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Chain of Rocks, Missouri

Village in Lincoln County, Missouri

Air quality

The air at Chain of Rocks

Index 19, good, led by ozone. Read at 12 AM from its reporting area, Saint Louis (MO), 20 miles off.

19Good
  • Fine particles (PM2.5)14Good-
  • Ozone19Good13 ppb9.1 mi
  • Coarse particles (PM10)7Good-
  • Nitrogen dioxide1Good1.7 ppb22.2 mi
  • Sulfur dioxide0Good0.3 ppb22.2 mi

The days ahead

Yesterday measured 44, good.

Smoke, the next 44 hours

No smoke near the ground through Sat 7 PM.

FriSat

Precipitation

What has fallen at Chain of Rocks

1.05 in in the last 24 hours, 1.90 in over the last 3 days, to Thu 11 PM. Measured by radar and rain gauges, as water.

Last 24 hours
1.05in
Last 3 days
1.90in

Visibility

How far you can see at Chain of Rocks, the next 44 hours

Visibility stays 7 miles or more through Sat 7 PM, lowest 8 miles Fri 6 PM.

FriSat

On the radar over Chain of Rocks, MissouriReflectivityStorm topsRain rateRain, last 24 hoursForecast temperatureForecast rain totalEvery picture

What is measuring near here

The 6 instruments nearest Chain of Rocks, how far away each one is, how high it stands, and what kind of measurement it makes. The nearest is 3.2 miles away.

measured now4 instruments

measured daily2 instruments

Old Monroe 3.6 NWMO-LC-9

In a volunteer observer's own ground/3.2 mi away/549 ft/103 ft above here

precip, snowfall, snow depth

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Station report

The weather at St. Louis/Spirit, drawn

The nearest airport reporting now, 19.4 mi from Chain of Rocks, Missouri. From its report of Oct 16, 2026, 12:13 AM local time: 3 of its 6 sheets.

The sky

Broken at 1,500 ft, overcast at 2,000 ft; the ceiling is 1,500 ft; visibility 10 mi or more.

Section of the sky over St. Louis/Spirit, height above the station to scale: broken cloud with its base at 1,500 feet, overcast cloud with its base at 2,000 feet, the ceiling at 1,500 feet, and visibility of 10 mi or more.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT SUSFIG. A THE SKY OVER ST. LOUIS/SPIRITSECTION, 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 2,000 FTOVERCAST, 8 EIGHTHS OF THE SKYBKN 1,500 FTBROKEN, 5 TO 7 EIGHTHS OF THE SKYCEILING 1,500 FTVISIBILITY, MILES: 10 MI OR MORE0510TITLESt. Louis/Spirit, the skySTATION REPORT · ASOS SUSTYPESECTIONSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 1 of 6DATE2026-10-16IDSR-SUS-1DRAWN AS linework on paperSOURCES FB-SKY-001, FB-SKY-017, FB-SKY-016, FB-SKY-018

The air

57.0 F with a dew point of 53.0 F, 86 per cent relative humidity. Air lifted from the station would cool to its dew point, where cloud forms, about 900 ft up; the lowest cloud reported is at 1,500 ft.

Chart of the air at St. Louis/Spirit: temperature 57.0 degrees Fahrenheit and dew point 53.0, 86 per cent relative humidity; air lifted from the station cools along the dry rate and meets its dew point about 900 feet above the station, against the lowest cloud reported at 1,500 feet; height to scale.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT SUSFIG. B THE AIR AT ST. LOUIS/SPIRITTHE 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 F70 FSATURATES 900 FT ABOVE THE STATION, AT 52.1 FLOWEST CLOUD REPORTED, BKN 1,500 FTTEMPERATURE 57.0 FDEW POINT 53.0 FSPREAD 4.0 FRELATIVE HUMIDITY 86 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 POINTTITLESt. Louis/Spirit, the airSTATION REPORT · ASOS SUSTYPECHARTSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 2 of 6DATE2026-10-16IDSR-SUS-2DRAWN AS linework on paperSOURCES FB-WAT-020, FB-WAT-002, FB-ENG-011, FB-ENG-005

The wind

From the west northwest (290 degrees) at 15 mph, gusting 23 mph: force 4, a moderate breeze on the Beaufort scale. The strongest gust today was 23 mph.

Plan of the wind at St. Louis/Spirit, north up: blowing from 290 degrees, the west northwest, at 15 miles an hour, gusting 23; beside it the Beaufort scale from calm to hurricane force, force 4, moderate breeze, marked.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT SUSFIG. C THE WIND AT ST. LOUIS/SPIRITPLAN, NORTH UP: THE WIND AS REPORTED, AND WHERE IT SITS ON THE BEAUFORT SCALENESWTHE STATIONFROM 290°BEAUFORT FORCELEAST WIND, MPH0CALM01LIGHT AIR12LIGHT BREEZE43GENTLE BREEZE84MODERATE BREEZE13NOW, 15 MPH5FRESH BREEZE19GUST, 23 MPH6STRONG BREEZE257NEAR GALE328GALE399STRONG GALE4710STORM5511VIOLENT STORM6412HURRICANE FORCE73TITLESt. Louis/Spirit, the windSTATION REPORT · ASOS SUSTYPEPLAN north upSCALENOT TO SCALEREVAS REPORTED SHEET 3 of 6DATE2026-10-16IDSR-SUS-3DRAWN AS linework on paperSOURCES FB-EVT-150, FB-ENG-008, FB-INS-002

The full report of St. Louis/Spirit, in 6 sheets, each beside the Field Book plates that explain it

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Snow on the ground

Elsewhere in Missouri

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

Near Chain of Rocks

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

Near Chain of Rocks

River and lake gauges