Pollen Count in Keynsham
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Tree pollen season in Keynsham starts in March. Trees release pollen into the air. It's a sign of spring. Trees like oak, ash, and hazel produce a lot of pollen.
Updated: 4/26/2026
Grass pollen season starts in May. Grass pollen is a major problem for people. It's in the air for a few months. Warm and sunny days make it worse.
Weed pollen season starts in August. Weeds like ragweed and nettle produce pollen. This season can last until October. It depends on the weather.
Pollen counts are usually high in the morning. They go down at night. Rain helps wash pollen out of the air. Sunny days make pollen counts go up again.
Pollen Forecast Chart
Recommendations
When pollen concentrations reach a peak, we suggest these simple steps to help with hay fever. These tips are extra important on windy days when plants are in peak anthesis (the time when they release the most pollen).
- Wear masks if necessary
- Shower after going out
- Wear sunglasses if windy
- Close windows and doors
- Use an indoor air purifier
- Avoid wearing woolen clothes outside
- Limit outdoor activities
Annual Pollen Overview
Check out this month-by-month overview of the daily average pollen count in Keynsham 🌾. This data is based on previous years and serves as a guideline to help you understand when different pollen seasons typically occur in your city.
| Alder | Birch | Grass | Mugwort | Olive | Ragweed | |
|---|---|---|---|---|---|---|
| Jan | 0 | 0 | 0 | 0 | 0 | 0 |
| Feb | 2.2 | 0 | 0 | 0 | 0 | 0 |
| Mar | 180.9 | 38.3 | 0 | 0 | 0 | 0 |
| Apr | 183.9 | 1186.6 | 3 | 0 | 0 | 0 |
| May | 0.3 | 48 | 78.9 | 0 | 0.3 | 0 |
| Jun | 0 | 0 | 868.4 | 15.9 | 0.1 | 0 |
| Jul | 0 | 0.1 | 519.3 | 172.8 | 0 | 0 |
| Aug | 0 | 0 | 60.8 | 33.1 | 0 | 0.1 |
| Sep | 0 | 0 | 1.4 | 0.2 | 0 | 0.9 |
| Oct | 0 | 0 | 0 | 0 | 0 | 0 |
| Nov | 0 | 0 | 0 | 0 | 0 | 0 |
| Dec | 0 | 0 | 0 | 0 | 0 | 0 |
(8 km)