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Ottawa, Ohio

Village in Putnam County, Ohio

Air quality

The air at Ottawa

Index 58, moderate, led by fine particles. Read at 2 AM from its reporting area, Lima (OH), 17 miles off.

58Moderate
  • Fine particles (PM2.5)58Moderate-
  • Ozone17Good-

The days ahead

Yesterday measured 54, moderate.

Smoke, the next 42 hours

No smoke near the ground through Sat 8 PM.

FriSat

Precipitation

What has fallen at Ottawa

0.04 in in the last 24 hours, 0.30 in over the last 3 days, to Fri 2 AM. Measured by radar and rain gauges, as water.

Last 24 hours
0.04in
Last 3 days
0.30in

Visibility

How far you can see at Ottawa, the next 42 hours

Mist or haze: visibility falls to 2 miles Fri 5 PM.

FriSat

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

What is measuring near here

The 6 instruments nearest Ottawa, how far away each one is, how high it stands, and what kind of measurement it makes. The nearest is 0.8 miles away.

measured now4 instruments

OttawaOWX

At an airfield/3.1 mi away/752 ft/21 ft above here

temp, wind, gust, visibility, precip, pressure

Rank291of 1,590

measured daily2 instruments

OttawaOTTO1

At a cooperative observer's station/0.8 mi away/728 ft/3 ft below here

snowfall, snow depth, precip, high, low

Rank-

Ottawa 1.0 NOH-PN-10

In a volunteer observer's own ground/0.9 mi away/740 ft/9 ft above here

precip, snowfall, snow depth

Rank29of 1,590

Station report

The weather at Ottawa, drawn

The nearest airport reporting now, 3.1 mi from Ottawa, Ohio. From its report of Oct 16, 2026, 2:35 AM local time: 3 of its 6 sheets.

The sky

Broken at 1,700 ft, broken at 2,500 ft, overcast at 11,000 ft; the ceiling is 1,700 ft; visibility 10 mi or more.

Section of the sky over Ottawa, height above the station to scale: broken cloud with its base at 1,700 feet, broken cloud with its base at 2,500 feet, overcast cloud with its base at 11,000 feet, the ceiling at 1,700 feet, and visibility of 10 mi or more.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT OWXFIG. A THE SKY OVER OTTAWASECTION, 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 STATION02,5005,0007,50010,00012,50015,00017,500ETAGESLOWMIDDLEHIGHTHE STATIONTHE CEILOMETER READS TO 12,000 FTOVC 11,000 FTOVERCAST, 8 EIGHTHS OF THE SKYBKN 2,500 FTBROKEN, 5 TO 7 EIGHTHS OF THE SKYBKN 1,700 FTBROKEN, 5 TO 7 EIGHTHS OF THE SKYCEILING 1,700 FTVISIBILITY, MILES: 10 MI OR MORE0510TITLEOttawa, the skySTATION REPORT · ASOS OWXTYPESECTIONSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 1 of 6DATE2026-10-16IDSR-OWX-1DRAWN AS linework on paperSOURCES FB-SKY-001, FB-SKY-017, FB-SKY-016, FB-SKY-018, FB-SKY-013, FB-SKY-014

The air

73.4 F with a dew point of 71.6 F, 94 per cent relative humidity. Air lifted from the station would cool to its dew point, where cloud forms, about 400 ft up; the lowest cloud reported is at 1,700 ft.

Chart of the air at Ottawa: temperature 73.4 degrees Fahrenheit and dew point 71.6, 94 per cent relative humidity; air lifted from the station cools along the dry rate and meets its dew point about 400 feet above the station, against the lowest cloud reported at 1,700 feet; height to scale.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT OWXFIG. B THE AIR AT OTTAWATHE 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 400 FT ABOVE THE STATION, AT 71.1 FLOWEST CLOUD REPORTED, BKN 1,700 FTTEMPERATURE AND DEW POINT 73.4 F, 71.6 FRELATIVE HUMIDITY 94 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 POINTTITLEOttawa, the airSTATION REPORT · ASOS OWXTYPECHARTSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 2 of 6DATE2026-10-16IDSR-OWX-2DRAWN AS linework on paperSOURCES FB-WAT-020, FB-WAT-002, FB-ENG-011, FB-ENG-005

The wind

From the southwest (230 degrees) at 14 mph, gusting 23 mph: force 4, a moderate breeze on the Beaufort scale. The strongest gust today was 24 mph.

Plan of the wind at Ottawa, north up: blowing from 230 degrees, the southwest, at 14 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 OWXFIG. C THE WIND AT OTTAWAPLAN, NORTH UP: THE WIND AS REPORTED, AND WHERE IT SITS ON THE BEAUFORT SCALENESWTHE STATIONFROM 230°BEAUFORT FORCELEAST WIND, MPH0CALM01LIGHT AIR12LIGHT BREEZE43GENTLE BREEZE84MODERATE BREEZE13NOW, 14 MPH5FRESH BREEZE19GUST, 23 MPH6STRONG BREEZE257NEAR GALE328GALE399STRONG GALE4710STORM5511VIOLENT STORM6412HURRICANE FORCE73TITLEOttawa, the windSTATION REPORT · ASOS OWXTYPEPLAN north upSCALENOT TO SCALEREVAS REPORTED SHEET 3 of 6DATE2026-10-16IDSR-OWX-3DRAWN AS linework on paperSOURCES FB-EVT-150, FB-ENG-008, FB-INS-002

The full report of Ottawa, 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 Ottawa

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

Near Ottawa

River and lake gauges