KHYI — San Marcos Rgnl
Austin, TX · field elevation 595 ft · Class D airspace · ATCT
1 AIRMET & SIGMET Read in the EFB →
KHYI current weather
VFR ceiling above 3,000 ft and visibility better than 5 statute miles
SPECI KHYI 111210Z 18005KT 9SM SCT018 25/24 A3010 RMK AO2
- Wind
- from 180° at 5 kt
- Visibility
- 9 statute miles
- Sky
- sct, no ceiling
- Temperature
- 25 °C / dewpoint 24 °C
- Altimeter
- 30.10 inHg
- Density altitude
- 1,700 ft · pressure altitude 415 ft
- Observed
- 9 minutes ago
Wind on each runway
Wind 180° at 5 kt. Positive is a headwind; the crosswind side is the one you hold into.
| Runway | Head / tail | Crosswind |
|---|---|---|
| 17 | 5 kt head | — |
| 13 | 3 kt head | 4 kt from the right |
| 26 | — | 5 kt from the left |
| 08 | — | 5 kt from the right |
| 31 | 3 kt tail | 4 kt from the left |
| 35 | 5 kt tail | — |
48-hour trend
Eight days of observations, each readable in full — in the EFB →
Calculators: density altitude, pressure altitude, cloud base, crosswind
Pilot reports
3 within 50 nm in the last six hours, 1,900–36,000 ft.
Read them where they were filed — in the EFB →
Forecast
No TAF is issued for KHYI — forecasters write them for about 700 US terminals, and this is not one.
MOS model forecasts for KHYI — in the EFB →
Airport information
- Coordinates
- 29.89275, -97.86300
- Elevation
- 595 ft MSL
- Surface airspace
-
Class D
Two-way radio communication must be established before you enter, while the tower is open.
The same callsign rule as Class C. When the tower closes the airspace usually reverts to Class E, or to Class G where no surface area is charted — the Chart Supplement entry says which, and the hours are on the sectional. A surface area normally extends to 2,500 ft above the field, with the ceiling charted in a dashed blue box as a number in hundreds of feet.
- Sunrise / sunset
- 1157Z / 0116Z
- Tower hours
- 0700-2100 EFF 01 APR 2021
- Magnetic variation
- 7° (1985)
- Fuel
- 100LL,A+
- Sectional
- San Antonio
- County
- Caldwell, TX
Airport diagram
Everything else KHYI publishes — in the EFB →
Runways
| Runway | Length (ft) | Width (ft) | Surface | Lights |
|---|---|---|---|---|
| 08/26 | 6,330 | 100 | ASPH | MED |
| 13/31 | 5,601 | 100 | ASPH | MED |
| 17/35 | 5,214 | 100 | ASPH | MED |
Frequencies
- ATIS
- 120.825
- Tower 0700-2100 EFF 01 APR 2021
- 126.825
- Ground
- 120.125
- Clearance WHEN HYI TWR CLSD
- 121.35
- Clearance
- 120.125
- CTAF
- 126.825
- Approach
- 119.0
Published procedures
- 7 approaches — LS, RNAV (GPS)
- 7 departures published
- 4 arrivals published
Read the approach plates georeferenced — in the EFB →
Nearby airports
- KBAZ New Braunfels Ntl15 nm
- KSEQ Randolph AFB Aux20 nm
- KAUS Austin-Bergstrom Intl21 nm
- KRND Randolph AFB31 nm
- KEDC Austin Exec34 nm
- KRYW Lago Vista Tx/Rusty Allen37 nm
Elsewhere
- Make a poster of the KHYI airport diagram or an approach plate
- Other Texas airports
- How to read a METAR
- What VFR, MVFR, IFR and LIFR actually mean
- Live records — the strongest winds and lowest ceilings in the country right now
Weather from METAR and TAF, National Weather Service Aviation Weather Center. Airport, runway, frequency and procedure data from the FAA NASR 28-day cycle; charts from the FAA d-TPP. Advisory only — this is not a weather briefing.