Storm Station
Sign in

Northwood, Iowa

City in Worth County, Iowa

Air quality

The air at Northwood

Index 24, good, led by ozone. Read at 8 PM from its reporting area, Rochester Area (MN), 54 miles off.

24Good
  • Fine particles (PM2.5)9Good-
  • Ozone24Good-

The days ahead

Good each day through Wed Oct 21, led by fine particles. Yesterday measured 19, good.

Smoke, the next 42 hours

No smoke near the ground through Sun 1 PM.

FriSatSun

Precipitation

What has fallen at Northwood

0.05 in in the last 24 hours, 1.10 in over the last 3 days, to Fri 7 PM. Measured by radar and rain gauges, as water.

Last 24 hours
0.05in
Last 3 days
1.10in

Visibility

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

Visibility stays 7 miles or more through Sun 1 PM, lowest 8 miles Sat 3 AM.

FriSatSun

On the radar over Northwood, IowaReflectivityStorm topsRain rateRain, last 24 hoursForecast temperatureForecast rain totalEvery picture

What is measuring near here

The 5 instruments nearest Northwood, how far away each one is, how high it stands, and what kind of measurement it makes. The nearest is 0.3 miles away.

measured now3 instruments

Mason CityMCW

At an airfield/20.9 mi away/1,214 ft/16 ft below here

temp, wind, gust, visibility, precip, pressure

Rank15of 1,055

measured daily2 instruments

NorthwoodNWDI4

At a cooperative observer's station/0.3 mi away/1,220 ft/10 ft below here

snowfall, snow depth, precip, high, low

Rank-

Grafton 0.4 SEIA-WT-1

In a volunteer observer's own ground/11.4 mi away/1,227 ft/3 ft below here

precip, snowfall, snow depth

Rank-

Station report

The weather at Mason City, drawn

The nearest airport reporting now, 20.9 mi from Northwood, Iowa. From its report of Oct 16, 2026, 7:53 PM 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 Mason City, 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 MCWFIG. A THE SKY OVER MASON CITYSECTION, 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 MORE0510TITLEMason City, the skySTATION REPORT · ASOS MCWTYPESECTIONSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 1 of 6DATE2026-10-17IDSR-MCW-1DRAWN AS linework on paperSOURCES FB-SKY-001

The air

40.0 F with a dew point of 31.0 F, 70 per cent relative humidity. Air lifted from the station would cool to its dew point, where cloud forms, about 2,000 ft up.

Chart of the air at Mason City: temperature 40.0 degrees Fahrenheit and dew point 31.0, 70 per cent relative humidity; air lifted from the station cools along the dry rate and meets its dew point about 2,000 feet above the station; height to scale.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT MCWFIG. B THE AIR AT MASON CITYTHE REPORTED TEMPERATURE AND DEW POINT, AND AIR LIFTED FROM THE STATION WITHOUT MIXING UNTIL IT SATURATES; HEIGHT ABOVE THE STATION TO SCALEFT ABOVE THE STATION01,0002,0003,00020 F30 F40 F50 FSATURATES 2,000 FT ABOVE THE STATION, AT 29.1 FTEMPERATURE 40.0 FDEW POINT 31.0 FSPREAD 9.0 FRELATIVE HUMIDITY 70 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 POINTTITLEMason City, the airSTATION REPORT · ASOS MCWTYPECHARTSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 2 of 6DATE2026-10-17IDSR-MCW-2DRAWN AS linework on paperSOURCES FB-WAT-002, FB-ENG-011, FB-ENG-005

The wind

From the north northwest (330 degrees) at 9 mph: force 3, a gentle breeze on the Beaufort scale. The strongest gust today was 41 mph.

Plan of the wind at Mason City, north up: blowing from 330 degrees, the north northwest, at 9 miles an hour; beside it the Beaufort scale from calm to hurricane force, force 3, gentle breeze, marked.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT MCWFIG. C THE WIND AT MASON CITYPLAN, NORTH UP: THE WIND AS REPORTED, AND WHERE IT SITS ON THE BEAUFORT SCALENESWTHE STATIONFROM 330°BEAUFORT FORCELEAST WIND, MPH0CALM01LIGHT AIR12LIGHT BREEZE43GENTLE BREEZE8NOW, 9 MPH4MODERATE BREEZE135FRESH BREEZE196STRONG BREEZE257NEAR GALE328GALE399STRONG GALE4710STORM5511VIOLENT STORM6412HURRICANE FORCE73TITLEMason City, the windSTATION REPORT · ASOS MCWTYPEPLAN north upSCALENOT TO SCALEREVAS REPORTED SHEET 3 of 6DATE2026-10-17IDSR-MCW-3DRAWN AS linework on paperSOURCES FB-EVT-150, FB-ENG-008, FB-INS-002

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

-

Snow on the ground

Elsewhere in Iowa

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

Near Northwood

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

Near Northwood

River and lake gauges