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Castle Hills, Texas

City in Bexar County, Texas

Air quality

The air at Castle Hills

Index 29, good, led by ozone. Read at 7 AM from its reporting area, San Antonio (TX), 7 miles off.

29Good
  • Fine particles (PM2.5)13Good-
  • Ozone29Good15 ppb6 mi
  • Coarse particles (PM10)7Good-

The days ahead

Good each day through Sun Oct 18, led by ozone. Yesterday measured 47, good.

Smoke, the next 43 hours

No smoke near the ground through Sun 1 AM.

FriSat

Precipitation

What has fallen at Castle Hills

None in the last 3 days, to Fri 6 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 Castle Hills, the next 43 hours

Visibility stays 10 miles or more through Sun 1 AM.

FriSat

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

What is measuring near here

The 5 instruments nearest Castle Hills, how far away each one is, how high it stands, and what kind of measurement it makes. The nearest is 0.4 miles away.

measured now3 instruments

measured daily2 instruments

San Antonio 4.2 NNWTX-BXR-328

In a volunteer observer's own ground/0.4 mi away/795 ft/45 ft below here

precip, snowfall, snow depth

Rank-

BoerneBONT2

At a cooperative observer's station/23.4 mi away/1,450 ft/610 ft above here

snowfall, snow depth, precip, high, low

Rank2,972of 4,689

Station report

The weather at San Antonio, drawn

The nearest airport reporting now, 3.0 mi from Castle Hills, Texas. From its report of Oct 16, 2026, 6:51 AM local time: 3 of its 6 sheets.

The sky

Broken at 1,800 ft, overcast at 25,000 ft; the ceiling is 1,800 ft; visibility 10 mi or more.

Section of the sky over San Antonio, height above the station to scale: broken cloud with its base at 1,800 feet, overcast cloud with its base at 25,000 feet, the ceiling at 1,800 feet, and visibility of 10 mi or more.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT SATFIG. A THE SKY OVER SAN ANTONIOSECTION, 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 STATION05,00010,00015,00020,00025,00030,00035,00040,000ETAGESLOWMIDDLEHIGHTHE STATIONTHE CEILOMETER READS TO 12,000 FTOVC 25,000 FTOVERCAST, 8 EIGHTHS OF THE SKYBKN 1,800 FTBROKEN, 5 TO 7 EIGHTHS OF THE SKYCEILING 1,800 FTVISIBILITY, MILES: 10 MI OR MORE0510TITLESan Antonio, the skySTATION REPORT · ASOS SATTYPESECTIONSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 1 of 6DATE2026-10-16IDSR-SAT-1DRAWN AS linework on paperSOURCES FB-SKY-001, FB-SKY-017, FB-SKY-016, FB-SKY-018, FB-SKY-010, FB-SKY-011, FB-SKY-012

The air

66.0 F with a dew point of 58.0 F, 75 per cent relative humidity. Air lifted from the station would cool to its dew point, where cloud forms, about 1,900 ft up; the lowest cloud reported is at 1,800 ft.

Chart of the air at San Antonio: temperature 66.0 degrees Fahrenheit and dew point 58.0, 75 per cent relative humidity; air lifted from the station cools along the dry rate and meets its dew point about 1,900 feet above the station, against the lowest cloud reported at 1,800 feet; height to scale.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT SATFIG. B THE AIR AT SAN ANTONIOTHE REPORTED TEMPERATURE AND DEW POINT, AND AIR LIFTED FROM THE STATION WITHOUT MIXING UNTIL IT SATURATES; HEIGHT ABOVE THE STATION TO SCALEFT ABOVE THE STATION01,0002,0003,00050 F60 F70 F80 FSATURATES 1,900 FT ABOVE THE STATION, AT 56.1 FLOWEST CLOUD REPORTED, BKN 1,800 FTTEMPERATURE 66.0 FDEW POINT 58.0 FSPREAD 8.0 FRELATIVE HUMIDITY 75 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 POINTTITLESan Antonio, the airSTATION REPORT · ASOS SATTYPECHARTSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 2 of 6DATE2026-10-16IDSR-SAT-2DRAWN AS linework on paperSOURCES FB-WAT-002, FB-ENG-011, FB-ENG-005

The wind

From the north (350 degrees) at 22 mph, gusting 36 mph: force 5, a fresh breeze on the Beaufort scale. The strongest gust today was 38 mph.

Plan of the wind at San Antonio, north up: blowing from 350 degrees, the north, at 22 miles an hour, gusting 36; beside it the Beaufort scale from calm to hurricane force, force 5, fresh breeze, marked.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT SATFIG. C THE WIND AT SAN ANTONIOPLAN, NORTH UP: THE WIND AS REPORTED, AND WHERE IT SITS ON THE BEAUFORT SCALENESWTHE STATIONFROM 350°BEAUFORT FORCELEAST WIND, MPH0CALM01LIGHT AIR12LIGHT BREEZE43GENTLE BREEZE84MODERATE BREEZE135FRESH BREEZE19NOW, 22 MPH6STRONG BREEZE257NEAR GALE32GUST, 36 MPH8GALE399STRONG GALE4710STORM5511VIOLENT STORM6412HURRICANE FORCE73TITLESan Antonio, the windSTATION REPORT · ASOS SATTYPEPLAN north upSCALENOT TO SCALEREVAS REPORTED SHEET 3 of 6DATE2026-10-16IDSR-SAT-3DRAWN AS linework on paperSOURCES FB-EVT-150, FB-ENG-008, FB-INS-002

The full report of San Antonio, in 6 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 Castle Hills

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

Near Castle Hills

River and lake gauges