Neighbourhood noise map
Portelinha, São Luís
Sossego Index 74 out of 100: Calm. Ranked 105 of the 323 neighbourhoods rated in São Luís. That is above the city average of 70.
Low noise most of the day. You can sleep with the window open.
Inside the neighbourhood the index runs from 28 to 81. Some corners are much louder than others, usually next to the avenues.
The road with the biggest weight in the noise is BR-135 (expressway), 72 m from the centre of the neighbourhood. Traffic is the main source of noise.
The nearest airport is Aeroporto Internacional Marechal Cunha Machado (international), 19.7 km away. Far enough to barely count.
There is a railway line 907 m away. Nearby local sources: Ferrovia Transnordestina (907 m), Estrada de Ferro Carajás (1.4 km).
What makes up the index
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The closest neighbourhoods and their scores.
- Piçarreira270 m away68
- Cajueiro531 m away73
- Vila Rica826 m away67
- Inhaúma1.4 km away58
- Estiva1.7 km away59
- Novo Horizonte1.8 km away66
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 19, 2026.