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London, Ohio

City in Madison County, Ohio

Air quality

The air at London

Index 54, moderate, led by fine particles. Read at 5 AM from its reporting area, Columbus (OH), 25 miles off.

54Moderate
  • Fine particles (PM2.5)54Moderate-
  • Ozone22Good-
  • Coarse particles (PM10)19Good-

The days ahead

Good each day through Tue Oct 20, led by fine particles. Yesterday measured 47, good.

Smoke, the next 46 hours

Little smoke near the ground through Sun 2 AM: the index from smoke stays at 6 or under.

FriSat

Precipitation

What has fallen at London

0.02 in in the last 24 hours, 0.16 in over the last 3 days, to Fri 4 AM. Measured by radar and rain gauges, as water.

Last 24 hours
0.02in
Last 3 days
0.16in

Visibility

How far you can see at London, the next 46 hours

Visibility stays 5 miles or more through Sun 2 AM, lowest 6 miles Fri 4 PM.

FriSat

On the radar over London, OhioReflectivityStorm topsRain rateRain, last 24 hoursForecast temperatureForecast rain totalEvery picture

What is measuring near here

The 7 instruments nearest London, how far away each one is, how high it stands, and what kind of measurement it makes. The nearest is 0.6 miles away.

measured now5 instruments

LondonUYF

At an airfield/3.1 mi away/1,051 ft/3 ft below here

temp, wind, gust, visibility, precip, pressure

Rank792of 1,590

measured daily2 instruments

LondonLNDO1

At a cooperative observer's station/0.6 mi away/1,047 ft/7 ft below here

snowfall, snow depth, precip, high, low

Rank749of 1,590

London 1.2 NOH-MA-9

In a volunteer observer's own ground/1.1 mi away/1,042 ft/12 ft below here

precip, snowfall, snow depth

Rank711of 1,590

Station report

The weather at London, drawn

The nearest airport reporting now, 3.1 mi from London, Ohio. From its report of Oct 16, 2026, 5:35 AM local time: 3 of its 6 sheets.

The sky

Scattered at 3,500 ft, broken at 4,600 ft, broken at 5,500 ft; the ceiling is 4,600 ft; visibility 10 mi or more.

Section of the sky over London, height above the station to scale: scattered cloud with its base at 3,500 feet, broken cloud with its base at 4,600 feet, broken cloud with its base at 5,500 feet, the ceiling at 4,600 feet, and visibility of 10 mi or more.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT UYFFIG. A THE SKY OVER LONDONSECTION, 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 STATION02,5005,0007,50010,000ETAGESLOWMIDDLETHE STATIONTHE CEILOMETER READS TO 12,000 FT, ABOVE THIS SHEETBKN 5,500 FTBROKEN, 5 TO 7 EIGHTHS OF THE SKYBKN 4,600 FTBROKEN, 5 TO 7 EIGHTHS OF THE SKYSCT 3,500 FTSCATTERED, 3 TO 4 EIGHTHS OF THE SKYCEILING 4,600 FTVISIBILITY, MILES: 10 MI OR MORE0510TITLELondon, the skySTATION REPORT · ASOS UYFTYPESECTIONSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 1 of 6DATE2026-10-16IDSR-UYF-1DRAWN AS linework on paperSOURCES FB-SKY-001, FB-SKY-017, FB-SKY-016, FB-SKY-018

The air

69.8 F with a dew point of 64.4 F, 83 per cent relative humidity. Air lifted from the station would cool to its dew point, where cloud forms, about 1,300 ft up; the lowest cloud reported is at 3,500 ft.

Chart of the air at London: temperature 69.8 degrees Fahrenheit and dew point 64.4, 83 per cent relative humidity; air lifted from the station cools along the dry rate and meets its dew point about 1,300 feet above the station, against the lowest cloud reported at 3,500 feet; height to scale.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT UYFFIG. B THE AIR AT LONDONTHE 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 1,300 FT ABOVE THE STATION, AT 63.1 FLOWEST CLOUD REPORTED, SCT 3,500 FTTEMPERATURE 69.8 FDEW POINT 64.4 FSPREAD 5.4 FRELATIVE HUMIDITY 83 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 POINTTITLELondon, the airSTATION REPORT · ASOS UYFTYPECHARTSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 2 of 6DATE2026-10-16IDSR-UYF-2DRAWN AS linework on paperSOURCES FB-WAT-002, FB-ENG-011, FB-ENG-005

The wind

From the west southwest (240 degrees) at 13 mph, gusting 22 mph: force 4, a moderate breeze on the Beaufort scale. The strongest gust today was 22 mph.

Plan of the wind at London, north up: blowing from 240 degrees, the west southwest, at 13 miles an hour, gusting 22; beside it the Beaufort scale from calm to hurricane force, force 4, moderate breeze, marked.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT UYFFIG. C THE WIND AT LONDONPLAN, NORTH UP: THE WIND AS REPORTED, AND WHERE IT SITS ON THE BEAUFORT SCALENESWTHE STATIONFROM 240°BEAUFORT FORCELEAST WIND, MPH0CALM01LIGHT AIR12LIGHT BREEZE43GENTLE BREEZE84MODERATE BREEZE13NOW, 13 MPH5FRESH BREEZE19GUST, 22 MPH6STRONG BREEZE257NEAR GALE328GALE399STRONG GALE4710STORM5511VIOLENT STORM6412HURRICANE FORCE73TITLELondon, the windSTATION REPORT · ASOS UYFTYPEPLAN north upSCALENOT TO SCALEREVAS REPORTED SHEET 3 of 6DATE2026-10-16IDSR-UYF-3DRAWN AS linework on paperSOURCES FB-EVT-150, FB-ENG-008, FB-INS-002

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

0in

Snow on the ground

Measured at London (LNDO1), 0.6 miles from here, read 15 Oct, 08:00. measured daily

Elsewhere in Ohio

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

Near London

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

Near London

River and lake gauges