SmogRank / Episodes / Canada

Alberta, Canada, June 2026

For 1 day, on 29 June 2026, 10 cities in Canada had PM2.5 at least twice their usual for the time of year. The worst reading was Fort McMurray, Alberta, Canada: 55.2 µg/m³ on 29 June, about 5.8× its usual 9.6. Ended 29 June.

No cause namedWe have no fire or smoke records for these days, so we only say what the measurements show.
Cities reached10in 1 country
Days129 June 2026
Worst day29 June10 cities counted
Furthest above usual5.8×Fort McMurray

Day by day

29 June 10 cities at twice their usual or more
Sherwood ParkGrande PrairieSaskatoonDrayton ValleyCalgaryEdsonRed DeerGrand CentreEdmontonAirdrieSt. AlbertFort SaskatchewanFort McMurray
26 Jun272829301 Jul2
Every measured city in the area, coloured by its PM2.5 that day; a dark ring marks a city at twice its usual or more. Bars: cities counted each day, coloured by their median level. Choose a day or press play; without JavaScript, the days link to that day's world ranking.

How it spread

Fort McMurrayFort McMurray, 26 June: 5.5 µg/m³Fort McMurray, 27 June: 5.6 µg/m³Fort McMurray, 28 June: 24.1 µg/m³Fort McMurray, 29 June: 55.2 µg/m³, 5.8× its usual 9.6Fort McMurray, 30 June: 54.5 µg/m³Fort McMurray, 1 July: 54.2 µg/m³Fort McMurray, 2 July: 19.0 µg/m³Fort SaskatchewanFort Saskatchewan, 26 June: 4.5 µg/m³Fort Saskatchewan, 27 June: 4.0 µg/m³Fort Saskatchewan, 28 June: 6.7 µg/m³Fort Saskatchewan, 29 June: 44.6 µg/m³, 5.3× its usual 8.4Fort Saskatchewan, 30 June: 24.2 µg/m³Fort Saskatchewan, 1 July: 21.1 µg/m³Fort Saskatchewan, 2 July: 6.8 µg/m³EdmontonEdmonton, 26 June: 4.4 µg/m³Edmonton, 27 June: 4.2 µg/m³Edmonton, 28 June: 6.0 µg/m³Edmonton, 29 June: 41.2 µg/m³, 4.0× its usual 10.4Edmonton, 30 June: 23.7 µg/m³Edmonton, 1 July: 17.5 µg/m³Edmonton, 2 July: 5.5 µg/m³St. AlbertSt. Albert, 26 June: 3.1 µg/m³St. Albert, 27 June: 2.8 µg/m³St. Albert, 28 June: 4.3 µg/m³St. Albert, 29 June: 37.1 µg/m³, 4.9× its usual 7.6St. Albert, 30 June: 23.5 µg/m³St. Albert, 1 July: 13.8 µg/m³St. Albert, 2 July: 3.7 µg/m³Grand CentreGrand Centre, 26 June: 4.9 µg/m³Grand Centre, 27 June: 4.4 µg/m³Grand Centre, 28 June: 6.3 µg/m³Grand Centre, 29 June: 32.9 µg/m³, 4.0× its usual 8.2Grand Centre, 30 June: 36.1 µg/m³Grand Centre, 1 July: 42.5 µg/m³Grand Centre, 2 July: 17.5 µg/m³Red DeerRed Deer, 26 June: 4.3 µg/m³Red Deer, 27 June: 4.0 µg/m³Red Deer, 28 June: 4.7 µg/m³Red Deer, 29 June: 29.2 µg/m³, 3.9× its usual 7.4Red Deer, 30 June: 24.2 µg/m³Red Deer, 1 July: 20.5 µg/m³Red Deer, 2 July: 5.1 µg/m³CalgaryCalgary, 26 June: 7.9 µg/m³Calgary, 27 June: 4.1 µg/m³Calgary, 28 June: 3.3 µg/m³Calgary, 29 June: 29.2 µg/m³, 3.7× its usual 7.8Calgary, 30 June: 43.2 µg/m³Calgary, 1 July: 20.6 µg/m³Calgary, 2 July: 5.9 µg/m³Drayton ValleyDrayton Valley, 26 June: 5.1 µg/m³Drayton Valley, 27 June: 3.4 µg/m³Drayton Valley, 28 June: 4.1 µg/m³Drayton Valley, 29 June: 29.2 µg/m³, 3.7× its usual 7.8Drayton Valley, 30 June: 24.9 µg/m³Drayton Valley, 1 July: 11.1 µg/m³Drayton Valley, 2 July: 1.2 µg/m³AirdrieAirdrie, 26 June: 6.0 µg/m³Airdrie, 27 June: 3.2 µg/m³Airdrie, 28 June: 2.6 µg/m³Airdrie, 29 June: 27.3 µg/m³, 4.5× its usual 6.1Airdrie, 30 June: 32.4 µg/m³Airdrie, 1 July: 16.4 µg/m³Airdrie, 2 July: 4.3 µg/m³EdsonEdson, 26 June: 6.6 µg/m³Edson, 27 June: 2.8 µg/m³Edson, 28 June: 3.3 µg/m³Edson, 29 June: 26.2 µg/m³, 3.8× its usual 6.9Edson, 30 June: 17.6 µg/m³Edson, 1 July: 4.6 µg/m³Edson, 2 July: 3.6 µg/m³26 Jun272829301 Jul2
Every counted city, in the order the episode reached them, 3 days before to 3 after. Each square is a day, coloured by that day's PM2.5; outlined: at twice the city's usual or more.
Good0–50
Moderate51–100
Sensitive groups101–150
Unhealthy151–200
Very unhealthy201–300
Hazardous301+

Every city it reached

CityDaysHighestUsualAbove usual
Fort McMurrayAlberta, Canada1 55.229 June9.65.8×
Fort SaskatchewanAlberta, Canada1 44.629 June8.45.3×
St. AlbertAlberta, Canada1 37.129 June7.64.9×
AirdrieAlberta, Canada1 27.329 June6.14.5×
EdmontonAlberta, Canada1 41.229 June10.44.0×
Grand CentreAlberta, Canada1 32.929 June8.24.0×
Red DeerAlberta, Canada1 29.229 June7.43.9×
EdsonAlberta, Canada1 26.229 June6.93.8×
CalgaryAlberta, Canada1 29.229 June7.83.7×
Drayton ValleyAlberta, Canada1 29.229 June7.83.7×

Daily means in µg/m³, over the days each city counted in this episode. Highest: its highest of those days. Usual: the city's median for the time of year of that day (its days within 21 days of the date, every year, leaving out the week around it). Above usual: its highest day against that, with a usual under 5 µg/m³ taken as 5.

Against other episodes in Canada

Number 34 of 43 episodes in Canada since our records began, by cities reached.

Bars: cities reached; colour: the level of the episode's highest daily reading. All 43.

Use this page

SmogRank, Alberta, Canada, June 2026: 10 cities with PM2.5 at twice their usual or more, 29 June 2026, smogrank.com/episodes/2026-06-alberta-canada (accessed 5 October 2026).

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You're welcome to reuse a single chart, image or figure with this citation and a link. Terms.

An episode is a run of days when many cities close to each other (four or more within 350 km on a day, 8 or more in all) each had a daily PM2.5 mean of at least 25 µg/m³ and at least 2 times their usual for that time of year. Found in our own measurements, not picked by hand. How we find episodes. Values are each city's daily mean of its own monitors; causes are the usual kinds for a pattern like this, not a confirmed source.