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Aircraft noise in Northmead (2152)

Aircraft fly over Northmead roughly 24 times a day, the bulk of them arrivals at Sydney Kingsford Smith Airport, between roughly 3,000 and 5,000 ft. Helicopters and light aircraft add another 2 low overflights a day. Estimated peak ground noise reaches 73–81 dB — enough to interrupt conversation outdoors. It ranks #43 of 139 Sydney suburbs for aircraft noise exposure. (Flight Path Noise monitoring data, 90 days to 2026-08-21.)

Data: 90 days to 2026-08-21 · all tracked aircraft over Northmead · updated monthly

Overflights / day
24
busiest on Fridays
Typical altitude
4,400 ft
over the suburb
Est. peak noise
73–81 dB
under the flight path, modelled
Sydney rank
#43 / 139
louder than 70% of measured suburbs
A typical day of overflights (all sources)
First movement ~7:22amBusiest hour 5pmLast movement ~9:41pm

Where the noise comes from

Northmead hears traffic from 2 distinct sources:

Sydney Kingsford Smith Airport

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22 overflights/day (90%) · typically 4,600 ft

Northmead hears a high mix of arrivals descending from the north-west and departures climbing out, without a single defining corridor. The altitude keeps individual aircraft soft; the trade-off is that some stream or other is passing through most of the day.

Helicopters & other light aircraft

2 overflights/day (10%) · typically 600 ft

Around 2 low overflights a day come from aircraft not operating at a tracked airport — helicopters, seaplanes and light aircraft transiting the area. Light-aircraft counts are tracked overflights only — many training and private aircraft carry no ADS-B transponder, so true numbers are higher.

Light-aircraft counts are tracked overflights only — many training and private aircraft carry no ADS-B transponder, so true numbers are higher.

How nearby suburbs compare

SuburbOverflights / dayRank
Baulkham Hills36#22
North Parramatta34#26
North Rocks26#40
Northmead24#43
Winston Hills16#79
Westmead14#91

Common questions

Is Northmead under a flight path?
Yes — Northmead is under Sydney Kingsford Smith Airport flight paths, with around 24 overflights on a typical day, mostly arrivals.
Which airport's aircraft fly over Northmead?
More than one source: Sydney Kingsford Smith Airport (~22/day), other low-flying aircraft (~2/day). The breakdown above shows each source's pattern.
What time do planes start over Northmead?
The first movements typically pass over Northmead around 7:22am, once the curfew (11 PM – 6 AM) ends. Traffic builds through the morning peak.
Is it quieter in Northmead on weekends?
Slightly — weekends average about 13% fewer overflights than weekdays (23 vs 27 a day).
Do planes fly over Northmead at night?
The main airport's curfew restricts movements between 11 PM – 6 AM, so overnight overflights are rare. The last movements are typically around 9:41pm.

Checking a specific address?

This page shows suburb-wide averages. An address report gives you the exact overflight count, altitudes, hourly pattern and noise estimate for one property. Leave your email and we'll let you know when reports are ready for Northmead.

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Suburb boundaries: Australian Bureau of Statistics, Suburbs and Localities 2021, CC BY 4.0. Postcodes: GeoNames, CC BY 4.0. Flight data: ADS-B, 90-day rolling window, all tracked aircraft regardless of airport. Noise figures are modelled estimates, not measurements — how we measure.

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