Pollen count and allergy info for St. Thomas
St. Thomas pollen and allergy report • 14:00, May 28
Index
Moderate
Tree
Low
Grass
Moderate
Weed
None
20°
20 km/h
51%Daily allergy forecast
St. Thomas pollen count forecast
Today  24 km/h20°10° 64% | Friday 26 km/h23°6° 63% | Saturday  21 km/h19°5° 57% |
Air pollutants
Air quality in St. Thomas today
AQI⁺
Air quality index
27*AQI⁺ US
PM2.5
Fine particles (≤ 2.5 µm)
4.9*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?
- Ajax3
- Algoma3
- Almonte3
- Amherstburg3
- Ancaster3
- Arnprior3
- Atikokan3
- Bainsville3
- Bancroft3
- Barrie3
- Belleville3
- Bells Corners3
- Bonner Lake3
- Bracebridge3
- Brampton3
- Brant3
- Brantford3
- Burlington3
- Caledon3
- Carleton Place3
- Casselman3
- Chatham3
- Clarence-Rockland3
- Cobourg3
- Concord3
- Deep River3
- Dryden3
- Ear Falls3
- East Garafraxa3
- East York3
- Egbert3
- Elliot Lake3
- Embrun3
- Englehart3
- Erin3
- Espanola3
- Gananoque3
- Geraldton3
- Greenstone3
- Hamilton3
- Hanover3
- Hawkesbury3
- Hearst3
- Hornepayne3
- Huron East3
- Iroquois Falls3
- Kapuskasing3
- Kasabonika3
- Kenora3
- Kenora District3
- Keswick3
- Kingston3
- Kirkland Lake3
- Larder Lake3
- Little Current3
- Marathon3
- Markham3
- Milton3
- Mississauga3
- Neebing3
- Nepean3
- Nestor Falls3
- Niagara on the Lake3
- North Perth3
- North York3
- Oakville3
- Orangeville3
- Oshawa3
- Ottawa3
- Parry Sound3
- Pembroke3
- Perth3
- Petawawa3
- Peterborough3
- Pickering3
- Pickle Lake3
- Port Elmsley3
- Prince Edward3
- Quinte West3
- Rayside-Balfour3
- Red Lake3
- Renfrew3
- Richmond Hill3
- Sault Ste. Marie3
- Sheguiandah3
- Shelburne3
- Sioux Narrows3
- Smiths Falls3
- St. Catharines3
- Temiskaming Shores3
- Thessalon3
- Thunder Bay3
- Timmins3
- Tobermory3
- Toronto3
- Uxbridge3
- Vaughan3
- Wasaga Beach3
- Wendover3
- Willowdale3
- Windsor3
- Wingham3
- Woodstock3
- Aylmer2
- Binbrook2
- Bluewater2
- Blyth2
- Bourget2
- Breslau2
- Cambridge2
- Collingwood2
- Delaware2
- Deseronto2
- Dorchester2
- Etobicoke2
- Goderich2
- Grand Bend2
- Greater Napanee2
- Greater Sudbury2
- Guelph2
- Hawkesville2
- Ingersoll2
- Kincardine2
- Kitchener2
- Lambton Shores2
- London2
- Mattawa2
- Midland2
- Napanee Downtown2
- New Hamburg2
- Newmarket2
- Niagara Falls2
- Norfolk County2
- North Bay2
- Owen Sound2
- Paris2
- Picton2
- Port Stanley2
- Powassan2
- Scarborough2
- Simcoe2
- Skatepark2
- South Huron2
- St. Thomas2
- Stratford2
- Thorold2
- Tiverton2
- Waterloo2
- Welland2
- Wellington County2
- Angus1
- Brockville1
- Camlachie1
- Coldwater1
- Cornwall1
- Dorset1
- Fort Erie1
- Fort Frances1
- Gravenhurst1
- Huntsville1
- Innisfil1
- Lindsay1
- Minden Hills1
- Morrisburg1
- Omemee1
- Orillia1
- Petrolia1
- Port Colborne1
- Prescott1
- Sarnia1
- South River1
- Walpole Island1
