Ministère de l'Environnement
et de la Lutte contre les changements climatiques

The Air Quality Index (AQI)
in figures

Urban sectors, local sources and pollutants most likely to influence air quality in locations where the Air Quality Index (AQI) calculated

Urban sectors Most significant potential local sources of air pollution

Saguenay – Sainte-Thérèse sector (Arvida)

Industry (SO2*)

Saguenay – University sector (Chicoutimi) Residential wood heating (FP**), industry (FP)
Québec City – Vieux-Limoilou sector Industry (FP), transportation (FP)
Québec City – Champigny sector Residential wood heating (FP)
Trois-Rivières – Vieux-Trois-Rivières sector Industry, transportation
Shawinigan – L’Assomption sector Industry (SO2 and FP)
Shawinigan – Saint-Marc sector Industry (SO2 and FP)
Trois-Rivières – Sanctuary sector Industry (SO2)
Bécancour – City Hall sector Industry (SO2)
Sherbrooke – Eastern sector Residential wood heating (FP), transport (FP)
Gatineau – Hull sector No preponderant source
Rouyn-Noranda – Downtown sector Industry (SO2)
Rouyn-Noranda – Montée du Sourire sector Residential wood heating (FP), Industry (SO2)
Témiscaming Industry (SO2 and FP)
Sorel-Tracy – Saint-Joseph-de-Sorel (sector) Industry (SO2)
Sorel-Tracy – Downtown sector Industry (SO2)
Longueuil – Parc Océanie sector (Brossard) No preponderant source

 * SO2: sulphur dioxide
** FP: fine particles

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