Open Data Insight of the Day

This report provides an overview of urban noise levels for January 2026. Measurements were taken from three stations: Feldbergstrasse, Grenzacherstrasse, and Zuercherstrasse148. The average noise level across these stations in January 2026 was 66.3 decibels (dB), which is considered very loud. The highest single noise level recorded for the month was 93.2 dB at the Feldbergstrasse station. The maximum recorded noise level at Feldbergstrasse occurred on an unspecified date and time.

Looking at historical data for January since 2020, the average and maximum noise levels for January 2026 are consistent with past years at the Zuercherstrasse148 and Grenzacherstrasse stations. However, a notable deviation is present for the Feldbergstrasse station. The data for January 2026, 2024, and 2023 shows average and maximum values of 24.1 dB, which is significantly lower than the typical range of 69-71 dB for average noise and 90-92 dB for maximum noise seen in 2025, 2022, and 2021. This suggests potential data recording issues or exceptionally quiet conditions for those specific January periods at that location.

For the Feldbergstrasse station specifically, the highest noise level ever recorded since 2020 was 93.2 dB. The all-time lowest noise level recorded at this station was 24.1 dB. The time of day with the historically highest average noise levels at Feldbergstrasse is the afternoon period from 12:00 to 14:59, with an average of 69.5 dB. The quietest period is typically between 03:00 and 05:59, with an average of 61.4 dB.

The decibel (dB) scale is logarithmic, meaning a 10 dB increase represents a tenfold increase in sound intensity. For context, a quiet room measures around 30 dB, a normal conversation is 50–60 dB, and nearby street traffic often reaches 70–80 dB.

For more detailed information on noise monitoring and data, please refer to the official city environmental portal and the linked Wikipedia article on decibels.