KALN — St Louis Rgnl
Alton/St Louis, IL · field elevation 544 ft · Class D airspace · ATCT
KALN current weather
VFR ceiling above 3,000 ft and visibility better than 5 statute miles
METAR KALN 111150Z 20010KT 10SM CLR 25/23 A2997
- Wind
- from 200° at 10 kt
- Visibility
- 10 statute miles
- Sky
- clear below 12,000 ft
- Temperature
- 25 °C / dewpoint 23 °C
- Altimeter
- 29.97 inHg
- Density altitude
- 1,798 ft · pressure altitude 494 ft
- Observed
- 25 minutes ago
Wind on each runway
Wind 200° at 10 kt. Positive is a headwind; the crosswind side is the one you hold into.
| Runway | Head / tail | Crosswind |
|---|---|---|
| 17 | 9 kt head | 5 kt from the right |
| 11 | 1 kt head | 10 kt from the right |
| 29 | 1 kt tail | 10 kt from the left |
| 35 | 9 kt tail | 5 kt from the left |
48-hour trend
Eight days of observations, each readable in full — in the EFB →
Calculators: density altitude, pressure altitude, cloud base, crosswind
Forecast
No TAF is issued for KALN — forecasters write them for about 700 US terminals, and this is not one.
MOS model forecasts for KALN — in the EFB →
Airport information
- Coordinates
- 38.88992, -90.04600
- Elevation
- 544 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
- 1110Z / 0100Z
- Tower hours
- 0700-2200
- Magnetic variation
- -1° (2010)
- Fuel
- 100LL,A
- Sectional
- St Louis
- County
- Madison, IL
Airport diagram
Everything else KALN publishes — in the EFB →
Runways
| Runway | Length (ft) | Width (ft) | Surface | Lights |
|---|---|---|---|---|
| 11/29 | 8,099 | 150 | ASPH | HIGH |
| 17/35 | 6,500 | 100 | ASPH | MED |
Frequencies
- ATIS
- 128.0
- Tower 0700-2200
- 126.0
- Ground
- 120.2
- Clearance WHEN TWR CLSD
- 120.2
- CTAF
- 126.0
- UNICOM
- 122.95
- Approach
- 124.2
Published procedures
- 8 approaches — ILS, LD, LOC, RNAV (GPS), VOR
- 4 departures published
- 2 arrivals published
Read the approach plates georeferenced — in the EFB →
Nearby airports
- KSTL St Louis Lambert Intl17 nm
- KSET St Charles County Rgnl/Smartt Fld18 nm
- KCPS St Louis Downtown20 nm
- KBLV Scott AFB/Midamerica St Louis23 nm
- KSUS Spirit Of St Louis31 nm
- KSAR Sparta Community-Hunter Fld47 nm
Elsewhere
- Make a poster of the KALN airport diagram or an approach plate
- Other Illinois 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.