St. Catharines, ON Weather

01:00 Saturday Artboard
Scattered clouds Scattered clouds 11° Feels like 11° Last Quarter Last Quarter Illuminated: 87%
reloj Hourly Overcast skies for the next few hours
  • Today 27 April Light rain 90% 4.3 mm 19° / 10° Calm 29 - 51 km/h
  • Tomorrow 28 April Light rain 70% 2 mm 23° / 14° Calm 30 - 54 km/h
  • Monday 29 April Light rain 60% 3.6 mm 17° / 9° Calm 18 - 33 km/h
  • Tuesday 30 April Moderate rain 80% 13 mm 22° / 9° Calm 17 - 38 km/h
  • Wednesday 1 May Scattered clouds 21° / 8° Calm 10 - 23 km/h
  • Thursday 2 May Thunderstorm 40% 6.1 mm 26° / 12° Calm 17 - 36 km/h
  • Friday 3 May Thunderstorm 50% 12 mm 23° / 14° Calm 24 - 48 km/h

Weather Forecast for St. Catharines, ON Today

, 27 April

Tomorrow

, 28 April
01:00 Scattered clouds 11° Scattered clouds
Feels Like 11°
Calm Southeast 17 - 29 km/h
UV Index 0 Low SPF: no
  • Rain Rain 0% 0 mm
  • Humidity Humidity 62%
  • Dew Point Dew Point 4 °C
  • Clouds Clouds 50%
  • Feels Like Feels Like 11 °C
  • Visibility Visibility 40 km
  • Wind Wind - Average 17 km/h
  • Pressure Pressure 1025 hPa
  • Fog Fog No
  • Wind - Gusts Wind - Gusts 29 km/h
  • Snowline Snowline 3200 m
02:00 Scattered clouds 11° Scattered clouds
Feels Like 11°
Calm South 18 - 30 km/h
UV Index 0 Low SPF: no
  • Rain Rain 0% 0 mm
  • Humidity Humidity 60%
  • Dew Point Dew Point 3 °C
  • Clouds Clouds 50%
  • Feels Like Feels Like 11 °C
  • Visibility Visibility 40 km
  • Wind Wind - Average 18 km/h
  • Pressure Pressure 1025 hPa
  • Fog Fog No
  • Wind - Gusts Wind - Gusts 30 km/h
  • Snowline Snowline 3000 m
03:00 Scattered clouds 11° Scattered clouds
Feels Like 11°
Calm South 18 - 31 km/h
UV Index 0 Low SPF: no
  • Rain Rain 0% 0 mm
  • Humidity Humidity 57%
  • Dew Point Dew Point 3 °C
  • Clouds Clouds 53%
  • Feels Like Feels Like 11 °C
  • Visibility Visibility 40 km
  • Wind Wind - Average 18 km/h
  • Pressure Pressure 1024 hPa
  • Fog Fog No
  • Wind - Gusts Wind - Gusts 31 km/h
  • Snowline Snowline 3000 m
04:00 Partly cloudy 11° Partly cloudy
Feels Like 11°
Calm South 18 - 32 km/h
UV Index 0 Low SPF: no
  • Rain Rain 0% 0 mm
  • Humidity Humidity 55%
  • Dew Point Dew Point 2 °C
  • Clouds Clouds 55%
  • Feels Like Feels Like 11 °C
  • Visibility Visibility 40 km
  • Wind Wind - Average 18 km/h
  • Pressure Pressure 1024 hPa
  • Fog Fog No
  • Wind - Gusts Wind - Gusts 32 km/h
  • Snowline Snowline 3000 m
Partly cloudy 05:00 Partly cloudy 11° Partly cloudy
Feels Like 11°
Calm South 20 - 34 km/h
UV Index 0 Low SPF: no
Partly cloudy 05:00 Partly cloudy 11° Overcast
Feels Like 11°
Calm South 20 - 34 km/h
UV Index 0 Low SPF: no
  • Rain Rain 0% 0 mm
  • Humidity Humidity 54%
  • Dew Point Dew Point 2 °C
  • Clouds Clouds 93%
  • Feels Like Feels Like 11 °C
  • Visibility Visibility 40 km
  • Wind Wind - Average 20 km/h
  • Pressure Pressure 1024 hPa
  • Fog Fog No
  • Wind - Gusts Wind - Gusts 34 km/h
  • Snowline Snowline 3200 m
06:00 Overcast 11° Overcast
Feels Like 11°
Calm South 20 - 36 km/h
UV Index 0 Low SPF: no
  • Rain Rain 0% 0 mm
  • Humidity Humidity 54%
  • Dew Point Dew Point 2 °C
  • Clouds Clouds 100%
  • Feels Like Feels Like 11 °C
  • Visibility Visibility 40 km
  • Wind Wind - Average 20 km/h
  • Pressure Pressure 1023 hPa
  • Fog Fog No
  • Wind - Gusts Wind - Gusts 36 km/h
  • Snowline Snowline 3200 m
07:00 Overcast 11° Overcast
Feels Like 11°
Calm South 20 - 35 km/h
UV Index 0 Low SPF: no
  • Rain Rain 10% 0 mm
  • Humidity Humidity 55%
  • Dew Point Dew Point 3 °C
  • Clouds Clouds 100%
  • Feels Like Feels Like 11 °C
  • Visibility Visibility 30 km
  • Wind Wind - Average 20 km/h
  • Pressure Pressure 1023 hPa
  • Fog Fog No
  • Wind - Gusts Wind - Gusts 35 km/h
  • Snowline Snowline 3100 m
Light rain 08:00 Light rain 30% 0.2 mm 11° Light rain
Feels Like 11°
Calm South 19 - 36 km/h
UV Index 0 Low SPF: no
Light rain 08:00 Light rain 30% 0.2 mm 11° Light rain
Feels Like 11°
Calm South 19 - 36 km/h
UV Index 0 Low SPF: no
  • Rain Rain 30% 0.2 mm
  • Humidity Humidity 62%
  • Dew Point Dew Point 4 °C
  • Clouds Clouds 100%
  • Feels Like Feels Like 11 °C
  • Visibility Visibility 16 km
  • Wind Wind - Average 19 km/h
  • Pressure Pressure 1023 hPa
  • Fog Fog No
  • Wind - Gusts Wind - Gusts 36 km/h
  • Snowline Snowline 3100 m
09:00 Overcast 12° Overcast
Feels Like 12°
Calm South 22 - 37 km/h
UV Index 1 Low SPF: no
  • Rain Rain 20% 0 mm
  • Humidity Humidity 59%
  • Dew Point Dew Point 4 °C
  • Clouds Clouds 100%
  • Feels Like Feels Like 12 °C
  • Visibility Visibility 12 km
  • Wind Wind - Average 22 km/h
  • Pressure Pressure 1023 hPa
  • Fog Fog No
  • Wind - Gusts Wind - Gusts 37 km/h
  • Snowline Snowline 3200 m
10:00 Light rain 50% 0.3 mm 12° Light rain
Feels Like 12°
Calm South 21 - 39 km/h
UV Index 2 Low SPF: no
  • Rain Rain 50% 0.3 mm
  • Humidity Humidity 69%
  • Dew Point Dew Point 6 °C
  • Clouds Clouds 92%
  • Feels Like Feels Like 12 °C
  • Visibility Visibility 9 km
  • Wind Wind - Average 21 km/h
  • Pressure Pressure 1023 hPa
  • Fog Fog No
  • Wind - Gusts Wind - Gusts 39 km/h
  • Snowline Snowline 3300 m
Light rain 11:00 Light rain 70% 1 mm 13° Light rain
Feels Like 13°
Calm South 21 - 40 km/h
UV Index 3 Moderate SPF: 6-10
Light rain 11:00 Light rain 80% 3.2 mm 13° Light rain
Feels Like 13°
Calm South 21 - 40 km/h
UV Index 3 Moderate SPF: 6-10
  • Rain Rain 70% 1 mm
  • Humidity Humidity 74%
  • Dew Point Dew Point 8 °C
  • Clouds Clouds 100%
  • Feels Like Feels Like 13 °C
  • Visibility Visibility 9 km
  • Wind Wind - Average 21 km/h
  • Pressure Pressure 1023 hPa
  • Fog Fog No
  • Wind - Gusts Wind - Gusts 40 km/h
  • Snowline Snowline 3400 m
12:00 Light rain 80% 1.9 mm 12° Light rain
Feels Like 12°
Calm South 25 - 44 km/h
UV Index 4 Moderate SPF: 6-10
  • Rain Rain 80% 1.9 mm
  • Humidity Humidity 81%
  • Dew Point Dew Point 9 °C
  • Clouds Clouds 97%
  • Feels Like Feels Like 12 °C
  • Visibility Visibility 16 km
  • Wind Wind - Average 25 km/h
  • Pressure Pressure 1022 hPa
  • Fog Fog No
  • Wind - Gusts Wind - Gusts 44 km/h
  • Snowline Snowline 3400 m
13:00 Light rain 70% 0.3 mm 14° Light rain
Feels Like 14°
Calm South 25 - 47 km/h
UV Index 5 Moderate SPF: 6-10
  • Rain Rain 70% 0.3 mm
  • Humidity Humidity 77%
  • Dew Point Dew Point 10 °C
  • Clouds Clouds 95%
  • Feels Like Feels Like 14 °C
  • Visibility Visibility 8 km
  • Wind Wind - Average 25 km/h
  • Pressure Pressure 1021 hPa
  • Fog Fog No
  • Wind - Gusts Wind - Gusts 47 km/h
  • Snowline Snowline 3400 m
Light rain 14:00 Light rain 70% 0.3 mm 15° Light rain
Feels Like 15°
Calm South 25 - 49 km/h
UV Index 4 Moderate SPF: 6-10
Light rain 14:00 Light rain 70% 0.7 mm 15° Light rain
Feels Like 15°
Calm South 25 - 49 km/h
UV Index 4 Moderate SPF: 6-10
  • Rain Rain 70% 0.3 mm
  • Humidity Humidity 74%
  • Dew Point Dew Point 11 °C
  • Clouds Clouds 99%
  • Feels Like Feels Like 15 °C
  • Visibility Visibility 18 km
  • Wind Wind - Average 25 km/h
  • Pressure Pressure 1020 hPa
  • Fog Fog No
  • Wind - Gusts Wind - Gusts 49 km/h
  • Snowline Snowline 3400 m
15:00 Light rain 50% 0.1 mm 16° Light rain
Feels Like 16°
Calm South 26 - 47 km/h
UV Index 4 Moderate SPF: 6-10
  • Rain Rain 50% 0.1 mm
  • Humidity Humidity 74%
  • Dew Point Dew Point 11 °C
  • Clouds Clouds 94%
  • Feels Like Feels Like 16 °C
  • Visibility Visibility 18 km
  • Wind Wind - Average 26 km/h
  • Pressure Pressure 1019 hPa
  • Fog Fog No
  • Wind - Gusts Wind - Gusts 47 km/h
  • Snowline Snowline 3400 m
16:00 Light rain 30% 0.2 mm 17° Light rain
Feels Like 17°
Calm South 25 - 47 km/h
UV Index 4 Moderate SPF: 6-10
  • Rain Rain 30% 0.2 mm
  • Humidity Humidity 71%
  • Dew Point Dew Point 12 °C
  • Clouds Clouds 54%
  • Feels Like Feels Like 17 °C
  • Visibility Visibility 35 km
  • Wind Wind - Average 25 km/h
  • Pressure Pressure 1018 hPa
  • Fog Fog No
  • Wind - Gusts Wind - Gusts 47 km/h
  • Snowline Snowline 3600 m
Scattered clouds 17:00 Scattered clouds 18° Scattered clouds
Feels Like 18°
Calm South 24 - 48 km/h
UV Index 2 Low SPF: no
Scattered clouds 17:00 Scattered clouds 30% 0.2 mm 18° Light rain
Feels Like 18°
Calm South 24 - 48 km/h
UV Index 2 Low SPF: no
  • Rain Rain 20% 0 mm
  • Humidity Humidity 69%
  • Dew Point Dew Point 12 °C
  • Clouds Clouds 43%
  • Feels Like Feels Like 18 °C
  • Visibility Visibility 35 km
  • Wind Wind - Average 24 km/h
  • Pressure Pressure 1017 hPa
  • Fog Fog No
  • Wind - Gusts Wind - Gusts 48 km/h
  • Snowline Snowline 3500 m
18:00 Scattered clouds 19° Scattered clouds
Feels Like 19°
Calm South 24 - 44 km/h
UV Index 1 Low SPF: no
  • Rain Rain 10% 0 mm
  • Humidity Humidity 66%
  • Dew Point Dew Point 12 °C
  • Clouds Clouds 52%
  • Feels Like Feels Like 19 °C
  • Visibility Visibility 35 km
  • Wind Wind - Average 24 km/h
  • Pressure Pressure 1017 hPa
  • Fog Fog No
  • Wind - Gusts Wind - Gusts 44 km/h
  • Snowline Snowline 3600 m
19:00 Scattered clouds 18° Scattered clouds
Feels Like 18°
Calm South 27 - 47 km/h
UV Index 0 Low SPF: no
  • Rain Rain 0% 0 mm
  • Humidity Humidity 68%
  • Dew Point Dew Point 12 °C
  • Clouds Clouds 25%
  • Feels Like Feels Like 18 °C
  • Visibility Visibility 35 km
  • Wind Wind - Average 27 km/h
  • Pressure Pressure 1017 hPa
  • Fog Fog No
  • Wind - Gusts Wind - Gusts 47 km/h
  • Snowline Snowline 3700 m
Partly cloudy 20:00 Partly cloudy 17° Partly cloudy
Feels Like 17°
Calm South 26 - 48 km/h
UV Index 0 Low SPF: no
Partly cloudy 20:00 Partly cloudy 17° Partly cloudy
Feels Like 17°
Calm South 26 - 48 km/h
UV Index 0 Low SPF: no
  • Rain Rain 0% 0 mm
  • Humidity Humidity 71%
  • Dew Point Dew Point 12 °C
  • Clouds Clouds 79%
  • Feels Like Feels Like 17 °C
  • Visibility Visibility 35 km
  • Wind Wind - Average 26 km/h
  • Pressure Pressure 1017 hPa
  • Fog Fog No
  • Wind - Gusts Wind - Gusts 48 km/h
  • Snowline Snowline 3600 m
21:00 Scattered clouds 17° Scattered clouds
Feels Like 17°
Calm South 27 - 46 km/h
UV Index 0 Low SPF: no
  • Rain Rain 0% 0 mm
  • Humidity Humidity 71%
  • Dew Point Dew Point 12 °C
  • Clouds Clouds 44%
  • Feels Like Feels Like 17 °C
  • Visibility Visibility 35 km
  • Wind Wind - Average 27 km/h
  • Pressure Pressure 1017 hPa
  • Fog Fog No
  • Wind - Gusts Wind - Gusts 46 km/h
  • Snowline Snowline 3500 m
22:00 Scattered clouds 17° Scattered clouds
Feels Like 17°
Calm South 29 - 49 km/h
UV Index 0 Low SPF: no
  • Rain Rain 0% 0 mm
  • Humidity Humidity 72%
  • Dew Point Dew Point 12 °C
  • Clouds Clouds 24%
  • Feels Like Feels Like 17 °C
  • Visibility Visibility 35 km
  • Wind Wind - Average 29 km/h
  • Pressure Pressure 1016 hPa
  • Fog Fog No
  • Wind - Gusts Wind - Gusts 49 km/h
  • Snowline Snowline 3600 m
Scattered clouds 23:00 Scattered clouds 17° Scattered clouds
Feels Like 17°
Calm Southwest 29 - 51 km/h
UV Index 0 Low SPF: no
Scattered clouds 23:00 Scattered clouds 17° Scattered clouds
Feels Like 17°
Calm Southwest 29 - 51 km/h
UV Index 0 Low SPF: no
  • Rain Rain 0% 0 mm
  • Humidity Humidity 72%
  • Dew Point Dew Point 12 °C
  • Clouds Clouds 14%
  • Feels Like Feels Like 17 °C
  • Visibility Visibility 35 km
  • Wind Wind - Average 29 km/h
  • Pressure Pressure 1016 hPa
  • Fog Fog No
  • Wind - Gusts Wind - Gusts 51 km/h
  • Snowline Snowline 3700 m
24:00 Clear sky 16° Clear sky
Feels Like 16°
Calm Southwest 28 - 49 km/h
UV Index 0 Low SPF: no
  • Rain Rain 0% 0 mm
  • Humidity Humidity 75%
  • Dew Point Dew Point 12 °C
  • Clouds Clouds 5%
  • Feels Like Feels Like 16 °C
  • Visibility Visibility 30 km
  • Wind Wind - Average 28 km/h
  • Pressure Pressure 1017 hPa
  • Fog Fog No
  • Wind - Gusts Wind - Gusts 49 km/h
  • Snowline Snowline 3700 m

Pollution in St. Catharines

Detail
36
Fair O₃ (89 µg/m³)
  • Little health risk.
  • Sensitive people should consider reducing prolonged or intense outdoor activities if they experience symptoms.

Weather graphs
Maximum Minimum Rainfall

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