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Gap, Pennsylvania

Community in Lancaster County, Pennsylvania

Air quality

The air at Gap

Index 24, good, led by ozone. Read at 1 AM from its reporting area, Wilmington Area (DE), 31 miles off.

24Good
  • Fine particles (PM2.5)18Good6.2 mi
  • Ozone24Good20 ppb6.2 mi
  • Coarse particles (PM10)7Good-

The days ahead

Yesterday measured 32, good.

Smoke, the next 44 hours

No smoke near the ground through Sun 8 PM.

SatSun

Precipitation

What has fallen at Gap

0.11 in in the last 24 hours, 0.23 in over the last 3 days, to Sat 12 AM. Measured by radar and rain gauges, as water.

Last 24 hours
0.11in
Last 3 days
0.23in

Visibility

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

Visibility stays 10 miles or more through Sun 8 PM.

SatSun

On the radar over Gap, PennsylvaniaReflectivityStorm topsRain rateRain, last 24 hoursForecast temperatureForecast rain totalEvery picture

What is measuring near here

The 7 instruments nearest Gap, how far away each one is, how high it stands, and what kind of measurement it makes. The nearest is 0.5 miles away.

measured now5 instruments

Avondale 2 N03761

At a climate reference station/15.9 mi away/400 ft/156 ft below here

temp, humidity, wind, solar, precip

Rank775of 1,394

measured daily2 instruments

Gap 0.3 NWPA-LN-23

In a volunteer observer's own ground/0.5 mi away/472 ft/84 ft below here

precip, snowfall, snow depth

Rank840of 1,394

New HollandNHDP1

At a cooperative observer's station/6.6 mi away/620 ft/64 ft above here

snowfall, snow depth, precip, high, low

Rank677of 1,394

Station report

The weather at Coatesville, drawn

The nearest airport reporting now, 8.3 mi from Gap, Pennsylvania. From its report of Oct 17, 2026, 1:15 AM local time: 3 of its 6 sheets.

The sky

No cloud reported; visibility 10 mi or more.

Section of the sky over Coatesville, height above the station to scale: no cloud reported, and visibility of 10 mi or more.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT MQSFIG. A THE SKY OVER COATESVILLESECTION, 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 REPORTEDVISIBILITY, MILES: 10 MI OR MORE0510TITLECoatesville, the skySTATION REPORT · ASOS MQSTYPESECTIONSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 1 of 6DATE2026-10-17IDSR-MQS-1DRAWN AS linework on paperSOURCES FB-SKY-001

The air

59.5 F with a dew point of 56.0 F, 88 per cent relative humidity. Air lifted from the station would cool to its dew point, where cloud forms, about 800 ft up.

Chart of the air at Coatesville: temperature 59.5 degrees Fahrenheit and dew point 56.0, 88 per cent relative humidity; air lifted from the station cools along the dry rate and meets its dew point about 800 feet above the station; height to scale.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT MQSFIG. B THE AIR AT COATESVILLETHE REPORTED TEMPERATURE AND DEW POINT, AND AIR LIFTED FROM THE STATION WITHOUT MIXING UNTIL IT SATURATES; HEIGHT ABOVE THE STATION TO SCALEFT ABOVE THE STATION01,0002,0003,00040 F50 F60 F70 FSATURATES 800 FT ABOVE THE STATION, AT 55.2 FTEMPERATURE 59.5 FDEW POINT 56.0 FSPREAD 3.5 FRELATIVE HUMIDITY 88 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 POINTTITLECoatesville, the airSTATION REPORT · ASOS MQSTYPECHARTSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 2 of 6DATE2026-10-17IDSR-MQS-2DRAWN AS linework on paperSOURCES FB-WAT-020, FB-WAT-002, FB-ENG-011, FB-ENG-005

The wind

From the northwest (320 degrees) at 14 mph: force 4, a moderate breeze on the Beaufort scale.

Plan of the wind at Coatesville, north up: blowing from 320 degrees, the northwest, at 14 miles an hour; beside it the Beaufort scale from calm to hurricane force, force 4, moderate breeze, marked.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT MQSFIG. C THE WIND AT COATESVILLEPLAN, NORTH UP: THE WIND AS REPORTED, AND WHERE IT SITS ON THE BEAUFORT SCALENESWTHE STATIONFROM 320°BEAUFORT FORCELEAST WIND, MPH0CALM01LIGHT AIR12LIGHT BREEZE43GENTLE BREEZE84MODERATE BREEZE13NOW, 14 MPH5FRESH BREEZE196STRONG BREEZE257NEAR GALE328GALE399STRONG GALE4710STORM5511VIOLENT STORM6412HURRICANE FORCE73TITLECoatesville, the windSTATION REPORT · ASOS MQSTYPEPLAN north upSCALENOT TO SCALEREVAS REPORTED SHEET 3 of 6DATE2026-10-17IDSR-MQS-3DRAWN AS linework on paperSOURCES FB-EVT-150, FB-ENG-008, FB-INS-002

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

0in

Snow on the ground

Measured at New Holland (NHDP1), 6.6 miles from here, read 15 Oct, 23:59. measured daily

Elsewhere in Pennsylvania

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

Near Gap

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

Near Gap

River and lake gauges