Pollen Count in Penzance
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Penzance has high pollen counts from March to October. Tree pollen starts in March and April. Many trees release pollen during this time.
Updated: 3/2/2026
Grass pollen is a problem in May and June. Grasses release a lot of pollen into the air. This makes people feel unwell outside.
Weed pollen happens in late summer. Some weeds produce pollen in July, August, and September. Pollen counts can be high on warm, sunny days.
Pollen counts are usually lowest on rainy days. Rain helps wash pollen out of the air. People can stay outside when it's raining without feeling unwell.
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 Penzance 🌾. 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 | 1.4 | 0 | 0 | 0 | 0 | 0 |
| Mar | 47.4 | 20.9 | 0.1 | 0 | 0 | 0 |
| Apr | 46.6 | 354.8 | 4 | 0 | 0 | 0 |
| May | 0.3 | 33.7 | 43.2 | 0 | 0.6 | 0 |
| Jun | 0 | 0 | 106.5 | 0 | 0.1 | 0 |
| Jul | 0 | 0 | 67.5 | 2.2 | 0 | 0 |
| Aug | 0 | 0 | 17.1 | 0.8 | 0 | 0 |
| Sep | 0 | 0 | 1.6 | 0.1 | 0 | 0.1 |
| Oct | 0 | 0 | 0 | 0 | 0 | 0 |
| Nov | 0 | 0 | 0 | 0 | 0 | 0 |
| Dec | 0 | 0 | 0 | 0 | 0 | 0 |
(33 km)