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Port Huron, Michigan

City in St. Clair County, Michigan

Air quality

The air at Port Huron

Index 27, good, led by ozone. Read at 11 PM from its reporting area, Southeast (MI), 58 miles off.

27Good
  • Fine particles (PM2.5)23Good2 mi
  • Ozone27Good18 ppb2 mi
  • Coarse particles (PM10)8Good-
  • Sulfur dioxide3Good2.9 ppb2 mi

The days ahead

Good each day through Fri Oct 16, led by ozone. Yesterday measured 38, good.

Smoke, the next 46 hours

No smoke near the ground through Sat 8 PM.

FriSat

Precipitation

What has fallen at Port Huron

0.02 in in the last 24 hours, 0.04 in over the last 3 days, to Thu 10 PM. Measured by radar and rain gauges, as water.

Last 24 hours
0.02in
Last 3 days
0.04in

Visibility

How far you can see at Port Huron, the next 46 hours

Mist or haze: visibility falls to 3 miles Thu 11 PM.

FriSat

On the radar over Port Huron, MichiganReflectivityStorm topsRain rateRain, last 24 hoursForecast temperatureForecast rain totalEvery picture

What is measuring near here

The 6 instruments nearest Port Huron, how far away each one is, how high it stands, and what kind of measurement it makes. The nearest is 1.0 miles away.

measured now4 instruments

Port HuronPHN

At an airfield/6.5 mi away/650 ft/52 ft above here

temp, wind, gust, visibility, precip, pressure

Rank705of 979

M-1MC130

Beside a road/25.3 mi away/604 ft/6 ft above here

temp, pavement temp, wind, visibility, precip

Rank-

measured daily2 instruments

Port Huron 2.0 SMI-SC-31

In a volunteer observer's own ground/1.0 mi away/603 ft/5 ft above here

precip, snowfall, snow depth

Rank-

Port HuronPRHM4

At a cooperative observer's station/1.2 mi away/541 ft/57 ft below here

snowfall, snow depth, precip, high, low

Rank-

Station report

The weather at Citizen station GW3756, drawn

The nearest instrument reporting now, 2.2 mi from Port Huron, Michigan. From its report of undefined: 3 of its 4 sheets.

The wind

From the south (170 degrees) at 4 mph, gusting 10 mph: force 2, a light breeze on the Beaufort scale.

Plan of the wind at Citizen station GW3756, north up: blowing from 170 degrees, the south, at 4 miles an hour, gusting 10; beside it the Beaufort scale from calm to hurricane force, force 2, light breeze, marked.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT GW3756FIG. C THE WIND AT CITIZEN STATION GW3756PLAN, NORTH UP: THE WIND AS REPORTED, AND WHERE IT SITS ON THE BEAUFORT SCALENESWTHE STATIONFROM 170°BEAUFORT FORCELEAST WIND, MPH0CALM01LIGHT AIR12LIGHT BREEZE4NOW, 4 MPH3GENTLE BREEZE8GUST, 10 MPH4MODERATE BREEZE135FRESH BREEZE196STRONG BREEZE257NEAR GALE328GALE399STRONG GALE4710STORM5511VIOLENT STORM6412HURRICANE FORCE73TITLECitizen station GW3756, the windSTATION REPORT · CWOP GW3756TYPEPLAN north upSCALENOT TO SCALEREVAS REPORTED SHEET 1 of 4DATE2026-10-16IDSR-GW3756-1DRAWN AS linework on paperSOURCES FB-EVT-150, FB-ENG-008

The column

At 598 ft above sea level, 2 per cent of the atmosphere's air lies below the station. The standard atmosphere puts the pressure there at 29.28 inHg and the temperature at 56.9 F; the station's altimeter setting of 29.77 inHg means its barometer reads 29.13 inHg; it reports 57.0 F, 0.1 F warmer than standard.

Section from sea level of where Citizen station GW3756 stands in the atmosphere, height to scale: the station 598 feet above sea level with 2 per cent of the air below it; the standard atmosphere's pressure there, 29.28 inches of mercury, and temperature, 56.9 degrees Fahrenheit; the altimeter setting of 29.77 and the station pressure it means, 29.13.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT GW3756FIG. D WHERE CITIZEN STATION GW3756 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 ATMOSPHERECITIZEN STATION GW37562 PER CENT OF THE AIR BELOW IT598 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 HERE29.28 inHgSTANDARD TEMPERATURE HERE56.9 FALTIMETER SETTING, REPORTED29.77 inHgITS BAROMETER READS29.13 inHgTEMPERATURE, REPORTED57.0 FTITLECitizen station GW3756, the columnSTATION REPORT · CWOP GW3756TYPESECTIONSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 2 of 4DATE2026-10-16IDSR-GW3756-2DRAWN AS linework on paperSOURCES FB-ENG-001, FB-ENG-003

The sun

On Oct 16 the noon sun stands 38 degrees above the horizon at 43.01 N, and the day is 10 h 51 min long. Level ground there takes 61 per cent of the noon sunlight a surface facing the sun would.

Elevation of the noon sun at Citizen station GW3756, angles true: on Oct 16 it stands 38 degrees above the horizon, against 70 at the June solstice, 47 at the equinoxes and 24 at the December solstice; the day is 10 h 51 min long.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT GW3756FIG. E THE SUN AT CITIZEN STATION GW3756ELEVATION LOOKING WEST, SOUTH TO THE LEFT: THE NOON SUN ON THE DAY OF THE REPORT, AND AT THE SOLSTICES AND EQUINOXES; ANGLES TRUETHE STATIONJUNE SOLSTICE 70°EQUINOXES 47°DECEMBER SOLSTICE 24°OCT 16, 38°SOUTHANGLES TRUE; THE RAYS ARE OF ONE LENGTH AND DRAW DIRECTION ONLYDAY LENGTH 10 H 51 MINLEVEL GROUND TAKES 61 PER CENT OF THE NOON SUN A FACING SURFACE WOULDLATITUDE 43.01 N; THE SUN'S DECLINATION -9.1°TITLECitizen station GW3756, the sunSTATION REPORT · CWOP GW3756TYPEELEVATIONSCALEANGLES TRUEREVAS REPORTED SHEET 3 of 4DATE2026-10-16IDSR-GW3756-3DRAWN AS linework on paperSOURCES FB-ENG-007

The full report of Citizen station GW3756, in 4 sheets, each beside the Field Book plates that explain it

0in

Snow on the ground

Measured at Port Huron (PRHM4), 1.2 miles from here, read 13 Oct, 23:59. measured daily

Elsewhere in Michigan

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

Near Port Huron

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

Near Port Huron

River and lake gauges