100.0% of night alerts are arrivals — runway 02 approach path crosses Lisbon at 160m altitude. TAP Air Portugal operated 4,802 flights (48% of total), including 708 at night. Sound meter read low 13–23 October (microphone cable fault, strongest 16–19 Oct): loud events and alerts in that window are undercounted. New enclosure and two-point calibration on 24 October.
LPPT Lisbon · Independent monthly observation
Noise Report October 2026
10,024Observed flights
90 dBAverage SPL reading
102.8 dBHighest reading
1,308Night operations
Measurement note. From 13 to 23 October the sound meter read too low (a loose contact in the microphone cable, then a replacement cable with a faulty ground), most strongly on 16–19 October: loud events and alerts in that period are undercounted, and the values were not corrected. On 24 October the station moved into its new enclosure with a two-point calibration (94.0 / 113.8 dB). Details: Archive, Data Quality tab.
Independent observations from one fixed residential terrace. These figures are not official airport totals or certified airport noise mapping.
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