Last updated: 2026-07-09. Wildfire and air-quality conditions change fast, so always check official advisories for real-time information before you head out.
In early July, the British Columbia sky turned that familiar shade of orange again. The Brunswick and Ainslie Creek wildfires in the Fraser Canyon kept burning, pushing smoke deep into the Interior; from the evening of July 7 the air quality in Kamloops was rated “very high risk,” and the streets were bathed in a hazy amber. For anyone planning a summer trip to Canada — or newcomers who have just arrived — wildfire smoke is almost an annual summer lesson: it doesn’t have to reach your own city, but smoke travels far and can upend plans hundreds of kilometres away.
This article isn’t about the fires themselves, but about making sense of “the smoke is here — how do I judge it and protect myself.” What you really need to watch each day are two things: the fire map, and the air quality health index.
First, the fires. British Columbia’s official authority is the BC Wildfire Service’s live wildfire map, which marks the location, size and containment status of every fire; evacuation alerts and orders are issued by each Regional District based on this information. Its purpose isn’t to make you panic, but to answer a very practical question: is the national park, highway or town I’m heading to currently inside an evacuation area, with roads closed? Earlier this year, when CBC reported the fires near Boston Bar growing and additional evacuations, it was this system being updated step by step.
But when the fire is far away and you’re in the city, what affects you most directly is the air. Here you need to get to know Canada’s own indicator — the Air Quality Health Index, or AQHI.
How to read the AQHI — what the numbers mean
The AQHI is set jointly by Environment and Climate Change Canada and provincial health authorities. You can check the real-time value for your city on the air quality page at weather.gc.ca or in the WeatherCAN app. Its scale runs from 1 to 10, with anything above 10 shown as “10+,” and it maps to four risk levels: 1–3 is low risk, 4–6 moderate, 7–10 high, and 10+ very high risk. When Kamloops was rated “very high risk” that day, this is the level being referred to.
Unlike the AQI scale (0–500) many countries know, the AQHI doesn’t hand you one alarming big number; instead it converts pollutant concentrations into a “relative health risk” and gives direct advice: once it reaches 7 or above, the general public should consider reducing or modifying strenuous outdoor activity, while sensitive groups — people with heart or lung conditions, seniors, pregnant people and young children — should take care at even lower values. It updates hourly and includes a forecast, making it easy to plan the next day.
During wildfire season, the fine particulate matter (PM2.5) in smoke is the main driver pushing the AQHI up. These particles are fine enough to reach deep into the lungs, and even brief exposure can cause a scratchy throat, stinging eyes, headache or chest tightness. So the point of checking the AQHI isn’t to chase “what score is safe,” but to build a habit: glance at the number and the trend before you go out, and when it’s high, move outdoor plans indoors.
When the smoke arrives — a few things you can actually do
On days when the smoke really is thick, what to do is not complicated. Indoors, keep windows closed as much as possible and run the air conditioning on recirculate; an air purifier with a HEPA filter makes a real difference. If you must be outdoors for a long time, a well-sealed N95 or KN95 mask is what actually blocks PM2.5 — ordinary cloth or surgical masks offer limited protection. Cut back on running, hiking and other activities that make you breathe hard, drink plenty of water, and sensitive groups should keep medication handy. Canadian health authorities (such as the BCCDC) also remind us not to tough it out when symptoms persist or worsen — see a doctor when you should. All these details can be found on the BC Centre for Disease Control’s wildfire smoke page.
It’s worth noting that the cost of wildfires has long gone beyond “you can’t go out and play.” A recent Statistics Canada report points out that extreme weather — from wildfires and floods to heat waves — is genuinely pushing up Canadians’ cost of living, dragging in insurance, repairs, agriculture and logistics; this is the angle explored in a CBC feature. For travellers, the most direct experience is having plans forced to change; for those living in Canada long-term, paying more attention to the air in summer and treating preparedness as routine will only grow more important.
If you’re already planning to head into the Rockies or the national parks this summer, before you set off — beyond checking the weather forecast — spending thirty extra seconds on the fire map and the AQHI can often help you avoid the worst days. Jasper’s trails gradually reopening after the big fire is a reminder that Canada’s outdoors are beautiful, but they, and fire, and smoke, have always been part of the same mountains and forests. To plan a route, start with our Canada attractions overview; for the practicalities of settling in, our Canada life guide is the place to begin.