Pollen Count in Preston
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Pollen seasons in Preston, UK happen at different times of the year.
Updated: 3/21/2026
Tree pollen season is usually in March and April. This is when trees like oak and birch release their pollen into the air. It's a time when some people feel unwell.
Grass pollen season is in June and July. This is when grasses like wheat and oats release their pollen. This type of pollen is the one that affects most people.
Weed pollen season is in August and September. This is when weeds like nettle and sorrel release their pollen. It's a time when the pollen count is usually lower than in spring and summer.
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 Preston 🌾. 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 | 1 | 0 | 0 | 0 | 0 | 0 |
| Mar | 79 | 23.1 | 0 | 0 | 0 | 0 |
| Apr | 25 | 648.4 | 3 | 0 | 0 | 0 |
| May | 0 | 54.9 | 70.3 | 0 | 0 | 0 |
| Jun | 0 | 0 | 659.5 | 12.9 | 0 | 0 |
| Jul | 0 | 0.1 | 297.2 | 97.8 | 0 | 0 |
| Aug | 0 | 0 | 70.8 | 31.3 | 0 | 0.1 |
| Sep | 0 | 0 | 3.4 | 0.3 | 0 | 0.4 |
| Oct | 0 | 0 | 0 | 0 | 0 | 0 |
| Nov | 0 | 0 | 0 | 0 | 0 | 0 |
| Dec | 0 | 0 | 0 | 0 | 0 | 0 |
(23 km)