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Río Grande, Puerto Rico

Town in Río Grande Municipio, Puerto Rico

Air quality

The air at Río Grande

Index 24, good, led by fine particles. Read at 9 PM from its reporting area, Catano (PR), 20 miles off.

24Good
  • Fine particles (PM2.5)24Good20.1 mi

The days ahead

Yesterday measured 46, good.

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

What is measuring near here

The 5 instruments nearest Río Grande, how far away each one is, how high it stands, and what kind of measurement it makes. The nearest is 3.4 miles away.

measured now3 instruments

CatalinaCTAP4

At a river or reservoir gauge/5.8 mi away/384 ft/332 ft above here

temp, wind, gust, humidity, pressure

Rank46of 243

San JuanTJSJ

At an airfield/11.6 mi away/9 ft/43 ft below here

temp, wind, gust, visibility, precip, pressure

Rank34of 243

CorozalS2188

At a soil climate station/34.3 mi away/852 ft/800 ft above here

temp, humidity, soil temp, soil moisture

Rank-

measured daily2 instruments

Rio Grande 3.6 SSWPR-RG-2

In a volunteer observer's own ground/3.4 mi away/864 ft/812 ft above here

precip, snowfall, snow depth

Rank-

ParaisoNGBP4

At a cooperative observer's station/11.2 mi away/362 ft/310 ft above here

snowfall, snow depth, precip, high, low

Rank-

Station report

The weather at San Juan, drawn

The nearest airport reporting now, 11.6 mi from Río Grande, Puerto Rico. From its report of Oct 15, 2026, 9:56 PM local time: 3 of its 6 sheets.

The sky

Scattered at 2,500 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, 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 STATION05001,0001,5002,0002,5003,0003,5004,000ETAGESLOWTHE STATIONTHE CEILOMETER READS TO 12,000 FT, ABOVE THIS SHEETSCT 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

83.0 F with a dew point of 75.0 F, 77 per cent relative humidity. Air lifted from the station would cool to its dew point, where cloud forms, about 1,900 ft up; the lowest cloud reported is at 2,500 ft.

Chart of the air at San Juan: temperature 83.0 degrees Fahrenheit and dew point 75.0, 77 per cent relative humidity; air lifted from the station cools along the dry rate and meets its dew point about 1,900 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 1,900 FT ABOVE THE STATION, AT 73.0 FLOWEST CLOUD REPORTED, SCT 2,500 FTTEMPERATURE 83.0 FDEW POINT 75.0 FSPREAD 8.0 FRELATIVE HUMIDITY 77 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

From the east (90 degrees) at 8 mph: force 3, a gentle breeze on the Beaufort scale. The strongest gust today was 24 mph.

Plan of the wind at San Juan, north up: blowing from 90 degrees, the east, at 8 miles an hour; beside it the Beaufort scale from calm to hurricane force, force 3, gentle breeze, 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 STATIONFROM 90°BEAUFORT FORCELEAST WIND, MPH0CALM01LIGHT AIR12LIGHT BREEZE43GENTLE BREEZE8NOW, 8 MPH4MODERATE 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 Río Grande

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

Near Río Grande

River and lake gauges