Others have provided a link to the active fires map of B. C. That will give a good idea of where not to go. Be aware that as of a few days ago, they are beginning to shut down access to wilderness provincial parks. Wells Grey and Bowron Lakes parks for example are now closed.
If things don't change soon, they will also shut off all access to any backcountry areas. Even industrial access will be curtailed. This will of course put more pressure on the front-country areas.