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Derry, New Hampshire

Community in Rockingham County, New Hampshire

Air quality

The air at Derry

Index 34, good, led by fine particles. Read at 2 AM from its reporting area, Interior Rockingham County (NH), 9 miles off.

34Good
  • Fine particles (PM2.5)34Good3.8 mi
  • Ozone7Good5 ppb3.8 mi
  • Coarse particles (PM10)11Good3.8 mi
  • Nitrogen dioxide3Good3.8 ppb3.8 mi
  • Sulfur dioxide0Good0.8 ppb3.8 mi
  • Carbon monoxide-0.2 ppm3.8 mi

The days ahead

Good each day through Today, led by fine particles. Yesterday measured 30, good.

Smoke, the next 42 hours

No smoke near the ground through Sat 8 PM.

FriSat

Precipitation

What has fallen at Derry

None in the last 24 hours; 0.31 in over the last 3 days, to Fri 2 AM. Measured by radar and rain gauges, as water.

Last 24 hours
0.00in
Last 3 days
0.31in

Visibility

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

Fog: visibility falls to 0.6 miles Fri 11 AM, under a mile for 1 hour.

FriSat

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

What is measuring near here

The 7 instruments nearest Derry, 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 now5 instruments

Derry I-93NHDRY

Beside a road/1.8 mi away/247 ft/8 ft above here

temp, pavement temp, wind, visibility, precip

Rank-

Citizen station FW7380FW7380

In a volunteer observer's own ground/5.0 mi away/487 ft/248 ft above here

temp, humidity, wind, precip, pressure

Rank-

Manchester AirparkMHT

At an airfield/7.1 mi away/233 ft/6 ft below here

temp, wind, gust, visibility, precip, pressure

Rank-

SandownSANN3

At a river or reservoir gauge/8.8 mi away/246 ft/7 ft above here

temp, wind, gust, humidity, pressure

Rank-

Durham 2 SSW54795

At a climate reference station/24.1 mi away/63 ft/176 ft below here

temp, humidity, wind, solar, precip

Rank-

measured daily2 instruments

Derry 2.3 SWNH-RC-19

In a volunteer observer's own ground/0.8 mi away/274 ft/35 ft above here

precip, snowfall, snow depth

Rank-

West HampsteadHMPN3

At a cooperative observer's station/6.0 mi away/282 ft/43 ft above here

snowfall, snow depth, precip, high, low

Rank-

Station report

The weather at Manchester Airpark, drawn

The nearest airport reporting now, 7.1 mi from Derry, New Hampshire. From its report of Oct 16, 2026, 2:53 AM local time: 3 of its 6 sheets.

The sky

Scattered at 11,000 ft, 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: scattered cloud with its base at 11,000 feet, 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 SKYSCT 11,000 FTSCATTERED, 3 TO 4 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-013, FB-SKY-014, FB-SKY-010, FB-SKY-011, FB-SKY-012

The air

44.0 F with a dew point of 40.0 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 11,000 ft.

Chart of the air at Manchester Airpark: temperature 44.0 degrees Fahrenheit and dew point 40.0, 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 11,000 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 39.1 FABOVE THIS SHEET: LOWEST CLOUD REPORTED, SCT 11,000 FTTEMPERATURE 44.0 FDEW POINT 40.0 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

0in

Snow on the ground

Measured at West Hampstead (HMPN3), 6.0 miles from here, read 15 Oct, 07:45. measured daily

Elsewhere in New Hampshire

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

Near Derry

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

Near Derry

River and lake gauges