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Jefferson, Ohio

Village in Ashtabula County, Ohio

Air quality

The air at Jefferson

Index 18, good, led by ozone. Read at 12 AM from its reporting area, Youngstown (OH), 36 miles off.

18Good
  • Fine particles (PM2.5)11Good-
  • Ozone18Good-
  • Coarse particles (PM10)4Good-

The days ahead

Good each day through Wed Oct 21, led by fine particles. Yesterday measured 41, good.

Smoke, the next 45 hours

No smoke near the ground through Sun 8 PM.

SatSun

Precipitation

What has fallen at Jefferson

0.50 in in the last 24 hours, 0.57 in over the last 3 days, to Fri 11 PM. Measured by radar and rain gauges, as water.

Last 24 hours
0.50in
Last 3 days
0.57in

Visibility

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

Visibility stays 10 miles or more through Sun 8 PM.

SatSun

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

What is measuring near here

The 6 instruments nearest Jefferson, how far away each one is, how high it stands, and what kind of measurement it makes. The nearest is 2.4 miles away.

measured now4 instruments

AshtabulaHZY

At an airfield/4.8 mi away/906 ft/49 ft below here

temp, wind, gust, visibility, precip, pressure

Rank12of 1,605

measured daily2 instruments

Jefferson 2.3 ENEOH-AB-24

In a volunteer observer's own ground/2.4 mi away/924 ft/31 ft below here

precip, snowfall, snow depth

Rank-

ChardonCHRO1

At a cooperative observer's station/23.7 mi away/1,148 ft/193 ft above here

snowfall, snow depth, precip, high, low

Rank1,346of 1,605

Station report

The weather at Ashtabula, drawn

The nearest airport reporting now, 4.8 mi from Jefferson, Ohio. From its report of Oct 16, 2026, 11:53 PM local time: 3 of its 5 sheets.

The sky

Broken at 3,900 ft, broken at 4,700 ft; the ceiling is 3,900 ft; visibility 10 mi or more.

Section of the sky over Ashtabula, height above the station to scale: broken cloud with its base at 3,900 feet, broken cloud with its base at 4,700 feet, the ceiling at 3,900 feet, and visibility of 10 mi or more.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT HZYFIG. A THE SKY OVER ASHTABULASECTION, 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 STATION01,0002,0003,0004,0005,0006,0007,0008,000ETAGESLOWMIDDLETHE STATIONTHE CEILOMETER READS TO 12,000 FT, ABOVE THIS SHEETBKN 4,700 FTBROKEN, 5 TO 7 EIGHTHS OF THE SKYBKN 3,900 FTBROKEN, 5 TO 7 EIGHTHS OF THE SKYCEILING 3,900 FTVISIBILITY, MILES: 10 MI OR MORE0510TITLEAshtabula, the skySTATION REPORT · ASOS HZYTYPESECTIONSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 1 of 5DATE2026-10-17IDSR-HZY-1DRAWN AS linework on paperSOURCES FB-SKY-001, FB-SKY-017, FB-SKY-016, FB-SKY-018

The air

48.0 F with a dew point of 38.0 F, 68 per cent relative humidity. Air lifted from the station would cool to its dew point, where cloud forms, about 2,300 ft up; the lowest cloud reported is at 3,900 ft.

Chart of the air at Ashtabula: temperature 48.0 degrees Fahrenheit and dew point 38.0, 68 per cent relative humidity; air lifted from the station cools along the dry rate and meets its dew point about 2,300 feet above the station, against the lowest cloud reported at 3,900 feet; height to scale.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT HZYFIG. B THE AIR AT ASHTABULATHE REPORTED TEMPERATURE AND DEW POINT, AND AIR LIFTED FROM THE STATION WITHOUT MIXING UNTIL IT SATURATES; HEIGHT ABOVE THE STATION TO SCALEFT ABOVE THE STATION01,0002,0003,0004,0005,00020 F30 F40 F50 F60 FSATURATES 2,300 FT ABOVE THE STATION, AT 35.8 FLOWEST CLOUD REPORTED, BKN 3,900 FTTEMPERATURE 48.0 FDEW POINT 38.0 FSPREAD 10.0 FRELATIVE HUMIDITY 68 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 POINTTITLEAshtabula, the airSTATION REPORT · ASOS HZYTYPECHARTSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 2 of 5DATE2026-10-17IDSR-HZY-2DRAWN AS linework on paperSOURCES FB-WAT-002, FB-ENG-011, FB-ENG-005

The column

At 906 ft above sea level, 3 per cent of the atmosphere's air lies below the station. The standard atmosphere puts the pressure there at 28.95 inHg and the temperature at 55.8 F; the station's altimeter setting of 30.11 inHg means its barometer reads 29.14 inHg; it reports 48.0 F, 7.8 F colder than standard.

Section from sea level of where Ashtabula stands in the atmosphere, height to scale: the station 906 feet above sea level with 3 per cent of the air below it; the standard atmosphere's pressure there, 28.95 inches of mercury, and temperature, 55.8 degrees Fahrenheit; the altimeter setting of 30.11 and the station pressure it means, 29.14.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT HZYFIG. D WHERE ASHTABULA STANDS IN THE ATMOSPHERESECTION FROM SEA LEVEL, HEIGHT TO SCALE, THE STATION IN THE STANDARD ATMOSPHEREFT ABOVE SEA LEVEL05,00010,00015,000SEA LEVEL, 29.92 inHg IN THE STANDARD ATMOSPHEREASHTABULA3 PER CENT OF THE AIR BELOW IT906 FT10 PER CENT OF THE AIR BELOW, 2,890 FT20 PER CENT OF THE AIR BELOW, 6,050 FT30 PER CENT OF THE AIR BELOW, 9,540 FT40 PER CENT OF THE AIR BELOW, 13,470 FTSTANDARD PRESSURE HERE28.95 inHgSTANDARD TEMPERATURE HERE55.8 FALTIMETER SETTING, REPORTED30.11 inHgITS BAROMETER READS29.14 inHgTEMPERATURE, REPORTED48.0 FTITLEAshtabula, the columnSTATION REPORT · ASOS HZYTYPESECTIONSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 3 of 5DATE2026-10-17IDSR-HZY-3DRAWN AS linework on paperSOURCES FB-ENG-001, FB-ENG-003

The full report of Ashtabula, in 5 sheets, each beside the Field Book plates that explain it

0in

Snow on the ground

Measured at Chardon (CHRO1), 23.7 miles from here, read 16 Oct, 08:00. measured daily

Elsewhere in Ohio

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

Near Jefferson

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

Near Jefferson

River and lake gauges