Delta, BC Live Wildfire Smoke Map
Get Alerts For Wildfires In Your Area
The moment a wildfire starts near you, you'll get an instant alert and simple tips to reduce your smoke exposure.
What's In The Smoke
30xSmaller than a human hair
Fine enough to reach deep into the lungs. A MERV 13 is built to capture it.
How Far It Travels
It Doesn't Stay Local
Smoke rides the wind far downwind — you can get smoky air with no fire nearby.
What To Do During A Smoke Event
Simple steps to reduce indoor exposure.
- Stay In, Close UpShut windows and doors to keep smoke out.
- Set Fan To "On"Keeps air cycling through your filter, not just when heating or cooling.
- Recirculate AirSwitch off fresh-air intake so you're not pulling smoke in.
- Run A MERV 13Built to capture the fine PM2.5 in smoke.
- Add A PurifierExtra filtration for the room you use most.
- Wear an N95 if OutsideFits snug to block fine particles — a cloth mask won't.
The Best Air Filter For Wildfire Smoke
During smoke events, the EPA recommends upgrading to a MERV 13 filter — or the highest-rated filter your system can handle — to help reduce the fine particles smoke brings indoors. MERV 13 is the level most home HVAC systems can run while still capturing PM2.5, the fine particulate that makes up the bulk of wildfire smoke.
- Captures PM2.5 particles
- Blocks ash, soot, and smoke odor
- Keeps your indoor air safe—even when the outdoor air is dangerous
- Meets the EPA's recommended rating for filtering fine wildfire smoke particles.
Wildfire Smoke FAQs
Facts About Wildfires
Over 70,000 wildfires burn in the U.S. every year.
Wildfire smoke can travel 1,000+ miles, affecting states that aren't even near the blaze.
Exposure to wildfire smoke can worsen asthma, trigger heart issues, and lead to ER visits.
Indoor air can hold more fine particles during wildfire events unless it's properly filtered.
The EPA advises using MERV 13 filters or portable HEPA air cleaners during wildfire smoke events.
Don't Wait Until The Smoke's Inside.
Use the live wildfire smoke tracker and upgrade your air filters today to protect your lungs and your home.
Shop Filters For Smoke Protection
Live Delta, BC Forest Wildfire & Smoke Map Today: Local Air Quality Tracking & Indoor Protection Solutions
TL;DR
For a live picture of Delta, check the BC Wildfire Service map for active fires and Metro Vancouver's AirMap for hourly Air Quality Health Index (AQHI) readings. Once the AQHI reaches 4, or a U.S. AQI reading tops 100, switch to a MERV 13 filter if you have an HVAC system and run a HEPA air purifier in each room. MERV 13 is the rating the U.S. EPA recommends for smoke.
Key Takeaways
Delta's two official air quality stations, North Delta and Tsawwassen, report hourly on AirMap.
Much of Delta's smoke comes from distant fires.
Check the filter often during smoke; it can stop working before it looks dirty.
Why Filterbuy Wrote This Page
Because Filterbuy makes air filters, we see smoke season from the factory side. Our order data shows orders spiking within hours of a major fire, just as shipping slows and common MERV 13 sizes run short.
Where Can I See the Live Wildfire and Smoke Map for Delta, BC Today?
Delta is a Metro Vancouver city between the Fraser River and Boundary Bay. The BC Wildfire Service tracks where fires are burning. Metro Vancouver measures the air you breathe in Delta, hour by hour, and issues Delta's air quality warnings.
Live maps for Delta: Active fires (BC Wildfire Service) · Hourly AQHI (AirMap) · Smoke forecast (FireSmoke Canada)
Official live map sources for Delta, BC
Sources: BC Wildfire Service, Metro Vancouver, Government of B.C., ECCC, FireSmoke Canada.
How Do I Read Delta's Smoke Map and AQHI Numbers?
Canada's Air Quality Health Index (AQHI) runs from 1 to 10+. Environment and Climate Change Canada sorts readings into four health-risk bands, and during wildfire smoke the index is calculated hourly from fine particles (PM2.5) alone. For the most local reading, use whichever station is closer: North Delta, or Tsawwassen, which also covers most of Ladner.
Filterbuy's action line is AQHI 4, or a U.S. AQI over 100 if your app shows that scale. At that point, switch to a MERV 13 filter if you have an HVAC system, set its fan to On, run a HEPA air purifier in each room (bedrooms first), and close up the house. MERV 13 is the filter rating the U.S. EPA recommends for wildfire smoke.
Filterbuy's Delta Smoke-Day Playbook:
AQHI risk bands: Environment and Climate Change Canada. Action line and indoor steps: Filterbuy recommendations, not medical advice.
Is There a Forest Fire in Delta, BC Right Now?
Big forest fires inside Delta are uncommon, since most of the city is farmland and wetland. The exception is Burns Bog, a peat bog of roughly 3,000 hectares (CTV News).
Peat can burn underground, which is why Burns Bog fires take so long to put out (Global News). Recorded fires (Fire Fighting in Canada):
Recorded Burns Bog fires in Delta, BC
Sources: Fire Fighting in Canada, Times Colonist (The Canadian Press), The Globe and Mail.
Why Does Delta Get Wildfire Smoke When the Fires Are Far Away?
When high pressure settles over the B.C. Interior and a trough forms along the coast, winds push smoke west and funnel it down the Fraser River valley into the Lower Mainland (The Weather Network).
On 22 July 2026, Metro Vancouver issued a yellow air quality warning that included Richmond, Delta, and Tsawwassen (Daily Hive).
When is smoke season in Delta? It usually peaks from late June to mid-September, but 2026 started early: the Coastal Fire Centre, which covers the Lower Mainland, brought in its earliest-ever campfire ban on 7 May (Ha-Shilth-Sa).
How Can I Protect the Air Inside My Delta Home From Wildfire Smoke?
Start with official guidance: check Metro Vancouver warnings and follow your local health authority. Filtration is one layer, not the whole answer. B.C. health authorities treat MERV 13 as the minimum filter rating for wildfire smoke (Island Health). Most furnaces handle MERV 13 without equipment problems when the filter is replaced often (U.S. EPA).
At AQHI 4 or higher, or a U.S. AQI over 100, Filterbuy recommends these steps, in this order:
Switch to MERV 13 if you have an HVAC system. It's the rating the U.S. EPA recommends for smoke, and the central system moves far more air than any portable unit. Filterbuy MERV 13 Optimal filters come in over 600 sizes.
Set the fan to On. Switch your furnace fan from "Auto" to "On" so it filters around the clock. If you have a heat recovery ventilator (HRV), check its manual for a recirculation setting.
Run a HEPA air purifier in each room. Start with bedrooms. With an HVAC system, run the purifiers alongside the MERV 13 filter, not instead of it.
Close up the house. Shut windows and doors, and skip candles, frying, smoking, and vacuuming without a sealed unit while smoke is in.
Inspect the filter often. The 90-day life printed on Filterbuy boxes is a dust rating, not a smoke rating. Replace it once it looks dirty, dark brown or black, even if that's well before the normal interval, and keep spares on hand.
The charge that catches smoke is put into the fibers at the factory, and once smoke has neutralized it, it doesn't come back. The filter still looks fine. It still moves air. It just isn't cleaning anything any more.
Which Filterbuy Filter Is Right For Smoke Season?
U.S. EPA: most furnaces take MERV 13 without equipment problems when the filter is replaced often. Confirm your size first.
Filterbuy makes more than 600 filter sizes at its plants in four U.S. states and ships free to Canada, no minimum order. With subscribe and save, you get 5% off and a fresh MERV 13 before each smoke season, and you can edit, skip, or cancel anytime.
What If I Rent Or Live In A Condo Without A Furnace?
Without an HVAC system, HEPA air purifiers are your primary defence, not a backup. Run one in each room, sized with our clean-room guide. Pick a CARB-certified unit, which produces little or no ozone (U.S. EPA), and skip ionizers and ozone generators. As a stopgap, not a replacement for a certified cleaner, you can build a do-it-yourself box fan cleaner with a 20x20x1 MERV 13 filter. EPA's safety conditions: use a box fan made in 2012 or later with a UL or ETL mark, and never leave an older fan running while you're away or asleep. Tip: Filterbuy's 20x20x1 measures 19.5 x 19.5 inches, so tape it to the fan housing.
Plan Ahead: A Delta Smoke-Season Checklist
Prepare now, while filters are easy to find, and be ready by early May. If smoke got into your home this summer, start with Filterbuy's smoke recovery checklist.
Stock spares. Keep two or three Filterbuy MERV 13 filters in the size printed on your current filter's frame. Smoke loads filters much faster than household dust.
Size each room's air cleaner. U.S. EPA's rule is a smoke CADR of at least two-thirds of the room's floor area in square feet (U.S. EPA). A 3.7 x 4.3 m (12 x 14 ft) bedroom is roughly 168 sq ft, so look for a smoke CADR of at least 112.
Turn on alerts. Sign up for Metro Vancouver air quality warnings for smoke and Delta's Alertable system for evacuations.
Supporting Statistics
Wildfire smoke is linked to up to 2,500 premature deaths a year
Health Canada estimate, 2013–2018.
Source: Health Canada
B.C. burned a record 2.84 million hectares in 2023
More than 15 times the 105-year average.
Most burned in the northeast, far from Delta.
Source: B.C. Ministry of Forests
Air cleaners cut indoor smoke particles by 57% on average
Results across 10 wildfire studies ranged from 5% to 99%.
Nine of the studies used MERV 13 filters.
Certainty is rated low because study methods varied.
Source: NCCEH
Frequently Asked Questions
Is The Air Quality In Delta, BC Safe Today?
Check Metro Vancouver's AirMap, which shows hourly AQHI readings for North Delta and Tsawwassen. A reading of 1–3 is low risk, while 7 or higher is high risk.
What Merv Rating Do I Need For Wildfire Smoke?
MERV 13. It's the filter rating the U.S. EPA recommends for wildfire smoke, and the tier Filterbuy recommends. A pleated filter captures particles, not gases, so it won't remove smoke odour; for odours, see Filterbuy's Odour Eliminator line.
How Often Should I Change My Furnace Filter During Smoke Season?
Inspect it during every smoke event and replace it once it looks dirty, dark brown or black. That can be well before the normal interval, so keep spares on hand.
Glossary
AQI (Air Quality Index): The U.S. 0–500 air quality scale some weather apps show.
AQHI (Air Quality Health Index): Canada's 1-to-10+ scale linking local air pollution to health risk.
HEPA: High-efficiency particulate air, the standard for portable air cleaners. It does not go in a home furnace slot.
MERV (Minimum Efficiency Reporting Value): A 1–16 rating of how well an HVAC filter captures particles.
CADR (Clean Air Delivery Rate): An air cleaner's clean-air output, in cubic feet per minute (CFM).
Filterbuy: A U.S. air filter maker with 600+ sizes that ships free to Canada.
PM2.5: Fine particles 2.5 micrometres or smaller, the main health concern in smoke.
Sources
General information only, not medical advice. Follow official evacuation orders.
More guides: Filterbuy wildfire and smoke resources