Vénissieux pollen forecast - today, tomorrow and the week ahead
Pollen Today
Today (20 September) pollen in Vénissieux is low; grass is low.
Pollen Tomorrow
Tomorrow (21 September 2026) grass no longer expected.
7-Day Trend
Over the next week grass will increase; cypress, willow, and mugwort will remain stable.
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Features and forecast availability vary by region.
Pollen Risk
Today - 20 September
| Pollen species | Level | Value |
|---|---|---|
| Alder (Alnus) | None | 0/100 |
| Birch (Betula) | None | 0/100 |
| Hazel (Corylus) | None | 0/100 |
| Cypress (Cupressaceae) | None | 0/100 |
| Grass (Poaceae) | Low | 15/100 |
| Willow (Salicaceae) | None | 0/100 |
| Mugwort (Artemisia) | None | 0/100 |
Tomorrow - 21 September
| Pollen species | Level | Value | 7-Day Trend |
|---|---|---|---|
| Alder (Alnus) | None | 0/100 | — |
| Birch (Betula) | None | 0/100 | — |
| Hazel (Corylus) | None | 0/100 | — |
| Cypress (Cupressaceae) | None | 0/100 | |
| Grass (Poaceae) | None | 0/100 | |
| Willow (Salicaceae) | None | 0/100 | |
| Mugwort (Artemisia) | None | 0/100 |
Local Environmental Conditions
Vénissieux' riverside green spaces and the Rhône River corridor feature oak, plane, and linden as the main tree pollen sources, with exposure varying between these areas and the more built-up industrial city centre. As part of the Lyon metropolitan area, local sources dominate, while the warm Rhône plain microclimate and surrounding Rhône-Alpes farmland contribute substantial grass and tree pollen throughout the season.
Vénissieux' season closely mirrors Lyon, benefiting from the warm Rhône plain microclimate. Hazel and alder open from January before birch peaks through April, with oak and plane following through May. Grass from surrounding Rhône-Alpes farmland peaks through June and July, while the Rhône valley concentrates pollen under calm conditions and the warm climate extends the season compared to surrounding upland areas.
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Frequently Asked Questions About Pollen in Auvergne-Rhône-Alpes
Is pollen high in Vénissieux right now?
On 20 September 2026, overall pollen levels in Vénissieux are low. Grass is the main contributor to airborne pollen
Will pollen levels change in Vénissieux tomorrow?
On 21 September 2026, pollen conditions in Vénissieux will be similar to today with no significant pollen expected.
Is pollen expected to decrease in Vénissieux this week?
According to the five-day outlook, grass pollen levels will increase later in the week.
Which pollen types are currently active in Vénissieux?
On 20 September 2026, Grass is the dominant pollen source in Vénissieux. artemisia, cypress, and willow are not currently active.
When is pollen season in Vénissieux?
How often is the Vénissieux pollen forecast updated?
The Vénissieux pollen forecast is updated four times daily. See the timestamp below for the most recent update.
Does pollen in Vénissieux 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 Vénissieux 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 Vénissieux, 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.
Understanding the Scale
The 0–100 scores represent risk levels, not direct measurements of pollen or air pollutant concentrations. Higher scores indicate higher risk. Pollen and air quality use different thresholds.
Pollen
| None | 0 | No or negligible risk of exposure. Pollen/mold exposure is expected to be minimal. |
| Low | 0-25 | Low risk of exposure. Small amounts of pollen or mold spores may be present. |
| Moderate | 25-50 | Moderate risk of exposure. Pollen/mold exposure is expected to be noticeable. |
| High | 50-75 | High risk of exposure. Elevated pollen/mold exposure is expected. |
| Very High | 75-100 | Very high risk of exposure. Pollen/mold exposure is expected to be at or near its highest levels. |
Get More in the Airmine Pollen app
Get 15-day pollen forecasts with morning, afternoon and evening detail, plus 5-day air quality forecasts. Explore interactive pollen risk maps, estimated pollen season start, route profiles and a symptoms diary.
Features and forecast availability vary by region. Currently covering Europe, the contiguous US, southern Canada, South Africa, Australia, Indonesia (Java & Bali), Brazil, Paraguay, Uruguay and the Buenos Aires area.
Developed with support from the European Space Agency (ESA) Business Applications and Space Solutions (BASS).
