Pollen forecast by city › Cologne
Pollen forecast for Cologne today
Pollen levels in Cologne today by trees, grasses and weeds, the forecast for the coming days, and when each plant’s pollen season usually starts and peaks.
Cologne has mild winters, with a January average of about 3 °C, and in warm winters, according to Germany’s environment ministry, the first hazel pollen sometimes flies as early as December. In the regional pollen calendar of the German Pollen Information Service for western Germany, hazel reaches its main flowering in late January and alder in February. Ash follows from late March to mid-April, birch in April, and oak until early May. Grass pollen dominates from late May to early July, then mugwort until late August and ragweed into September. The German Weather Service covers Cologne in its Rhenish-Westphalian Lowland forecast region. Dates vary with the weather.
Pollen today
- Trees0 · none
- Grasses1 · very low
- Weeds1 · very low
- Mugwort1 · very low
Data updated Mon, 12 Oct, 04:25, local time.
Pollen forecast for the next days
| Day | Overall | Trees | Grasses | Weeds | Mugwort |
|---|---|---|---|---|---|
| Tomorrow, Tue, 13 Oct | Overall1 · very low | Trees0 · none | Grasses1 · very low | Weeds1 · very low | Mugwort1 · very low |
| Wed, 14 Oct | Overall1 · very low | Trees0 · none | Grasses1 · very low | Weeds1 · very low | Mugwort1 · very low |
| Thu, 15 Oct | no data | ||||
| Fri, 16 Oct | no data | ||||
In bloom now
- Ragweed
Pollen season calendar for Cologne
When pollen of each plant is usually in the air in Cologne, month by month. The calendar is an estimate for a typical year; the actual start shifts with the weather by a week or two.
| Plant | January | February | March | April | May | June | July | August | September | October | November | December |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Hazelseason Jan – Mar, peak Feb – Mar | ||||||||||||
| Alderseason Feb – Apr, peak Mar – Apr | ||||||||||||
| Birchseason Mar – May, peak Apr – May | ||||||||||||
| Ashseason Mar – May, peak Apr – May | ||||||||||||
| Cottonwoodseason Apr – Jun, peak Apr – May | ||||||||||||
| Oakseason Apr – Jun, peak May | ||||||||||||
| Pineseason Apr – Jun, peak May – Jun | ||||||||||||
| Grassesseason May – Sep, peak Jun – Aug | ||||||||||||
| Mugwortseason Jul – Oct, peak Aug – Sep | ||||||||||||
| Ragweedseason Aug – Oct, peak Sep – Oct |
On high-pollen days
- Pollen levels are usually highest on warm, dry and windy days; rain washes pollen out of the air for a while.
- Keep windows closed when the level is high and air rooms after rain.
- After a long time outdoors, change clothes and wash your hair; dry laundry indoors.
- Sunglasses help keep pollen out of your eyes.
- If you have allergy symptoms, talk to a doctor — this page does not replace medical advice.
About the data
Current levels and the forecast come from the Google Pollen API. It is a model forecast on the Universal Pollen Index (0–5), not a measurement from a local pollen trap. The season calendar is AllergoRadar’s estimate based on model data and published pollen calendars. Reference information only, not medical advice.
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