Airports / KM90 / William Robert Johnston Municipal AirportPoor ground coverage

William Robert Johnston Municipal Airport satellite view

📍 Mendota⬆ 162 ft1 runways

KM90 ·

William Robert Johnston Municipal Airport

36.75860°N

-120.37100°W

ARR / DAY

▼ 100.0%

DEP / DAY

▼ 50.0%

William Robert Johnston Municipal Airport (KM90) is a small general aviation airport located in Mendota, CA, 33 mi west of Fresno. It features 1 runway measuring 3,499 feet.

Safety incidents

Last 7 days · 0 total

NORMAL

Current weather

From KFAT, 36 mi away (KM90 does not publish METAR)

48m ago

Temp

78°F

Wind

6 kts

290°

Visib

10+ km

Ceil

—

KFAT 261553Z 29006KT 10SM FEW140 FEW190 SCT260 26/09 A2998 RMK AO2 SLP149 T02560094 $

Runways

1 installed

3,499 FT MAX

15/33

3,499 ft × 50

ASP● LIT

Runway intelligence

Which runway carries the operations, observed over the last 30 days

65% of ops

39 land · 0 TO

35% of ops

21 land · 0 TO

Runway 33 carries 65% of operations (39 landings, 0 takeoffs) over the last 30 days. The next most-used is 15 at 35%.

Approach quality

Per-runway unstable-approach, go-around, and long-rollout rates

33 39 landings

UA 0%

15 21 landings

UA 0%

Approaches to 33 show a 0% unstable-approach rate (0 UA events from 39 landings).Phase B will add wind-correlation: which crosswind band produces most UA events.

Traffic behavior

When the field is busy: hourly + weekday vs weekend

Daily avg

1.0

flights/day · 30 total

Busy hour (local)

12am

also 4pm · 5pm

Day vs night

50%

06:00–20:00 local

Traffic concentrates around 12am–5pm local, averaging 1.0 flights/day. Weekend volume runs 1.0× weekday (1.0 vs 1.0 daily).

Aircraft character

What's actually flying here: top types over the last 30 days

3 · 10%

2 · 7%

Activity is led by (10% of 30 flights). Top three types: , , .

Communications Frequencies

2026-06-11

Type	Freq (MHz)	Hours
CTAF	122.900	—

Airport operations

ARTCC:: ZOA
Elevation:: 162 ft
Mag var:: 15° E

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