St Louis Downtown Airport (KCPS) Aviation Weather: METAR, TAF & ATIS
As of 7:53 AM CDT, Oct 27, KCPS is currently VFR with calm winds, visibility 8 statute miles, and no ceiling reported.
Live aviation weather for St Louis Downtown Airport in Cahokia/St Louis, IL, including METAR, TAF, ATIS, flight category, wind, visibility, ceiling, altimeter and runway crosswinds.
St Louis Downtown Airport (KCPS) is a general aviation airport serving pilots in and around Cahokia/St Louis, IL at a field elevation of 413 ft. KCPS reports its own METAR and publishes a TAF, decoded live on this page as flight category, wind, visibility, ceiling and altimeter. It has 3 physical runways (05/23, 12L/30R, 12R/30L), the longest 7,002 ft. The official FAA airport diagram is at the bottom of the page.
Wind calm, visibility 8 statute miles, no cloud data, temperature 8°C (47°F), altimeter 30.26 inHg. Conditions are Visual Flight Rules (VFR).
METAR KCPS 271253Z 00000KT 8SM CLR 08/08 A3026 RMK AO2 SLP249 T00830083 $
What changed at KCPS?
Since the 1153Z (6:53 AM CDT) report, compared automatically against the latest METAR.
- Shallow fog ended (MIFG).
Current pilot readout for KCPS
KCPS is currently VFR with calm winds, visibility 8 statute miles, and no ceiling reported. Density altitude is approximately -700 ft (field elevation 413 ft). Review the latest TAF below for forecast changes before departure.
KCPS by the numbers
What the long-run records say about flying here, computed for this airport alone.
KCPS reported VFR in 83% of daylight observations over 20 years, about 259 flyable days a year. June is the most reliable month and December the least, with IFR or worse 9% of the time. When conditions drop it is usually a mix of low ceilings (under 1,000 ft 4% of hours) and low visibility (under 3 miles 3%).
Over 20 years of hourly winds, the southeast-facing ends (12L, 12R) had the best headwind 34% of the time, the northwest-facing ends (30L, 30R) 27%, and winds were calm 23% of hours. Winds most often blow from the south-southeast. Crosswind on the best available runway topped 15 kt in under 1% of hours.
Thunderstorms were reported on about 48 days a year. 50% of storm hours fall in May, June and July, peaking in June when storms were in the air 2% of the time.
Snow fell on about 18 days a year and freezing rain or drizzle on 4. From December to February KCPS was IFR or worse 10% of the time, against 3% from June to August.
Field elevation is 413 ft, but on a median summer afternoon the air performs like 2,225 ft, 1,812 ft higher. Plan for a longer takeoff roll and a weaker climb from June to August.
Gusts showed up in 12% of hours, typically 8 kt above the steady wind, and the strongest credible gust on record was 67 kt. March is the windiest month (mean 8 kt) and August the calmest.
Sources: hourly observations 2006 to 2025 and the per-runway wind climatology 2006 to 2025. Historical summaries, not a forecast: check the current METAR, TAF and a briefing before flight.
New to aviation weather? How to read a METAR → · What VFR/MVFR/IFR mean → · Decode any METAR/TAF → · Density altitude calculator →
Runway wind check
Estimated head/tailwind and crosswind for each runway end from the current reported wind.
Current wind is calm: calm wind is not a factor for runway selection, and with no wind there is no head/tail or crosswind component to compute. Live numbers return automatically once a report includes a wind direction.
| Runway | Length | Surface | Head / Tail | Crosswind |
|---|---|---|---|---|
| 05 | 2,799 ft | ASPH-F | - | - |
| 12L | 5,301 ft | CON | - | - |
| 12R | 7,002 ft | ASP | - | - |
| 23 | 2,799 ft | ASPH-F | - | - |
| 30L | 7,002 ft | ASP | - | - |
| 30R | 5,301 ft | CON | - | - |
Open the crosswind calculator to try your own wind and runway numbers →
KCPS runways
3 physical runways · 6 runway ends. Each card opens the runway's intelligence page: equipment and lighting, LAHSO, frequencies, today's configuration, predicted use, history and approaches.
- Closed (NOTAM)Runway 05/232,799 × 75 ft · ASPH-FCurrent useno stated-runway source at KCPSWind
- 05
- no steady wind
- 23
- no steady wind
no active equipment NOTAM receivedView Runway Intelligence → - Closed (NOTAM)Runway 12L/30R5,301 × 75 ft · CONCurrent useno stated-runway source at KCPSWind
- 12L
- no steady wind
- 30R
- no steady wind
no active equipment NOTAM receivedView Runway Intelligence → - Closed (NOTAM)Runway 12R/30L7,002 × 150 ft · ASPCurrent useno stated-runway source at KCPSWind
- 12R
- no steady wind
- 30L
- no steady wind
no active equipment NOTAM receivedView Runway Intelligence →
“Current use” is what the facilitystates; wind components are arithmetic on the current METAR against TRUE headings; status reflects NOTAMs received through SWIM, the tower's TFDM record and the D-ATIS — a runway reads “Open” only with a complete NOTAM picture.
Fuel at KCPS
100LL and Jet A at St Louis Downtown Airport: prices, FBO fees and cheaper fuel nearby now live on the KCPS fuel page.
Lowest 100LL
$9.85/ galFull serve · Jet Aviation
Guaranteed price, checked todayCurrent
1 fuel provider · Jet A from $9.16
Fuel information has moved: view KCPSfuel & FBOs for every FBO’s prices, ramp and overnight fees, cheaper 100LL nearby, price history and pilot fuel reports.
24-hour trend
Wind, ceiling and flight category over the last 24 hours.
Over the last 23 h: wind 0→0 kt, ceiling unlimited → unlimited.
KCPS weather radar
Live NEXRAD + lightning, with a 4-hour future-radar forecast. Drag to pan, tap ⚡ to toggle lightning.
Radar: NOAA/NWS via IEM · Forecast: NOAA HRRR · Lightning: NOAA · Map © Stadia Maps © OpenMapTiles © OpenStreetMap
NOAA NEXRAD composite and lightning, updated about every five minutes; amber frames are HRRR model guidance, not observed radar. Not for navigation.
Pilot reports (PIREPs) within 100 NM of KCPS
Reported by pilots in flight over the past 6 hours, via aviationweather.gov.
Show raw report
TBN UA /OV MAP/TM 1207/FL280/TP B38M/TB OCNL MOD CHOP/RM ZKC FDC FN
TBN UAHeader: reporting station and UA: a routine pilot report.OV MAPLocation: fix or navaid, optionally with a radial and distance in NM.TM 1207Reported at 12:07 UTC.FL280Altitude: 28,000 ft MSL.TP B38MAircraft type reporting.TB OCNL MOD CHOPTurbulence: occasional moderate chop.RM ZKC FDC FNRemarks.Show raw report
VIH UA /OV VIH/TM 1201/FL160/TP E170/TB MOD 160-190/RM ZKC FDC FN
VIH UAHeader: reporting station and UA: a routine pilot report.OV VIHLocation: fix or navaid, optionally with a radial and distance in NM.TM 1201Reported at 12:01 UTC.FL160Altitude: 16,000 ft MSL.TP E170Aircraft type reporting.TB MOD 160-190Turbulence: moderate 16,000–19,000 ft.RM ZKC FDC FNRemarks.⚠️ PIREPs are unverified pilot reports. Not for operational use: conditions change between reports.
Recent aviation weather trends at KCPS
From ATIS Alerts' hourly weather history.
Over the past 24 hours, KCPS reported mostly VFR across 28 observations, with 5 flight-category changes. Wind most often came from the SE.
Most recent change: IFR → VFR
Most recent change: MVFR → VFR
Share of hours each runway had the most headwind. From wind reports, not ATC assignments.
- 12L/12R
- 27%
- 05
- 25%
- 30L/30R
- 25%
- 23
- 23%
TAF | Terminal Aerodrome Forecast
Issued 1120Z (6:20 AM CDT)
TAF KCPS 271120Z 2712/2812 16004KT P6SM BKN250
New to TAFs? How to read one →
Get KCPS weather alerts in Telegram
Stop refreshing aviation weather manually. Track KCPS in ATIS Alerts and get notified when a new METAR changes the picture: a category drop, or wind and ceiling moving toward your minimums.
Track KCPS free on TelegramLive KCPS Weather
Live crosswind meter
Measured by KCPS's own weather station.
Wind is calm or variable. Either end works.
Asphalt · 7,002 ft. Headings from FAA runway data. Not for navigation.
Field aerial
North up
Runway 05/23, 12L/30R, 12R/30L drawn from FAA threshold coordinates.
Imagery: USGS The National Map (public domain). Something off? ✏️ Suggest an edit
Fuel prices
KCPS 100LL, FBOs and fees.
100LL from
$9.85 / gal · Full serve
1 fuel provider · Guaranteed price, checked today
View fuel prices & FBOs →Airport info
From the FAA airport record (cycle 2026-10-01) and OurAirports.
Services
- Fuel
- 100LL · Jet A See fuel prices →
- Attended
- 24 hours
- Repairs
- Airframe & engine, major
- Oxygen
- Bulk, high pressure
- Transient parking
- Tie-downs · Hangars
- Landing fee
- No
- Other services
- Charter · Flight instruction · Aircraft rental · Aircraft sales
- Control tower
- Yes
- Wind indicator
- Lighted
Airport
- Type
- General aviation airport
- ICAO
- KCPS
- IATA
- CPS
- FAA LID
- CPS
- City
- Cahokia/St Louis
- State
- Illinois
- Country
- United States
- Elevation
- 413 ft
- Coordinates
- 38.5707, -90.1562
- Runways
- 3 physical runways · 6 runway ends
- Longest runway
- 7,002 ft
- Weather reporting
- Reports METAR
- TAF
- Published
- ATIS
- 121.45 MHz
- CTAF
- 119.925 MHz
- Time zone
- America/Chicago
- Sunset in
- 9h 38m
Run a flight school, FBO, or club here? Embed KCPS's live status on your website, free →
Nearby airports
Compare nearby METAR/TAF stations within 25, 50 and 100 NM before departure or arrival.
Within 25 NM
9 airports+3 more within 25 NM
25–50 NM
9 airports+3 more within 50 NM
50–100 NM
6 airportsRC flying fields nearby
AMA model-aircraft club fields around this airport: live wind, crosswind & flyability on each page.
- Columbia R/C Flying Club Inc - Bluff Rd , Columbia, IL · 10 mi
- Midwest Air Wing R/C Club - Bruns Rd , Pontoon Beach, IL · 10 mi
- Belleville RC Flyers 1 , Belleville, IL · 14 mi
Historical Flying Weather at KCPS
2006–2025 · ATIS Alerts Flying Weather Index
Based on historical observations from 2006–2025, KCPS reported VFR conditions during about 82.5% of valid daylight observations, with an estimated 259 VFR flying days a year. June had the most VFR weather; December had the most instrument conditions. Surface winds averaged 5.9 kt, calm 19.4% of the time.
Full historical breakdown
Flight category by month
| Month | VFR % | MVFR % | IFR % | LIFR % |
|---|---|---|---|---|
| Jan | 68.7 | 20.5 | 7.6 | 3.2 |
| Feb | 74.2 | 17.3 | 6.6 | 1.9 |
| Mar | 77.5 | 16.7 | 4.6 | 1.2 |
| Apr | 85.2 | 10.7 | 3.4 | 0.8 |
| May | 85.6 | 10.4 | 3.2 | 0.8 |
| Jun | 91.7 | 6.4 | 1.6 | 0.3 |
| Jul | 90.5 | 6.3 | 2.3 | 0.9 |
| Aug | 88.7 | 8.3 | 2.3 | 0.7 |
| Sep | 85.4 | 9.6 | 3.5 | 1.5 |
| Oct | 83.6 | 10.8 | 4.5 | 1.1 |
| Nov | 79.1 | 14.2 | 4.8 | 2.0 |
| Dec | 67.4 | 23.3 | 6.7 | 2.6 |
Average wind by month
| Month | Mean wind (kt) |
|---|---|
| Jan | 7.2 kt |
| Feb | 7.4 kt |
| Mar | 7.6 kt |
| Apr | 7.3 kt |
| May | 5.7 kt |
| Jun | 4.9 kt |
| Jul | 4.2 kt |
| Aug | 4.0 kt |
| Sep | 4.1 kt |
| Oct | 5.5 kt |
| Nov | 6.3 kt |
| Dec | 6.6 kt |
Historical summary of past observations: not a forecast or safety rating. Always check the current METAR, TAF, and a weather briefing before flight.
KCPS airport diagram
Official FAA taxiway and runway layout. Tap to zoom.
Official FAA airport diagram · d-TPP cycle 2611 · Not for navigation. Download the official FAA PDF ↗
Customize your CPS shirt or mug
CPS's real runway layout on the back, elevation and tower frequency on the front. Add your tail number on the sleeve.
Pilot PIREPs for St Louis Downtown Airport (KCPS)
Community-submittedCommunity-submitted airport notes from pilots about runway conditions, wildlife, FBOs, fuel, turbulence, ramp access, and local tips.
Read recent community-submitted pilot notes for St Louis Downtown Airport, including runway conditions, wildlife activity, FBO/fuel notes, turbulence, ramp access, and local airport tips.
⚠️ Pilot PIREPs on ATIS Alerts are community-submitted airport notes for situational awareness only. They are not official FAA PIREPs, NOTAMs, weather briefings, airport advisories, or flight-planning guidance. Always verify with official FAA/NWS sources, airport management, ATC, and current publications.
No Pilot PIREPs have been submitted for KCPS yet. Recently flew here? Help the next pilot by leaving a quick airport note.
Pilot PIREPs are community pilot notes for situational awareness only, not official FAA PIREPs or advisories. Verify with official sources. Notes are moderated before they appear; helpful marks and reports help us keep them useful.
⚠️ Not for operational use. Always verify with official FAA-approved preflight weather sources before flight.
No D-ATIS at this airport, showing METAR.
Spotted incorrect airport info? ✏️ Suggest an edit