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Bayou Vista, Louisiana

Community in St. Mary Parish, Louisiana

Air quality

The air at Bayou Vista

Index 29, good, led by fine particles. Read at 11 PM from its reporting area, Thibodaux (LA), 31 miles off.

29Good
  • Fine particles (PM2.5)29Good-
  • Ozone21Good-

The days ahead

Highest 53, moderate, today, led by ozone. Yesterday measured 59, moderate.

Smoke, the next 45 hours

Little smoke near the ground through Sat 7 PM: the index from smoke stays at 11 or under.

FriSat

Precipitation

What has fallen at Bayou Vista

None in the last 3 days, to Thu 10 PM. Measured by radar and rain gauges, as water.

Last 24 hours
0.00in
Last 3 days
0.00in

Visibility

How far you can see at Bayou Vista, the next 45 hours

Visibility stays 7 miles or more through Sat 7 PM, lowest 8 miles Fri 8 AM.

FriSat

On the radar over Bayou Vista, LouisianaReflectivityStorm topsRain rateRain, last 24 hoursForecast temperatureForecast rain totalEvery picture

What is measuring near here

The 5 instruments nearest Bayou Vista, how far away each one is, how high it stands, and what kind of measurement it makes. The nearest is 2.4 miles away.

measured now3 instruments

measured daily2 instruments

Baldwin 1.8 NLA-MY-3

In a volunteer observer's own ground/20.8 mi away/8 ft/6 ft above here

precip, snowfall, snow depth

Rank691of 933

NapoleonvilleNAPL1

At a cooperative observer's station/22.6 mi away/33 ft/31 ft above here

snowfall, snow depth, precip, high, low

Rank-

Station report

The weather at Patterson Memorial, drawn

The nearest airport reporting now, 4.5 mi from Bayou Vista, Louisiana. From its report of Oct 15, 2026, 10:56 PM local time: 3 of its 6 sheets.

The sky

No cloud below 12,000 ft; visibility 10 mi or more.

Section of the sky over Patterson Memorial, height above the station to scale: no cloud detected below 12,000 feet, the reach of its ceilometer, and visibility of 10 mi or more.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT PTNFIG. A THE SKY OVER PATTERSON MEMORIALSECTION, 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 DETECTED BELOW 12,000 FTVISIBILITY, MILES: 10 MI OR MORE0510TITLEPatterson Memorial, the skySTATION REPORT · ASOS PTNTYPESECTIONSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 1 of 6DATE2026-10-16IDSR-PTN-1DRAWN AS linework on paperSOURCES FB-SKY-001

The air

71.0 F with a dew point of 68.0 F, 90 per cent relative humidity. Air lifted from the station would cool to its dew point, where cloud forms, about 700 ft up.

Chart of the air at Patterson Memorial: temperature 71.0 degrees Fahrenheit and dew point 68.0, 90 per cent relative humidity; air lifted from the station cools along the dry rate and meets its dew point about 700 feet above the station; height to scale.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT PTNFIG. B THE AIR AT PATTERSON MEMORIALTHE REPORTED TEMPERATURE AND DEW POINT, AND AIR LIFTED FROM THE STATION WITHOUT MIXING UNTIL IT SATURATES; HEIGHT ABOVE THE STATION TO SCALEFT ABOVE THE STATION01,0002,0003,00060 F70 F80 FSATURATES 700 FT ABOVE THE STATION, AT 67.2 FTEMPERATURE 71.0 FDEW POINT 68.0 FSPREAD 3.0 FRELATIVE HUMIDITY 90 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 POINTTITLEPatterson Memorial, the airSTATION REPORT · ASOS PTNTYPECHARTSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 2 of 6DATE2026-10-16IDSR-PTN-2DRAWN AS linework on paperSOURCES FB-WAT-020, FB-WAT-002, FB-ENG-011, FB-ENG-005

The wind

From the east (100 degrees) at 3 mph: force 1, a light air on the Beaufort scale.

Plan of the wind at Patterson Memorial, north up: blowing from 100 degrees, the east, at 3 miles an hour; beside it the Beaufort scale from calm to hurricane force, force 1, light air, marked.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT PTNFIG. C THE WIND AT PATTERSON MEMORIALPLAN, NORTH UP: THE WIND AS REPORTED, AND WHERE IT SITS ON THE BEAUFORT SCALENESWTHE STATIONFROM 100°BEAUFORT FORCELEAST WIND, MPH0CALM01LIGHT AIR1NOW, 3 MPH2LIGHT BREEZE43GENTLE BREEZE84MODERATE BREEZE135FRESH BREEZE196STRONG BREEZE257NEAR GALE328GALE399STRONG GALE4710STORM5511VIOLENT STORM6412HURRICANE FORCE73TITLEPatterson Memorial, the windSTATION REPORT · ASOS PTNTYPEPLAN north upSCALENOT TO SCALEREVAS REPORTED SHEET 3 of 6DATE2026-10-16IDSR-PTN-3DRAWN AS linework on paperSOURCES FB-EVT-150, FB-ENG-008, FB-INS-002

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

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Snow on the ground

Elsewhere in Louisiana

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

Near Bayou Vista

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

Near Bayou Vista

River and lake gauges