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Troy, Ohio

City in Miami County, Ohio

Air quality

The air at Troy

Index 20, good, led by ozone. Read at 10 AM from its reporting area, Dayton (OH), 19 miles off.

20Good
  • Fine particles (PM2.5)8Good-
  • Ozone20Good-
  • Coarse particles (PM10)4Good-

The days ahead

Good each day through Tue Oct 20, led by ozone. Yesterday measured 25, good.

Smoke, the next 46 hours

No smoke near the ground through Mon 8 AM.

SatSunMon

Precipitation

What has fallen at Troy

0.17 in in the last 24 hours, 0.43 in over the last 3 days, to Sat 10 AM. Measured by radar and rain gauges, as water.

Last 24 hours
0.17in
Last 3 days
0.43in

Visibility

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

Visibility stays 8 miles or more through Mon 8 AM, lowest 9 miles Sun 8 AM.

SatSunMon

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

What is measuring near here

The 6 instruments nearest Troy, how far away each one is, how high it stands, and what kind of measurement it makes. The nearest is 0.9 miles away.

measured now4 instruments

DaytonDAY

At an airfield/9.4 mi away/1,001 ft/170 ft above here

temp, wind, gust, visibility, precip, pressure

Rank298of 1,605

measured daily2 instruments

Troy 0.7 SWOH-MM-4

In a volunteer observer's own ground/0.9 mi away/868 ft/37 ft above here

precip, snowfall, snow depth

Rank-

Piqua WWTPPQUO1

At a water treatment plant/6.1 mi away/797 ft/34 ft below here

snowfall, snow depth, precip, high, low

Rank-

Station report

The weather at Dayton, drawn

The nearest airport reporting now, 9.4 mi from Troy, Ohio. From its report of Oct 17, 2026, 9:56 AM local time: 3 of its 6 sheets.

The sky

A few clouds at 2,500 ft; visibility 10 mi or more.

Section of the sky over Dayton, height above the station to scale: a few clouds cloud with its base at 2,500 feet, and visibility of 10 mi or more.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT DAYFIG. A THE SKY OVER DAYTONSECTION, 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 SHEETFEW 2,500 FTA FEW CLOUDS, 1 TO 2 EIGHTHS OF THE SKYVISIBILITY, MILES: 10 MI OR MORE0510TITLEDayton, the skySTATION REPORT · ASOS DAYTYPESECTIONSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 1 of 6DATE2026-10-17IDSR-DAY-1DRAWN AS linework on paperSOURCES FB-SKY-001, FB-SKY-017, FB-SKY-016, FB-SKY-018

The air

42.0 F with a dew point of 35.0 F, 76 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 Dayton: temperature 42.0 degrees Fahrenheit and dew point 35.0, 76 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 DAYFIG. B THE AIR AT DAYTONTHE REPORTED TEMPERATURE AND DEW POINT, AND AIR LIFTED FROM THE STATION WITHOUT MIXING UNTIL IT SATURATES; HEIGHT ABOVE THE STATION TO SCALEFT ABOVE THE STATION01,0002,0003,0004,00020 F30 F40 F50 FSATURATES 1,600 FT ABOVE THE STATION, AT 33.5 FLOWEST CLOUD REPORTED, FEW 2,500 FTTEMPERATURE 42.0 FDEW POINT 35.0 FSPREAD 7.0 FRELATIVE HUMIDITY 76 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 POINTTITLEDayton, the airSTATION REPORT · ASOS DAYTYPECHARTSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 2 of 6DATE2026-10-17IDSR-DAY-2DRAWN AS linework on paperSOURCES FB-WAT-002, FB-ENG-011, FB-ENG-005

The wind

From the north northeast (20 degrees) at 15 mph: force 4, a moderate breeze on the Beaufort scale. The strongest gust today was 26 mph.

Plan of the wind at Dayton, north up: blowing from 20 degrees, the north northeast, at 15 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 DAYFIG. C THE WIND AT DAYTONPLAN, NORTH UP: THE WIND AS REPORTED, AND WHERE IT SITS ON THE BEAUFORT SCALENESWTHE STATIONFROM 20°BEAUFORT FORCELEAST WIND, MPH0CALM01LIGHT AIR12LIGHT BREEZE43GENTLE BREEZE84MODERATE BREEZE13NOW, 15 MPH5FRESH BREEZE196STRONG BREEZE257NEAR GALE328GALE399STRONG GALE4710STORM5511VIOLENT STORM6412HURRICANE FORCE73TITLEDayton, the windSTATION REPORT · ASOS DAYTYPEPLAN north upSCALENOT TO SCALEREVAS REPORTED SHEET 3 of 6DATE2026-10-17IDSR-DAY-3DRAWN AS linework on paperSOURCES FB-EVT-150, FB-ENG-008, FB-INS-002

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

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Snow on the ground

Elsewhere in Ohio

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

Near Troy

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

Near Troy

River and lake gauges