Airports / KM90 / William Robert Johnston Municipal AirportModerate 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

▲ 0.0%

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 1 days · 0 total

NORMAL

Current weather

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

50m ago

Temp

70°F

Wind

8 kts

230°

Visib

10+ km

Ceil

—

KFAT 122153Z 23008KT 10SM SCT065 BKN100 21/04 A2987 RMK AO2 SLP114 T02110044 $

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

76% of ops

16 land · 0 TO

24% of ops

5 land · 0 TO

Runway 33 carries 76% of operations (16 landings, 0 takeoffs) over the last 30 days. The next most-used is 15 at 24%.

Approach quality

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

33 16 landings

UA 0%

15 5 landings

UA 0%

Approaches to 33 show a 0% unstable-approach rate (0 UA events from 16 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

0.8

flights/day · 25 total

Busy hour (local)

6pm

also 7pm · 12am

Day vs night

48%

06:00–20:00 local

Traffic concentrates around 12am–6pm local, averaging 0.8 flights/day. Weekend volume runs 1.0× weekday (0.9 vs 0.9 daily).

Aircraft character

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

4 · 16%

2 · 8%

1 · 4%

Activity is led by (16% of 25 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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