Hot weather is set to continue on Wednesday with temperatures reaching highs of 27°C.
The Met Office has issued a yellow thunderstorm warning for parts of central and southeast England as well as its first ever extreme heat warning.
An amber extreme heat warning has now also been issued for Northern Ireland from Wednesday morning through to midnight on Friday.
Read more: Tesco starts mandatory checks inside every shopper's car during hot weather
The yellow thunderstorm warning covers central and southeast England, which is set to get the brunt of some thundery downpours of rain as well as lightning. The warning will be in force from 1pm on Tuesday through to midnight.
No warnings are in place for the North East but we can expect very warm temperatures, a humid night and the odd heavy shower.
Here is the hour-by-hour forecast for Wednesday:
8am: 17°C / Cloudy / 10% chance of precipitation
9am: 17°C / Cloudy / 10% chance of precipitation
10am : 18°C / Sunny / 5% chance of precipitation
11am: 19°C / Sunny / 5% chance of precipitation
12pm: 20°C / Sunny / 5% chance of precipitation
1pm : 22°C / Sunny / 5% chance of precipitation
2pm: 23°C / Sunny / 5% chance of precipitation
3pm: 22°C / Sunny / 5% chance of precipitation
4pm: 22°C / Sunny / 5% chance of precipitation
5pm: 22°C / Sunny / 5% chance of precipitation
6pm: 22°C / Sunny / 5% chance of precipitation
7pm: 21°C / Sunny / 5% chance of precipitation
8pm : 20°C / Sunny / 5% chance of precipitation
9pm: 19°C / Sunny / 5% chance of precipitation
10pm: 18°C / Clear night / 5% chance of precipitation
11pm: 18°C / Clear night / 5% chance of precipitation
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