KCNO Chino

UNKNOWN

Unknown — not enough evidence to call a runway

We don't know, and saying so beats guessing. No D-ATIS feed here — a voice ATIS/AWOS may exist; check the frequency. Wind calm — no directional preference.

certainty: — evidence: NONE Class D

Wind calm · VFR · 44 min old · from KAJO (5.2 nm away)

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26R 22% 4858 ft

3 20% 4919 ft · right traffic

21 19% 4919 ft

8R 15% 7000 ft · right traffic

26L 13% 7000 ft

8L 11% 4858 ft · right traffic

Active NOTAMs affecting runways

APCH OTS RWY 26R until 03-24 17:47Z

IAP CHINO, CHINO, CA.
ILS OR LOC RWY 26R, AMDT 8B...
PROCEDURE NA EXCEPT FOR ACFT EQUIPPED WITH SUITABLE RNAV SYSTEM WITH GPS.
HDF VOR OUT OF SERVICE AND RAL VOR R-255 THRU 265 UNUSABLE.
2608121747-2703241747EST

Why — evidence behind this answer

Runway 26R

PRIOR 26R used 49% of the time in this wind bin (n=329) -0.07
PRIOR runway length 4858 ft -0.03

Runway 3

PRIOR 3 used 2% of the time in this wind bin (n=329) -0.18
PRIOR runway length 4919 ft -0.02

Runway 21

PRIOR 21 used 2% of the time in this wind bin (n=329) -0.24
PRIOR runway length 4919 ft -0.02

Runway 8R

PRIOR 8R used 5% of the time in this wind bin (n=329) -0.51
PRIOR runway length 7000 ft +0.05

Runway 26L

PRIOR 26L used 33% of the time in this wind bin (n=329) -0.70
PRIOR runway length 7000 ft +0.05

Runway 8L

PRIOR 8L used 8% of the time in this wind bin (n=329) -0.81
PRIOR runway length 4858 ft -0.03

Sources consulted

source	status	age	note
D_ATIS	UNAVAILABLE		No D-ATIS at this field
METAR	OK	44 min	Nearest station KAJO (5.2 nm away)
ADSB	OK	16 min	MODERATE
NOTAM	OK
CIFP	NOT_CONFIGURED		Instrument procedures: phase 4

Recent operations

No operations observed in the last hour.

Was this right?

KCNO field & runways

Chino, Chino, California. Field elevation 650 ft. Class D airspace. Towered. Magnetic variation 14.0°E on record, 11.2°E today.

The FAA's variation of record is the number this field was surveyed against; the second is where north points now, from WMM2025. It is moving 0.078°/year west — about 1° every 13 years — which is why runway numbers eventually stop matching their pavement.

Runway data from the FAA NASR 01 Oct 2026 cycle. Where NASR locates both thresholds, the true heading is the bearing between them rather than NASR's whole-degree alignment. Magnetic is that heading against *today's* declination from WMM2025, not the field's variation of record — so it can differ from the chart by the gap between the two shown above. The number painted on the runway is the one ATC uses.
Runway	True	Magnetic	Number	Length	Surface	Pattern	Notes
21	224.3°	213.1°	matches rule gives runway 22 in ~25 yr	4,919 ft	ASPH	left
26L	269.4°	258.2°	matches	7,000 ft	ASPH
26R	269.4°	258.2°	matches	4,858 ft	ASPH	left	ILS
3	44.3°	33.1°	matches rule gives runway 4 in ~25 yr	4,919 ft	ASPH	right
8L	89.4°	78.2°	matches	4,858 ft	ASPH	right
8R	89.4°	78.2°	matches	7,000 ft	ASPH	right

What KCNO usually does

Of 6,304 operations this service has observed at KCNO since 2026-08-24:

26L 45% 2840 ops
26R 43% 2703 ops
8L 6% 358 ops
8R 4% 231 ops
21 2% 131 ops
3 1% 41 ops

Observed by this service only — not an FAA statistic, and biased toward the hours and days it has been watching. It is shown because it is the same history the engine learns its local-convention prior from.

Generated 08:40:24Z · auto-refreshes · JSON

KCNO ☆ Chino