St. Catharines, Ontario

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St. Catharines, Ontario Weather
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Today

 Hourly Daily Radar MinuteCast Monthly Air Quality Health & Activities

Current Weather

12:01 PM

59°F
RealFeel® 65°
RealFeel Shade™ 58°
Air Quality Excellent
Wind E 5 mph
Wind Gusts 8 mph
Mostly cloudy More Details

Current Air Quality

Today

10/1

9
AQI

Excellent

The air quality is ideal for most individuals; enjoy your normal outdoor activities.

Based on Current Pollutants

More Details

Learn more at Plumb Labs Logo

Current Air Quality

Our current air quality index (AQI) provides information on the quality of air that you are breathing and its impact on your health. There are at least six different pollutants that we track that impact the cleanliness of air and your health.

Health & Activities
See all
Dust & Dander
Low
The risk of dust and dander allergy symptoms is low.
Arthritis
Low
The risk of experiencing weather-related arthritis pain is low.
Sinus Pressure
Moderate
The risk of weather-related sinus pressure is moderate. Make sure you stay hydrated.
Common Cold
Low
The risk of catching a cold is low.
Flu
Low
The risk of catching the flu is low.
Migraine
Low
The risk of suffering from a weather-related migraine is low.
Asthma
Low
The risk of asthma symptoms is low.
Fishing
Great
Fishing conditions are great. Find an area with less boat or human activity to avoid areas where fish are hiding.
Running
Ideal
Conditions for running are ideal.
Golf
Great
Conditions for golfing are great. Stay hydrated when spending time in the sun.
Biking & Cycling
Ideal
Conditions for cycling are ideal.
Beach & Pool
Good
Conditions for a day at the beach or pool are good. Be sure to wear sunscreen and UV-protective clothing when spending time outdoors.
Stargazing
Fair
Conditions for stargazing are fair. On cloudy nights, you may still be able to see the moon and some brighter stars, depending on the season.
Hiking
Ideal
Conditions for hiking are ideal. Plan your route with enough time to finish before sundown.
Lawn Mowing
Ideal
Conditions for lawn mowing are ideal. Try to water your grass at least one inch every week to keep it strong in case of a drought.
Composting
Poor
Composting conditions are poor. Keep your compost area covered.
Outdoor Entertaining
Good
Conditions for outdoor entertaining will be good. Make sure you have shade available, so guests do not overheat.
Air Travel
Ideal
Conditions for flying are ideal. Have a safe trip.
Driving
Ideal
Conditions for driving are ideal.
Mosquitos
Low
The risk for mosquito activity are low.
Indoor Pests
High
The risk for pest activity is high. Replacing outdoor lights with yellow bug lights can attract less insects near your home.
Outdoor Pests
Extremely High
The risk for pest activity is extremely high. Eliminate standing water in rain gutters, buckets, and in tires where pests can breed.
See all

TODAY’S WEATHER FORECAST

10/1
65°Hi
RealFeel® 66°
Clouds and sunshine

TONIGHT’S WEATHER FORECAST

10/1
48°Lo
RealFeel® 39°
Winds gradually subsiding

TOMORROW’S WEATHER FORECAST

10/2
57°/ 40°
RealFeel® 54°
Winds subsiding and cooler

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Weather Near St. Catharines:

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