Airports / KM90 / William Robert Johnston Municipal AirportModerate ground coverage
⚡ Upgrade for 1yr history
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
1
25.0%
DEP / DAY
0
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. SkyMeter has observed roughly 1 arrivals and 0 departures per day on average over the last 7 days.

Current weather

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

21m ago
Temp
71°F
Wind
5 kts
320°
Visib
10+ km
Ceil
KFAT 160653Z 32005KT 10SM FEW200 22/08 A2985 RMK AO2 SLP103 T02170083

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

33
69% of ops
25 land · 0 TO
15
31% of ops
11 land · 1 TO
Runway 33 carries 69% of operations (25 landings, 0 takeoffs) over the last 30 days. The next most-used is 15 at 31%.

Approach quality

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

33 25 landings
UA 0%
15 11 landings
UA 0%
Approaches to 33 show a 0% unstable-approach rate (0 UA events from 25 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
0.9
flights/day · 27 total
Busy hour (local)
6pm
also 5pm · 4pm
Day vs night
74%
06:00–20:00 local
Traffic concentrates around 4pm–6pm local, averaging 0.9 flights/day. Weekend volume runs 2.1× weekday (1.5 vs 0.7 daily).

Aircraft character

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

Activity is led by (15% of 26 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
© SkyMeter · All flight data subject to ODbL attribution · Updated 07:14 UTC