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Thunder Bay's current temperature and UV Index:
 
Don’t let a sunburn ruin your vacation! 
Sunburns can happen in minutes during a trip to sunny destinations where the UV index is Extreme (11+). More information can be found by reading below.

Unlike Canada, many tropical…

Thunder Bay's current temperature and UV Index:
 
 
Winter Sun Savvy Facts

Reducing ultraviolet radiation (UV) exposure decreases the risk of skin cancer and eye
damage.
Up to 80% of sun’s UV rays reflect off snow and ice.
UV reflected off snow in winter is stronger than UV reflected…

UV Index
To find the current UV index for the Thunder Bay District, please visit Environment Canada's page: Thunder Bay's Current Weather Conditions


UV Index


UV Index
Description




Low (1-2)


Sunglasses (bright days)
Cover-up (> 1 hour)

Sunscreen SPF 30+ (> 1 hour)






Medium (3-5…

Like public beaches, pools and other artificial recreational waters are great places to have fun and cool off in the summer. However, they can also be a breeding ground for recreational waterborne illnesses (RWIs), including a wide variety of infections such as gastrointestinal, skin, ear,…

Water – it’s not just for drinking! Kids and adults alike love to splash around in it, water ski on it, and dive down into it, especially on a hot day. But water is also an excellent place for germs to live. Whether it is outdoors at our local beaches and lakes or indoors in our pools and spas, we…

We all love sunny days, but the sun can be damaging to our health without the proper precautions. Holes in the Earth’s natural defence against ultraviolet (UV) rays – the ozone layer – have left us at an even higher risk for skin cancer.

The role of the Thunder Bay District Health Unit is to raise…

The tools used in body art services (including tattoos, body piercing and micro-pigmentation – also known as “permanent makeup”) and salon services (including manicures and pedicures) often come into contact with blood and other bodily fluids. This increases the risk for transmitting serious…

Extreme heat events due to a changing climate are a growing public health risk in Canada. Because of our cooler climate in the Thunder Bay District, we can be more susceptible to extreme heat than those who are regularly exposed to it.

Heat Illnesses

Extreme heat puts everyone at risk of heat…




Year
Location
Water Sample Date
Date BGA Identified




2024
Marie Louise Lake
September 21, 2024
October 8, 2024


 
McKenzie Beach Avenue (Shuniah)
August 27, 202
August 29, 2024


 
Two Island Lake
August 22, 2024…

Blue-green algae (BGA) are microscopic organisms found naturally in lakes and streams. They are usually found in low numbers but can rapidly increase in warm, shallow, surface water that receives a lot of sun. When this happens, they can form blooms that make the water look like green pea soup or…

The Street Outreach team provides free, confidential, non-emergency public health support to anyone who is street-involved, including people who are homeless, under-housed, and/or using substances in the City of Thunder Bay.

The Street Outreach Program is like a mobile Health Unit. Staffed by…

What Shapes People's Health?
It is important to have good health. We often hear about ways to improve our health and how good health will help us live a longer, better, and more enjoyable life. So how exactly do we achieve good health?
Good health is affected by the lifestyle choices we make,…

Canadians head to the polls on Monday, April 28, 2025. Thunder Bay District Health Unit (TBDHU) encourages community members across the Thunder Bay District to get informed, vote, and consider public health when they vote.

Vote
Any Canadian citizen, 18 or older can vote. Voting is a right and…

About the Conference
The annual Harm Reduction Conference is presented by the Thunder Bay District Health Unit with the support of the Thunder Bay Drug Strategy. The goals of the conference are to:

Provide a forum for the safe and open exchange of ideas
Share strategies and technical information…

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Date
Contents




July 29, 2025


Adverse Event Following Immunization (AEFI) – Updates to reporting form and fact sheet
World Hepatitis Day 2025
Save the Date: Harm Reduction Conference 2025
WEBINAR RECORDING: Understanding brain…