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Louisville/Jefferson County, Kentucky

City in Jefferson County, Kentucky

Air quality

The air at Louisville/Jefferson County

Index 60, moderate, led by fine particles. Read at 11 PM from its reporting area, Louisville (KY), 2 miles off.

60Moderate
  • Fine particles (PM2.5)60Moderate3.7 mi
  • Ozone28Good23 ppb4.7 mi
  • Coarse particles (PM10)42Good3.7 mi
  • Nitrogen dioxide24Good25.3 ppb3.7 mi
  • Sulfur dioxide4Good3 ppb4.7 mi
  • Carbon monoxide-0.3 ppm3.7 mi

The days ahead

Good each day through Fri Oct 16, led by fine particles. Yesterday measured 49, good.

Smoke, the next 46 hours

Little smoke near the ground through Sat 8 PM: the index from smoke stays at 11 or under.

FriSat

Precipitation

What has fallen at Louisville/Jefferson County

0.61 in in the last 24 hours, 1.15 in over the last 3 days, to Thu 10 PM. Measured by radar and rain gauges, as water.

Last 24 hours
0.61in
Last 3 days
1.15in

Visibility

How far you can see at Louisville/Jefferson County, the next 46 hours

Visibility stays 8 miles or more through Sat 8 PM, lowest 9 miles Fri 6 AM.

FriSat

On the radar over Louisville/Jefferson County, KentuckyReflectivityStorm topsRain rateRain, last 24 hoursForecast temperatureForecast rain totalEvery picture

What is measuring near here

The 6 instruments nearest Louisville/Jefferson County, how far away each one is, how high it stands, and what kind of measurement it makes. The nearest is 2.1 miles away.

measured now4 instruments

US-31 at mile 7.305_31_007.3

Beside a road/12.5 mi away/-/- ft from here

temp, pavement temp, wind, visibility, precip

Rank-

measured daily2 instruments

Poplar Hills 0.5 SWKY-JF-102

In a volunteer observer's own ground/2.1 mi away/465 ft/8 ft below here

precip, snowfall, snow depth

Rank-

Louisville KyLMK

At a cooperative observer's station/3.2 mi away/653 ft/180 ft above here

snowfall, snow depth, precip, high, low

Rank20of 692

Station report

The weather at Louisville Intl, drawn

The nearest airport reporting now, 3.8 mi from Louisville/Jefferson County, Kentucky. From its report of Oct 15, 2026, 10:56 PM local time: 3 of its 6 sheets.

The sky

Broken at 16,000 ft; the ceiling is 16,000 ft; visibility 10 mi or more.

Section of the sky over Louisville Intl, height above the station to scale: broken cloud with its base at 16,000 feet, the ceiling at 16,000 feet, and visibility of 10 mi or more.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT SDFFIG. A THE SKY OVER LOUISVILLE INTLSECTION, 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 STATION05,00010,00015,00020,00025,000ETAGESLOWMIDDLEHIGHTHE STATIONTHE CEILOMETER READS TO 12,000 FTBKN 16,000 FTBROKEN, 5 TO 7 EIGHTHS OF THE SKYCEILING 16,000 FTVISIBILITY, MILES: 10 MI OR MORE0510TITLELouisville Intl, the skySTATION REPORT · ASOS SDFTYPESECTIONSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 1 of 6DATE2026-10-16IDSR-SDF-1DRAWN AS linework on paperSOURCES FB-SKY-001, FB-SKY-013, FB-SKY-014

The air

77.0 F with a dew point of 62.0 F, 60 per cent relative humidity. Air lifted from the station would cool to its dew point, where cloud forms, about 3,500 ft up; the lowest cloud reported is at 16,000 ft.

Chart of the air at Louisville Intl: temperature 77.0 degrees Fahrenheit and dew point 62.0, 60 per cent relative humidity; air lifted from the station cools along the dry rate and meets its dew point about 3,500 feet above the station, against the lowest cloud reported at 16,000 feet; height to scale.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT SDFFIG. B THE AIR AT LOUISVILLE INTLTHE REPORTED TEMPERATURE AND DEW POINT, AND AIR LIFTED FROM THE STATION WITHOUT MIXING UNTIL IT SATURATES; HEIGHT ABOVE THE STATION TO SCALEFT ABOVE THE STATION02,0004,0006,0008,00010,00012,00050 F60 F70 F80 F90 FSATURATES 3,500 FT ABOVE THE STATION, AT 58.5 FABOVE THIS SHEET: LOWEST CLOUD REPORTED, BKN 16,000 FTTEMPERATURE 77.0 FDEW POINT 62.0 FSPREAD 15.0 FRELATIVE HUMIDITY 60 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 POINTTITLELouisville Intl, the airSTATION REPORT · ASOS SDFTYPECHARTSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 2 of 6DATE2026-10-16IDSR-SDF-2DRAWN AS linework on paperSOURCES FB-WAT-002, FB-ENG-011, FB-ENG-005

The wind

From the south southwest (200 degrees) at 8 mph: force 3, a gentle breeze on the Beaufort scale.

Plan of the wind at Louisville Intl, north up: blowing from 200 degrees, the south southwest, at 8 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 SDFFIG. C THE WIND AT LOUISVILLE INTLPLAN, NORTH UP: THE WIND AS REPORTED, AND WHERE IT SITS ON THE BEAUFORT SCALENESWTHE STATIONFROM 200°BEAUFORT FORCELEAST WIND, MPH0CALM01LIGHT AIR12LIGHT BREEZE43GENTLE BREEZE8NOW, 8 MPH4MODERATE BREEZE135FRESH BREEZE196STRONG BREEZE257NEAR GALE328GALE399STRONG GALE4710STORM5511VIOLENT STORM6412HURRICANE FORCE73TITLELouisville Intl, the windSTATION REPORT · ASOS SDFTYPEPLAN north upSCALENOT TO SCALEREVAS REPORTED SHEET 3 of 6DATE2026-10-16IDSR-SDF-3DRAWN AS linework on paperSOURCES FB-EVT-150, FB-ENG-008, FB-INS-002

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

0in

Snow on the ground

Measured at Louisville Ky (LMK), 3.2 miles from here, read 15 Oct, 14:00. measured daily

Elsewhere in Kentucky

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

Near Louisville/Jefferson County

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

Near Louisville/Jefferson County

River and lake gauges