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Lenexa, Kansas

City in Johnson County, Kansas

Air quality

The air at Lenexa

Index 19, good, led by ozone. Read at 10 PM from its reporting area, Kansas City (MO), 15 miles off.

19Good
  • Fine particles (PM2.5)16Good9.1 mi
  • Ozone19Good20 ppb9.1 mi
  • Coarse particles (PM10)13Good9.1 mi
  • Nitrogen dioxide1Good1.6 ppb12.2 mi
  • Sulfur dioxide0Good0.4 ppb12.2 mi

The days ahead

Good each day through Fri Oct 16, led by ozone. Yesterday measured 41, good.

Smoke, the next 45 hours

No smoke near the ground through Sat 7 PM.

FriSat

Precipitation

What has fallen at Lenexa

0.36 in in the last 24 hours, 1.60 in over the last 3 days, to Thu 10 PM. Measured by radar and rain gauges, as water.

Last 24 hours
0.36in
Last 3 days
1.60in

Visibility

How far you can see at Lenexa, the next 45 hours

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

FriSat

On the radar over Lenexa, KansasReflectivityStorm topsRain rateRain, last 24 hoursForecast temperatureForecast rain totalEvery picture

What is measuring near here

The 7 instruments nearest Lenexa, 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 now5 instruments

Olathe (OJC)OJC

At an airfield/8.4 mi away/1,096 ft/74 ft above here

temp, wind, gust, visibility, precip, pressure

Rank4of 1,079

Ku-Nesa ScanKUNK1

At a river or reservoir gauge/23.6 mi away/1,102 ft/80 ft above here

temp, wind, gust, humidity, pressure

Rank719of 1,079

Ku-NesaS2147

At a soil climate station/23.6 mi away/1,102 ft/80 ft above here

temp, humidity, soil temp, soil moisture

Rank786of 1,079

measured daily2 instruments

Lenexa 1.3 ENEKS-JO-131

In a volunteer observer's own ground/0.2 mi away/1,043 ft/21 ft above here

precip, snowfall, snow depth

Rank-

Stanley 3SSLYK1

At a cooperative observer's station/12.5 mi away/1,020 ft/2 ft below here

snowfall, snow depth, precip, high, low

Rank122of 1,079

Station report

The weather at Olathe (OJC), drawn

The nearest airport reporting now, 8.4 mi from Lenexa, Kansas. From its report of Oct 15, 2026, 9:53 PM local time: 3 of its 6 sheets.

The sky

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

Section of the sky over Olathe (OJC), height above the station to scale: broken cloud with its base at 2,500 feet, the ceiling at 2,500 feet, and visibility of 10 mi or more.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT OJCFIG. A THE SKY OVER OLATHE (OJC)SECTION, 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 STATION05001,0001,5002,0002,5003,0003,5004,000ETAGESLOWTHE STATIONTHE CEILOMETER READS TO 12,000 FT, ABOVE THIS SHEETBKN 2,500 FTBROKEN, 5 TO 7 EIGHTHS OF THE SKYCEILING 2,500 FTVISIBILITY, MILES: 10 MI OR MORE0510TITLEOlathe (OJC), the skySTATION REPORT · ASOS OJCTYPESECTIONSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 1 of 6DATE2026-10-16IDSR-OJC-1DRAWN AS linework on paperSOURCES FB-SKY-001, FB-SKY-017, FB-SKY-016, FB-SKY-018

The air

55.0 F with a dew point of 48.0 F, 77 per cent relative humidity. Air lifted from the station would cool to its dew point, where cloud forms, about 1,600 ft up; the lowest cloud reported is at 2,500 ft.

Chart of the air at Olathe (OJC): temperature 55.0 degrees Fahrenheit and dew point 48.0, 77 per cent relative humidity; air lifted from the station cools along the dry rate and meets its dew point about 1,600 feet above the station, against the lowest cloud reported at 2,500 feet; height to scale.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT OJCFIG. B THE AIR AT OLATHE (OJC)THE 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 F70 FSATURATES 1,600 FT ABOVE THE STATION, AT 46.4 FLOWEST CLOUD REPORTED, BKN 2,500 FTTEMPERATURE 55.0 FDEW POINT 48.0 FSPREAD 7.0 FRELATIVE HUMIDITY 77 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 POINTTITLEOlathe (OJC), the airSTATION REPORT · ASOS OJCTYPECHARTSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 2 of 6DATE2026-10-16IDSR-OJC-2DRAWN AS linework on paperSOURCES FB-WAT-002, FB-ENG-011, FB-ENG-005

The wind

From the north northwest (340 degrees) at 15 mph, gusting 23 mph: force 4, a moderate breeze on the Beaufort scale. The strongest gust today was 32 mph.

Plan of the wind at Olathe (OJC), north up: blowing from 340 degrees, the north 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 OJCFIG. C THE WIND AT OLATHE (OJC)PLAN, NORTH UP: THE WIND AS REPORTED, AND WHERE IT SITS ON THE BEAUFORT SCALENESWTHE STATIONFROM 340°BEAUFORT FORCELEAST WIND, MPH0CALM01LIGHT AIR12LIGHT BREEZE43GENTLE BREEZE84MODERATE BREEZE13NOW, 15 MPH5FRESH BREEZE19GUST, 23 MPH6STRONG BREEZE257NEAR GALE328GALE399STRONG GALE4710STORM5511VIOLENT STORM6412HURRICANE FORCE73TITLEOlathe (OJC), the windSTATION REPORT · ASOS OJCTYPEPLAN north upSCALENOT TO SCALEREVAS REPORTED SHEET 3 of 6DATE2026-10-16IDSR-OJC-3DRAWN AS linework on paperSOURCES FB-EVT-150, FB-ENG-008, FB-INS-002

The full report of Olathe (OJC), in 6 sheets, each beside the Field Book plates that explain it

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Snow on the ground

Elsewhere in Kansas

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

Near Lenexa

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

Near Lenexa

River and lake gauges