Neighbourhood noise map
Fonseca, Niterói
Sossego Index 60 out of 100: Active. Ranked 61 of the 65 neighbourhoods rated in Niterói. That is below the city average of 84.
Moderate, steady noise, typical of mixed neighborhoods with shops and busy streets.
Inside the neighbourhood the index runs from 31 to 96. Some corners are much louder than others, usually next to the avenues.
The roads that weigh most on the noise of the neighbourhood are Alameda São Boaventura (expressway, 240 m), Rua Desembargador Lima Castro (collector road, 299 m) and Rua Riodades (main local road, 178 m). Traffic is the main source of noise.
The nearest airport is Aeroporto Santos Dumont (regional), 8.6 km away. Far enough to barely count.
Nearby local sources: Riodades A (247 m).
Day and night
By day the estimate is 63 dB(A), index 60. At night, with less traffic, it drops to 55 dB(A), index 81. It is above the NBR 10151 reference for residential areas (55 dB(A) by day and 50 at night) in both periods.
What makes up the index
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Test an address in FonsecaNeighbouring areas
The closest neighbourhoods and their scores.
- Engenhoca1.4 km away77
- Viçoso Jardim1.5 km away91
- Tenente Jardim1.5 km away92
- Cubango1.8 km away87
- Caramujo2.2 km away93
- Baldeador2.2 km away82
How to read this index
The Sossego Index runs from 0 to 100 and is an estimate built from open data, not an on-site measurement. 100 means 48 dB(A) or less, the level of a calm residential area. 0 means 86 dB(A) or more, the level of a heavy traffic avenue. Each neighbourhood's value is the median of nine points around its centre.
Read the full methodologyOpenStreetMap data, computed on October 21, 2026.