Janesville pollen forecast - today, tomorrow and the week ahead
Today (16 July) pollen in Janesville is low; grass is low. Tomorrow (17 July 2026) levels are similar. Over the following five days grass 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.
Janesville's Rock River setting in Wisconsin features oak, maple, and elm as the main tree pollen sources, with exposure varying between the greener residential neighborhoods along the Rock River and the more built-up commercial corridors. The Rock River corridor is a particularly significant local source, while the surrounding Wisconsin farmland extends substantial grass pollen across the city and the river valley channels airflows throughout.
Today - 16 July
-
Alder (Alnus):
None
0/100
-
Birch (Betula):
None
0/100
-
Hazel (Corylus):
None
0/100
-
Cypress (Cupressaceae):
None
0/100
-
Grass (Poaceae):
Low
16/100
-
Oak (Quercus):
None
0/100
-
Willow (Salicaceae):
None
0/100
-
Mugwort (Artemisia):
None
0/100
-
Ragweed (Ambrosia):
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 - 17 July
-
Alder (Alnus):
None
0/100
-
Birch (Betula):
None
0/100
-
Hazel (Corylus):
None
0/100
-
Cypress (Cupressaceae):
None
0/100
-
Grass (Poaceae):
Low
12/100
-
Oak (Quercus):
None
0/100
-
Willow (Salicaceae):
None
0/100
-
Mugwort (Artemisia):
None
0/100
-
Ragweed (Ambrosia):
None
0/100
Air quality in Janesville
View air qualityFrequently Asked Questions
Is pollen high in Janesville right now?
On 16 July 2026, overall pollen levels in Janesville are low. Grass is the main contributor to airborne pollen
Will pollen levels change in Janesville tomorrow?
On 17 July 2026, pollen conditions in Janesville will be similar to today, with grass at low levels
Is pollen expected to decrease in Janesville this week?
According to the five-day outlook, grass and ambrosia pollen levels will increase later in the week.
Which pollen types are currently active in Janesville?
On 16 July 2026, Grass is the dominant pollen source in Janesville. oak, willow, alder, ambrosia, artemisia, birch, and cypress are not currently active.
When is pollen season in Janesville?
How often is the Janesville pollen forecast updated?
The Janesville pollen forecast is updated four times daily. See the timestamp below for the most recent update.
Does pollen in Janesville 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 Janesville 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 Janesville, 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 United States?
Check pollen in other popular cities:
Data provided by Airmine — Last update: 16 July 2026 at 10:33 CEST (Data is updated four times daily.)
This page provides the latest public pollen forecast for Janesville.
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.