Pollen Count in Heerlen
- Loading..
- Loading..
- Loading..
- Loading..
Morning Alerts ☀️. Start Your Day Prepared! 🌿 Sign up for daily morning high pollen count alerts.
Heerlen, a city in The Netherlands, experiences different pollen seasons. Tree pollen starts in March. Many trees release pollen then. It's a big problem for people.
Updated: 6/12/2026
Grass pollen season starts in May. It lasts until July. Grass pollen is a major issue. People stay indoors when pollen counts are high.
Weed pollen season begins in August. It continues until October. Weeds like ragweed and nettle release pollen. This makes people feel unwell.
Pollen seasons end in November. The weather gets colder then. Trees, grass, and weeds stop releasing pollen. The air gets cleaner for people.
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 Heerlen 🌾. 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 | 57.3 | 0 | 0 | 0 | 0 | 0 |
| Mar | 444.5 | 637.5 | 0 | 0 | 0 | 0 |
| Apr | 3.9 | 2849.9 | 20.9 | 0 | 0 | 0 |
| May | 0.7 | 105.1 | 175 | 0 | 0.7 | 0 |
| Jun | 0 | 0.2 | 1009.9 | 21.4 | 0.7 | 0 |
| Jul | 0 | 0.3 | 382.4 | 137.1 | 0 | 0 |
| Aug | 0 | 0 | 97.2 | 38.6 | 0 | 1.8 |
| Sep | 0 | 0 | 9.7 | 2.5 | 0 | 3.5 |
| Oct | 0 | 0 | 0.9 | 0.1 | 0 | 0 |
| Nov | 0 | 0 | 0 | 0 | 0 | 0 |
| Dec | 0 | 0 | 0 | 0 | 0 | 0 |
(6 km)
(13 km)