The Met Office said very light winds and high pressure have led to high pollution levels in parts of the UK today.
The dust blown over from the Sahara at the weekend is "lingering" as the lack of wind means there is "nowhere for it to go," a spokeswoman said.
However, a change in weather tomorrow means the air quality should be very good by Friday, she added.
The extreme rainfall seen across the south of the country is due in part to climate change the Met Office has said.
Warmer air carries more moisture meaning heavier rain and increasing temperatures in the north Atlantic have meant more rain for the UK.
Jeff Knight from the Met Office says: "Climate change to date has probably contributed to the some degree, in the extreme rainfall we have seen this winter.
"However that does not necessarily mean we will regularly experience weather like this in the future."
Warnings for high winds and severe rain have been issued tonight for the south west, the south of England and most of Wales.
The Met Office has warned those in the areas highlighted to be prepared for disruption caused by the extreme weather tonight and into the weekend.
For more information see the Met Office website.
The Met Office have shared a picture showing more bad weather on the way for the UK and especially the south west, which has already suffered substantial flooding.
The Met Office has tweeted that it plans to share some facts on the weather in Sochi, compared to that in the UK, to mark the first day of the Winter Olympics.
The Isles of Scilly experienced the strongest wind last night as recorded by the Met Office between 3pm on Tuesday and 8am today:
- St Mary's Airport, Isles of Scilly - 92mph
- Berry Head, Devon - 91mph
- Culdrose, Cornwall - 76mph
- Needles Old Battery, Isle of Wight - 71mph
- Plymouth, Devon - 71mph
The Met Office has an amber alert for high winds across the entire south coast of England as well as the South West and southern Wales.
Amber warning for winds gusting 50-70 mph in force across southern England and Wales: http://t.co/IHg2saECeL
Amber "be prepared" warnings have been issued by the Met Office for three areas in the UK.
Wales, the South West, London and the South East, are all at a high risk of extreme wether, and residents are urged to be prepared for high winds.
Western and southern parts of the UK will be battered by more rain and wind over the weekend, the Met Office has warned.
A rain alert has been issued for much of the south coast of England, parts of Wales and Northern Ireland for the next two days.
The Met Office has a heavy rain warning in force for South East, South West and southern half of Wales.
With rivers levels high and the ground saturated in many areas, there is a continued risk of flooding in these areas.