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Trujillo Alto, Puerto Rico

Town in Trujillo Alto Municipio, Puerto Rico

Air quality

The air at Trujillo Alto

Index 32, good, led by fine particles. Read at 1 AM from its reporting area, Catano (PR), 9 miles off.

32Good
  • Fine particles (PM2.5)32Good-

The days ahead

Yesterday measured 32, good.

On the radar over Trujillo Alto, Puerto RicoReflectivityStorm topsRain rateRain, last 24 hoursForecast temperatureForecast rain totalEvery picture

What is measuring near here

The 5 instruments nearest Trujillo Alto, how far away each one is, how high it stands, and what kind of measurement it makes. The nearest is 1.8 miles away.

measured now3 instruments

San JuanTJSJ

At an airfield/4.8 mi away/9 ft/223 ft below here

temp, wind, gust, visibility, precip, pressure

Rank34of 243

CorozalS2188

At a soil climate station/22.9 mi away/852 ft/620 ft above here

temp, humidity, soil temp, soil moisture

Rank-

measured daily2 instruments

Trujillo Alto 1.8 NWPR-SJ-7

In a volunteer observer's own ground/1.8 mi away/200 ft/32 ft below here

precip, snowfall, snow depth

Rank-

Station report

The weather at San Juan, drawn

The nearest airport reporting now, 4.8 mi from Trujillo Alto, Puerto Rico. From its report of Oct 16, 2026, 2:56 AM local time: 3 of its 6 sheets.

The sky

Scattered at 2,500 ft, scattered at 5,000 ft; visibility 10 mi or more.

Section of the sky over San Juan, height above the station to scale: scattered cloud with its base at 2,500 feet, scattered cloud with its base at 5,000 feet, and visibility of 10 mi or more.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT TJSJFIG. A THE SKY OVER SAN JUANSECTION, 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 STATION01,0002,0003,0004,0005,0006,0007,0008,000ETAGESLOWMIDDLETHE STATIONTHE CEILOMETER READS TO 12,000 FT, ABOVE THIS SHEETSCT 5,000 FTSCATTERED, 3 TO 4 EIGHTHS OF THE SKYSCT 2,500 FTSCATTERED, 3 TO 4 EIGHTHS OF THE SKYVISIBILITY, MILES: 10 MI OR MORE0510TITLESan Juan, the skySTATION REPORT · ASOS TJSJTYPESECTIONSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 1 of 6DATE2026-10-16IDSR-TJSJ-1DRAWN AS linework on paperSOURCES FB-SKY-001, FB-SKY-017, FB-SKY-016, FB-SKY-018

The air

81.0 F with a dew point of 76.0 F, 85 per cent relative humidity. Air lifted from the station would cool to its dew point, where cloud forms, about 1,200 ft up; the lowest cloud reported is at 2,500 ft.

Chart of the air at San Juan: temperature 81.0 degrees Fahrenheit and dew point 76.0, 85 per cent relative humidity; air lifted from the station cools along the dry rate and meets its dew point about 1,200 feet above the station, against the lowest cloud reported at 2,500 feet; height to scale.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT TJSJFIG. B THE AIR AT SAN JUANTHE REPORTED TEMPERATURE AND DEW POINT, AND AIR LIFTED FROM THE STATION WITHOUT MIXING UNTIL IT SATURATES; HEIGHT ABOVE THE STATION TO SCALEFT ABOVE THE STATION01,0002,0003,0004,00060 F70 F80 F90 FSATURATES 1,200 FT ABOVE THE STATION, AT 74.7 FLOWEST CLOUD REPORTED, SCT 2,500 FTTEMPERATURE 81.0 FDEW POINT 76.0 FSPREAD 5.0 FRELATIVE HUMIDITY 85 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 POINTTITLESan Juan, the airSTATION REPORT · ASOS TJSJTYPECHARTSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 2 of 6DATE2026-10-16IDSR-TJSJ-2DRAWN AS linework on paperSOURCES FB-WAT-002, FB-ENG-011, FB-ENG-005

The wind

Calm.

Plan of the wind at San Juan, 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 TJSJFIG. C THE WIND AT SAN JUANPLAN, 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 FORCE73TITLESan Juan, the windSTATION REPORT · ASOS TJSJTYPEPLAN north upSCALENOT TO SCALEREVAS REPORTED SHEET 3 of 6DATE2026-10-16IDSR-TJSJ-3DRAWN AS linework on paperSOURCES FB-EVT-150, FB-ENG-008, FB-INS-002

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

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Snow on the ground

Near Trujillo Alto

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

Near Trujillo Alto

River and lake gauges