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Erwinville, Louisiana

Community in West Baton Rouge Parish, Louisiana

Air quality

The air at Erwinville

Index 40, good, led by ozone. Read at 10 PM from its reporting area, Baton Rouge Area (LA), 17 miles off.

40Good
  • Fine particles (PM2.5)32Good14.3 mi
  • Ozone40Good39 ppb11.5 mi
  • Coarse particles (PM10)14Good14.3 mi
  • Nitrogen dioxide7Good7.7 ppb11.5 mi

The days ahead

Highest 90, moderate, today, led by fine particles. Yesterday measured 90, moderate.

Smoke, the next 46 hours

Little smoke near the ground through Sat 7 PM: the index from smoke stays at 22 or under.

FriSat

Precipitation

What has fallen at Erwinville

None in the last 3 days, to Thu 9 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 Erwinville, the next 46 hours

Visibility stays 9 miles or more through Sat 7 PM, lowest 9 miles Fri 7 AM.

FriSat

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

What is measuring near here

The 5 instruments nearest Erwinville, how far away each one is, how high it stands, and what kind of measurement it makes. The nearest is 6.0 miles away.

measured now3 instruments

New RoadsHZR

At an airfield/13.1 mi away/36 ft/15 ft above here

temp, wind, gust, visibility, precip, pressure

Rank771of 933

measured daily2 instruments

Livonia 3.5 ESELA-PC-3

In a volunteer observer's own ground/6.0 mi away/7 ft/14 ft below here

precip, snowfall, snow depth

Rank-

Port AllenPTAL1

At a cooperative observer's station/12.3 mi away/26 ft/5 ft above here

snowfall, snow depth, precip, high, low

Rank-

Station report

The weather at New Roads, drawn

The nearest airport reporting now, 13.1 mi from Erwinville, Louisiana. From its report of Oct 15, 2026, 10:35 PM local time: 3 of its 5 sheets.

The sky

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

Section of the sky over New Roads, 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 HZRFIG. A THE SKY OVER NEW ROADSSECTION, 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 MORE0510TITLENew Roads, the skySTATION REPORT · ASOS HZRTYPESECTIONSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 1 of 5DATE2026-10-16IDSR-HZR-1DRAWN AS linework on paperSOURCES FB-SKY-001

The air

70.5 F with a dew point of 68.0 F, 92 per cent relative humidity. Air lifted from the station would cool to its dew point, where cloud forms, about 600 ft up.

Chart of the air at New Roads: temperature 70.5 degrees Fahrenheit and dew point 68.0, 92 per cent relative humidity; air lifted from the station cools along the dry rate and meets its dew point about 600 feet above the station; height to scale.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT HZRFIG. B THE AIR AT NEW ROADSTHE 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 600 FT ABOVE THE STATION, AT 67.3 FTEMPERATURE AND DEW POINT 70.5 F, 68.0 FRELATIVE HUMIDITY 92 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 POINTTITLENew Roads, the airSTATION REPORT · ASOS HZRTYPECHARTSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 2 of 5DATE2026-10-16IDSR-HZR-2DRAWN AS linework on paperSOURCES FB-WAT-020, FB-WAT-002, FB-ENG-011, FB-ENG-005

The column

At 36 ft above sea level, 0 per cent of the atmosphere's air lies below the station. The standard atmosphere puts the pressure there at 29.88 inHg and the temperature at 58.9 F; the station's altimeter setting of 30.05 inHg means its barometer reads 30.01 inHg; it reports 70.5 F, 11.6 F warmer than standard.

Section from sea level of where New Roads stands in the atmosphere, height to scale: the station 36 feet above sea level with 0 per cent of the air below it; the standard atmosphere's pressure there, 29.88 inches of mercury, and temperature, 58.9 degrees Fahrenheit; the altimeter setting of 30.05 and the station pressure it means, 30.01.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT HZRFIG. D WHERE NEW ROADS STANDS IN THE ATMOSPHERESECTION FROM SEA LEVEL, HEIGHT TO SCALE, THE STATION IN THE STANDARD ATMOSPHEREFT ABOVE SEA LEVEL05,00010,00015,000SEA LEVEL, 29.92 inHg IN THE STANDARD ATMOSPHERENEW ROADS0 PER CENT OF THE AIR BELOW IT36 FT10 PER CENT OF THE AIR BELOW, 2,890 FT20 PER CENT OF THE AIR BELOW, 6,050 FT30 PER CENT OF THE AIR BELOW, 9,540 FT40 PER CENT OF THE AIR BELOW, 13,470 FTSTANDARD PRESSURE HERE29.88 inHgSTANDARD TEMPERATURE HERE58.9 FALTIMETER SETTING, REPORTED30.05 inHgITS BAROMETER READS30.01 inHgTEMPERATURE, REPORTED70.5 FTITLENew Roads, the columnSTATION REPORT · ASOS HZRTYPESECTIONSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 3 of 5DATE2026-10-16IDSR-HZR-3DRAWN AS linework on paperSOURCES FB-ENG-001, FB-ENG-003

The full report of New Roads, in 5 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 Erwinville

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

Near Erwinville

River and lake gauges