1
Runway
1
Frequency
0
Procedures
0
NOTAMs
Quick Facts
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, -120.3714
Ownership
Public
Hours of Operation
Current Weather
METAR KNLC 230556Z 29008KT 10SM CLR 19/04 A2977 RMK AO2 SLP079 T01890044 10350 20189 51018 $
Flight Category
VFR
Wind
290° at 8 kt
Visibility
10+ SM
Temperature
18.9°C
Dewpoint
4.4°C
Altimeter
1008.20 inHg
Cloud Cover
CLR
Nearest weather from KNLC (36 NM away)
Observed 2026-05-23 05:56Z
Nearby Weather Cameras
No camera at M90. Showing nearest cameras.
Mt Helen
South · Camera 3 · 4 cameras total
47 NM away
Parkfield
SouthEast · Camera 3 · 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 | ASPH | - |
Frequencies
| Type | Frequency | Name |
|---|---|---|
| CTAF | 122.9 | WILLIAM ROBERT JOHNSTON MUNI |
Active NOTAMs
No active NOTAMs for M90.
Nearby Airports in California
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Hanford — 223 ft
CL25
7R RANCH
CUYAMA — 3,176 ft
CL25
7R Ranch Airport
New Cuyama — 3,176 ft
7CA1
ABRAHAM RANCH
LUCERNE VALLEY — 2,850 ft
7CA1
ABRAHAM RANCH
LUCERNE VALLEY — 2,850 ft
Aciero Farms Landing Field
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52CL
ADELANTO
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Adelanto Airport
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Nearest airports
- null — 3H Cattle Company Airport
Hanford
- CL25 — 7R RANCH
CUYAMA
- CL25 — 7R Ranch Airport
New Cuyama
- 7CA1 — ABRAHAM RANCH
LUCERNE VALLEY
- 7CA1 — ABRAHAM RANCH
LUCERNE VALLEY
California airports
M90 Operational Overview
Location & Facility
WILLIAM ROBERT JOHNSTON MUNI (M90) 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, 120.3714°W.
Runways
WILLIAM ROBERT JOHNSTON MUNI has 1 runway. The longest runway (15/33) measures 3,499 feet by 50 feet with a asph surface.
Communications & Operations
WILLIAM ROBERT JOHNSTON MUNI 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 MUNI, 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 MUNI 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 M90?
M90 is the ICAO identifier for WILLIAM ROBERT JOHNSTON MUNI, a public-use airport located in MENDOTA, California, United States.
How many runways does WILLIAM ROBERT JOHNSTON MUNI have?
WILLIAM ROBERT JOHNSTON MUNI (M90) has 1 runway. See the runway table above for dimensions and surface types.
What is the elevation of M90?
The field elevation of WILLIAM ROBERT JOHNSTON MUNI is 162 feet above mean sea level (MSL).
Is fuel available at M90?
No fuel types are currently listed for WILLIAM ROBERT JOHNSTON MUNI. Contact the FBO directly for availability.
What are the current weather conditions at M90?
The current flight category at WILLIAM ROBERT JOHNSTON MUNI is VFR. See the METAR section above for full decoded weather data including wind, visibility, temperature, and altimeter.
Are there active NOTAMs at M90?
There are currently no active NOTAMs for WILLIAM ROBERT JOHNSTON MUNI.
How do I access complete data for M90?
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 MUNI.
Where is WILLIAM ROBERT JOHNSTON MUNI located?
WILLIAM ROBERT JOHNSTON MUNI (M90) is located in MENDOTA, California, United States, at an elevation of 162 ft MSL.
Does M90 have weather cameras?
M90 does not have a direct weather camera, but there are nearby cameras within range. Sign up for AeroCopilot to view all nearby airport cameras.