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Guelph air right now

Low riskAQHI 1

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

1
AQHI now
4
PM2.5 · µg/m³
3 cleaner spots within 3 hr drive

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.

The Blue Mountains looks like the better move.93% cleaner air with a verified 2 h 15 min road trip. Rankings balance cleaner air with trip ease.

Every town is also available in the ranked list.
Guelph Clean · PM2.5 0–5 Good · 5–9 Elevated · 9–15 Polluted · 15–35 Unhealthy · 35–55 Severe · 55+
Top pick
Thornbury
Cel-shaded illustration of Thornbury
AQI 2
#1ThornburyChecking road route

Ontario· Good

Georgian Bay apple-country village near Collingwood, with a walkable harbourfront and bay air.

93% cleaner than home — pack the car.

PM2.5 is 0.3 µg/m³ here vs 4 back home.Berkeley Earth: 22 µg/m³ for 24 h ≈ 1 cigarette.A week at these levels: 0.3/22 × 7 = 0.1 here; 4/22 × 7 = 1.3 at home.A long-term health-risk equivalence, not literal smoking.See how we work it out →

3.7 µg/m³ less fine-particle pollution than Guelph right now

93% cleaner airChecking trip easeChecking nearby staysChecking today's weather

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

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

Directions
Meaford
Cel-shaded illustration of Meaford
AQI 3
#2MeafordChecking road route

Ontario· Good

Georgian Bay orchard town near Collingwood, with bay-air exposure and a walkable harbourfront.

88% cleaner than home — pack the car.

PM2.5 is 0.5 µg/m³ here vs 4 back home.Berkeley Earth: 22 µg/m³ for 24 h ≈ 1 cigarette.A week at these levels: 0.5/22 × 7 = 0.2 here; 4/22 × 7 = 1.3 at home.A long-term health-risk equivalence, not literal smoking.See how we work it out →

3.5 µg/m³ less fine-particle pollution than Guelph right now

88% cleaner airChecking trip easeChecking nearby staysChecking today's weather

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

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

Directions
Owen Sound
Cel-shaded illustration of Owen Sound
AQI 3
#3Owen SoundChecking road route

Ontario· Good

Georgian Bay port city at the base of the Bruce Peninsula, with bay air and a broad hotel base.

88% cleaner than home — pack the car.

PM2.5 is 0.5 µg/m³ here vs 4 back home.Berkeley Earth: 22 µg/m³ for 24 h ≈ 1 cigarette.A week at these levels: 0.5/22 × 7 = 0.2 here; 4/22 × 7 = 1.3 at home.A long-term health-risk equivalence, not literal smoking.See how we work it out →

3.5 µg/m³ less fine-particle pollution than Guelph right now

88% cleaner airChecking trip easeChecking nearby staysChecking today's weather

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

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

Directions
Port Perry
Cel-shaded illustration of Port Perry
AQHI 1
#4Port PerryChecking road route

Ontario· Low risk

Lake Scugog harbour town northeast of Toronto, an easy open-water escape with a historic Main Street.

83% cleaner than home — pack the car.

PM2.5 is 0.7 µg/m³ here vs 4 back home.Berkeley Earth: 22 µg/m³ for 24 h ≈ 1 cigarette.A week at these levels: 0.7/22 × 7 = 0.2 here; 4/22 × 7 = 1.3 at home.A long-term health-risk equivalence, not literal smoking.See how we work it out →

3.3 µg/m³ less fine-particle pollution than Guelph right now

83% cleaner airChecking trip easeChecking nearby staysChecking today's weather

AQHI 1: Low risk (Oshawa station)

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

AQHI from the Oshawa station. PM2.5 is estimated for this town.

Directions
Still smoky
Port Dover
Cel-shaded illustration of Port Dover
AQI 9
#5Port Dover~1 h 45 min drive

Ontario· Good

Lake Erie beach town with a palm-tree pier vibe and steady south-shore lake air.

About the same air — still smoky.

PM2.5 is 1.7 µg/m³ here vs 4 back home.Berkeley Earth: 22 µg/m³ for 24 h ≈ 1 cigarette.A week at these levels: 1.7/22 × 7 = 0.5 here; 4/22 × 7 = 1.3 at home.A long-term health-risk equivalence, not literal smoking.See how we work it out →

2.3 µg/m³ less fine-particle pollution than Guelph right now

57% 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
Turkey Point
Cel-shaded illustration of Turkey Point
AQI 9
#6Turkey Point~1 h 55 min drive

Ontario· Good

Low-key Lake Erie cottage beach beside marshes and vineyards, far from major highways.

About the same air — still smoky.

PM2.5 is 1.7 µg/m³ here vs 4 back home.Berkeley Earth: 22 µg/m³ for 24 h ≈ 1 cigarette.A week at these levels: 1.7/22 × 7 = 0.5 here; 4/22 × 7 = 1.3 at home.A long-term health-risk equivalence, not literal smoking.See how we work it out →

2.3 µg/m³ less fine-particle pollution than Guelph right now

57% 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
Kitchener-Waterloo
Cel-shaded illustration of Kitchener-Waterloo
AQHI 1
#7Kitchener-Waterloo~30 min drive

Ontario· Low risk

A major Ontario city with broad lodging options and live air-quality readings for comparison when smoke shifts across the region.

About the same air — still smoky.

PM2.5 is 3 µg/m³ here vs 4 back home.Berkeley Earth: 22 µg/m³ for 24 h ≈ 1 cigarette.A week at these levels: 3/22 × 7 = 1.0 here; 4/22 × 7 = 1.3 at home.A long-term health-risk equivalence, not literal smoking.See how we work it out →
25% cleaner airChecking trip easeChecking nearby staysChecking today's weather

AQHI 1: Low risk (Kitchener station)

Observed Aug 23, 5:00 p.m. EDT

AQHI from the Kitchener station. PM2.5 from the Kitchener monitor.

Directions
Still smoky
St. Jacobs
Cel-shaded illustration of St. Jacobs
AQI 17
#8St. Jacobs~40 min drive

Ontario· Good

Mennonite-country village and market just outside Waterloo, an easy countryside reset.

About the same air — still smoky.

PM2.5 is 3 µg/m³ here vs 4 back home.Berkeley Earth: 22 µg/m³ for 24 h ≈ 1 cigarette.A week at these levels: 3/22 × 7 = 1.0 here; 4/22 × 7 = 1.3 at home.A long-term health-risk equivalence, not literal smoking.See how we work it out →
25% cleaner airChecking trip easeChecking nearby staysChecking today's weather

AQHI 1: Low risk (Kitchener station)

Observed Aug 23, 5:00 p.m. EDT

AQHI from the Kitchener station. PM2.5 from the Kitchener monitor.

Directions
Still smoky
Stratford
Cel-shaded illustration of Stratford
AQI 17
#9Stratford~1 h 15 min drive

Ontario· Good

Festival town on the Avon River with a deep stock of inns and B&Bs.

About the same air — still smoky.

PM2.5 is 3 µg/m³ here vs 4 back home.Berkeley Earth: 22 µg/m³ for 24 h ≈ 1 cigarette.A week at these levels: 3/22 × 7 = 1.0 here; 4/22 × 7 = 1.3 at home.A long-term health-risk equivalence, not literal smoking.See how we work it out →
25% cleaner airChecking trip easeChecking nearby staysChecking today's weather

Observed Aug 23, 5:00 p.m. EDT

PM2.5 from the Kitchener monitor.

Directions
Still smoky
Fergus
Cel-shaded illustration of Fergus
AQHI 1
#10FergusChecking road route

Ontario· Low risk

Stone-built Grand River village beside Elora, a quiet countryside base with heritage inns.

About the same air — still smoky.

PM2.5 is 4 µg/m³ here vs 4 back home.Berkeley Earth: 22 µg/m³ for 24 h ≈ 1 cigarette.A week at these levels: 4/22 × 7 = 1.3 here; 4/22 × 7 = 1.3 at home.A long-term health-risk equivalence, not literal smoking.See how we work it out →
0% worse airChecking trip easeChecking nearby staysChecking today's weather

AQHI 1: Low risk (Guelph station)

Observed Aug 23, 5:00 p.m. EDT

AQHI from the Guelph station. PM2.5 from the Guelph monitor.

Directions
Still smoky
Elora
Cel-shaded illustration of Elora
AQI 22
#11Elora~25 min drive

Ontario· Good

Limestone village above the Elora Gorge, with a boutique mill hotel and quarry swimming.

About the same air — still smoky.

PM2.5 is 4 µg/m³ here vs 4 back home.Berkeley Earth: 22 µg/m³ for 24 h ≈ 1 cigarette.A week at these levels: 4/22 × 7 = 1.3 here; 4/22 × 7 = 1.3 at home.A long-term health-risk equivalence, not literal smoking.See how we work it out →
0% worse airChecking trip easeChecking nearby staysChecking today's weather

AQHI 1: Low risk (Guelph station)

Observed Aug 23, 5:00 p.m. EDT

AQHI from the Guelph station. PM2.5 from the Guelph monitor.

Directions
Still smoky
Brantford
Cel-shaded illustration of Brantford
AQHI 1
#12BrantfordChecking road route

Ontario· Low risk

A major Ontario city with broad lodging options and live air-quality readings for comparison when smoke shifts across the region.

About the same air — still smoky.

PM2.5 is 4 µg/m³ here vs 4 back home.Berkeley Earth: 22 µg/m³ for 24 h ≈ 1 cigarette.A week at these levels: 4/22 × 7 = 1.3 here; 4/22 × 7 = 1.3 at home.A long-term health-risk equivalence, not literal smoking.See how we work it out →
0% worse airChecking trip easeChecking nearby staysChecking today's weather

AQHI 1: Low risk (Brantford station)

Observed Aug 23, 5:00 p.m. EDT

AQHI from the Brantford station. PM2.5 from the Brantford monitor.

Directions
Lion's Head
Cel-shaded illustration of Lion's Head
AQI 0
#13Lion's HeadChecking road route

Ontario· Good

Bruce Peninsula village on a limestone-cliff harbour, wrapped in open Georgian Bay air.

100% cleaner than home — pack the car.

PM2.5 is 0 µg/m³ here vs 4 back home.Berkeley Earth: 22 µg/m³ for 24 h ≈ 1 cigarette.A week at these levels: 0/22 × 7 = 0 here; 4/22 × 7 = 1.3 at home.A long-term health-risk equivalence, not literal smoking.See how we work it out →

4 µg/m³ less fine-particle pollution than Guelph right now

100% cleaner airChecking trip easeChecking nearby staysChecking today's weather

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

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

Directions
Midland
Cel-shaded illustration of Midland
AQI 1
#14Midland~2 h 55 min drive

Ontario· Good

Harbour town on Georgian Bay’s 30,000 Islands shore, with bay cruises and shoreline trails.

95% cleaner than home — pack the car.

PM2.5 is 0.2 µg/m³ here vs 4 back home.Berkeley Earth: 22 µg/m³ for 24 h ≈ 1 cigarette.A week at these levels: 0.2/22 × 7 = 0.1 here; 4/22 × 7 = 1.3 at home.A long-term health-risk equivalence, not literal smoking.See how we work it out →

3.8 µg/m³ less fine-particle pollution than Guelph right now

95% 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
Collingwood
Cel-shaded illustration of Collingwood
AQI 2
#15Collingwood~2 h 10 min drive

Ontario· Good

Georgian Bay harbour town at the base of the Niagara Escarpment, with bay breezes and plenty of hotels and rentals.

93% cleaner than home — pack the car.

PM2.5 is 0.3 µg/m³ here vs 4 back home.Berkeley Earth: 22 µg/m³ for 24 h ≈ 1 cigarette.A week at these levels: 0.3/22 × 7 = 0.1 here; 4/22 × 7 = 1.3 at home.A long-term health-risk equivalence, not literal smoking.See how we work it out →

3.7 µg/m³ less fine-particle pollution than Guelph right now

93% 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
The Blue Mountains
Cel-shaded illustration of The Blue Mountains
AQI 2
#16The Blue Mountains~2 h 15 min drive

Ontario· Good

Resort village on Georgian Bay with escarpment elevation, a walkable pedestrian base and year-round lodging.

93% cleaner than home — pack the car.

PM2.5 is 0.3 µg/m³ here vs 4 back home.Berkeley Earth: 22 µg/m³ for 24 h ≈ 1 cigarette.A week at these levels: 0.3/22 × 7 = 0.1 here; 4/22 × 7 = 1.3 at home.A long-term health-risk equivalence, not literal smoking.See how we work it out →

3.7 µg/m³ less fine-particle pollution than Guelph right now

93% 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
Honey Harbour
Cel-shaded illustration of Honey Harbour
AQI 2
#17Honey HarbourChecking road route

Ontario· Good

Gateway to Georgian Bay's 30,000 Islands, with open-bay air and marina-side lodging.

93% cleaner than home — pack the car.

PM2.5 is 0.3 µg/m³ here vs 4 back home.Berkeley Earth: 22 µg/m³ for 24 h ≈ 1 cigarette.A week at these levels: 0.3/22 × 7 = 0.1 here; 4/22 × 7 = 1.3 at home.A long-term health-risk equivalence, not literal smoking.See how we work it out →

3.7 µg/m³ less fine-particle pollution than Guelph right now

93% cleaner airChecking trip easeChecking nearby staysChecking today's weather

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

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

Directions
Killarney
Cel-shaded illustration of Killarney
AQI 0
#18Killarney~6 h 35 min drive

Ontario· Good

Remote village beside Killarney Park’s white quartzite ridges, on the north channel of Georgian Bay.

100% cleaner than home — pack the car.

PM2.5 is 0 µg/m³ here vs 4 back home.Berkeley Earth: 22 µg/m³ for 24 h ≈ 1 cigarette.A week at these levels: 0/22 × 7 = 0 here; 4/22 × 7 = 1.3 at home.A long-term health-risk equivalence, not literal smoking.See how we work it out →

4 µg/m³ less fine-particle pollution than Guelph right now

100% 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
Little Current (Manitoulin Island)
Cel-shaded illustration of Little Current (Manitoulin Island)
AQI 0
#19Little Current (Manitoulin Island)~7 h 45 min drive

Ontario· Good

Manitoulin’s main harbour town, on the world’s largest freshwater island and surrounded by Huron’s North Channel.

100% cleaner than home — pack the car.

PM2.5 is 0 µg/m³ here vs 4 back home.Berkeley Earth: 22 µg/m³ for 24 h ≈ 1 cigarette.A week at these levels: 0/22 × 7 = 0 here; 4/22 × 7 = 1.3 at home.A long-term health-risk equivalence, not literal smoking.See how we work it out →

4 µg/m³ less fine-particle pollution than Guelph right now

100% 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
Tobermory
Cel-shaded illustration of Tobermory
AQI 2
#20Tobermory~4 h drive

Ontario· Good

Harbour village at the tip of the Bruce Peninsula, wrapped in open Lake Huron and Georgian Bay water with steady onshore breezes.

93% cleaner than home — pack the car.

PM2.5 is 0.3 µg/m³ here vs 4 back home.Berkeley Earth: 22 µg/m³ for 24 h ≈ 1 cigarette.A week at these levels: 0.3/22 × 7 = 0.1 here; 4/22 × 7 = 1.3 at home.A long-term health-risk equivalence, not literal smoking.See how we work it out →

3.7 µg/m³ less fine-particle pollution than Guelph right now

93% 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 (Guelph)Observed Aug 23, 5:00 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 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 qualityThunder Bay air qualityToronto air qualityVaughan air qualityWindsor air quality
Air quality in nearby cities →
Buffalo air qualityErie air qualityRochester air qualityCleveland air qualityDetroit air qualityYoungstown air qualityAkron air qualityCanton air qualitySyracuse air qualityToledo air qualityPittsburgh air qualityGrand Rapids air quality

What this means · Guelph

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 4 µg/m³ (Clean).

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 Clean.

4 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.

1.3/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 4 µg/m³.Berkeley Earth: 22 µg/m³ for 24 h ≈ 1 cigarette.A week at this level: 4/22 × 7 = 1.3 cigarettes.A long-term health-risk equivalence, not literal smoking.See how we work it out →
See the full method →