Bad Air leads to school and soccer cancellations

No school tomorrow. No soccer on Saturday. Those make sense to me with the terrible air quality here. I just wonder how long they can keep the schools closed. It seems like even after the smoke goes away and the fires are out, whenever that may be, the air is going to be bad for days and days unless it rains. It's not likely to rain though, so the air quality should be bad for some time. I'd like to know how that decision is made by the school district because I suspect that students may end up back outside too early.