Sensitivity map

Schools and hospitals most exposed to noise in Gravataí

NBR 10151 sets 50 dB(A) by day and 45 at night as the reference for school and hospital areas, below the 55 dB(A) of residential areas. We scored 157 schools and 5 hospitals with a name in OpenStreetMap in Gravataí, with the same model used for the neighbourhoods, at the point of each one.

schools

148 / 157

148 of 157 (94%) sit at points whose daytime estimate is above 50 dB(A); at night, 137 are above 45 dB(A). Average: 58.7 dB(A) by day.

hospitals

5 / 5

5 of 5 (100%) sit at points whose daytime estimate is above 50 dB(A); at night, 5 are above 45 dB(A). Average: 61.8 dB(A) by day.

The 30 most exposed schools

Name	Neighbourhood	dB(A) day	night	Index	Road that weighs most
SENAI	Paraíso	70	65	42	Rodovia Mário Quintana (expressway, 107 m)
Colégio Estadual Deoclécio Ferrugem		69	62	44	Avenida Doutor Pompílio Gomes Sobrinho (arterial road, 32 m)
Escola Estadual Júlio Cesar Ribeiro de Souza		69	63	45	Avenida Presidente Getúlio Vargas (arterial road, 40 m)
Colégio Estadual Antônio Gomes Corrêa	Parque dos Anjos	69	63	46	Freeway (motorway, 115 m)
Escola Estadual Frederico A. Ritter		67	61	49	Avenida Frederico Augusto Ritter (arterial road, 29 m)
Colégio Estadual Nicolau Chiavaro Neto	Jardim das Palmeiras	67	60	49	Avenida Marechal Hermes da Fonseca (arterial road, 46 m)
Escola Estadual Antônio de Castro Alves		67	60	49	Rua Ceará (collector road, 13 m)
Escola Municipal de Ensino Fundamental Afonso Guerreiro Lima		67	61	49	Rodovia Mário Quintana (expressway, 128 m)
Escola Municipal Papa João XXIII		67	60	49	Avenida Fernando Ferrari (arterial road, 56 m)
GENSA	Dom Feliciano	66	59	52	Avenida José Loureiro da Silva (collector road, 21 m)
Escola Estadual Marechal Mascarenhas de Moraes	Bom Princípio	66	58	52	Rua Lídio Batista Soares (collector road, 25 m)
Escola Engenheiro Rodolfo Ahrons		66	59	53	Avenida Baltazar de Oliveira Garcia (arterial road, 75 m)
Mario Quintana	Vale Ville	66	60	54	Freeway (motorway, 207 m)
Escola Josefina Becker	Dom João Becker	65	58	54	Avenida Dorival Cândido Luz de Oliveira (arterial road, 69 m)
Colégio Estadual Barbosa Rodrigues	Dom Feliciano	65	57	55	Avenida José Loureiro da Silva (collector road, 26 m)
EE Fundamental Osório		65	57	55	Rua Tiburcio de Azevedo (collector road, 18 m)
Escola Municipal Granja Esperança	Morada do Vale I	65	57	55	Rua Doutor Mário da Costa Pereira (collector road, 40 m)
Escola Municipal José Victor de Medeiros	Rondon	65	57	56	Rua Lalau Miranda (collector road, 37 m)
Colégio Êxito		65	56	57	Avenida Zero Hora (collector road, 30 m)
Escola América		64	57	57	Avenida Baltazar de Oliveira Garcia (arterial road, 93 m)
Escolinha Aprendiz	Vale Ville	64	57	57	Avenida General Flores da Cunha (arterial road, 103 m)
CADOP		64	58	58	Rua Bonifácio Carvalho Bernardes (main local road, 289 m)
Escola Municipal Alfredo José Justo		64	56	59	Avenida Ipiranga (collector road, 26 m)
Escola Municipal Emília de Oliveira		64	56	59	Rua Olegário José Guimarães (collector road, 33 m)
Escola Técnica Estadual Visconde de São Leopoldo		64	56	59	Avenida Feitoria (collector road, 21 m)
INEDI	Vale Ville	64	56	59	Rua Lídio Batista Soares (collector road, 58 m)
Escola Adventista Cachoeirinha		63	57	60	Avenida Fernando Ferrari (arterial road, 126 m)
Escola estadual Senador Salgado Filho		63	56	59	Avenida Presidente Getúlio Vargas (arterial road, 111 m)
Escola Municipal Alcides Maia		63	56	59	Avenida Presidente Getúlio Vargas (arterial road, 101 m)
Escola Estadual Presidente Kennedy		63	56	60	Avenida João Batista Soares da Silveira e Souza (collector road, 63 m)

The 5 most exposed hospitals

Name	Neighbourhood	dB(A) day	night	Index	Road that weighs most
Hospital Dom João Becker	Centro	69	62	44	Avenida José Loureiro da Silva (arterial road, 31 m)
UPA 24h Cachoeirinha		64	56	59	Avenida Capitão Garibaldi Pinto dos Santos (collector road, 37 m)
Clínica Solaris	Condominio Paseo Centralle	62	55	62	Rua Benjamin Constant (collector road, 38 m)
Hospital Padre Jeremias	Bom Princípio	57	50	75	Avenida General Flores da Cunha (arterial road, 315 m)
Hospital de Alvorada		56	48	79	Avenida Maringá (collector road, 111 m)

An estimate at the map point, not a measurement. Buildings, walls and inner courtyards can cut the noise inside a school or hospital a lot. The list points to where measuring is worthwhile.

Noise map of Gravataí

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 methodology

OpenStreetMap data, computed on October 21, 2026.