AI tells us what to do - when to get up, what to eat, how to live our lives on a daily basis. Humans are now 35% plastic.
Diet is vegan and mostly consists of soya, mung beans and bamboo sprouts with government-prescribed vitamin supplements plus whatever you can get to grow in the two raised beds in your back garden you're allowed to grow fruit and vegetables in. Insects are much rarer so you need to pollinate your own fruit and vegetables or choose a variety that doesn't need pollination. What "animal" protein there is has been created in a lab. Solar panels become a much more common way of generating power but are limited in number per person.
"Extreme" weather events happen every three to four months. You don't venture outside much unless you are completely covered up, whatever the weather. You get accustomed to floods, acid rain, random heavy snowfalls, and burning hot summers. Electrical equipment fails periodically and load-sharing is a common way of dealing with this. People live in temporary structures for many reasons - ease of getting away when disaster hits, ease of rebuilding, and the fact that bricks and mortar have become so expensive by then that only billionaires can afford to live in them. Also, half the coastline in Britain and elsewhere will have either fallen into the sea from erosion or been flooded by then.
The gap between rich and poor is so large that 1% of the population lives in lavish, gated palaces protected by armed guards while 99% of the population ekes a living from the land. The 1% don't think there is anything wrong with this arrangement. They have all the benefits of the work being done now into DNA and other research so when they have children they are perfect little mini-mes, prodigies from the start.
Entertainment remains very much as it is now.
Quite a few TV series and films that are probably pretty much on the mark when it comes to predicting the future - without some of the slightly wackier technology. (Though who would have thought just thirty years ago that an ordinary person would be able to carry the Internet around in the palm of their hand...). Travellers (Netflix); Firefly; Children of Men; The Hunger Games...I could go on all day, but what they all share is that, basically, things get much, much tougher for the majority.
Oh, yes, and also, people will talk about the 21st century as "the good old days".....when they're not calling us the Age of Consumption or the Age of Excess, that is...!