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Prosser Airport (KS40) Area Aviation Weather & Runway Winds

As of 6:15 AM PDT, Oct 28, based on the nearest station (K1S5), KS40 is currently VFR with winds from 100° at 5 knots, visibility 10+ statute miles, and a 7,000 ft ceiling.

Aviation weather near Prosser Airport in Prosser, WA, decoded from the nearest reporting station (K1S5): conditions and runway crosswinds.

Prosser Airport (KS40) is a general aviation airport serving pilots in and around Prosser, WA at a field elevation of 705 ft. KS40 has no weather station of its own. Conditions here are decoded from K1S5, about 10 nm away, the nearest reporting station, and local conditions can differ. It has one runway (08/26), the longest 3,452 ft. The nearest TAF is issued for KPSC.

Ask ATIS AIAsk anything about KS40's weather, runways or delays, or search another airport.
VFR
Observed 1315Z (6:15 AM PDT)live · refreshes every 60s

No weather station at this airport: showing the nearest station K1S5, 10.1 nm away.

Wind
100° 5 kt
Visibility
10+ sm
Ceiling
7,000 ft
Altimeter
29.92"
Temp / Dew
46°F / 8°C
feels like 43°F

Wind from the east (100°) at 5 kt, visibility 10+ statute miles, scattered clouds at 4,600 ft, broken clouds at 7,000 ft, temperature 8°C (46°F), altimeter 29.92 inHg. Conditions are Visual Flight Rules (VFR), ceiling 7,000 ft.

Raw METAR
METAR K1S5 281315Z AUTO 10005KT 10SM SCT046 BKN070 08/04 A2992 RMK AO2 T00780036

What changed at K1S5 (nearest station)?

Since the 1255Z (5:55 AM PDT) report, compared automatically against the latest METAR.

No significant changes since the 1255Z (5:55 AM PDT) report, conditions are holding steady.

Current pilot readout for KS40

Based on the nearest station (K1S5), KS40 is currently VFR with winds from 100° at 5 knots, visibility 10+ statute miles, and a 7,000 ft ceiling. the wind favors east-facing runway ends (08). Density altitude is approximately 0 ft (field elevation 705 ft). KS40 does not publish a TAF. The nearest TAF station is KPSC, about 28 nm away.

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.

RunwayHead / TailCrosswind
08FAV5 kt head1 kt right
265 kt tail1 kt left

Open the crosswind calculator to try your own wind and runway numbers →

KS40 runways

1 physical runway · 2 runway ends. Each card opens the runway's intelligence page: equipment and lighting, LAHSO, frequencies, today's configuration, predicted use, history and approaches.

  • Runway 08/26
    3,452 × 61 ft · ASP
    Status not monitored
    Current use
    no stated-runway source at KS40
    Wind
    08
    5 kt headwind · 1 kt crosswind from right
    26
    5 kt tailwind · 1 kt crosswind from left
    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.

24-hour trend

Wind, ceiling and flight category over the last 24 hours.

Wind (kt)Gusts (kt)Bottom strip, flight category:VFRMVFRIFRLIFRNo report
0132613Z02Z13Z

Over the last 24 h: wind 0→5 kt, ceiling unlimited → 7,000 ft.

KS40 weather radar

Live NEXRAD + lightning, with a 4-hour future-radar forecast. Drag to pan, tap ⚡ to toggle lightning.

Loading…
Loading radar…

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 KS40

Reported by pilots in flight over the past 6 hours, via aviationweather.gov.

PIREP1256Z (5:56 AM PDT) · 79 NM SW of KS40 · 13,300 ft MSL · E75L
light chop turbulence
Show raw report
DLS UA /OV LTJ220017/TM 1256/FL133/TP E75L/SK TOP133/TB LGT CHOP/RM ZSE
DLS UAHeader: reporting station and UA: a routine pilot report.
OV LTJ220017Location: fix or navaid, optionally with a radial and distance in NM.
TM 1256Reported at 12:56 UTC.
FL133Altitude: 13,300 ft MSL.
TP E75LAircraft type reporting.
SK TOP133Sky condition: cloud bases and tops in hundreds of feet MSL.
TB LGT CHOPTurbulence: light chop.
RM ZSERemarks.
PIREP1240Z (5:40 AM PDT) · 12 NM NE of KS40 · 16,000 ft MSL · E75L
light to moderate chop turbulence
Show raw report
PSC UA /OV PSC270020/TM 1240/FL160/TP E75L/SK TOP160/TB LGT-MOD CHOP/RM ZSE
PSC UAHeader: reporting station and UA: a routine pilot report.
OV PSC270020Location: fix or navaid, optionally with a radial and distance in NM.
TM 1240Reported at 12:40 UTC.
FL160Altitude: 16,000 ft MSL.
TP E75LAircraft type reporting.
SK TOP160Sky condition: cloud bases and tops in hundreds of feet MSL.
TB LGT-MOD CHOPTurbulence: light to moderate chop.
RM ZSERemarks.
PIREP1221Z (5:21 AM PDT) · 77 NM SW of KS40 · during descent · A306
light chop turbulence
Show raw report
DLS UA /OV LTJ204015/TM 1221/FL240/TP A306/TB LGT CHOP/RM DURD HHOOD ARR-ZSE
DLS UAHeader: reporting station and UA: a routine pilot report.
OV LTJ204015Location: fix or navaid, optionally with a radial and distance in NM.
TM 1221Reported at 12:21 UTC.
FL240Altitude: 24,000 ft MSL.
TP A306Aircraft type reporting.
TB LGT CHOPTurbulence: light chop.
RM DURD HHOOD ARR-ZSERemarks.

⚠️ PIREPs are unverified pilot reports. Not for operational use: conditions change between reports.

Recent aviation weather trends at KS40

From ATIS Alerts' hourly weather history.

Over the past 24 hours, the nearest station K1S5 reported mostly VFR across 68 observations, with 0 flight-category changes. The strongest gust reached 23 kt, the lowest ceiling was 6,000 ft. Wind most often came from the SW.

Last 24 hours
VFR 100%
Wind avg/max: 5/16 kt
Max gust: 23 kt
Lowest ceiling: 6,000 ft
Lowest vis: -
Prevailing wind: SW
Category changes: 0
Last 7 days
VFR 88%MVFR 6%IFR 3%LIFR 3%
Wind avg/max: 2/13 kt
Max gust: 22 kt
Lowest ceiling: 200 ft
Lowest vis: 0.25 sm
Prevailing wind: W
Category changes: 25

Most recent change: LIFR → VFR

Wind-favored runway - past 30 days

Share of hours each runway had the most headwind. From wind reports, not ATC assignments.

26
58%
08
42%

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No live weather from KS40

Live crosswind meter

KS40's AWOS-1 isn't in the national weather feed, so the wind comes from K1S5, 10 nm away.

N08265 kt
Headwind
5 kt
Crosswind (from the right)
1 kt

Wind is 10° off runway 08, the end with the most headwind right now.

KS40's AWOS isn't online yet. Help us share it with pilots: we'll show your field's live wind and crosswind on this page, free. Share your AWOS →

Asphalt · 3,452 ft. Headings from FAA runway data. Not for navigation.

Field aerial

North up

Aerial photo of Prosser Airport (KS40) with runway 08/26 marked
N ↑

Runway 08/26 drawn from FAA threshold coordinates.

Imagery: USGS The National Map (public domain). Something off? ✏️ Suggest an edit

Airport info

From the FAA airport record (cycle 2026-10-01) and OurAirports.

Services

Fuel
100LL
Attended
Unattended
Transient parking
Tie-downs
Landing fee
No
Other services
Flight instruction
Pattern altitude
1,505 ft MSL (800 AGL)
Control tower
None
Wind indicator
Lighted

Airport

Type
General aviation airport
FAA LID
S40
City
Prosser
State
Washington
Country
United States
Elevation
705 ft
Coordinates
46.2134, -119.7910
Runways
1 physical runway · 2 runway ends
Longest runway
3,452 ft
Weather reporting
On-field AWOS-1, not in the national feed (using K1S5)
TAF
Nearest KPSC
Time zone
America/Los_Angeles
Next sunset
11h 36m

Run a flight school, FBO, or club here? Embed KS40's live status on your website, free →

Nearby airports

Compare nearby METAR/TAF stations within 25, 50 and 100 NM before departure or arrival.

VFRMVFRIFRLIFRNo report

RC flying fields nearby

AMA model-aircraft club fields around this airport: live wind, crosswind & flyability on each page.

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Pilot PIREPs for Prosser Airport (KS40)

Community-submitted

Community-submitted airport notes from pilots about runway conditions, wildlife, FBOs, fuel, turbulence, ramp access, and local tips.

Read recent community-submitted pilot notes for Prosser 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 KS40 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.

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