Sensitivity map

Schools and hospitals most exposed to noise in São Luís

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 724 schools and 46 hospitals with a name in OpenStreetMap in São Luís, with the same model used for the neighbourhoods, at the point of each one.

schools

698 / 724

698 of 724 (96%) sit at points whose daytime estimate is above 50 dB(A); at night, 673 are above 45 dB(A). Average: 61.2 dB(A) by day.

hospitals

46 / 46

46 of 46 (100%) sit at points whose daytime estimate is above 50 dB(A); at night, 46 are above 45 dB(A). Average: 63.7 dB(A) by day.

The 30 most exposed schools

Name	Neighbourhood	dB(A) day	night	Index	Road that weighs most
Centro de Ensino de Educação de Jovens e Adultos	Canto da Fabril	74	67	31	Avenida Camboa (arterial road, 10 m)
Ueb Ens Fund Gomes De Sousa	Vila Maranhão	74	68	31	Avenida Engenheiro Emiliano Macieira (expressway, 27 m)
Centro de Ensino Estado do Mato Grosso	Forquilha	74	67	32	Estrada da Maioba (arterial road, 10 m)
Centro de Ensino Fernando Perdigão	Monte Castelo	74	67	33	Avenida Getúlio Vargas (arterial road, 13 m)
Centro de Ensino Grau Técnico	Canto da Fabril	73	66	34	Avenida Getúlio Vargas (arterial road, 15 m)
UEB Ens. Fund. Rosário Nina	Bairro de Fátima	73	66	35	Avenida dos Africanos (arterial road, 15 m)
Centro Educacional Vitoria E Ji Vovo Bebe	Vila Itamar	72	67	36	BR-135 (expressway, 91 m)
Ce Arco Iris	Jardim SM II	72	65	36	Avenida Daniel de La Touche (arterial road, 33 m)
EC Tia Valdecira	Residencial Aroeiras	72	65	36	Avenida José Sarney (arterial road, 20 m)
Instituto Daniel de La Touche	Vila São Francisco	72	66	37	Avenida Marechal Castelo Branco (arterial road, 18 m)
Centro Educa Mais Dr. Luiz Sérgio Cabral Barreto		72	65	37	Rodovia MA-204 (arterial road, 28 m)
Esc Especializada Liza Maria	Bairro de Fátima	72	64	37	Rua Deputado João Henrique (collector road, 4 m)
Centro Educa Mais Força Aérea Brasileira	Tirirical	72	65	37	Avenida José Sarney (arterial road, 36 m)
Data Control	Cohab Anil	72	64	37	Avenida Cinco (collector road, 10 m)
Centro de Ensino Professora Maria do Socorro Almeida	Tirirical	72	65	38	Avenida José Sarney (arterial road, 37 m)
Creche Escola Travessuras de Criança	Centro	72	64	38	Rua do Sol (collector road, 4 m)
Unidade de Educação Básica Bilíngue - Língua Brasileira de Sinais (Libras) e Língua Portuguesa Escrita	Vila Bangu	72	65	38	Avenida Camboa (arterial road, 36 m)
Centro Educacional Nossa Senhora de Nazaré - CENAZA	Jardim das Margaridas	71	64	38	Avenida Contorno Leste (collector road, 10 m)
EM Parque Jair	Residencial Ivan Sarney	71	64	38	Avenida General Arthur Carvalho (arterial road, 13 m)
Centro de Ensino Professora Rosa Castro	Vila Alexandra Tavares	71	65	39	Avenida Metropolitana (arterial road, 45 m)
Centro Educacional Santa Maria Ltda	São Francisco	71	64	39	Avenida Coronel Colares Moreira (arterial road, 33 m)
Colégio Imperial	Canto da Fabril	71	64	39	Rua Oswaldo Cruz (arterial road, 15 m)
UEB Ens. Fund. Maria Rocha	Bairro de Fátima	71	64	40	Avenida dos Africanos (arterial road, 21 m)
Escola Diante do Aprender	Cohama	71	64	40	Avenida Daniel de La Touche (arterial road, 29 m)
Ce Nosso Futuro	Vila Real	71	64	40	Avenida Tibiri (collector road, 13 m)
UEB Ens. Fund. Elzuíla Abreu	Turu	71	64	40	Avenida São Luís Rei de França (arterial road, 25 m)
Instituto de Educação Juju e Cacaia - Tu és uma Bênção	Vila Geniparana	71	63	40	Avenida Jailson Sousa Viana (collector road, 8 m)
UI Felipe Conduru	Tirirical	71	64	40	Avenida Guajajaras (arterial road, 36 m)
Colégio Master	Filipinho	71	64	41	Avenida João Pessoa (arterial road, 27 m)
Centro Educa Mais Salustiano Trindade	Conjunto Reviver	71	63	41	Estrada de São José de Ribamar (arterial road, 25 m)

The 30 most exposed hospitals

Name	Neighbourhood	dB(A) day	night	Index	Road that weighs most
Farmacia Globo	Cidade Operária	74	67	31	Avenida Duzentos e Três (arterial road, 10 m)
Farmacia Pague menos	Cidade Operária	70	63	43	Avenida Arterial Interna (collector road, 13 m)
Hospital Aldenora Bello	Monte Castelo	69	62	44	Avenida Getúlio Vargas (arterial road, 36 m)
Hospital da Mulher	Alto da Vitória	69	63	44	Avenida dos Portugueses (expressway, 45 m)
Ibirapuera Hospital e Maternidade	Parque Aurora	69	62	44	Avenida Contorno Leste (collector road, 13 m)
Hospital da Visão	Vila do Gordo	69	62	45	Avenida Principal (arterial road, 33 m)
Hospital Guarás	Bom Milagre	69	61	46	Avenida Kennedy (arterial road, 45 m)
UPA - Cidade Operária	Cidade Operária	68	61	47	Avenida Principal (arterial road, 47 m)
Hospital da Zona Rural	Vila Sarney	68	64	48	BR-135 (expressway, 107 m)
Maternidade Benedito Leite	Planalto Anil IV	67	60	50	Avenida Jerônimo de Albuquerque (arterial road, 54 m)
iMedical	Vila Cristalina	67	60	50	Avenida Daniel de La Touche (arterial road, 64 m)
Maternidade Marly Sarney	Cohab Anil	67	59	51	Avenida Jerônimo de Albuquerque (arterial road, 68 m)
Clínica Santo André	Cohatrac	67	59	51	Avenida Leste Oeste (collector road, 20 m)
Hospital do Câncer do Maranhão Doutor Tarquínio Lopes Filho	Goiabal	66	60	52	Avenida Senador Vitorino Freire (arterial road, 69 m)
Natus Lumine	Jardim Paulista	66	59	52	Avenida dos Holandeses (arterial road, 59 m)
Hospital Materno-Infantil	Vila Bangu	66	59	52	Ponte Bandeira Tribuzi (arterial road, 91 m)
Centro de Saúde Salomão Fiquene	Cohatrac	66	58	52	Avenida Leste Oeste (collector road, 29 m)
Hospital Dr. Raimundo Lima	Monte Castelo	66	59	53	Avenida Getúlio Vargas (arterial road, 63 m)
POSTO DE SAÚDE	Bairro de Fátima	66	58	53	Rua Deputado João Henrique (collector road, 25 m)
Hospital da Criança Doutor Odorico Amaral de Matos	Alemanha	66	59	54	Avenida dos Franceses (arterial road, 74 m)
Hemomar	Vila da Paz	65	58	55	Avenida São Marçal (arterial road, 86 m)
UDI Hospital	Jaracati	65	58	55	Avenida Professor Carlos Cunha (arterial road, 65 m)
Hospital São Domingos	Cantinho do Céu	65	58	55	Avenida Jerônimo de Albuquerque (arterial road, 73 m)
UPA - Araçagi	Brisa do Mar	64	57	58	Avenida dos Holandeses (arterial road, 77 m)
Hospital Doutor Carlos Macieira	Jardim Renascença	64	57	59	Avenida Jerônimo de Albuquerque (arterial road, 101 m)
Hospital Nina Rodrigues	Monte Castelo	64	57	58	Avenida Getúlio Vargas (arterial road, 91 m)
Hospital Universitário da UFMA - HU-UFMA	Vila Bangu	64	56	59	Avenida Beira Mar (arterial road, 139 m)
Hospital Sarah	Residencial Jackson Lago	63	56	61	Avenida Quarto Centenário (arterial road, 108 m)
Centro de Saúde Genésio Rêgo	Vila Palmeira	62	55	62	Avenida dos Franceses (arterial road, 110 m)
Centro Médico Maranhense	Monte Castelo	62	55	62	Avenida Getúlio Vargas (arterial road, 140 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 São Luís

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.