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Le Roy, Iowa

City in Decatur County, Iowa

Air quality

The air at Le Roy

Index 24, good, led by fine particles. Read at 1 AM from its reporting area, Des Moines (IA), 45 miles off.

24Good
  • Fine particles (PM2.5)24Good-
  • Ozone17Good-

The days ahead

Good each day through Sat Oct 17, led by fine particles. Yesterday measured 13, good.

Smoke, the next 42 hours

No smoke near the ground through Sat 7 PM.

FriSat

Precipitation

What has fallen at Le Roy

0.19 in in the last 24 hours, and none in the 2 days before, to Fri 1 AM. Measured by radar and rain gauges, as water.

Last 24 hours
0.19in
Last 3 days
0.19in

Visibility

How far you can see at Le Roy, the next 42 hours

Visibility stays 7 miles or more through Sat 7 PM, lowest 8 miles Sat 4 AM.

FriSat

On the radar over Le Roy, IowaReflectivityStorm topsRain rateRain, last 24 hoursForecast temperatureForecast rain totalEvery picture

What is measuring near here

The 6 instruments nearest Le Roy, how far away each one is, how high it stands, and what kind of measurement it makes. The nearest is 9.1 miles away.

measured now4 instruments

OsceolaI75

At an airfield/12.7 mi away/1,110 ft/5 ft below here

temp, wind, gust, visibility, precip, pressure

Rank218of 1,060

measured daily2 instruments

IA-DC-3IA-DC-3

In a volunteer observer's own ground/9.1 mi away/1,152 ft/37 ft above here

precip, snowfall, snow depth

Rank-

OsceolaOSEI4

At a cooperative observer's station/15.0 mi away/1,122 ft/7 ft above here

snowfall, snow depth, precip, high, low

Rank779of 1,060

Station report

The weather at Osceola, drawn

The nearest airport reporting now, 12.7 mi from Le Roy, Iowa. From its report of Oct 16, 2026, 1:55 AM local time: 3 of its 3 sheets.

The column

At 1,110 ft above sea level, 4 per cent of the atmosphere's air lies below the station. The standard atmosphere puts the pressure there at 28.74 inHg and the temperature at 55.0 F.

Section from sea level of where Osceola stands in the atmosphere, height to scale: the station 1,110 feet above sea level with 4 per cent of the air below it; the standard atmosphere's pressure there, 28.74 inches of mercury, and temperature, 55.0 degrees Fahrenheit.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT I75FIG. D WHERE OSCEOLA 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 ATMOSPHEREOSCEOLA4 PER CENT OF THE AIR BELOW IT1,110 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 HERE28.74 inHgSTANDARD TEMPERATURE HERE55.0 FTITLEOsceola, the columnSTATION REPORT · ASOS I75TYPESECTIONSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 1 of 3DATE2026-10-16IDSR-I75-1DRAWN AS linework on paperSOURCES FB-ENG-001, FB-ENG-003

The sun

On Oct 16 the noon sun stands 40 degrees above the horizon at 41.05 N, and the day is 10 h 56 min long. Level ground there takes 64 per cent of the noon sunlight a surface facing the sun would.

Elevation of the noon sun at Osceola, angles true: on Oct 16 it stands 40 degrees above the horizon, against 72 at the June solstice, 49 at the equinoxes and 26 at the December solstice; the day is 10 h 56 min long.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT I75FIG. E THE SUN AT OSCEOLAELEVATION 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 72°EQUINOXES 49°DECEMBER SOLSTICE 26°OCT 16, 40°SOUTHANGLES TRUE; THE RAYS ARE OF ONE LENGTH AND DRAW DIRECTION ONLYDAY LENGTH 10 H 56 MINLEVEL GROUND TAKES 64 PER CENT OF THE NOON SUN A FACING SURFACE WOULDLATITUDE 41.05 N; THE SUN'S DECLINATION -9.1°TITLEOsceola, the sunSTATION REPORT · ASOS I75TYPEELEVATIONSCALEANGLES TRUEREVAS REPORTED SHEET 2 of 3DATE2026-10-16IDSR-I75-2DRAWN AS linework on paperSOURCES FB-ENG-007

The instrument

An airport station, 1,110 ft above sea level. Its report of Oct 16, 2026, 1:55 AM local time is written on the sensors that made it.

Elevation of an airport station, Osceola, each sensor drawn and labelled with what it read: no reading in the last day.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT I75FIG. F THE INSTRUMENTELEVATION OF AN AIRPORT STATION, EACH SENSOR WITH WHAT IT READ, OCT 16, 2026, 1:55 AM LOCAL TIMEBAROMETERS, IN THE SHELTER-HEATED RAIN GAUGE-VISIBILITY SENSOR, 7 FT-BEAMCEILOMETER, LOOKING UP-TEMPERATURE IN ITS SHIELD, 5 FT-WIND, 33 FT-33 FT5 FTHEIGHTS TO SCALE; THE SPACING BETWEEN SENSORS IS NOTTITLEOsceola, the instrumentSTATION REPORT · ASOS I75TYPEELEVATIONSCALEPARTLY TO SCALEREVAS REPORTED SHEET 3 of 3DATE2026-10-16IDSR-I75-3DRAWN AS linework on paperSOURCES FB-INS-002, FB-INS-001, FB-INS-009

The full report of Osceola, in 3 sheets, each beside the Field Book plates that explain it

0in

Snow on the ground

Measured at Osceola (OSEI4), 15.0 miles from here, read 15 Oct, 07:00. measured daily

Elsewhere in Iowa

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

Near Le Roy

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

Near Le Roy

River and lake gauges