Pollen forecast by city › Basel
Pollen forecast for Basel today
Pollen levels in Basel today by trees, grasses and weeds, the forecast for the coming days, and when each plant’s pollen season usually starts and peaks.
Basel has one of Switzerland’s longest pollen records, with data going back to 1982, according to MeteoSwiss. The station represents the slightly lower and milder areas north of the Alps: in Basel the pollen season usually starts a few days earlier than at the other monitoring sites. North of the Alps, hazel pollen levels are high from early February in most years, with alder a few days later, and in Basel the period of high hazel and alder levels has become longer. Birch pollen levels are high from late March to early May, and grass pollen from early or mid-May to mid-July. Ragweed pollen, by contrast, is declining in Basel. Dates shift with the weather each year.
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 | Grasses0 · none | Weeds1 · very low | Mugwort1 · very low |
| Thu, 15 Oct | no data | ||||
| Fri, 16 Oct | no data | ||||
In bloom now
- Ragweed
Pollen season calendar for Basel
When pollen of each plant is usually in the air in Basel, 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 Jan – Feb | ||||||||||||
| Alderseason Jan – Apr, peak Feb – Mar | ||||||||||||
| Birchseason Feb – May, peak Mar – Apr | ||||||||||||
| Ashseason Mar – May, peak Mar – Apr | ||||||||||||
| Cottonwoodseason Mar – May, peak Apr – May | ||||||||||||
| Oakseason Mar – Jun, peak Apr – May | ||||||||||||
| Pineseason Apr – Jun, peak Apr – May | ||||||||||||
| Grassesseason Apr – Aug, peak May – Jul | ||||||||||||
| 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.
Get this forecast every morning
AllergoRadar sends a short daily summary for your exact location and keeps a symptom diary that shows which pollen your bad days follow. Free, no paid tier.
