WildfireSmokeCanada

Ontario — air quality right now

Every monitor in one view · PM2.5 only · updated Oct 14, 11:28PM EDT

Right now

93555125225
1 µg/m³ Good

Median NowCast across reporting stations

Worst right now: Thunder Bay — 4 µg/m³ (Good)

39 of 40 stations reporting in the last 6 hours

Stations by air-quality category 39 reporting

Good: 39
Good · 39

Highest readings right now

Thunder Bay4 µg/m³Good
Toronto Downtown4 µg/m³Good
Windsor Downtown3 µg/m³Good
Brantford3 µg/m³Good
Windsor West3 µg/m³Good
All stations (40)
StationNowCastCategory48 h forecast peak
Thunder Bay4 µg/m³Good18 µg/m³
Toronto Downtown4 µg/m³Good6 µg/m³
Windsor Downtown3 µg/m³Good6 µg/m³
Brantford3 µg/m³Good6 µg/m³
Windsor West3 µg/m³Good6 µg/m³
Cornwall2 µg/m³Good4 µg/m³
Toronto East2 µg/m³Good6 µg/m³
London2 µg/m³Good6 µg/m³
Chatham2 µg/m³Good5 µg/m³
Bonner Lake2 µg/m³Good3 µg/m³
Parry Sound2 µg/m³Good2 µg/m³
Sault Ste Marie2 µg/m³Good5 µg/m³
Toronto North2 µg/m³Good16 µg/m³
Barrie2 µg/m³Good4 µg/m³
Ottawa Downtown2 µg/m³Good17 µg/m³
Oshawa2 µg/m³Good5 µg/m³
Port Stanley2 µg/m³Good3 µg/m³
Toronto West1 µg/m³Good11 µg/m³
Sudbury1 µg/m³Good4 µg/m³
Belleville1 µg/m³Good3 µg/m³
Peterborough1 µg/m³Good2 µg/m³
Hamilton West1 µg/m³Good5 µg/m³
St. Catharines1 µg/m³Good6 µg/m³
Burlington1 µg/m³Good5 µg/m³
Kingston1 µg/m³Good3 µg/m³
Kitchener1 µg/m³Good7 µg/m³
Guelph1 µg/m³Good4 µg/m³
Hamilton Downtown1 µg/m³Good8 µg/m³
Hamilton Mountain1 µg/m³Good5 µg/m³
Sarnia1 µg/m³Good4 µg/m³
Dorset1 µg/m³Good1 µg/m³
Grand Bend1 µg/m³Good5 µg/m³
Oakville1 µg/m³Good7 µg/m³
Brampton1 µg/m³Good7 µg/m³
Mississauga1 µg/m³Good8 µg/m³
Egbert1 µg/m³Good2 µg/m³
Newmarket1 µg/m³Good2 µg/m³
North Bay1 µg/m³Good1 µg/m³
Milton0 µg/m³Good6 µg/m³
Tiverton— no recent data—3 µg/m³

City forecast pages — Ontario

Toronto · Ottawa · Hamilton · Mississauga · London · Kitchener-Waterloo · Guelph · Windsor · Barrie · Kingston · Belleville · Sault Ste. Marie · Parry Sound · Thunder Bay

Wildfires across the province or territory

Province-wide

Fire snapshot updated 2026-10-15 03:20 UTC

Agencies report 10 active incidents: 6 Out of control · 4 Under control.

Out of control6 fires
FOR_FIRE_015
42273 ha · reported 2026-08-26 · ON
Out of control
FOR_FIRE_013
25476 ha · reported 2026-08-26 · ON
Out of control
COC_FIRE_043
500 ha · reported 2026-08-19 · ON
Out of control
THU_FIRE_060
419 ha · reported 2026-08-15 · ON
Out of control
NIP_FIRE_025
254 ha · reported 2026-07-22 · ON
Out of control
WAW_FIRE_035
6.5 ha · reported 2026-10-12 · ON
Out of control
Being held0 fires

No being held fires are reported in this province or territory.

Under control4 fires
THU_FIRE_036
301240 ha · reported 2026-09-17 · ON
Under control
FOR_FIRE_014
51928.3 ha · reported 2026-09-04 · ON
Under control
DRY_FIRE_034
45800 ha · reported 2026-09-16 · ON
Under control
DRY_FIRE_035
30158.6 ha · reported 2026-09-16 · ON
Under control

Sources: BC Wildfire Service in British Columbia; Natural Resources Canada CWFIS elsewhere.