Sarnia
City in Ontario, Canada
Overview
Sarnia is a lakeside city in southwestern Ontario, best known for its beautiful waterfront along the St. Clair River and access to Lake Huron. The city blends historic charm with plenty of outdoor activities, making it a relaxing destination for both locals and visitors.
Geographic Context
Jurisdiction
Canada
Province
Ontario
Population
72,320
Time Zone
America/Toronto
Coordinates
42.98°, -82.40°
Key Metrics
Safety Score · estimate
80
Female Safety
82
LGBTQ+ Safety
75
Traffic Safety
77
Food Safety
95
Monthly Cost · estimate
$2,339
Local Cost
$1,580
Local Income
$2,800
Cashless
87
English
98
Temperature
8.6°C
Summer Avg
20.4°C
Winter Avg
-3.5°C
Record High
34.5°C
Record Low
-30.0°C
Humidity
79%
Precipitation
826 mm
Internet Speed
196 Mbps
Upload
102 Mbps
Latency
16 ms
City Vibrancy
80
Coworking
0
Cafes
10
Nightlife
8
Parks
62
Transport
0
Walk Score
0
Footways
—
Airport
YZR
Distance
8 km
Explore
Data sources
Source-backed data
World Air Quality Index - Latest available city-level air quality station measurement. Record updated 2025-12-05.
OpenStreetMap - Nearby amenities counted from OpenStreetMap-derived city extracts. Record updated 2025-12-06.
OpenStreetMap transport extract - Walkability, footway density, and airport access metrics derived from mapped transport features. Record updated 2025-12-05.
Estimates and unverified origins
Oyster List climate data - Climate origins are unverified. Available methods include historical APIs and AI estimates; stored rows do not identify the original dataset, reference period, or model for each value. Treat these summaries as estimates until independently verified. Record updated 2026-03-22.
Oyster List city price estimates - Price origins are unverified. Available generation methods include AI estimates; stored records do not identify a survey, observation period, or model for each price. Record updated 2026-01-14.
Oyster List AI-assisted estimates - Safety, lifestyle, income, and practical scores include model-assisted estimates. Stored records do not identify supporting observations for each score. Model-reported confidence: 86/100; this is not a measured accuracy score. Model: derived+gpt-4.1. Record updated 2026-03-26.