Pollen Count in Norwich
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Norwich has high pollen counts in spring. Trees release pollen first, usually in March. Oak, ash, and hazel trees produce a lot of pollen. This makes eyes itch.
Updated: 5/13/2026
Grasses release pollen in late spring. May and June are peak months. Pollen counts are highest in warm, sunny weather. This makes noses runny.
Weeds release pollen in summer. Ragweed and nettle pollen cause problems. July and August are peak months. Pollen counts stay high.
In autumn, pollen counts decrease. Some trees still release pollen. September and October have lower pollen counts. This brings relief to people struggling.
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 Norwich 🌾. 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 | 2.1 | 0 | 0 | 0 | 0 | 0 |
| Mar | 98.3 | 23.8 | 0 | 0 | 0 | 0 |
| Apr | 21.1 | 711.8 | 3.3 | 0 | 0 | 0 |
| May | 0.4 | 111.1 | 87.9 | 0 | 0 | 0 |
| Jun | 0 | 0 | 1177.6 | 28.8 | 0.1 | 0 |
| Jul | 0 | 0.6 | 386.5 | 171.4 | 0 | 0 |
| Aug | 0 | 0 | 55.6 | 41.2 | 0 | 0 |
| Sep | 0 | 0 | 3.2 | 0.5 | 0 | 0.7 |
| Oct | 0 | 0 | 0 | 0 | 0 | 0 |
| Nov | 0 | 0 | 0 | 0 | 0 | 0 |
| Dec | 0 | 0 | 0 | 0 | 0 | 0 |
(52 km)