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McKinney, Texas

City in Collin County, Texas

Air quality

The air at McKinney

Index 16, good, led by fine particles. Read at 5 AM from its reporting area, Dallas-Fort Worth (TX), 29 miles off.

16Good
  • Fine particles (PM2.5)16Good-
  • Ozone16Good-
  • Coarse particles (PM10)7Good-

The days ahead

Good each day through Sun Oct 18, led by ozone. Yesterday measured 44, good.

Smoke, the next 45 hours

No smoke near the ground through Sun 1 AM.

FriSat

Precipitation

What has fallen at McKinney

None in the last 3 days, to Fri 4 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 McKinney, the next 45 hours

Visibility stays 10 miles or more through Sun 1 AM.

FriSat

On the radar over McKinney, TexasReflectivityStorm topsRain rateRain, last 24 hoursForecast temperatureForecast rain totalEvery picture

What is measuring near here

The 5 instruments nearest McKinney, how far away each one is, how high it stands, and what kind of measurement it makes. The nearest is 0.5 miles away.

measured now3 instruments

Mc KinneyTKI

At an airfield/5.9 mi away/587 ft/138 ft below here

temp, wind, gust, visibility, precip, pressure

Rank30of 4,689

measured daily2 instruments

McKinney 2.3 SWTX-CLL-115

In a volunteer observer's own ground/0.6 mi away/730 ft/5 ft above here

precip, snowfall, snow depth

Rank-

Lavon ReservoirLVNT2

At a reservoir/16.0 mi away/482 ft/243 ft below here

snowfall, snow depth, precip, high, low

Rank-

Station report

The weather at Mc Kinney, drawn

The nearest airport reporting now, 5.9 mi from McKinney, Texas. From its report of Oct 16, 2026, 4:53 AM local time: 3 of its 4 sheets.

The air

63.0 F with a dew point of 52.0 F, 67 per cent relative humidity. Air lifted from the station would cool to its dew point, where cloud forms, about 2,500 ft up.

Chart of the air at Mc Kinney: temperature 63.0 degrees Fahrenheit and dew point 52.0, 67 per cent relative humidity; air lifted from the station cools along the dry rate and meets its dew point about 2,500 feet above the station; height to scale.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT TKIFIG. B THE AIR AT MC KINNEYTHE REPORTED TEMPERATURE AND DEW POINT, AND AIR LIFTED FROM THE STATION WITHOUT MIXING UNTIL IT SATURATES; HEIGHT ABOVE THE STATION TO SCALEFT ABOVE THE STATION01,0002,0003,0004,00040 F50 F60 F70 FSATURATES 2,500 FT ABOVE THE STATION, AT 49.5 FTEMPERATURE 63.0 FDEW POINT 52.0 FSPREAD 11.0 FRELATIVE HUMIDITY 67 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 POINTTITLEMc Kinney, the airSTATION REPORT · ASOS TKITYPECHARTSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 1 of 4DATE2026-10-16IDSR-TKI-1DRAWN AS linework on paperSOURCES FB-WAT-002, FB-ENG-011, FB-ENG-005

The column

At 587 ft above sea level, 2 per cent of the atmosphere's air lies below the station. The standard atmosphere puts the pressure there at 29.29 inHg and the temperature at 56.9 F; the station's altimeter setting of 30.27 inHg means its barometer reads 29.63 inHg; it reports 63.0 F, 6.1 F warmer than standard.

Section from sea level of where Mc Kinney stands in the atmosphere, height to scale: the station 587 feet above sea level with 2 per cent of the air below it; the standard atmosphere's pressure there, 29.29 inches of mercury, and temperature, 56.9 degrees Fahrenheit; the altimeter setting of 30.27 and the station pressure it means, 29.63.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT TKIFIG. D WHERE MC KINNEY 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 ATMOSPHEREMC KINNEY2 PER CENT OF THE AIR BELOW IT587 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 HERE29.29 inHgSTANDARD TEMPERATURE HERE56.9 FALTIMETER SETTING, REPORTED30.27 inHgITS BAROMETER READS29.63 inHgTEMPERATURE, REPORTED63.0 FTITLEMc Kinney, the columnSTATION REPORT · ASOS TKITYPESECTIONSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 2 of 4DATE2026-10-16IDSR-TKI-2DRAWN AS linework on paperSOURCES FB-ENG-001, FB-ENG-003

The sun

On Oct 16 the noon sun stands 48 degrees above the horizon at 33.18 N, and the day is 11 h 12 min long. Level ground there takes 74 per cent of the noon sunlight a surface facing the sun would.

Elevation of the noon sun at Mc Kinney, angles true: on Oct 16 it stands 48 degrees above the horizon, against 80 at the June solstice, 57 at the equinoxes and 33 at the December solstice; the day is 11 h 12 min long.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT TKIFIG. E THE SUN AT MC KINNEYELEVATION 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 80°EQUINOXES 57°DECEMBER SOLSTICE 33°OCT 16, 48°SOUTHANGLES TRUE; THE RAYS ARE OF ONE LENGTH AND DRAW DIRECTION ONLYDAY LENGTH 11 H 12 MINLEVEL GROUND TAKES 74 PER CENT OF THE NOON SUN A FACING SURFACE WOULDLATITUDE 33.18 N; THE SUN'S DECLINATION -9.1°TITLEMc Kinney, the sunSTATION REPORT · ASOS TKITYPEELEVATIONSCALEANGLES TRUEREVAS REPORTED SHEET 3 of 4DATE2026-10-16IDSR-TKI-3DRAWN AS linework on paperSOURCES FB-ENG-007

The full report of Mc Kinney, in 4 sheets, each beside the Field Book plates that explain it

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Snow on the ground

Elsewhere in Texas

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

Near McKinney

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

Near McKinney

River and lake gauges