Home
Weather Dublin
WeatherRadar
RainfallRadar
TemperatureRadar
WindRadar
LightningRadar
Weather News
Editor's Pick
Discover the app
Weather widget
Contact us
Apps
    Home / Editor's Pick /

    Pollen season: Climate change to increase length

13:00
22 September 2023

Pollen season
Climate change to increase length

Man sneezing

Here's a news update not to be sneezed at, climate change will lengthen and intensify pollen season, according to new research.

According to a study by the University of Michigan, if carbon dioxide emissions from vehicles, power plants, and other sources continue at the current rate, the world could experience a 200 percent increase in pollen this century.

The spring pollen season could also start up to a month earlier, and last longer into Autumn and Winter.

First, let's get the basics out of the way. Pollen is a dust-like substance, produced by grasses and plants, that contains the male genetic material that plants need for reproduction.

There are various sources of pollen, but the amount of each varies at different times of the year. Tree pollens, such as those from alder, birch, and oak trees, are most common in spring, kicking off allergy season. Around May, grass pollen becomes more of a problem, while later in the season, weed pollen becomes a problem.

A plant's growth affects how much pollen it produces. Global warming will boost plant growth in a lot of places, so pollen production will be influenced. It's not just about the temperature. Carbon dioxide emissions will also be a big driver of pollen increase.

Pollen season is now 20 days longer on average than it was in 1990, according to an analysis of 60 pollen-collecting stations across the U.S. and Canada. Seasonally, the quantity of pollen in the air is also increasing.

However, if you suffer from pollen allergies, Weather & Radar have you covered. You can check the latest pollen count for all of the major types of pollen in your area, with just a click.

Weather & Radar editorial team
More on the topic
Rising UV levels at the end the week. Mostly to the south. . . Wednesday 17 June 2026
Split graphic showing a UK temperature map with temperatures reaching 30°C near London on the left and a person applying sunscreen in bright sunshine on the right, with a UV warning symbol highlighting elevated ultraviolet levels.
Wednesday 17 June 2026

Mostly to the south

Rising UV levels at the end the week
Record-breaking June heatwave in Europe. Almost 40 degrees. . Weather Videos. Friday 19 June 2026
A Europe-wide temperature map showing widespread temperatures of 30 to over 40 degrees. Warning symbols indicate extreme heat across Central Europe, France and the Iberian Peninsula.
Weather VideosFriday 19 June 2026

Almost 40 degrees

Record-breaking June heatwave in Europe
Rainbows shine on unsettled week. Your weather - Your shots. . . Sunday 14 June 2026
Split image showing a pastel rainbow above a lighthouse and harbor wall on the left, and an offshore wind farm stretching across the sea beyond green coastal farmland on the right.
Sunday 14 June 2026

Your weather - Your shots

Rainbows shine on unsettled week
All weather news
This might also interest you
Mixed conditions on an unsettled week. Your weather - Your shots. . . Sunday 2 November 2025
plit image showing a double rainbow over a rocky shoreline on the left and sheep grazing in a green field under stormy clouds on the right.
Sunday 2 November 2025

Your weather - Your shots

Mixed conditions on an unsettled week
Turbulent weather in the Canary Islands. Storm and rain. . . Friday 12 December 2025
Weather graphic showing rain and wind fields over the Canary Islands and a central warning symbol.
Friday 12 December 2025

Storm and rain

Turbulent weather in the Canary Islands
Seasonal warmth between spring thunder. Your weather - Your shots. . . Sunday 19 April 2026
Split image showing coastal sunset with layered lenticular clouds over rooftops and palm trees on the left, and a green valley with river and hills under soft daylight on the right.
Sunday 19 April 2026

Your weather - Your shots

Seasonal warmth between spring thunder
All articles
Weather & Radar

Weather & Radar is also available on

Google Play StoreApp Store

Company

Contact us Privacy Policy Legal info Accessibility statement

Services

Uploader

Socials

facebooktwitteryouTubelinkList