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
Split image showing dark rooftop chimneys silhouetted against a vivid orange-red sunset on the left, and large white cumulus clouds rising over trees under a blue sky on the right.
Sunday 16 November 2025

Your weather - Your shots

Views from an unsettled week
Weather map of the UK and Ireland showing orange-red wind zones with gusts up to 40 mph near Dublin and Glasgow, overlaid with a triangular wind warning symbol on the left.
Friday 14 November 2025

Turbulent Saturday

Gusting start to the weekend
Weather map with heavy rain warning over Southern California, warning symbol in the centre.
Saturday 15 November 2025

Severe weather conditions

Heavy rainfall in California
All weather news
This might also interest you
Mammatus clouds
Thursday 21 August 2025

Unusual view

Mammatus clouds over Ireland
Friday 22 August 2025

Breakfast brief

Sunny start for some, overcast later
Sunday 17 August 2025

Your weather - Your shots

Summer shots from a warm week
All articles
Weather & Radar

Weather & Radar

Google Play StoreApp Store

Company

Contact us Privacy Policy Legal info Accessibility statement

Services

Uploader

Socials

facebooktwitteryouTubelinkList