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Maryland Heights, Missouri

City in St. Louis County, Missouri

Air quality

The air at Maryland Heights

Index 16, good, led by ozone. Read at 8 PM from its reporting area, Saint Louis (MO), 15 miles off.

16Good
  • Fine particles (PM2.5)6Good11 mi
  • Ozone16Good12 ppb1.5 mi
  • Coarse particles (PM10)8Good14.3 mi
  • Nitrogen dioxide1Good1.3 ppb2.3 mi
  • Sulfur dioxide0Good0.2 ppb2.3 mi
  • Carbon monoxide-0.1 ppm11 mi

The days ahead

Yesterday measured 40, good.

Smoke, the next 42 hours

No smoke near the ground through Sun 1 PM.

FriSatSun

Precipitation

What has fallen at Maryland Heights

0.04 in in the last 24 hours, 1.20 in over the last 3 days, to Fri 7 PM. Measured by radar and rain gauges, as water.

Last 24 hours
0.04in
Last 3 days
1.20in

Visibility

How far you can see at Maryland Heights, the next 42 hours

Visibility stays 9 miles or more through Sun 1 PM, lowest 9 miles Sat 6 AM.

FriSatSun

On the radar over Maryland Heights, MissouriReflectivityStorm topsRain rateRain, last 24 hoursForecast temperatureForecast rain totalEvery picture

What is measuring near here

The 6 instruments nearest Maryland Heights, how far away each one is, how high it stands, and what kind of measurement it makes. The nearest is 0.3 miles away.

measured now4 instruments

St. LouisSTL

At an airfield/4.8 mi away/561 ft/30 ft above here

temp, wind, gust, visibility, precip, pressure

Rank782of 1,043

St. CharlesSCLM7

At a river or reservoir gauge/5.1 mi away/443 ft/88 ft below here

temp, wind, gust, humidity, pressure

Rank561of 1,043

measured daily2 instruments

Maryland Heights 1.2 ESEMO-SL-79

In a volunteer observer's own ground/0.3 mi away/523 ft/8 ft below here

precip, snowfall, snow depth

Rank-

Station report

The weather at St. Louis, drawn

The nearest airport reporting now, 4.8 mi from Maryland Heights, Missouri. From its report of Oct 16, 2026, 7:51 PM local time: 3 of its 6 sheets.

The sky

A few clouds at 2,800 ft, broken at 4,400 ft, overcast at 5,000 ft; the ceiling is 4,400 ft; visibility 10 mi or more.

Section of the sky over St. Louis, height above the station to scale: a few clouds cloud with its base at 2,800 feet, broken cloud with its base at 4,400 feet, overcast cloud with its base at 5,000 feet, the ceiling at 4,400 feet, and visibility of 10 mi or more.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT STLFIG. A THE SKY OVER ST. LOUISSECTION, 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 STATION01,0002,0003,0004,0005,0006,0007,0008,000ETAGESLOWMIDDLETHE STATIONTHE CEILOMETER READS TO 12,000 FT, ABOVE THIS SHEETOVC 5,000 FTOVERCAST, 8 EIGHTHS OF THE SKYBKN 4,400 FTBROKEN, 5 TO 7 EIGHTHS OF THE SKYFEW 2,800 FTA FEW CLOUDS, 1 TO 2 EIGHTHS OF THE SKYCEILING 4,400 FTVISIBILITY, MILES: 10 MI OR MORE0510TITLESt. Louis, the skySTATION REPORT · ASOS STLTYPESECTIONSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 1 of 6DATE2026-10-17IDSR-STL-1DRAWN AS linework on paperSOURCES FB-SKY-001, FB-SKY-017, FB-SKY-016, FB-SKY-018

The air

52.0 F with a dew point of 49.0 F, 89 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 2,800 ft.

Chart of the air at St. Louis: temperature 52.0 degrees Fahrenheit and dew point 49.0, 89 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 2,800 feet; height to scale.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT STLFIG. B THE AIR AT ST. LOUISTHE REPORTED TEMPERATURE AND DEW POINT, AND AIR LIFTED FROM THE STATION WITHOUT MIXING UNTIL IT SATURATES; HEIGHT ABOVE THE STATION TO SCALEFT ABOVE THE STATION01,0002,0003,0004,00040 F50 F60 FSATURATES 700 FT ABOVE THE STATION, AT 48.3 FLOWEST CLOUD REPORTED, FEW 2,800 FTTEMPERATURE 52.0 FDEW POINT 49.0 FSPREAD 3.0 FRELATIVE HUMIDITY 89 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, the airSTATION REPORT · ASOS STLTYPECHARTSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 2 of 6DATE2026-10-17IDSR-STL-2DRAWN AS linework on paperSOURCES FB-WAT-020, FB-WAT-002, FB-ENG-011, FB-ENG-005

The wind

From the north (350 degrees) at 13 mph: force 4, a moderate breeze on the Beaufort scale. The strongest gust today was 38 mph.

Plan of the wind at St. Louis, north up: blowing from 350 degrees, the north, at 13 miles an hour; beside it the Beaufort scale from calm to hurricane force, force 4, moderate breeze, marked.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT STLFIG. C THE WIND AT ST. LOUISPLAN, NORTH UP: THE WIND AS REPORTED, AND WHERE IT SITS ON THE BEAUFORT SCALENESWTHE STATIONFROM 350°BEAUFORT FORCELEAST WIND, MPH0CALM01LIGHT AIR12LIGHT BREEZE43GENTLE BREEZE84MODERATE BREEZE13NOW, 13 MPH5FRESH BREEZE196STRONG BREEZE257NEAR GALE328GALE399STRONG GALE4710STORM5511VIOLENT STORM6412HURRICANE FORCE73TITLESt. Louis, the windSTATION REPORT · ASOS STLTYPEPLAN north upSCALENOT TO SCALEREVAS REPORTED SHEET 3 of 6DATE2026-10-17IDSR-STL-3DRAWN AS linework on paperSOURCES FB-EVT-150, FB-ENG-008, FB-INS-002

The full report of St. Louis, 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 Maryland Heights

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

Near Maryland Heights

River and lake gauges