Verb conjugation of "exacerbate" in English

Today we have what we call 'hair dryer wind' (south wind from over the Alps), and it is around 30 degrees in Aarau. In some places even 31. Many people have headaches because of the weather.
Somehow, my email was not sent. There were even a few mistakes, but really only minor things, nothing really bad. I've already read some other texts that you have sent and are getting better each time.
In winter it is a great place because you can ski. In the summer I like being in Paris because it is a very empty city in summer. The people head down to the coast, to Nice, Cannes and similar.