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Pollution can have grave consequences for your health. But moving to the country is not a solution; mining or pulp and paper towns may actually have worse air quality than the biggest, smoggiest cities. Canada's worst city for pollution; Thetford Mines, Que.

Affordable housing: 14
Household income: 178
Access to health care: 78
Overall crime: 18
Violent crime: 46
Total precipitation: 160
Pollution: 179
Culture: 152
(Rank is out of 179)
Source: MoneySense