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 /

    Why the air feels sticky and humid

06:00
1 August 2024

Understanding dew point
Why the air feels sticky and humid

Widely high dew point temperatures of 18°C - 20°C expected.

Dew points are reaching sticky territories, making it feel humid right now. Here's why and how to also check out this feature inside the app!

The dew point temperature is defined as the temperature to which it must be cooled to, to become saturated.

Difference in dew point and relative humidity?

When the air is saturated this means the relative humidity is at 100% and the air cannot hold any more water vapour, so is condensed out into liquid form. It is simply a measure of how much moisture is in the air at any given point.

Both dew point temperature and relative humidity measure the moisture content in the atmosphere.

The difference however, is that relative humidity is temperature driven, giving you a relative measure of how saturated the air is, while dew point is an absolute measure of the moisture content.

A higher dew point means more moisture

In the coming days, the air temperature will be reaching the mid to high twenties, around 26°C to 28°C. The dew points, will be reaching 18°C to 20°C, leaving a relative humidity of around 50-70%.

Info inside the app

You can find all this detail inside the app, by clicking the hourly increments in the 'today' section and also the 'afternoon', 'evening', 'night' and 'morning' blocks in the forecast section lower down the page.

Tapping these areas will show an addition box of information below, including the humidity and dew point.

A 'feels like' temperature is also available, calculated by taking into account the air temperature, relative humidity and wind speed. Wind speed is more relevant in winter, as it makes it feel colder with a stronger wind chill.

Understanding the TemperatureRadarread more
More on the topic
Seeking the cooler scenes. Your weather - Your shots. . . Sunday, 12 July 2026
Split image showing a cat silhouetted on a fence at golden hour with the low sun behind it on the left, and a calm marina with boats, reflective water, and thin high clouds under bright sunshine on the right.
Sunday, 12 July 2026

Your weather - Your shots

Seeking the cooler scenes
Very high UV levels during the heatwave. Sun cream at the ready!. . . Wednesday, 8 July 2026
Split graphic showing a UK temperature map with hot conditions across England and Wales, temperatures reaching 32 °C near London, and a UV warning icon on the left, alongside a person applying sunscreen in bright sunshine on the right.
Wednesday, 8 July 2026

Sun cream at the ready!

Very high UV levels during the heatwave
Forest fires rage in southern Europe. Drought and wind. . . Monday, 6 July 2026
Split screen. On the left, a weather map of France and Spain showing the plumes of smoke from the forest fires. On the right, a fire-fighting aircraft in action.
Monday, 6 July 2026

Drought and wind

Forest fires rage in southern Europe
All weather news
This might also interest you
Storm Chandra makes impact. Severe gales & heavy rain. . . Tuesday, 27 January 2026
Split image showing strong winds over the UK on a forecast map and widespread rain and snow on a weather radar map.
Tuesday, 27 January 2026

Severe gales & heavy rain

Storm Chandra makes impact
New records for England and Wales. Broken again tomorrow?. . . Thursday, 25 June 2026
Temperature map of southwest Britain on 25.06 showing extreme heat across southern Wales and southwest England, with Bute Park in Cardiff highlighted at 34.2°C and Yeovilton at 36.4°C amid widespread deep red heat zones.
Thursday, 25 June 2026

Broken again tomorrow?

New records for England and Wales
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
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