The Met Office has issued an amber extreme heat warning for Sunday, 17 July, as temperatures soar throughout the week.

The Met Office has predicted ‘exceptionally high temperatures’ on Sunday, which may lead to widespread impacts on people and infrastructure.

Population-wide adverse health effects are likely, not limited to those most vulnerable to extreme heat, leading to potentially serious illness or danger to life.

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The government has advised residents that 999 services should be used in emergencies only, with people urged to seek advice from 111 if they need non-emergency health advice.

The Met Office said ‘substantial changes’ in working practices and daily routines are likely required.

More people are likely to visit coastal areas, lakes and rivers, leading to an increased risk of water safety incidents.

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Delays on roads and road closures are possible, with delays and cancellations to rail and air travel and a potential for significant welfare issues for those who experience even moderate delays.

The day-by-day weather forecast is as follows:

• Monday, July 11

Afternoon – Cloudy, but the temperature will remain in the mid-20s (highest is 26 degrees), with little wind and a high pollen count.

Evening – It will remain cloudy, and the temperature will drop to the low 20s, staying hot with very few breezes.

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• Tuesday, July 12

Morning – Preston will be cloudy, but the temperatures will stay in the low 20s overnight and remain there throughout the day.

Afternoon – The weather will remain the same, but the humidity will rise into the high 60s, with little wind.

Evening – The temperature will drop slightly, but the humidity will rise to an uncomfortable 84 per cent by 9pm.

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• Wednesday, July 13

Morning – A slightly cooler morning, with clouds and the temperature at 18 degrees by 10am.

Afternoon – Sunny, with the temperature remaining at 18 degrees and humidity declining, but the pollen count will be high.

Evening – A cooler evening, topping out at 14 degrees.

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• Thursday, July 14

Morning – A cooler 14 degrees overnight, but the humidity will be in the high 80s.

Afternoon – The temperature will rise to 18 degrees, with patches of sun and lower humidity.

Evening – Temperatures will drop to 13 degrees, but the humidity will again rise to the high 80s.

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• Friday, July 15

Morning – Cooler overnight, but humidity levels will reach 89 per cent.

Afternoon – A small chance of rain, with temperatures topping out at 18 degrees.

Evening – Cloudy, with patches of sun and temperatures remaining the same.

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• Saturday, July 16

Morning – Fairly cool overnight, with temperatures reaching 13 degrees, but the humidity will reach 90 per cent, remaining similar throughout the morning.

Afternoon – Hot, with temperatures reaching 24 degrees and some gentle breezes.

Evening – The temperature will fall to 20 degrees.

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• Sunday, July 17 (amber extreme heat warning)

Morning – Hot throughout the night at 18 degrees until it rises by 10am.

Afternoon – Hot but cloudy, with temperatures climbing to 27 degrees.

Evening – It will remain hot until 10pm, with temperatures in the low 20s.

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How are you coping with the heatwave? Let us know in the comments below.