Pollen Count in London, Ontario
What is the pollen count in London today?
Tap in your postal code above to see the pollen count today in London.
Use Your Pollen Pal to see if your hay fever allergy will be trigger
in specific regions – whether at home, work or out in the park.
Pollen forecast for London
Planning a summer picnic in Victoria Park or a walk along the Thames
River? Check out our daily pollen tracker so you know the London
Pollen Month-by-Month in London
With snow covering most of London, this month has a low pollen
count. Allergies within January are most likely due to mold or pets.
If you’re having trouble distinguishing between hay fever and a
check out our guide
to figure out the differences.
So long as the freezing temperatures continue
in London, pollen seldom makes its presence felt this early in the
The first month of spring brings with it the
tree pollen season. Trees in season include Cedars, Hazels, Alders, Elms, Maples,
Willows, Poplars, Pines and Oaks.
April showers welcome grass pollen and
specifically, Kentucky grass which is the first representative of
the upcoming season. Tree pollen remains the dominant pollen
producer in London during April.
Kentucky, Bermuda, Johnson, orchard, and Timothy
grasses spread their pollen evenly across London, while sycamore
trees also pollenate.
In June, pines, birch and oaks are the main
producers of tree pollen. Sweet vernal also joins the party, adding
its pollen to the other grasses.
In July, grass pollen is peaking in London, while
the majority of tree pollen production is coming to an end for
The good news is that tree pollen production has
peaked with the exception of a few late bloomers. For London,
ragweed is now the dominant pollen producer, along with dock,
nettle, mugwort and plantain.
Hay fever season is finally winding down with
ragweed on the decline. You can officially take a deep breath of
fresh air without the
or itchy eyes – and hopefully, the sun stays around to make the most
With any luck, the last of the weed pollen is on
its way out, although some ragweed as well as crab grass may hang
around until the first frost of winter in London.
Enjoy the changing leaf colours without your
eyes watering: November’s pollen count tends to be low.
December brings the first official day of
winter in London, which means traditionally low levels of pollen for
the next few months.
Top Causes of Pollen in London
Trees produce pollen in London from March until July. London’s most
common tree allergens are Elm, Birch, Walnut, and Poplar
trees1. Grass pollen is in the air from April until July as
well, followed by weed pollen. Ragweed pollen is the dominant strain
in London, beginning in August through September (or until cooler
temperatures take over.)
How to Stay Prepared for London’s Allergy Seasons
Have a pack of
Kleenex® Ultra On-the-Go 3-Ply Pocket Facial Tissues
ready for whenever seasonal allergies may arise.
Prevent pollen from reaching your eyes by wearing sunglasses when
- Wash your hands as often as possible to remove pollen.
To trap pollen, use petroleum jelly around your nostrils and your
When possible, wear a highly protective comfortable mask to filter
out allergens and pollen3.
Change your clothes and shower immediately upon returning home to
wash off and remove pollen.
Nasal breathing exercises have been shown to assist those using the
standard nasal sprays, as a natural solution4.
Pollen Hotspots in London
Any of London’s wide open green spaces will be as full of pollen as
they are of picnickers: Springbank Park, Victoria Park, and Gibbons
Park all pose significant allergen levels for those with hay fever.
Allergy Friendly Activities in London
The highest pollen count in London is typically in May. But tree,
grass and weed pollen are all high at different times, so avoiding
these green spaces on high pollen days is recommended if you have a
hay fever allergy. There are still plenty of hay fever-friendly
activities in this historic city:
Only in London
- University of Western Ontario
- East Park water park, arcade, rock climbing, and wave pool
- Labatt Brewery
- Budweiser Gardens
- Covent Garden Market
- Middlesex County Couthouse
London Children's Museum
Museum of Ontario
The Royal Canadian Regiment Museum
Museum of Archaeology