WxDecoder

US-9019 Weather Williams Flat Helipad

Azusa, CaliforniaElevation 1,860 ftHeliport
OFF-FIELD REFERENCE
Nearest report: KPOC · 9 NM S · More than 1 hour old
No ceiling, visibility 10 SM.
No on-field report, so no field flight category. Conditions at the field may differ.
OFF-FIELD REFERENCE · KPOC
WIND
250@12
steady
VISIBILITY
10 SM
16.1 km
CEILING
None
no BKN/OVC layer
FORECAST & PILOT NOTES · SUPPLEMENTAL

Extended forecast and pilot notes

No aviation METAR is published for this airport. The nearest National Weather Service station reports wind from 341° at 2 kt. This observation is older than usual, so treat it with extra caution. Treat this as supplemental, not an aviation observation. Forecast suggests tonight mostly clear, low near 51F, 0% chance of precipitation. Key risks: no significant hazards are highlighted right now, but always confirm against an official briefing.

DayConditionsTemp FWindGustsPrecipPilot note
Tonight Mostly Clear 51 WNW 4 kt – 0%
Monday Sunny 80/50 WSW 4 kt – 0%
Tuesday Sunny 79/50 SW 4 kt – 0%
Wednesday Mostly Sunny 78/51 SSW 4 kt – 1%
Thursday Mostly Cloudy 69/49 S 4 kt – 11%
Friday Slight Chance Rain Showers 65/48 SSW 4 kt – 18%
Saturday Slight Chance Rain Showers 63/47 S 4 kt – 80%
Sunday Rain Showers 60 SSW 4 kt – 80%

Source: National Weather Service (office LOX). Forecast issued 0349Z.

Radar

Radar data: NOAA/NWS MRMS composite reflectivity. For situational awareness only, not a substitute for an official weather briefing.

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RUNWAYS & WIND
Crosswind calculator
No runway layout is available for US-9019. Enter a runway number or heading to estimate wind components.
FIELD CONDITIONS

Field elevation

Field elevation
1,860 ft MSL

Density and pressure altitude need a current temperature and altimeter from the METAR.

DAYLIGHT & NIGHT

Sun & logging windows

Sunset
0105Z 6:05 PM
Sunrise
1405Z 7:05 AM
Loggable night
0130Z (6:30 PM local) → 1339Z (6:39 AM local)
end of evening to start of morning civil twilight
Position lights required
0105Z (6:05 PM local) → 1405Z (7:05 AM local)
sunset to sunrise (91.209)
Night passenger currency
0205Z (7:05 PM local) → 1305Z (6:05 AM local)
1 hr after sunset to 1 hr before sunrise (61.57(b))

FAA definitions, shown in Zulu with airport-local time. Verify for your operation.

AIRPORT INFORMATION

Facility & services

Williams Flat Helipad is in Azusa, California. Field elevation 1,860 ft MSL. Airport facts are drawn from OurAirports and the FAA NASR dataset.

OPERATIONS & CONTACT
TypeHeliport
CHARTS & AIRSPACE
ICAO / IATAUS-9019
RegionCalifornia
CountryUnited States
Coordinates34.2339, -117.7986
SERVICES & LIGHTING
Control towerNon-towered
AIRCRAFT ACTIVITY

US-9019 traffic patterns

2026-07-19 to 2026-07-19, 1 days observed · data 2026-10-23

Insufficient confidence
TRAFFIC VOLUME (30-DAY)
AVG LANDINGS/DAY
1
AVG OPS/DAY
1
Operations trend (1 days)

Busiest day: Sun · Busiest month: Jul

FLEET MIX
Helicopter 100%

Mostly rotorcraft.

TOP AIRCRAFT TYPES
›H60 (Helicopter) · ~1 landings/mo
Data limitations (4)
›ADS-B coverage is incomplete; counts are an observed lower bound, not official totals.
›Some aircraft do not transmit usable ADS-B and are not counted.
›Aircraft types and based estimates are inferred and may be wrong.
›This is not official ATC, FAA, or airport data.
NEARBY AIRPORTS

Weather reference stations

US-9019 has no on-field report. Nearest reporting station: KPOC (9 NM S, VFR).

KPOC Brackett Field
9 NM S
VFR
KCCB Upland-Cable Airport
9 NM SE
VFR
KONT Ontario International Airport
15 NM SE
VFR
KEMT San Gabriel Valley Airport
15 NM SW
VFR
KCNO Chino Airport
18 NM SE
VFR
KFUL Fullerton Municipal Airport
24 NM SW
VFR
OFFICIAL LINKS & SOURCES
↗Search NOTAMs (official FAA NOTAM Search)
↗US-9019 on OurAirports
FREQUENTLY ASKED
Does US-9019 have a METAR?
No on-field METAR is issued for US-9019. This page uses the nearest reporting station as a reference.
Does US-9019 have a TAF?
No TAF is issued directly for US-9019. Use the nearest TAF-issuing field as a planning reference.
What is the field elevation at US-9019?
US-9019 sits at 1,860 ft MSL, which factors into the density-altitude estimate on this page.
Is this an official preflight weather briefing for US-9019?
No. wxdecoder.com is for education and situational awareness only. It is not an official weather briefing or a substitute for official sources, NOTAM review, and pilot judgment.
This app is for aviation weather education, training, and situational awareness only. It is not a substitute for an official weather briefing, approved flight-planning software, flight service, dispatch procedures, current FAA regulations, or pilot judgment. Always verify weather with official sources before flight.