Pollen Count in Colchester
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Tree pollen season in Colchester starts in March. Trees release pollen into the air. It's a sign of spring. Pollen counts are usually high in April.
Updated: 3/23/2026
Grass pollen season begins in May. Grass pollen is a major problem for people. Pollen counts are high in June. This is the peak month.
Weed pollen season starts in July. Weeds release pollen into the air. Pollen counts are lower than in spring. August is still a bit problematic.
September sees a decrease in pollen. Trees start to prepare for winter. Pollen counts are much lower now. It's a relief after a long pollen season.
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 Colchester 🌾. 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 | 0.2 | 0 | 0 | 0 | 0 | 0 |
| Feb | 10.6 | 0 | 0 | 0 | 0 | 0 |
| Mar | 23.5 | 109.7 | 0 | 0 | 0 | 0 |
| Apr | 0.4 | 391.9 | 2.5 | 0 | 0.3 | 0 |
| May | 0 | 8.1 | 67.5 | 0 | 2.4 | 0 |
| Jun | 0 | 0.2 | 958.8 | 31.4 | 0 | 0 |
| Jul | 0 | 0 | 313.9 | 139 | 0 | 0 |
| Aug | 0 | 0 | 57.2 | 29.4 | 0 | 0.3 |
| Sep | 0 | 0 | 3.1 | 0.6 | 0 | 7.6 |
| Oct | 0 | 0 | 0 | 0 | 0 | 0 |
| Nov | 0 | 0 | 0 | 0 | 0 | 0 |
| Dec | 0 | 0 | 0 | 0 | 0 | 0 |
(24 km)