawn

The nearest airport reporting now, 8.5 mi from Prairietown, Illinois. From its report of Oct 15, 2026, 11:15 PM local time: 3 of its 6 sheets.

The sky

Broken at 1,100 ft, broken at 1,600 ft, overcast at 4,600 ft; the ceiling is 1,100 ft; visibility 7 mi.

Section of the sky over Alton/St Louis R, height above the station to scale: broken cloud with its base at 1,100 feet, broken cloud with its base at 1,600 feet, overcast cloud with its base at 4,600 feet, the ceiling at 1,100 feet, and visibility of 7 mi.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT ALNFIG. A THE SKY OVER ALTON/ST LOUIS RSECTION, 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 4,600 FTOVERCAST, 8 EIGHTHS OF THE SKYBKN 1,600 FTBROKEN, 5 TO 7 EIGHTHS OF THE SKYBKN 1,100 FTBROKEN, 5 TO 7 EIGHTHS OF THE SKYCEILING 1,100 FTVISIBILITY, MILES: 7 MI0510TITLEAlton/St Louis R, the skySTATION REPORT · ASOS ALNTYPESECTIONSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 1 of 6DATE2026-10-16IDSR-ALN-1DRAWN AS linework on paperSOURCES FB-SKY-001, FB-SKY-017, FB-SKY-016, FB-SKY-018

The air

60.8 F with a dew point of 58.0 F, 90 per cent relative humidity. Air lifted from the station would cool to its dew point, where cloud forms, about 700 ft up; the lowest cloud reported is at 1,100 ft.

Chart of the air at Alton/St Louis R: temperature 60.8 degrees Fahrenheit and dew point 58.0, 90 per cent relative humidity; air lifted from the station cools along the dry rate and meets its dew point about 700 feet above the station, against the lowest cloud reported at 1,100 feet; height to scale.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT ALNFIG. B THE AIR AT ALTON/ST LOUIS RTHE 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 700 FT ABOVE THE STATION, AT 57.3 FLOWEST CLOUD REPORTED, BKN 1,100 FTTEMPERATURE AND DEW POINT 60.8 F, 58.0 FRELATIVE HUMIDITY 90 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 POINTTITLEAlton/St Louis R, the airSTATION REPORT · ASOS ALNTYPECHARTSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 2 of 6DATE2026-10-16IDSR-ALN-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 16 mph, gusting 26 mph: force 4, a moderate breeze on the Beaufort scale. The strongest gust today was 36 mph.

Plan of the wind at Alton/St Louis R, north up: blowing from 300 degrees, the west northwest, at 16 miles an hour, gusting 26; beside it the Beaufort scale from calm to hurricane force, force 4, moderate breeze, marked.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT ALNFIG. C THE WIND AT ALTON/ST LOUIS RPLAN, NORTH UP: THE WIND AS REPORTED, AND WHERE IT SITS ON THE BEAUFORT SCALENESWTHE STATIONFROM 300°BEAUFORT FORCELEAST WIND, MPH0CALM01LIGHT AIR12LIGHT BREEZE43GENTLE BREEZE84MODERATE BREEZE13NOW, 16 MPH5FRESH BREEZE196STRONG BREEZE25GUST, 26 MPH7NEAR GALE328GALE399STRONG GALE4710STORM5511VIOLENT STORM6412HURRICANE FORCE73TITLEAlton/St Louis R, the windSTATION REPORT · ASOS ALNTYPEPLAN north upSCALENOT TO SCALEREVAS REPORTED SHEET 3 of 6DATE2026-10-16IDSR-ALN-3DRAWN AS linework on paperSOURCES FB-EVT-150, FB-ENG-008, FB-INS-002

The full report of Alton/St Louis R, 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 Prairietown

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

Near Prairietown

River and lake gauges