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Loudon, New Hampshire

Community in Merrimack County, New Hampshire

Air quality

The air at Loudon

Index 13, good, led by fine particles. Read at 12 AM from its reporting area, Belknap County (NH), 17 miles off.

13Good
  • Fine particles (PM2.5)13Good-
  • Sulfur dioxide1Good1 ppb10.2 mi

The days ahead

Good each day through Today, led by fine particles. Yesterday measured 8, good.

Smoke, the next 44 hours

No smoke near the ground through Sat 8 PM.

FriSat

Precipitation

What has fallen at Loudon

None in the last 24 hours; 0.64 in over the last 3 days, to Fri 12 AM. Measured by radar and rain gauges, as water.

Last 24 hours
0.00in
Last 3 days
0.64in

Visibility

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

Mist or haze: visibility falls to 2 miles Fri 10 AM.

FriSat

On the radar over Loudon, New HampshireReflectivityStorm topsRain rateRain, last 24 hoursForecast temperatureForecast rain totalEvery picture

What is measuring near here

The 7 instruments nearest Loudon, how far away each one is, how high it stands, and what kind of measurement it makes. The nearest is 0.2 miles away.

measured now5 instruments

93 N Bow007NH

Beside a road/8.3 mi away/348 ft/30 ft below here

temp, pavement temp, wind, visibility, precip

Rank330of 385

Durham 2 N54794

At a climate reference station/28.8 mi away/119 ft/259 ft below here

temp, humidity, wind, solar, precip

Rank206of 385

measured daily2 instruments

Loudon 0.5 SSWNH-MR-58

In a volunteer observer's own ground/0.2 mi away/363 ft/15 ft below here

precip, snowfall, snow depth

Rank-

Station report

The weather at Concord Municipal, drawn

The nearest airport reporting now, 6.1 mi from Loudon, New Hampshire. From its report of Oct 15, 2026, 11:51 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 Concord Municipal, 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 CONFIG. A THE SKY OVER CONCORD MUNICIPALSECTION, 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 MORE0510TITLEConcord Municipal, the skySTATION REPORT · ASOS CONTYPESECTIONSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 1 of 6DATE2026-10-16IDSR-CON-1DRAWN AS linework on paperSOURCES FB-SKY-001

The air

40.0 F with a dew point of 37.0 F, 89 per cent relative humidity. Air lifted from the station would cool to its dew point, where cloud forms, about 700 ft up.

Chart of the air at Concord Municipal: temperature 40.0 degrees Fahrenheit and dew point 37.0, 89 per cent relative humidity; air lifted from the station cools along the dry rate and meets its dew point about 700 feet above the station; height to scale.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT CONFIG. B THE AIR AT CONCORD MUNICIPALTHE REPORTED TEMPERATURE AND DEW POINT, AND AIR LIFTED FROM THE STATION WITHOUT MIXING UNTIL IT SATURATES; HEIGHT ABOVE THE STATION TO SCALEFT ABOVE THE STATION01,0002,0003,00030 F40 F50 FSATURATES 700 FT ABOVE THE STATION, AT 36.3 FTEMPERATURE 40.0 FDEW POINT 37.0 FSPREAD 3.0 FRELATIVE HUMIDITY 89 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 POINTTITLEConcord Municipal, the airSTATION REPORT · ASOS CONTYPECHARTSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 2 of 6DATE2026-10-16IDSR-CON-2DRAWN AS linework on paperSOURCES FB-WAT-020, FB-WAT-002, FB-ENG-011, FB-ENG-005

The wind

Calm.

Plan of the wind at Concord Municipal, north up: calm; beside it the Beaufort scale from calm to hurricane force, force 0, calm, marked.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT CONFIG. C THE WIND AT CONCORD MUNICIPALPLAN, NORTH UP: THE WIND AS REPORTED, AND WHERE IT SITS ON THE BEAUFORT SCALENESWTHE STATIONCALMBEAUFORT FORCELEAST WIND, MPH0CALM0NOW, 0 MPH1LIGHT AIR12LIGHT BREEZE43GENTLE BREEZE84MODERATE BREEZE135FRESH BREEZE196STRONG BREEZE257NEAR GALE328GALE399STRONG GALE4710STORM5511VIOLENT STORM6412HURRICANE FORCE73TITLEConcord Municipal, the windSTATION REPORT · ASOS CONTYPEPLAN north upSCALENOT TO SCALEREVAS REPORTED SHEET 3 of 6DATE2026-10-16IDSR-CON-3DRAWN AS linework on paperSOURCES FB-EVT-150, FB-ENG-008, FB-INS-002

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

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Snow on the ground

Elsewhere in New Hampshire

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

Near Loudon

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

Near Loudon

River and lake gauges