Sarnia Weather Today — Ontario, Canada
Current temperature, rain chance, humidity, wind and air quality in Sarnia, plus an hourly and 3-day forecast. Updated through the day.
05:17
Sat, 19 Sep 2026
📍 Ontario, Canada
Sarnia??
14
°C
Cloudy
Feels 10°C · 58°F
💧 42% Humidity
💨 → 13 km/h E
👁 10 km Visibility
🌧 0 mm Precip
☁ 87% Cloud
☀️ UV Low
🌿 AQI Good
☀️ UV Index
0
Low
🔵 Pressure
1022
hPa · 30.17 in
💨 Wind
13
km/h · Gust 18.7 km/h
→ E
💧 Humidity
42%
Dew point 1.7°C
👁 Visibility
10
km · 6 miles
🌡 Heat Index
14.3°
Wind chill 13.4°C
🌿 Air Quality
Good
US EPA Index: 1
🌅
Sunrise
07:13 AM
🌇
Sunset
07:33 PM
📅 3-Day Forecast
Saturday
19 Sep 2026
Overcast
21°
/
14°
💧54%
🌧0.09mm
💨19
☀️UV 5.5
Sunday
20 Sep 2026
Overcast
18°
/
13°
💧74%
🌧5.53mm
💨28
☀️UV 1.5
Monday
21 Sep 2026
Overcast
18°
/
12°
💧59%
🌧0mm
💨29
☀️UV 3.2
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