Neighbourhood noise map
Mato Alto, Gravataí
Sossego Index 96 out of 100: Very calm. Ranked 22 of the 157 neighbourhoods rated in Gravataí. That is above the city average of 76.
Very low noise. The quiet of a far residential area or a green space.
Inside the neighbourhood the index runs from 69 to 100. Some corners are much louder than others, usually next to the avenues.
The roads that weigh most on the noise of the neighbourhood are Freeway (motorway, 698 m), Rua Brasília (residential street, 43 m) and Rua São Paulo (residential street, 76 m).
The nearest airport is an unnamed airfield (small), 5.7 km away. Far enough to barely count.
Day and night
By day the estimate is 50 dB(A), index 96. At night, with less traffic, it drops to 43 dB(A), index 100. It is within the NBR 10151 references for residential areas (55 dB(A) by day and 50 at night).
What makes up the index
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The closest neighbourhoods and their scores.
- Bela Vista456 m away93
- Antonio Gomes Correa1.1 km away50
- Dona Mercedes1.2 km away53
- Santa Rita de Cássia1.3 km away59
- Porto Seguro1.3 km away52
- Sítio do Sobrado1.3 km away48
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.