Calw pollen forecast - today, tomorrow and the week ahead
Today (20 July) pollen in Calw is low; grass is low. Tomorrow (21 July 2026) levels are similar - grass remains low, cypress at low levels, mugwort at low levels. Over the following five days cypress, grass, and mugwort will increase. Forecasts are calculated by Airmine using satellites to map local vegetation and determine pollen season onset.
For long term forecasts and maps, see the Airmine app
Developed with support from the European Space Agency (ESA)’s Business Applications and Space Solutions (BASS) team
Use our Strava plugin to check your own exposure.
In Calw, maple, chestnut, and linden dominate the parks and street trees as primary pollen sources, with levels differing between green space and the built-up core. Swabian farmland together with mixed orchard woodland nearby boosts local tree and grass pollen levels, while the river valley setting channels airflows through the town.
Today - 20 July
-
Alder (Alnus):
None
0/100
-
Birch (Betula):
None
0/100
-
Hazel (Corylus):
None
0/100
-
Cypress (Cupressaceae):
None
0/100
-
Grass (Poaceae):
Low
17/100
-
Willow (Salicaceae):
None
0/100
-
Mugwort (Artemisia):
None
0/100
High pollen levels may trigger sneezing, itchy eyes, and congestion. Airmine's neighbourhood estimates use satellites to map local vegetation and a statistical prediction model, updated four times daily.
Tomorrow - 21 July
-
Alder (Alnus):
None
0/100
-
Birch (Betula):
None
0/100
-
Hazel (Corylus):
None
0/100
-
Cypress (Cupressaceae):
Low
1/100
-
Grass (Poaceae):
Low
24/100
-
Willow (Salicaceae):
None
0/100
-
Mugwort (Artemisia):
Low
1/100
Air quality in Calw
View air qualityFrequently Asked Questions
Is pollen high in Calw right now?
On 20 July 2026, overall pollen levels in Calw are low. Grass is the main contributor to airborne pollen
Will pollen levels change in Calw tomorrow?
On 21 July 2026, pollen conditions in Calw will be different from today, with artemisia at low levels, cypress at low levels, grass at low levels
Is pollen expected to decrease in Calw this week?
According to the five-day outlook, artemisia, cypress, and grass pollen levels will increase later in the week.
Which pollen types are currently active in Calw?
On 20 July 2026, Grass is the dominant pollen source in Calw. willow, alder, artemisia, birch, hazel, and cypress are not currently active.
When is pollen season in Calw?
How often is the Calw pollen forecast updated?
The Calw pollen forecast is updated four times daily. See the timestamp below for the most recent update.
Does pollen in Calw come from nearby or far away?
Studies show that most pollen exposure (often 70–90%) comes from nearby sources, such as local trees and vegetation. A good pollen forecast therefore depends on accurately representing local vegetation. Pollen can travel long distances, but this usually matters only early in the season or during specific wind events.
Are pollen levels in Calw based on measurements or forecasts?
Pollen data is often misunderstood. Most "pollen levels" are not real-time measurements, but forecasts.
Direct pollen measurements are typically delayed by 1-2 days because they require manual analysis. To show current conditions in Calw, modern forecasts combine recent measurements, weather data, and information about local vegetation.
This allows us to estimate pollen levels for today and the coming days, not just report the past.
Airmine’s atmospheric monitoring platform was developed with support from the European Space Agency (ESA)’s Business Applications and Space Solutions (BASS) team, using satellite and Earth observation technologies to improve emissions monitoring.
Want to see pollen forecasts for other cities in Germany?
Check pollen in other popular cities:
Data provided by Airmine — Last update: 20 July 2026 at 16:32 CEST (Data is updated four times daily.)
This page provides the latest public pollen forecast for Calw.
For long term forecasts and maps, see the Airmine app
Unless explicitly made clear, the content on this site has not been paid for by external organisations and is Airmine's sole responsibility.