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East Merrimack, New Hampshire

Community in Hillsborough County, New Hampshire

Air quality

The air at East Merrimack

Index 33, good, led by ozone. Read at 11 PM from its reporting area, Hillsborough County (NH), 12 miles off.

33Good
  • Fine particles (PM2.5)8Good-
  • Ozone33Good-
  • Coarse particles (PM10)3Good-

The days ahead

Good each day through Fri Oct 16, led by fine particles. Yesterday measured 31, good.

Smoke, the next 46 hours

No smoke near the ground through Sat 8 PM.

FriSat

Precipitation

What has fallen at East Merrimack

None in the last 24 hours; 0.52 in over the last 3 days, to Thu 10 PM. Measured by radar and rain gauges, as water.

Last 24 hours
0.00in
Last 3 days
0.52in

Visibility

How far you can see at East Merrimack, the next 46 hours

Mist or haze: visibility falls to 1 miles Fri 11 AM.

FriSat

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

What is measuring near here

The 7 instruments nearest East Merrimack, how far away each one is, how high it stands, and what kind of measurement it makes. The nearest is 2.1 miles away.

measured now5 instruments

Durham 2 SSW54795

At a climate reference station/31.4 mi away/63 ft/78 ft below here

temp, humidity, wind, solar, precip

Rank207of 385

measured daily2 instruments

Merrimack 1.3 WSWNH-HL-61

In a volunteer observer's own ground/2.1 mi away/176 ft/35 ft above here

precip, snowfall, snow depth

Rank-

Nashua 2 NnwNASN3

At a cooperative observer's station/5.9 mi away/137 ft/4 ft below here

snowfall, snow depth, precip, high, low

Rank-

Station report

The weather at Manchester Airpark, drawn

The nearest airport reporting now, 4.5 mi from East Merrimack, New Hampshire. From its report of Oct 15, 2026, 10:53 PM local time: 3 of its 6 sheets.

The sky

Overcast at 25,000 ft; the ceiling is 25,000 ft; visibility 10 mi or more.

Section of the sky over Manchester Airpark, height above the station to scale: overcast cloud with its base at 25,000 feet, the ceiling at 25,000 feet, and visibility of 10 mi or more.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT MHTFIG. A THE SKY OVER MANCHESTER AIRPARKSECTION, 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 STATION05,00010,00015,00020,00025,00030,00035,00040,000ETAGESLOWMIDDLEHIGHTHE STATIONTHE CEILOMETER READS TO 12,000 FTOVC 25,000 FTOVERCAST, 8 EIGHTHS OF THE SKYCEILING 25,000 FTVISIBILITY, MILES: 10 MI OR MORE0510TITLEManchester Airpark, the skySTATION REPORT · ASOS MHTTYPESECTIONSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 1 of 6DATE2026-10-16IDSR-MHT-1DRAWN AS linework on paperSOURCES FB-SKY-001, FB-SKY-010, FB-SKY-011, FB-SKY-012

The air

42.0 F with a dew point of 38.0 F, 86 per cent relative humidity. Air lifted from the station would cool to its dew point, where cloud forms, about 900 ft up; the lowest cloud reported is at 25,000 ft.

Chart of the air at Manchester Airpark: temperature 42.0 degrees Fahrenheit and dew point 38.0, 86 per cent relative humidity; air lifted from the station cools along the dry rate and meets its dew point about 900 feet above the station, against the lowest cloud reported at 25,000 feet; height to scale.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT MHTFIG. B THE AIR AT MANCHESTER AIRPARKTHE REPORTED TEMPERATURE AND DEW POINT, AND AIR LIFTED FROM THE STATION WITHOUT MIXING UNTIL IT SATURATES; HEIGHT ABOVE THE STATION TO SCALEFT ABOVE THE STATION01,0002,0003,0004,0005,00030 F40 F50 FSATURATES 900 FT ABOVE THE STATION, AT 37.1 FABOVE THIS SHEET: LOWEST CLOUD REPORTED, OVC 25,000 FTTEMPERATURE 42.0 FDEW POINT 38.0 FSPREAD 4.0 FRELATIVE HUMIDITY 86 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 POINTTITLEManchester Airpark, the airSTATION REPORT · ASOS MHTTYPECHARTSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 2 of 6DATE2026-10-16IDSR-MHT-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 Manchester Airpark, 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 MHTFIG. C THE WIND AT MANCHESTER AIRPARKPLAN, 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 FORCE73TITLEManchester Airpark, the windSTATION REPORT · ASOS MHTTYPEPLAN north upSCALENOT TO SCALEREVAS REPORTED SHEET 3 of 6DATE2026-10-16IDSR-MHT-3DRAWN AS linework on paperSOURCES FB-EVT-150, FB-ENG-008, FB-INS-002

The full report of Manchester Airpark, 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 East Merrimack

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

Near East Merrimack

River and lake gauges