Pollen count and allergy info for St. Thomas
St. Thomas pollen and allergy report • 11:00, Jul 21
Index
Low
Tree
None
Grass
Low
Weed
None
29°
26 km/h
65%Daily allergy forecast
St. Thomas pollen count forecast
Today  28 km/h29°18° 86% | Wednesday 27 km/h 17°13° 83% | Thursday  14 km/h 24°11° 52% |
Air pollutants
Air quality in St. Thomas today
AQI⁺
Air quality index
69*AQI⁺ US
PM2.5
Fine particles (≤ 2.5 µm)
18.9*µg/m³
Learn more about pollen in St. Thomas
Protect yourself from air pollution in St. Thomas
Protect yourself from air pollution in St. Thomas
Monitor the air you breathe
Get accurate AirVisual air quality readings and real-time insights for cleaner air. Monitors that reveal pollution sources, highlight when air purifier use is needed.
Medical grade air purifiers
Trusted worldwide, the HealthPro Series uses HyperHEPA technology. Filters ultrafine particles other air purifiers miss, delivering medical-grade protection.
Powerful, stylish air purifiers
Compact and powerful, the Atem Series combines Swiss engineering with high-performance air purification, filtering ultrafine particles with HyperHEPA technology.
Download our Air Quality App
Where is the highest pollen level in Ontario?
- Cornwall3
- Fort Erie3
- Morrisburg3
- Walpole Island3
- Ajax2
- Algoma2
- Almonte2
- Angus2
- Arnprior2
- Bainsville2
- Bancroft2
- Barrie2
- Belleville2
- Bells Corners2
- Bluewater2
- Blyth2
- Bourget2
- Bracebridge2
- Brampton2
- Breslau2
- Brockville2
- Caledon2
- Cambridge2
- Camlachie2
- Carleton Place2
- Casselman2
- Chatham2
- Clarence-Rockland2
- Cobourg2
- Coldwater2
- Collingwood2
- Deep River2
- Delaware2
- Deseronto2
- Dorset2
- East Garafraxa2
- Egbert2
- Embrun2
- Englehart2
- Erin2
- Espanola2
- Fort Frances2
- Gananoque2
- Goderich2
- Grand Bend2
- Gravenhurst2
- Greater Napanee2
- Guelph2
- Hanover2
- Hawkesbury2
- Hawkesville2
- Huntsville2
- Huron East2
- Ingersoll2
- Innisfil2
- Keswick2
- Kincardine2
- Kitchener2
- Lambton Shores2
- Lindsay2
- Little Current2
- Markham2
- Midland2
- Milton2
- Minden Hills2
- Napanee Downtown2
- Neebing2
- Nepean2
- New Hamburg2
- Newmarket2
- Norfolk County2
- North Perth2
- Omemee2
- Orangeville2
- Orillia2
- Oshawa2
- Ottawa2
- Owen Sound2
- Paris2
- Pembroke2
- Perth2
- Petawawa2
- Peterborough2
- Petrolia2
- Pickering2
- Picton2
- Port Elmsley2
- Prescott2
- Prince Edward2
- Quinte West2
- Renfrew2
- Sarnia2
- Sault Ste. Marie2
- Sheguiandah2
- Shelburne2
- Simcoe2
- Skatepark2
- Smiths Falls2
- South Huron2
- South River2
- Stratford2
- Thessalon2
- Thunder Bay2
- Tiverton2
- Tobermory2
- Uxbridge2
- Waterloo2
- Welland2
- Wellington County2
- Wendover2
- Wingham2
- Woodstock2
- Amherstburg1
- Ancaster1
- Atikokan1
- Aylmer1
- Binbrook1
- Brant1
- Brantford1
- Burlington1
- Concord1
- Dorchester1
- Dryden1
- East York1
- Elliot Lake1
- Etobicoke1
- Greater Sudbury1
- Hamilton1
- Hornepayne1
- Kasabonika1
- Kenora1
- Kenora District1
- Kingston1
- London1
- Marathon1
- Mattawa1
- Mississauga1
- Nestor Falls1
- Niagara Falls1
- Niagara on the Lake1
- North Bay1
- North York1
- Oakville1
- Parry Sound1
- Pickle Lake1
- Port Colborne1
- Port Stanley1
- Powassan1
- Rayside-Balfour1
- Richmond Hill1
- Scarborough1
- Sioux Narrows1
- St. Catharines1
- St. Thomas1
- Temiskaming Shores1
- Thorold1
- Toronto1
- Vaughan1
- Wasaga Beach1
- Willowdale1
- Windsor1
- Bonner Lake0
- Ear Falls0
- Geraldton0
- Greenstone0
- Hearst0
- Iroquois Falls0
- Kapuskasing0
- Kirkland Lake0
- Larder Lake0
- Red Lake0
- Timmins0
