Storm Station
Sign in

Hays, Montana

Community in Blaine County, Montana

Air quality

The air at Hays

Index 2, good, led by fine particles. Read at 3 AM from its reporting area, Malta (MT), 44 miles off.

2Good
  • Fine particles (PM2.5)2Good-

The days ahead

Yesterday measured 12, good.

Smoke, the next 46 hours

Little smoke near the ground through Sun 12 AM: the index from smoke stays at 11 or under.

FriSat

Precipitation

What has fallen at Hays

None in the last 3 days, to Fri 2 AM. 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 Hays, the next 46 hours

Visibility stays 10 miles or more through Sun 12 AM.

FriSat

On the radar over Hays, MontanaReflectivityStorm topsRain rateRain, last 24 hoursForecast temperatureForecast rain totalEvery picture

What is measuring near here

The 4 instruments nearest Hays, 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 now2 instruments

Zortman MineALDM8

At a river or reservoir gauge/7.9 mi away/4,672 ft/1,008 ft above here

temp, wind, gust, humidity, pressure

Rank187of 1,053

measured daily2 instruments

Zortman 10.0 SSWMT-PH-1

In a volunteer observer's own ground/16.4 mi away/3,030 ft/634 ft below here

precip, snowfall, snow depth

Rank-

Fort Belknap 2 SWBKPM8

At a cooperative observer's station/32.3 mi away/2,524 ft/1,140 ft below here

snowfall, snow depth, precip, high, low

Rank-

Station report

The weather at Hays Site MT-66 MP 10.5, drawn

The nearest instrument reporting now, 6.0 mi from Hays, Montana. From its report of Oct 16, 2026, 3:00 AM local time: 3 of its 5 sheets.

The air

35.0 F with a dew point of 15.3 F, 44 per cent relative humidity. Air lifted from the station would cool to its dew point, where cloud forms, about 4,400 ft up.

Chart of the air at Hays Site MT-66 MP 10.5: temperature 35.0 degrees Fahrenheit and dew point 15.3, 44 per cent relative humidity; air lifted from the station cools along the dry rate and meets its dew point about 4,400 feet above the station; height to scale.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT MTHAYFIG. B THE AIR AT HAYS SITE MT-66 MP 10.5THE REPORTED TEMPERATURE AND DEW POINT, AND AIR LIFTED FROM THE STATION WITHOUT MIXING UNTIL IT SATURATES; HEIGHT ABOVE THE STATION TO SCALEFT ABOVE THE STATION01,0002,0003,0004,0005,0006,0000 F10 F20 F30 F40 F50 FSATURATES 4,400 FT ABOVE THE STATION, AT 11.3 FTEMPERATURE 35.0 FDEW POINT 15.3 FSPREAD 19.7 FRELATIVE HUMIDITY 44 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 POINTTITLEHays Site MT-66 MP 10.5, the airSTATION REPORT · RWIS MTHAYTYPECHARTSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 1 of 5DATE2026-10-16IDSR-MTHAY-1DRAWN AS linework on paperSOURCES FB-WAT-002, FB-ENG-011, FB-ENG-005

The wind

From the east southeast (113 degrees) at 21 mph, gusting 25 mph: force 5, a fresh breeze on the Beaufort scale. The strongest gust today was 27 mph.

Plan of the wind at Hays Site MT-66 MP 10.5, north up: blowing from 113 degrees, the east southeast, at 21 miles an hour, gusting 25; beside it the Beaufort scale from calm to hurricane force, force 5, fresh breeze, marked.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT MTHAYFIG. C THE WIND AT HAYS SITE MT-66 MP 10.5PLAN, NORTH UP: THE WIND AS REPORTED, AND WHERE IT SITS ON THE BEAUFORT SCALENESWTHE STATIONFROM 113°BEAUFORT FORCELEAST WIND, MPH0CALM01LIGHT AIR12LIGHT BREEZE43GENTLE BREEZE84MODERATE BREEZE135FRESH BREEZE19NOW, 21 MPH6STRONG BREEZE25GUST, 25 MPH7NEAR GALE328GALE399STRONG GALE4710STORM5511VIOLENT STORM6412HURRICANE FORCE73TITLEHays Site MT-66 MP 10.5, the windSTATION REPORT · RWIS MTHAYTYPEPLAN north upSCALENOT TO SCALEREVAS REPORTED SHEET 2 of 5DATE2026-10-16IDSR-MTHAY-2DRAWN AS linework on paperSOURCES FB-EVT-150, FB-ENG-008

The column

At 3,894 ft above sea level, 13 per cent of the atmosphere's air lies below the station. The standard atmosphere puts the pressure there at 25.94 inHg and the temperature at 45.1 F; it reports 35.0 F, 10.1 F colder than standard.

Section from sea level of where Hays Site MT-66 MP 10.5 stands in the atmosphere, height to scale: the station 3,894 feet above sea level with 13 per cent of the air below it; the standard atmosphere's pressure there, 25.94 inches of mercury, and temperature, 45.1 degrees Fahrenheit.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT MTHAYFIG. D WHERE HAYS SITE MT-66 MP 10.5 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 ATMOSPHEREHAYS SITE MT-66 MP 10.513 PER CENT OF THE AIR BELOW IT3,894 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 HERE25.94 inHgSTANDARD TEMPERATURE HERE45.1 FTEMPERATURE, REPORTED35.0 FTITLEHays Site MT-66 MP 10.5, the columnSTATION REPORT · RWIS MTHAYTYPESECTIONSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 3 of 5DATE2026-10-16IDSR-MTHAY-3DRAWN AS linework on paperSOURCES FB-ENG-001, FB-ENG-003

The full report of Hays Site MT-66 MP 10.5, in 5 sheets, each beside the Field Book plates that explain it

-

Snow on the ground

Elsewhere in Montana

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

Near Hays

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

Near Hays

River and lake gauges