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Chatham, Massachusetts

Community in Barnstable County, Massachusetts

Air quality

The air at Chatham

Index 28, good, led by ozone. Read at 12 AM from its reporting area, Cape Cod and Islands (MA), 20 miles off.

28Good
  • Ozone28Good25 ppb20 mi

The days ahead

Good each day through Tue Oct 20, led by fine particles. Yesterday measured 30, good.

Smoke, the next 45 hours

No smoke near the ground through Sun 8 PM.

SatSun

Precipitation

What has fallen at Chatham

0.12 in in the last 24 hours, 0.15 in over the last 3 days, to Fri 11 PM. Measured by radar and rain gauges, as water.

Last 24 hours
0.12in
Last 3 days
0.15in

Visibility

How far you can see at Chatham, the next 45 hours

Visibility stays 3 miles or more through Sun 8 PM, lowest 3 miles Sat 9 AM.

SatSun

On the radar over Chatham, MassachusettsReflectivityStorm topsRain rateRain, last 24 hoursForecast temperatureForecast rain totalEvery picture

What is measuring near here

The 6 instruments nearest Chatham, how far away each one is, how high it stands, and what kind of measurement it makes. The nearest is 0.9 miles away.

measured now4 instruments

TruroCAOM3

At a river or reservoir gauge/20.2 mi away/125 ft/76 ft above here

temp, wind, gust, humidity, pressure

Rank156of 747

measured daily2 instruments

Chatham 0.2 SSEMA-BA-65

In a volunteer observer's own ground/0.9 mi away/22 ft/27 ft below here

precip, snowfall, snow depth

Rank-

Wpc FacilityHYSM3

At a cooperative observer's station/17.5 mi away/43 ft/6 ft below here

snowfall, snow depth, precip, high, low

Rank378of 747

Station report

The weather at Chatham Muni Arpt, drawn

The nearest airport reporting now, 1.6 mi from Chatham, Massachusetts. From its report of Oct 16, 2026, 11:52 PM local time: 3 of its 6 sheets.

The sky

Overcast at 200 ft; the ceiling is 200 ft; visibility 2 mi.

Section of the sky over Chatham Muni Arpt, height above the station to scale: overcast cloud with its base at 200 feet, the ceiling at 200 feet, and visibility of 2 mi.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT CQXFIG. A THE SKY OVER CHATHAM MUNI ARPTSECTION, 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 SHEETOVC 200 FTOVERCAST, 8 EIGHTHS OF THE SKYCEILING 200 FTVISIBILITY, MILES: 2 MI0510TITLEChatham Muni Arpt, the skySTATION REPORT · ASOS CQXTYPESECTIONSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 1 of 6DATE2026-10-17IDSR-CQX-1DRAWN AS linework on paperSOURCES FB-SKY-001, FB-SKY-017, FB-SKY-016, FB-SKY-018

The air

63.0 F with a dew point of 63.0 F, 100 per cent relative humidity. The air is saturated at the ground; the lowest cloud reported is at 200 ft.

Chart of the air at Chatham Muni Arpt: temperature 63.0 degrees Fahrenheit and dew point 63.0, 100 per cent relative humidity; the air saturated at the ground, against the lowest cloud reported at 200 feet; height to scale.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT CQXFIG. B THE AIR AT CHATHAM MUNI ARPTTHE REPORTED TEMPERATURE AND DEW POINT, AND AIR LIFTED FROM THE STATION WITHOUT MIXING UNTIL IT SATURATES; HEIGHT ABOVE THE STATION TO SCALEFT ABOVE THE STATION01,0002,0003,00050 F60 F70 FSATURATED AT THE GROUNDLOWEST CLOUD REPORTED, OVC 200 FTTEMPERATURE AND DEW POINT 63.0 F, 63.0 FRELATIVE HUMIDITY 100 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 POINTTITLEChatham Muni Arpt, the airSTATION REPORT · ASOS CQXTYPECHARTSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 2 of 6DATE2026-10-17IDSR-CQX-2DRAWN AS linework on paperSOURCES FB-WAT-020, FB-WAT-002, FB-ENG-011, FB-ENG-005

The wind

From the west southwest (240 degrees) at 7 mph: force 2, a light breeze on the Beaufort scale. The strongest gust today was 29 mph.

Plan of the wind at Chatham Muni Arpt, north up: blowing from 240 degrees, the west southwest, at 7 miles an hour; beside it the Beaufort scale from calm to hurricane force, force 2, light breeze, marked.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT CQXFIG. C THE WIND AT CHATHAM MUNI ARPTPLAN, NORTH UP: THE WIND AS REPORTED, AND WHERE IT SITS ON THE BEAUFORT SCALENESWTHE STATIONFROM 240°BEAUFORT FORCELEAST WIND, MPH0CALM01LIGHT AIR12LIGHT BREEZE4NOW, 7 MPH3GENTLE BREEZE84MODERATE BREEZE135FRESH BREEZE196STRONG BREEZE257NEAR GALE328GALE399STRONG GALE4710STORM5511VIOLENT STORM6412HURRICANE FORCE73TITLEChatham Muni Arpt, the windSTATION REPORT · ASOS CQXTYPEPLAN north upSCALENOT TO SCALEREVAS REPORTED SHEET 3 of 6DATE2026-10-17IDSR-CQX-3DRAWN AS linework on paperSOURCES FB-EVT-150, FB-ENG-008, FB-INS-002

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

0in

Snow on the ground

Measured at Wpc Facility (HYSM3), 17.5 miles from here, read 16 Oct, 08:55. measured daily

Elsewhere in Massachusetts

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

Near Chatham

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

Near Chatham

River and lake gauges