1
Runway
1
Frequency
0
Procedures
0
NOTAMs
Quick Facts
ICAO
KM90
FAA
M90
Elevation
162 ft MSL
Runways
1
Frequencies
1
Tower
No
Fuel
N/A
Coordinates
36.759, -120.371
Airport Information
Facility Type
AIRPORT
Elevation
162 ft MSL
Control Tower
No
Fuel Types
None listed
ARTCC
OAKLAND
Coordinates
36.7586, -120.3710
Ownership
Public
Hours of Operation
Current Weather
METAR KMAE 272255Z AUTO 33008KT 10SM CLR 27/10 A2990 RMK AO2 SLP119 T02720100 $
Flight Category
VFR
Wind
330° at 8 kt
Visibility
10+ SM
Temperature
27.2°C
Dewpoint
10°C
Altimeter
1012.60 inHg
Cloud Cover
CLR
Nearest weather from KMAE (21 NM away)
Observed 2026-06-27 22:55Z
Nearby Weather Cameras
No camera at KM90. Showing nearest cameras.
Mt Helen
North · Camera 1 · 4 cameras total
47 NM away
Parkfield
North · Camera 1 · 4 cameras total
50 NM away
12 camera angles available
See all cameras, directions, and nearby airport cameras
Sign up free to view all cameras →Runways
| ID | Length | Width | Surface | Lights |
|---|---|---|---|---|
| 15/33 | 3,499 ft | 50 ft | ASP | - |
Frequencies
| Type | Frequency | Name |
|---|---|---|
| CTAF | 122.9 | CTAF |
Active NOTAMs
No active NOTAMs for KM90.
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KM90 Operational Overview
Location & Facility
William Robert Johnston Municipal Airport (KM90) is a publicly owned airport open to the public located in Mendota, California, United States. The field sits at an elevation of 162 feet above mean sea level (MSL) at coordinates 36.7586°N, 120.3710°W.
Runways
William Robert Johnston Municipal Airport has 1 runway. The longest runway (15/33) measures 3,499 feet by 50 feet with a asp surface.
Communications & Operations
William Robert Johnston Municipal Airport is a non-towered (pilot-controlled) field. A total of 1 communication frequencies are published for this facility.
Weather Cameras
3 FAA Weather Cameras are available near William Robert Johnston Municipal Airport, providing real-time visual weather conditions updated every 10 minutes. AeroCopilot integrates these cameras with AI-powered weather analysis to help pilots assess visibility and ceiling conditions before departure.
Current Conditions
The current flight category at William Robert Johnston Municipal Airport is VFR (Visual Flight Rules — good flying conditions). Weather conditions are updated in real-time from official NOAA Aviation Weather Center observations.
Frequently Asked Questions
What is KM90?
KM90 is the ICAO identifier for William Robert Johnston Municipal Airport, a public-use airport located in Mendota, California, United States.
How many runways does William Robert Johnston Municipal Airport have?
William Robert Johnston Municipal Airport (KM90) has 1 runway. See the runway table above for dimensions and surface types.
What is the elevation of KM90?
The field elevation of William Robert Johnston Municipal Airport is 162 feet above mean sea level (MSL).
Is fuel available at KM90?
No fuel types are currently listed for William Robert Johnston Municipal Airport. Contact the FBO directly for availability.
What are the current weather conditions at KM90?
The current flight category at William Robert Johnston Municipal Airport is VFR. See the METAR section above for full decoded weather data including wind, visibility, temperature, and altimeter.
Are there active NOTAMs at KM90?
There are currently no active NOTAMs for William Robert Johnston Municipal Airport.
How do I access complete data for KM90?
Sign up for a free AeroCopilot account to access all frequencies, full NOTAM text with AI interpretation, decoded forecasts, and IFR procedure charts for William Robert Johnston Municipal Airport.
Where is William Robert Johnston Municipal Airport located?
William Robert Johnston Municipal Airport (KM90) is located in Mendota, California, United States, at an elevation of 162 ft MSL.
Does KM90 have weather cameras?
KM90 does not have a direct weather camera, but there are nearby cameras within range. Sign up for AeroCopilot to view all nearby airport cameras.