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Mahtomedi, Minnesota

City in Washington County, Minnesota

Air quality

The air at Mahtomedi

Index 31, good, led by fine particles. Read at 10 PM from its reporting area, Twin Cities (MN), 13 miles off.

31Good
  • Fine particles (PM2.5)31Good7.9 mi
  • Ozone9Good17 ppb12.1 mi
  • Coarse particles (PM10)13Good13.6 mi
  • Nitrogen dioxide1Good1 ppb13.6 mi
  • Sulfur dioxide1Good1.1 ppb13.6 mi
  • Carbon monoxide-0.1 ppm13.6 mi

The days ahead

Good each day through Sun Oct 18, led by fine particles. Yesterday measured 21, good.

Smoke, the next 46 hours

No smoke near the ground through Sat 7 PM.

FriSat

Precipitation

What has fallen at Mahtomedi

0.72 in in the last 24 hours, 0.75 in over the last 3 days, to Thu 9 PM. Measured by radar and rain gauges, as water.

Last 24 hours
0.72in
Last 3 days
0.75in

Visibility

How far you can see at Mahtomedi, the next 46 hours

Visibility stays 8 miles or more through Sat 7 PM, lowest 9 miles Fri 3 AM.

FriSat

On the radar over Mahtomedi, MinnesotaReflectivityStorm topsRain rateRain, last 24 hoursForecast temperatureForecast rain totalEvery picture

What is measuring near here

The 6 instruments nearest Mahtomedi, how far away each one is, how high it stands, and what kind of measurement it makes. The nearest is 0.3 miles away.

measured now4 instruments

measured daily2 instruments

Mahtomedi 0.6 ESEMN-WG-112

In a volunteer observer's own ground/0.3 mi away/990 ft/35 ft above here

precip, snowfall, snow depth

Rank-

MaplewoodMWDM5

At a cooperative observer's station/4.8 mi away/909 ft/46 ft below here

snowfall, snow depth, precip, high, low

Rank-

Station report

The weather at St Paul / Lake Elmo, drawn

The nearest airport reporting now, 6.6 mi from Mahtomedi, Minnesota. From its report of Oct 15, 2026, 10:35 PM local time: 3 of its 6 sheets.

The sky

Overcast at 4,700 ft; the ceiling is 4,700 ft; visibility 10 mi or more.

Section of the sky over St Paul / Lake Elmo, height above the station to scale: overcast cloud with its base at 4,700 feet, the ceiling at 4,700 feet, and visibility of 10 mi or more.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT 21DFIG. A THE SKY OVER ST PAUL / LAKE ELMOSECTION, 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 SHEETOVC 4,700 FTOVERCAST, 8 EIGHTHS OF THE SKYCEILING 4,700 FTVISIBILITY, MILES: 10 MI OR MORE0510TITLESt Paul / Lake Elmo, the skySTATION REPORT · ASOS 21DTYPESECTIONSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 1 of 6DATE2026-10-16IDSR-21D-1DRAWN AS linework on paperSOURCES FB-SKY-001, FB-SKY-017, FB-SKY-016, FB-SKY-018

The air

46.4 F with a dew point of 41.0 F, 81 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 4,700 ft.

Chart of the air at St Paul / Lake Elmo: temperature 46.4 degrees Fahrenheit and dew point 41.0, 81 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 4,700 feet; height to scale.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT 21DFIG. B THE AIR AT ST PAUL / LAKE ELMOTHE REPORTED TEMPERATURE AND DEW POINT, AND AIR LIFTED FROM THE STATION WITHOUT MIXING UNTIL IT SATURATES; HEIGHT ABOVE THE STATION TO SCALEFT ABOVE THE STATION01,0002,0003,0004,0005,0006,00030 F40 F50 F60 FSATURATES 1,200 FT ABOVE THE STATION, AT 39.8 FLOWEST CLOUD REPORTED, OVC 4,700 FTTEMPERATURE 46.4 FDEW POINT 41.0 FSPREAD 5.4 FRELATIVE HUMIDITY 81 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 POINTTITLESt Paul / Lake Elmo, the airSTATION REPORT · ASOS 21DTYPECHARTSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 2 of 6DATE2026-10-16IDSR-21D-2DRAWN AS linework on paperSOURCES FB-WAT-002, FB-ENG-011, FB-ENG-005

The wind

From the west northwest (300 degrees) at 10 mph: force 3, a gentle breeze on the Beaufort scale. The strongest gust today was 25 mph.

Plan of the wind at St Paul / Lake Elmo, north up: blowing from 300 degrees, the west northwest, at 10 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 21DFIG. C THE WIND AT ST PAUL / LAKE ELMOPLAN, NORTH UP: THE WIND AS REPORTED, AND WHERE IT SITS ON THE BEAUFORT SCALENESWTHE STATIONFROM 300°BEAUFORT FORCELEAST WIND, MPH0CALM01LIGHT AIR12LIGHT BREEZE43GENTLE BREEZE8NOW, 10 MPH4MODERATE BREEZE135FRESH BREEZE196STRONG BREEZE257NEAR GALE328GALE399STRONG GALE4710STORM5511VIOLENT STORM6412HURRICANE FORCE73TITLESt Paul / Lake Elmo, the windSTATION REPORT · ASOS 21DTYPEPLAN north upSCALENOT TO SCALEREVAS REPORTED SHEET 3 of 6DATE2026-10-16IDSR-21D-3DRAWN AS linework on paperSOURCES FB-EVT-150, FB-ENG-008, FB-INS-002

The full report of St Paul / Lake Elmo, in 6 sheets, each beside the Field Book plates that explain it

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Snow on the ground

Elsewhere in Minnesota

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

Near Mahtomedi

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

Near Mahtomedi

River and lake gauges