Storm Station
Sign in

Altamont, Illinois

City in Effingham County, Illinois

Air quality

The air at Altamont

Index 24, good, led by fine particles. Read at 11 PM from its reporting area, Decatur (IL), 56 miles off.

24Good
  • Fine particles (PM2.5)24Good-
  • Ozone10Good19 ppb10.8 mi

The days ahead

Good each day through Mon Oct 19, led by fine particles. Yesterday measured 45, good.

Smoke, the next 44 hours

No smoke near the ground through Sat 7 PM.

FriSat

Precipitation

What has fallen at Altamont

0.59 in in the last 24 hours, 0.78 in over the last 3 days, to Thu 11 PM. Measured by radar and rain gauges, as water.

Last 24 hours
0.59in
Last 3 days
0.78in

Visibility

How far you can see at Altamont, the next 44 hours

Visibility stays 8 miles or more through Sat 7 PM, lowest 9 miles Fri 12 AM.

FriSat

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

What is measuring near here

The 6 instruments nearest Altamont, how far away each one is, how high it stands, and what kind of measurement it makes. The nearest is 0.2 miles away.

measured now4 instruments

Effingham1H2

At an airfield/11.5 mi away/587 ft/34 ft below here

temp, wind, gust, visibility, precip, pressure

Rank629of 1,393

FloraFOAI2

At a river or reservoir gauge/31.0 mi away/490 ft/131 ft below here

temp, wind, gust, humidity, pressure

Rank888of 1,393

measured daily2 instruments

Altamont 0.2 ESEIL-EF-14

In a volunteer observer's own ground/0.2 mi away/618 ft/3 ft below here

precip, snowfall, snow depth

Rank-

Station report

The weather at Effingham, drawn

The nearest airport reporting now, 11.5 mi from Altamont, Illinois. From its report of Oct 15, 2026, 11:35 PM local time: 3 of its 6 sheets.

The sky

Overcast at 4,000 ft; the ceiling is 4,000 ft; visibility 10 mi or more.

Section of the sky over Effingham, height above the station to scale: overcast cloud with its base at 4,000 feet, the ceiling at 4,000 feet, and visibility of 10 mi or more.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT 1H2FIG. A THE SKY OVER EFFINGHAMSECTION, 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 STATION01,0002,0003,0004,0005,0006,000ETAGESLOWTHE STATIONTHE CEILOMETER READS TO 12,000 FT, ABOVE THIS SHEETOVC 4,000 FTOVERCAST, 8 EIGHTHS OF THE SKYCEILING 4,000 FTVISIBILITY, MILES: 10 MI OR MORE0510TITLEEffingham, the skySTATION REPORT · ASOS 1H2TYPESECTIONSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 1 of 6DATE2026-10-16IDSR-1H2-1DRAWN AS linework on paperSOURCES FB-SKY-001, FB-SKY-017, FB-SKY-016, FB-SKY-018

The air

72.5 F with a dew point of 66.7 F, 82 per cent relative humidity. Air lifted from the station would cool to its dew point, where cloud forms, about 1,400 ft up; the lowest cloud reported is at 4,000 ft.

Chart of the air at Effingham: temperature 72.5 degrees Fahrenheit and dew point 66.7, 82 per cent relative humidity; air lifted from the station cools along the dry rate and meets its dew point about 1,400 feet above the station, against the lowest cloud reported at 4,000 feet; height to scale.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT 1H2FIG. B THE AIR AT EFFINGHAMTHE REPORTED TEMPERATURE AND DEW POINT, AND AIR LIFTED FROM THE STATION WITHOUT MIXING UNTIL IT SATURATES; HEIGHT ABOVE THE STATION TO SCALEFT ABOVE THE STATION01,0002,0003,0004,0005,00050 F60 F70 F80 FSATURATES 1,400 FT ABOVE THE STATION, AT 65.3 FLOWEST CLOUD REPORTED, OVC 4,000 FTTEMPERATURE 72.5 FDEW POINT 66.7 FSPREAD 5.8 FRELATIVE HUMIDITY 82 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 POINTTITLEEffingham, the airSTATION REPORT · ASOS 1H2TYPECHARTSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 2 of 6DATE2026-10-16IDSR-1H2-2DRAWN AS linework on paperSOURCES FB-WAT-002, FB-ENG-011, FB-ENG-005

The wind

From the southwest (220 degrees) at 10 mph: force 3, a gentle breeze on the Beaufort scale. The strongest gust today was 16 mph.

Plan of the wind at Effingham, north up: blowing from 220 degrees, the southwest, at 10 miles an hour; beside it the Beaufort scale from calm to hurricane force, force 3, gentle breeze, marked.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT 1H2FIG. C THE WIND AT EFFINGHAMPLAN, NORTH UP: THE WIND AS REPORTED, AND WHERE IT SITS ON THE BEAUFORT SCALENESWTHE STATIONFROM 220°BEAUFORT FORCELEAST WIND, MPH0CALM01LIGHT AIR12LIGHT BREEZE43GENTLE BREEZE8NOW, 10 MPH4MODERATE BREEZE135FRESH BREEZE196STRONG BREEZE257NEAR GALE328GALE399STRONG GALE4710STORM5511VIOLENT STORM6412HURRICANE FORCE73TITLEEffingham, the windSTATION REPORT · ASOS 1H2TYPEPLAN north upSCALENOT TO SCALEREVAS REPORTED SHEET 3 of 6DATE2026-10-16IDSR-1H2-3DRAWN AS linework on paperSOURCES FB-EVT-150, FB-ENG-008, FB-INS-002

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

0in

Snow on the ground

Measured at Beecher City (BEEI2), 8.7 miles from here, read 15 Oct, 08:00. measured daily

Elsewhere in Illinois

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

Near Altamont

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

Near Altamont

River and lake gauges