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Heathrow, Florida

Community in Seminole County, Florida

Air quality

The air at Heathrow

Index 19, good, led by fine particles. Read at 6 AM from its reporting area, Seminole County (FL), 9 miles off.

19Good
  • Fine particles (PM2.5)19Good-
  • Ozone10Good-
  • Coarse particles (PM10)10Good-

The days ahead

Good each day through Tue Oct 20, led by ozone. Yesterday measured 34, good.

Smoke, the next 44 hours

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

SatSun

Precipitation

What has fallen at Heathrow

1.05 in in the last 24 hours, and none in the 2 days before, to Sat 6 AM. Measured by radar and rain gauges, as water.

Last 24 hours
1.05in
Last 3 days
1.05in

Visibility

How far you can see at Heathrow, the next 44 hours

Visibility stays 5 miles or more through Mon 2 AM, lowest 5 miles Sat 3 PM.

SatSun

On the radar over Heathrow, FloridaReflectivityStorm topsRain rateRain, last 24 hoursForecast temperatureForecast rain totalEvery picture

What is measuring near here

The 6 instruments nearest Heathrow, how far away each one is, how high it stands, and what kind of measurement it makes. The nearest is 1.7 miles away.

measured now4 instruments

measured daily2 instruments

Lake Mary 0.5 NWFL-SM-42

In a volunteer observer's own ground/1.7 mi away/50 ft/5 ft below here

precip, snowfall, snow depth

Rank-

SanfordSFNF1

At a cooperative observer's station/6.4 mi away/59 ft/4 ft above here

snowfall, snow depth, precip, high, low

Rank1,807of 2,300

Station report

The weather at Sanford/Orlando, drawn

The nearest airport reporting now, 7.6 mi from Heathrow, Florida. From its report of Oct 17, 2026, 6:53 AM local time: 3 of its 6 sheets.

The sky

No cloud below 12,000 ft; visibility 10 mi or more.

Section of the sky over Sanford/Orlando, height above the station to scale: no cloud detected below 12,000 feet, the reach of its ceilometer, and visibility of 10 mi or more.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT SFBFIG. A THE SKY OVER SANFORD/ORLANDOSECTION, 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 SHEETNO CLOUD DETECTED BELOW 12,000 FTVISIBILITY, MILES: 10 MI OR MORE0510TITLESanford/Orlando, the skySTATION REPORT · ASOS SFBTYPESECTIONSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 1 of 6DATE2026-10-17IDSR-SFB-1DRAWN AS linework on paperSOURCES FB-SKY-001

The air

74.0 F with a dew point of 73.0 F, 97 per cent relative humidity. Air lifted from the station would cool to its dew point, where cloud forms, about 200 ft up.

Chart of the air at Sanford/Orlando: temperature 74.0 degrees Fahrenheit and dew point 73.0, 97 per cent relative humidity; air lifted from the station cools along the dry rate and meets its dew point about 200 feet above the station; height to scale.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT SFBFIG. B THE AIR AT SANFORD/ORLANDOTHE REPORTED TEMPERATURE AND DEW POINT, AND AIR LIFTED FROM THE STATION WITHOUT MIXING UNTIL IT SATURATES; HEIGHT ABOVE THE STATION TO SCALEFT ABOVE THE STATION01,0002,0003,00060 F70 F80 FSATURATES 200 FT ABOVE THE STATION, AT 72.7 FTEMPERATURE AND DEW POINT 74.0 F, 73.0 FRELATIVE HUMIDITY 97 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 POINTTITLESanford/Orlando, the airSTATION REPORT · ASOS SFBTYPECHARTSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 2 of 6DATE2026-10-17IDSR-SFB-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 7 mph: force 2, a light breeze on the Beaufort scale.

Plan of the wind at Sanford/Orlando, north up: blowing from 290 degrees, the west northwest, at 7 miles an hour; beside it the Beaufort scale from calm to hurricane force, force 2, light breeze, marked.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT SFBFIG. C THE WIND AT SANFORD/ORLANDOPLAN, NORTH UP: THE WIND AS REPORTED, AND WHERE IT SITS ON THE BEAUFORT SCALENESWTHE STATIONFROM 290°BEAUFORT FORCELEAST WIND, MPH0CALM01LIGHT AIR12LIGHT BREEZE4NOW, 7 MPH3GENTLE BREEZE84MODERATE BREEZE135FRESH BREEZE196STRONG BREEZE257NEAR GALE328GALE399STRONG GALE4710STORM5511VIOLENT STORM6412HURRICANE FORCE73TITLESanford/Orlando, the windSTATION REPORT · ASOS SFBTYPEPLAN north upSCALENOT TO SCALEREVAS REPORTED SHEET 3 of 6DATE2026-10-17IDSR-SFB-3DRAWN AS linework on paperSOURCES FB-EVT-150, FB-ENG-008, FB-INS-002

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

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Snow on the ground

Elsewhere in Florida

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

Near Heathrow

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

Near Heathrow

River and lake gauges