Noise map
Sobral noise map
The Sossego Index estimates the noise of each neighbourhood from the traffic, airports, railways and local sources mapped in OpenStreetMap. 37 neighbourhoods of Sobral were rated. The city average is 74, Calm. The quietest neighbourhood is Cidade Pedro Mendes Carneiro, scoring 100, and the loudest is Junco, scoring 53.
Map of the neighbourhoods of Sobral
Each dot is a neighbourhood, coloured by its index. Click to open its page.
What explains the ranking
The roads that most often set the noise of a neighbourhood are Avenida Senador Fernandes Távora (arterial road, in 8 neighbourhoods), BR-222;BR-403 (expressway, in 7 neighbourhoods) and Avenida José Euclides Ferreira Gomes (arterial road, in 5 neighbourhoods).
No neighbourhood has an airport close enough to weigh on the index.
At night, with less traffic, the city average rises to 87. 24 neighbourhoods are above the 50 dB(A) that NBR 10151 sets at night for residential areas; by day, 26 are above 55 dB(A).
Sobral neighbourhoods ranked
From quietest to loudest. Click a neighbourhood for details.
| # | Neighbourhood | Index | Night | Rating | Main road |
|---|---|---|---|---|---|
| 1 | Cidade Pedro Mendes Carneiro | 100 | 100 | Very calm | Avenida Cleto Ferreira da Ponte (arterial road, 1 km) |
| 2 | Nossa Senhora de Fátima | 100 | 100 | Very calm | Rua Francisco Glauber Dieb Lima (residential street, 22 m) |
| 3 | Novo Recanto | 100 | 100 | Very calm | Rua João Paulo II (main local road, 62 m) |
| 4 | Nova Caiçara | 95 | 100 | Very calm | Rua Juriti (residential street, 23 m) |
| 5 | Antônio Carlos Belchior | 90 | 100 | Very calm | Avenida Osvaldo Bezerra de Arruda (main local road, 101 m) |
| 6 | Cidade Doutor José Euclides Ferreira Gomes | 90 | 100 | Very calm | Avenida Ministro César Cals (collector road, 158 m) |
| 7 | Jerônimo de Medeiros Prado | 89 | 100 | Very calm | Rua Erlândio de Paula Gomes (residential street, 46 m) |
| 8 | Vila União | 87 | 100 | Very calm | Rua José Ribamar (residential street, 13 m) |
| 9 | Colina | 85 | 99 | Very calm | Avenida José Euclides Ferreira Gomes (arterial road, 352 m) |
| 10 | Renato Parente | 82 | 100 | Calm | Avenida Prefeito José Euclides Ferreira Gomes Júnior (collector road, 212 m) |
| 11 | Juazeiro | 81 | 97 | Calm | BR-222;BR-403 (expressway, 288 m) |
| 12 | COHAB I | 80 | 99 | Calm | Rua Caetano Figueiredo (collector road, 160 m) |
| 13 | Domingos Olímpio | 78 | 93 | Calm | Rua Manoel Marinho de Andrade (main local road, 143 m) |
| 14 | Parque Silvana | 78 | 97 | Calm | Avenida José Euclides Ferreira Gomes (arterial road, 348 m) |
| 15 | Padre Ibiapina | 77 | 89 | Calm | Avenida Senador José Ermírio de Moraes (arterial road, 432 m) |
| 16 | Jatobá | 75 | 91 | Calm | BR-222;BR-403 (expressway, 222 m) |
| 17 | Alto da Brasília | 74 | 93 | Calm | Rua José Menescau Machado de Andrade (collector road, 171 m) |
| 18 | Jocely Dantas de Andrade Torres | 74 | 93 | Calm | Rua Comandante Maurocélio Rocha Pontes (main local road, 76 m) |
| 19 | COHAB II | 73 | 88 | Calm | Rua Caetano Figueiredo (collector road, 31 m) |
| 20 | Dom José | 73 | 83 | Calm | Avenida Senador José Ermírio de Moraes (arterial road, 305 m) |
| 21 | Padre Palhano | 70 | 82 | Calm | BR-222;BR-403 (expressway, 217 m) |
| 22 | Sumaré | 70 | 79 | Calm | BR-222;BR-403 (expressway, 509 m) |
| 23 | Várzea Grande | 69 | 84 | Active | Avenida Maria da Conceição Pontes de Azevedo (collector road, 75 m) |
| 24 | Dom Expedito | 68 | 85 | Active | Avenida Monsenhor Aloísio Pinto (arterial road, 161 m) |
| 25 | Vila São Vicente de Paulo | 68 | 87 | Active | Avenida Senador Fernandes Távora (arterial road, 151 m) |
| 26 | Alto da Rolinha | 66 | 82 | Active | Avenida Senador Fernandes Távora (arterial road, 229 m) |
| 27 | Cidade Gerardo Cristino de Menezes | 64 | 83 | Active | Avenida Monsenhor Aloísio Pinto (arterial road, 250 m) |
| 28 | Expectativa | 64 | 83 | Active | Avenida José Euclides Ferreira Gomes (arterial road, 184 m) |
| 29 | Pedrinhas | 63 | 74 | Active | Rua Othon de Alencar (arterial road, 169 m) |
| 30 | Alto do Cristo | 62 | 71 | Active | Rua Sancho Canafístula (arterial road, 213 m) |
| 31 | Sinhá Saboia | 62 | 80 | Active | Avenida Senador Fernandes Távora (arterial road, 159 m) |
| 32 | Coração de Jesus | 61 | 76 | Active | Avenida José Euclides Ferreira Gomes (arterial road, 132 m) |
| 33 | Centro | 60 | 79 | Active | Travessa do Xerez (collector road, 5 m) |
| 34 | Campo dos Velhos | 57 | 71 | Active | Avenida Doutor José Arimatéia Monte e Silva (arterial road, 37 m) |
| 35 | Distrito Industrial | 55 | 63 | Active | BR-222;BR-403 (expressway, 290 m) |
| 36 | Edmundo Monte Coelho | 55 | 63 | Active | Avenida Senador José Ermírio de Moraes (arterial road, 709 m) |
| 37 | Junco | 53 | 73 | Active | Avenida Dona Noeme Dias Ibiapina Antunes (main local road, 18 m) |
Most exposed schools and hospitals
97 schools and 11 hospitals in Sobral scored with the same model, the most exposed to noise first.
See the rankingQuestions about noise in Sobral
Which is the quietest neighbourhood of Sobral?
Cidade Pedro Mendes Carneiro, with Sossego Index 100 out of 100. The road that weighs most there is Avenida Cleto Ferreira da Ponte, 1 km from the centre of the neighbourhood.
Which is the loudest neighbourhood of Sobral?
Junco, with Sossego Index 53. The main source of noise is the traffic on Avenida Dona Noeme Dias Ibiapina Antunes, 18 m from the centre of the neighbourhood.
What is the average noise level of Sobral?
The average of the 37 neighbourhoods is 74 out of 100, Calm, about 58 dB(A) by day. At night the average rises to 87.
What is the noise limit in Sobral?
The national technical reference is NBR 10151: 55 dB(A) by day and 50 at night in mixed, mostly residential areas, 50 and 45 near schools and hospitals, 60 and 55 in commercial areas. Municipal noise ordinances may set different hours and limits; check with the city.
How was the noise of each neighbourhood calculated?
The Sossego Index is an estimate made with an acoustic model over OpenStreetMap data: roads by type, railways, airports and local sources. Each neighbourhood gets the median of nine points around its centre. It is not a sound level meter measurement. The full methodology, with the validation against measurements, is on the How it works page.
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.