Guelph, Ontario

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Guelph, Ontario Weather
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Today

 Hourly Daily Radar MinuteCast Monthly Air Quality Health & Activities

Current Weather

9:39 AM

74°F
RealFeel® 80°
RealFeel Shade™ 73°
Air Quality Fair
Wind SW 6 mph
Wind Gusts 13 mph
Sunny More Details

Current Air Quality

Today

5/21

22
AQI

Fair

The air quality is generally acceptable for most individuals. However, sensitive groups may experience minor to moderate symptoms from long-term exposure.

Based on Current Pollutants

More Details

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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
Moderate
The risk of experiencing weather-related arthritis pain is moderate. Stay hydrated and stretch to help avoid arthritis symptoms.
Sinus Pressure
Moderate
The risk of weather-related sinus pressure is moderate. Make sure you stay hydrated.
Common Cold
Moderate
The risk of catching a cold is moderate.
Flu
Moderate
The risk of catching the flu is moderate.
Migraine
Low
The risk of suffering from a weather-related migraine is low.
Asthma
High
The risk of asthma symptoms is high. Be sure to use HEPA filters in your home to cut down on indoor asthma triggers.
Fishing
Ideal
Fishing conditions are ideal. Wear sunscreen and a hat if you'll be in the sun.
Running
Great
Conditions for running are great. Be sure to warm up and cool down adequately.
Golf
Great
Conditions for golfing are great. Stay hydrated when spending time in the sun.
Biking & Cycling
Great
Conditions for cycling are great. Be sure you have the correct gear to keep your core temperature warm during winter months and cool during hot weather.
Beach & Pool
Poor
Conditions for a day at the beach or pool are poor. Stay out of the water if there is a chance of lightning. Only swim in water temperatures below 55 degrees if you have the proper gear.
Stargazing
Poor
Conditions for stargazing are poor.
Hiking
Great
Conditions for hiking are great. Wear sunscreen and UV-protective clothing.
Lawn Mowing
Great
Conditions for lawn mowing are great. Ensure you are servicing your mower frequently to keep the blades sharp.
Composting
Great
Composting conditions are great. Ensure any food scraps are covered with dry leaves or wood chips to help avoid attracting pests.
Outdoor Entertaining
Great
Conditions for outdoor entertaining will be great. Pay attention to the mosquito or pest forecast and prepare deterrents.
Air Travel
Ideal
Conditions for flying are ideal. Have a safe trip.
Driving
Good
Conditions for driving are good. Stay alert of any changes to the weather forecast.
Mosquitos
Low
The risk for mosquito activity are low.
Indoor Pests
Very High
The risk for pest activity is high. Consider an EPA-registered repellent to deter bites.
Outdoor Pests
Low
The risk for pest activity is low.
See all

TODAY’S WEATHER FORECAST

5/21
79°Hi
RealFeel® 80°
A shower and thunderstorm

Looking Ahead

Thunderstorms this afternoon

TONIGHT’S WEATHER FORECAST

5/21
58°Lo
RealFeel® 53°
Overcast, showers; mild

TOMORROW’S WEATHER FORECAST

5/22
62°/ 38°
RealFeel® 62°
Cooler; a shower in the a.m.

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