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Thunder Bay air right now

Low riskAQHI 1

Thunder Bay’s five-day smoke forecast shows the current index and the clearest time ahead.

1
AQHI now
2.8
PM2.5 · µg/m³
Look farther for cleaner air

Where are you?

Search covers Canada and the United States.

The better move within a 3-hour drive

Dates

Dates follow you into hotel searches. Live inventory is confirmed by the provider.

You may already have the cleanest nearby air.No meaningfully cleaner place has a verified road route within 3 hours. Widen the range or show worse air for context.

Every town is also available in the ranked list.
Thunder Bay Clean · PM2.5 0–5 Good · 5–9 Elevated · 9–15 Polluted · 15–35 Unhealthy · 35–55 Severe · 55+
Top pick
Grand Marais
Cel-shaded illustration of Grand Marais
AQI 7
#1Grand Marais~1 h 45 min drive

Minnesota· Good

Harbour town on Lake Superior's North Shore beneath the Sawtooth hills, wrapped in the big lake's cool air, with inns and cabins.

About the same air — still smoky.

PM2.5 is 1.3 µg/m³ here vs 2.8 back home.Berkeley Earth: 22 µg/m³ for 24 h ≈ 1 cigarette.A week at these levels: 1.3/22 × 7 = 0.4 here; 2.8/22 × 7 = 0.9 at home.A long-term health-risk equivalence, not literal smoking.See how we work it out →
54% cleaner airChecking trip easeChecking nearby staysChecking today's weather

Observed Aug 23, 6:12 p.m. EDT

PM2.5 is estimated for this town.

Directions
Still smoky
Nipigon
Cel-shaded illustration of Nipigon
AQI 14
#2Nipigon~1 h 45 min drive

Ontario· Good

Where the Nipigon River meets Superior’s north shore, under some of Ontario’s biggest cliffs.

About the same air — still smoky.

PM2.5 is 2.6 µg/m³ here vs 2.8 back home.Berkeley Earth: 22 µg/m³ for 24 h ≈ 1 cigarette.A week at these levels: 2.6/22 × 7 = 0.8 here; 2.8/22 × 7 = 0.9 at home.A long-term health-risk equivalence, not literal smoking.See how we work it out →
7% cleaner airChecking trip easeChecking nearby staysChecking today's weather

Observed Aug 23, 6:12 p.m. EDT

PM2.5 is estimated for this town.

Directions
Still smoky
Shuniah Township
Cel-shaded illustration of Shuniah Township
AQI unavailable
#3Shuniah TownshipChecking road route

Ontario

Ontario community with a cached air reading available when it appears in a nearby escape search.

Air comparison pending.

Air comparison pendingChecking trip easeChecking nearby staysChecking today's weather

PM2.5 is modelled for this town. No AQHI station is close enough.

Directions
Still smoky
Lappe
Cel-shaded illustration of Lappe
AQI unavailable
#4LappeChecking road route

Ontario

Ontario community with a cached air reading available when it appears in a nearby escape search.

Air comparison pending.

Air comparison pendingChecking trip easeChecking nearby staysChecking today's weather

PM2.5 is modelled for this town. No AQHI station is close enough.

Directions
Still smoky
Neebing
Cel-shaded illustration of Neebing
AQI unavailable
#5NeebingChecking road route

Ontario

Ontario community with a cached air reading available when it appears in a nearby escape search.

Air comparison pending.

Air comparison pendingChecking trip easeChecking nearby staysChecking today's weather

PM2.5 is modelled for this town. No AQHI station is close enough.

Directions
Still smoky
Amethyst Harbour
Cel-shaded illustration of Amethyst Harbour
AQI unavailable
#6Amethyst HarbourChecking road route

Ontario

Ontario community with a cached air reading available when it appears in a nearby escape search.

Air comparison pending.

Air comparison pendingChecking trip easeChecking nearby staysChecking today's weather

PM2.5 is modelled for this town. No AQHI station is close enough.

Directions
Still smoky
Lutsen
Cel-shaded illustration of Lutsen
AQI 9
#7LutsenChecking road route

Minnesota· Good

North Shore ski resort above Lake Superior, with ridge-and-lake air far from any urban plume.

About the same air — still smoky.

PM2.5 is 1.7 µg/m³ here vs 2.8 back home.Berkeley Earth: 22 µg/m³ for 24 h ≈ 1 cigarette.A week at these levels: 1.7/22 × 7 = 0.5 here; 2.8/22 × 7 = 0.9 at home.A long-term health-risk equivalence, not literal smoking.See how we work it out →
39% cleaner airChecking trip easeChecking nearby staysChecking today's weather

Observed Aug 23, 6:27 p.m. EDT

PM2.5 is estimated for this town.

Directions
Still smoky
Tofte
Cel-shaded illustration of Tofte
AQI 9
#8TofteChecking road route

Minnesota· Good

Small North Shore village on Lake Superior between Duluth and the Canadian border, with lodges.

About the same air — still smoky.

PM2.5 is 1.7 µg/m³ here vs 2.8 back home.Berkeley Earth: 22 µg/m³ for 24 h ≈ 1 cigarette.A week at these levels: 1.7/22 × 7 = 0.5 here; 2.8/22 × 7 = 0.9 at home.A long-term health-risk equivalence, not literal smoking.See how we work it out →
39% cleaner airChecking trip easeChecking nearby staysChecking today's weather

Observed Aug 23, 6:27 p.m. EDT

PM2.5 is estimated for this town.

Directions
Still smoky
Houghton
Cel-shaded illustration of Houghton
AQI 12
#9HoughtonChecking road route

Michigan· Good

Keweenaw Peninsula college town on a Lake Superior waterway, with hillside hotels and lake-cooled air.

About the same air — still smoky.

PM2.5 is 2.2 µg/m³ here vs 2.8 back home.Berkeley Earth: 22 µg/m³ for 24 h ≈ 1 cigarette.A week at these levels: 2.2/22 × 7 = 0.7 here; 2.8/22 × 7 = 0.9 at home.A long-term health-risk equivalence, not literal smoking.See how we work it out →
21% cleaner airChecking trip easeChecking nearby staysChecking today's weather

Observed Aug 23, 6:27 p.m. EDT

PM2.5 is estimated for this town.

Directions
Still smoky
Copper Harbor
Cel-shaded illustration of Copper Harbor
AQI 13
#10Copper HarborChecking road route

Michigan· Good

Remote village at the tip of the Keweenaw Peninsula, surrounded by Lake Superior on three sides.

About the same air — still smoky.

PM2.5 is 2.3 µg/m³ here vs 2.8 back home.Berkeley Earth: 22 µg/m³ for 24 h ≈ 1 cigarette.A week at these levels: 2.3/22 × 7 = 0.7 here; 2.8/22 × 7 = 0.9 at home.A long-term health-risk equivalence, not literal smoking.See how we work it out →
18% cleaner airChecking trip easeChecking nearby staysChecking today's weather

Observed Aug 23, 6:27 p.m. EDT

PM2.5 is estimated for this town.

Directions
Still smoky
Rossport
Cel-shaded illustration of Rossport
AQI 13
#11Rossport~2 h 45 min drive

Ontario· Good

Tiny island-sheltered harbour village on Lake Superior, a favourite calm-air stop on the north shore.

About the same air — still smoky.

PM2.5 is 2.3 µg/m³ here vs 2.8 back home.Berkeley Earth: 22 µg/m³ for 24 h ≈ 1 cigarette.A week at these levels: 2.3/22 × 7 = 0.7 here; 2.8/22 × 7 = 0.9 at home.A long-term health-risk equivalence, not literal smoking.See how we work it out →
18% cleaner airChecking trip easeChecking nearby staysChecking today's weather

Observed Aug 23, 6:12 p.m. EDT

PM2.5 is estimated for this town.

Directions
Still smoky
Batchawana Bay
Cel-shaded illustration of Batchawana Bay
AQI 3
#12Batchawana Bay~9 h drive

Ontario· Good

Sweeping Lake Superior bay north of the Soo, with cabins and motels right on the sand.

About the same air — still smoky.

PM2.5 is 0.6 µg/m³ here vs 2.8 back home.Berkeley Earth: 22 µg/m³ for 24 h ≈ 1 cigarette.A week at these levels: 0.6/22 × 7 = 0.2 here; 2.8/22 × 7 = 0.9 at home.A long-term health-risk equivalence, not literal smoking.See how we work it out →

2.2 µg/m³ less fine-particle pollution than Thunder Bay right now

79% cleaner airChecking trip easeChecking nearby staysChecking today's weather

Observed Aug 23, 6:12 p.m. EDT

PM2.5 is estimated for this town.

Directions
Still smoky
Mackinac Island
Cel-shaded illustration of Mackinac Island
AQI 4
#13Mackinac IslandChecking road route

Michigan· Good

Car-free island where Lakes Huron and Michigan nearly meet, wrapped in open-water air, with grand hotels.

About the same air — still smoky.

PM2.5 is 0.7 µg/m³ here vs 2.8 back home.Berkeley Earth: 22 µg/m³ for 24 h ≈ 1 cigarette.A week at these levels: 0.7/22 × 7 = 0.2 here; 2.8/22 × 7 = 0.9 at home.A long-term health-risk equivalence, not literal smoking.See how we work it out →

2.1 µg/m³ less fine-particle pollution than Thunder Bay right now

75% cleaner airChecking trip easeChecking nearby staysChecking today's weather

Observed Aug 23, 6:27 p.m. EDT

PM2.5 is estimated for this town.

Directions
Still smoky
Charlevoix
Cel-shaded illustration of Charlevoix
AQI 4
#14CharlevoixChecking road route

Michigan· Good

Resort town between Lake Michigan and Lake Charlevoix, with open-water air on both sides and grand hotels.

About the same air — still smoky.

PM2.5 is 0.7 µg/m³ here vs 2.8 back home.Berkeley Earth: 22 µg/m³ for 24 h ≈ 1 cigarette.A week at these levels: 0.7/22 × 7 = 0.2 here; 2.8/22 × 7 = 0.9 at home.A long-term health-risk equivalence, not literal smoking.See how we work it out →

2.1 µg/m³ less fine-particle pollution than Thunder Bay right now

75% cleaner airChecking trip easeChecking nearby staysChecking today's weather

Observed Aug 23, 6:27 p.m. EDT

PM2.5 is estimated for this town.

Directions
Still smoky
Leland
Cel-shaded illustration of Leland
AQI 4
#15LelandChecking road route

Michigan· Good

Historic Fishtown harbor village on the Leelanau Peninsula, cooled by Lake Michigan air, with inns.

About the same air — still smoky.

PM2.5 is 0.7 µg/m³ here vs 2.8 back home.Berkeley Earth: 22 µg/m³ for 24 h ≈ 1 cigarette.A week at these levels: 0.7/22 × 7 = 0.2 here; 2.8/22 × 7 = 0.9 at home.A long-term health-risk equivalence, not literal smoking.See how we work it out →

2.1 µg/m³ less fine-particle pollution than Thunder Bay right now

75% cleaner airChecking trip easeChecking nearby staysChecking today's weather

Observed Aug 23, 6:27 p.m. EDT

PM2.5 is estimated for this town.

Directions
Still smoky
Suttons Bay
Cel-shaded illustration of Suttons Bay
AQI 4
#16Suttons BayChecking road route

Michigan· Good

Leelanau Peninsula wine-country village on Grand Traverse Bay, with open-bay air and small inns.

About the same air — still smoky.

PM2.5 is 0.7 µg/m³ here vs 2.8 back home.Berkeley Earth: 22 µg/m³ for 24 h ≈ 1 cigarette.A week at these levels: 0.7/22 × 7 = 0.2 here; 2.8/22 × 7 = 0.9 at home.A long-term health-risk equivalence, not literal smoking.See how we work it out →

2.1 µg/m³ less fine-particle pollution than Thunder Bay right now

75% cleaner airChecking trip easeChecking nearby staysChecking today's weather

Observed Aug 23, 6:27 p.m. EDT

PM2.5 is estimated for this town.

Directions
Still smoky
Boyne City
Cel-shaded illustration of Boyne City
AQI 4
#17Boyne CityChecking road route

Michigan· Good

Northern Michigan town at the head of Lake Charlevoix, an open-water base with resorts and rentals.

About the same air — still smoky.

PM2.5 is 0.7 µg/m³ here vs 2.8 back home.Berkeley Earth: 22 µg/m³ for 24 h ≈ 1 cigarette.A week at these levels: 0.7/22 × 7 = 0.2 here; 2.8/22 × 7 = 0.9 at home.A long-term health-risk equivalence, not literal smoking.See how we work it out →

2.1 µg/m³ less fine-particle pollution than Thunder Bay right now

75% cleaner airChecking trip easeChecking nearby staysChecking today's weather

Observed Aug 23, 6:27 p.m. EDT

PM2.5 is estimated for this town.

Directions
Still smoky
Ludington
Cel-shaded illustration of Ludington
AQI 4
#18LudingtonChecking road route

Michigan· Good

Lake Michigan port town with a long public beach, swept by onshore lake wind, with harborside inns.

About the same air — still smoky.

PM2.5 is 0.7 µg/m³ here vs 2.8 back home.Berkeley Earth: 22 µg/m³ for 24 h ≈ 1 cigarette.A week at these levels: 0.7/22 × 7 = 0.2 here; 2.8/22 × 7 = 0.9 at home.A long-term health-risk equivalence, not literal smoking.See how we work it out →

2.1 µg/m³ less fine-particle pollution than Thunder Bay right now

75% cleaner airChecking trip easeChecking nearby staysChecking today's weather

Observed Aug 23, 6:27 p.m. EDT

PM2.5 is estimated for this town.

Directions
Still smoky
Mackinaw City
Cel-shaded illustration of Mackinaw City
AQI 4
#19Mackinaw City~11 h 5 min drive

Michigan· Good

Town at the Straits of Mackinac where Lakes Michigan and Huron meet, swept by open-water wind, with motels and ferry-side lodging.

About the same air — still smoky.

PM2.5 is 0.7 µg/m³ here vs 2.8 back home.Berkeley Earth: 22 µg/m³ for 24 h ≈ 1 cigarette.A week at these levels: 0.7/22 × 7 = 0.2 here; 2.8/22 × 7 = 0.9 at home.A long-term health-risk equivalence, not literal smoking.See how we work it out →

2.1 µg/m³ less fine-particle pollution than Thunder Bay right now

75% cleaner airChecking trip easeChecking nearby staysChecking today's weather

Observed Aug 23, 6:12 p.m. EDT

PM2.5 is estimated for this town.

Directions
Still smoky
Petoskey
Cel-shaded illustration of Petoskey
AQI 4
#20Petoskey~11 h 55 min drive

Michigan· Good

Resort town on Little Traverse Bay along Lake Michigan's northern shore, cooled by open-bay air, with historic inns and hotels.

About the same air — still smoky.

PM2.5 is 0.7 µg/m³ here vs 2.8 back home.Berkeley Earth: 22 µg/m³ for 24 h ≈ 1 cigarette.A week at these levels: 0.7/22 × 7 = 0.2 here; 2.8/22 × 7 = 0.9 at home.A long-term health-risk equivalence, not literal smoking.See how we work it out →

2.1 µg/m³ less fine-particle pollution than Thunder Bay right now

75% cleaner airChecking trip easeChecking nearby staysChecking today's weather

Observed Aug 23, 6:12 p.m. EDT

PM2.5 is estimated for this town.

Directions
Bad week ahead? Check the 7-day outlook — if it won’t clear, book the trip

7-day outlook

Plan the next seven days

Pick a day, or compare the whole week. Weather is forecast; air quality is the latest available reading.

Loading the week…

Finding the nicest days and reachable cities.

AQHI 1: Low risk (Thunder Bay)Observed Aug 23, 6:12 p.m. EDTLast scan Aug 23, 6:27 p.m. EDT · 49 min ago

Why live rankings? Smoke plumes are patchy and shift with the wind, so no direction is reliably cleaner. This list is recalculated from live PM2.5 every hour — and if everything nearby is smoky, it says so.

How we work this out →

Browse all 200 cities by province & state →

More air-quality pages in Ontario →
Barrie air qualityBelleville air qualityBrampton air qualityBrantford air qualityGreater Sudbury air qualityGuelph air qualityHamilton air qualityKingston air qualityKitchener-Waterloo air qualityLondon air qualityMarkham air qualityMississauga air qualityNorth Bay air qualityOshawa air qualityOttawa air qualityPeterborough air qualitySault Ste. Marie air qualitySt. Catharines air qualityToronto air qualityVaughan air qualityWindsor air quality
Air quality in nearby cities →
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What this means · Thunder Bay

Low risk

AQHI 1

AQHI = Air Quality Health Index

Typical person. Ideal air for usual outdoor plans.

Kids, seniors, heart or lung conditions. People with heart or lung conditions can usually keep their normal outdoor routine.

Particles here are 2.8 µg/m³ (Natural).

Act two · Fine particles only

Where PM2.5 lands

This bar is smoke and fine particles (PM2.5) only — not the full AQHI mix. Left is cleaner air; right is heavier particle pollution. Today's particles sit in Natural.

2.8 µg/m³
Clean · 0Smoky · 40Severe · 80+

Act three · Particle ladder

What each PM2.5 rung feels like

  • 0–3µg/m³Natural. About as clean as outdoor air realistically gets.
  • 3–5µg/m³Clean. Crisp, destination-worthy air.
  • 5–9µg/m³Good. Clean city air; most people will not notice anything today.
  • 9–15µg/m³Elevated. Usually no big deal today; sensitive lungs may notice hard exercise.
  • 15–35µg/m³Polluted. Smoke or traffic pollution is now worth acting on.
  • 35–55µg/m³Unhealthy. Symptoms become more likely, especially with asthma or heart disease.
  • 55+µg/m³Severe. Everyone should reduce exposure and clean the indoor air.

Act four · Felt number

Cigarettes a week

A secondary feel for the particle load only — not a medical claim, and not a substitute for AQHI.

0.9/wk

What is PM2.5?

Fine particles about 30× thinner than a human hair — small enough to slip through your lungs and into your bloodstream. We measure them inµg/m³: micrograms of particle mass in a cubic metre of air.

The math

PM2.5 here is 2.8 µg/m³.Berkeley Earth: 22 µg/m³ for 24 h ≈ 1 cigarette.A week at this level: 2.8/22 × 7 = 0.9 cigarettes.A long-term health-risk equivalence, not literal smoking.See how we work it out →
See the full method →