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
Temperature map of the UK and western Europe showing intense red and orange heat across southern Britain, with temperatures reaching 31°C near London and a large thermometer icon beside the map.
Friday 22 May 2026

Highs over 30 degrees

Unusually warm for the long weekend
Temperature Radar forecast for Friday in Europe. Very high temperatures across Spain and Eastern Europe, slightly cooler in the north and west.
Tuesday 19 May 2026

Over 30 degrees in places

Early summer gets underway in Europe
Split graphic showing a warm temperature map of the UK on the left with temperatures reaching 30°C near London, and a person applying sunscreen in bright sunshine on the right beside a thermometer icon.
Thursday 21 May 2026

Combating UV

Staying sun safe as heat rises
All weather news
This might also interest you
Split UK map showing warm temperatures up to 21 degrees in orange on the left and clear sunny conditions with temperatures from 12 to 18 degrees on the right, with sun icons across the country.
Thursday 23 April 2026

Spring-like outlook

Bright and warm conditions take hold
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
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
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