KBDU Boulder Muni

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. ADS-B tracking just started here — traffic history is still building.

certainty: — evidence: NONE no tower now

Wind 190° true at 3 kt · VFR · 34 min old · from KAPA (33.6 nm away)

▶ Listen live — ATIS/CTAF on LiveATC opens LiveATC’s own player · verify the broadcast yourself

8 35% 4100 ft · 0 kt TAIL, 3 kt x-right · calm-wind rwy

26 22% 4100 ft · 0 kt head, 3 kt x-left · right traffic

26G 22% 4100 ft · 0 kt head, 3 kt x-left · right traffic

08G 21% 4100 ft · 0 kt TAIL, 3 kt x-right

Active NOTAMs affecting runways

LIGHTING RWY 26 until 10-28 20:00Z

RWY 26 PAPI U/S

Why — evidence behind this answer

Runway 8

PRIOR 8 is the designated calm-wind runway +0.50
WIND 1 kt TAILWIND, 3 kt right crosswind 34 min ago -0.04

Runway 26

WIND 1 kt headwind, 3 kt left crosswind 34 min ago +0.00

Runway 26G

WIND 1 kt headwind, 3 kt left crosswind 34 min ago +0.00

Runway 08G

WIND 1 kt TAILWIND, 3 kt right crosswind 34 min ago -0.04

Sources consulted

source	status	age	note
D_ATIS	UNAVAILABLE		No D-ATIS at this field
METAR	OK	34 min	Nearest station KAPA (33.6 nm away)
ADSB	WARMING_UP	1 min	Only 4 min of track history so far
NOTAM	OK
CIFP	NOT_CONFIGURED		Instrument procedures: phase 4

Recent operations

No operations observed in the last hour. (Only 4 min of track history so far)

Was this right?

KBDU field & runways

Boulder Muni, Boulder, Colorado. Field elevation 5288 ft. Non-towered (NON-ATCT). Magnetic variation 12.0°E on record, 7.6°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 0.081°/year west — about 1° every 12 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
08G	90.0°	82.4°	—	4,100 ft	ASPH-TURF	left
26	270.0°	262.3°	matches rule gives runway 27 in ~33 yr	4,100 ft	ASPH	right
26G	270.0°	262.4°	—	4,100 ft	ASPH-TURF	right
8	90.0°	82.3°	matches rule gives runway 9 in ~33 yr	4,100 ft	ASPH	left	calm-wind DEP TURN BLW 512 FT NA. 40-60 FT TREES RESULT IN 27 DEG OBST CLNC SLOPE TO DTHR. RWY 08 CALM WIND RWY.

What KBDU usually does

Of 1,833 operations this service has observed at KBDU since 2026-08-25:

08G 43% 796 ops
8 43% 793 ops
26G 7% 122 ops
26 7% 122 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 12:26:54Z · auto-refreshes · JSON

KBDU ☆ Boulder Muni