Wind is simulated, you can play with the effect driving offline. But as far as I know, it doesnt apply online for some reasons.
There are hundreds of "top priority" physics simulation aspects waiting for their time, but the reason for them not being done (yet) is not only because it takes huge coding and writing work that the small S397 crew cannot do any time soon, but also because the average consumer PC cannot take the simulation.
Already with the advanced tyre physics, little bit of weather and little bit of realroad, the engine and sometimes netcode cant keep up. The devs cannot risk piling on raw features when a big part of the users still experience problems with the current version.
What can we do? Buy the sim, tell your friends to buy it, drive it, promote it, praise it, report problems, write suggestions. If you have any competence in developing and coding, contact S397.
If the simracing scene remains fragmented, with several companies working on their own thing and official competitions with actual money spread out in different directions, it might take us over a decade to reach that level with small steps. The current companies are only strong enough to take small steps and pump in content to keep the minimal business plans going.