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

    Levels could rise: Pollen could boom after rain

15:00
11 April 2023

Levels could rise
Pollen could boom after rain

rain on flowers

With rain falling you would be right to think that pollen levels are lower, but once the rain clears we may see a boom.

No matter the time of year, rainfall will dampen pollen easing the amount in the air. While levels will generally be lower, raindrops can kick up grass and weed pollen, just not to a significant amount.

Despite this, thunderstorms can also result in greater pollen density due to the humidity that accompanies them causing grains to burst.

Winds then lift the released pollen and carry it far away. As warmer and drier conditions return, grains and grass which have swelled over the past few weeks will begin to release their pollen.

So with strong winds in the forecast throughout Tuesday and Wednesday, in addition to thunderstorms in the wake of Tuesday's persistent rain, pollen will be something to watch out for.

You can stay on top of the pollen levels in your area at any time here in the Weather & Radar app with our dedicated pollen feature.

Weather & Radar editorial team
More on the topic
UV levels peak with the heat today. Latest heatwave. . . Wednesday, 29 July 2026
Split graphic showing a temperature map of England and eastern Ireland with temperatures reaching 33°C near London, 32°C in Norwich, and 29°C around Birmingham on the left, alongside a person applying sunscreen with a UV icon on the right.
Wednesday, 29 July 2026

Latest heatwave

UV levels peak with the heat today
Half of England now in drought. Joining North Wales. . . Wednesday, 29 July 2026
Dry section of the River Thames beneath a small stone bridge, with the riverbed exposed and cracked after prolonged, dry weather, while a person walks along the roadside above.
Wednesday, 29 July 2026

Joining North Wales

Half of England now in drought
Forest fires are getting out of control. Spain and France. . . Saturday, 25 July 2026
A split-screen image featuring a photograph and a weather map. On the left, thick, dark-grey smoke rises from several fire sites in a wooded coastal area; a calm stretch of water can be seen in the foreground. On the right, a weather map shows south-western France and northern Spain. A red arrow points from the Atlantic towards the French Atlantic coast, symbolising an onshore wind. Sunny weather is forecast for Bordeaux at around 20 degrees, and Bilbao is also expected to be sunny at around 27 degrees. A large warning sign with a flame symbol indicates an increased risk of forest fires.
Saturday, 25 July 2026

Spain and France

Forest fires are getting out of control
All weather news
This might also interest you
A frozen start to the weekend. Icy conditions. . . Friday, 13 February 2026
UK temperature map dated 14.02 showing widespread subzero values in blue shading, with readings such as −4 in Glasgow, −3 in Dublin, and −2 in London, alongside a blue thermometer icon.
Friday, 13 February 2026

Icy conditions

A frozen start to the weekend
Bright and warm conditions take hold. Spring-like outlook. . . Thursday, 23 April 2026
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
Long-term trends need a pinch of salt. 40 °C in July?. . . Tuesday, 30 June 2026
Temperature radar of 2022 heatwave where the all-time temperature record in the UK was set. Warning symbol overlain.
Tuesday, 30 June 2026

40 °C in July?

Long-term trends need a pinch of salt
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

facebooktwittertikToklinkList