How many particulars are there in chicago to day?

The w h o recommended level is 25 micrograms per cubic meter. The e p a's recommended level is higher, 35. In the three cities where we are, i'm in new york, angeles, in philadelphia, levits and chicago, on average in two thousand 19. For instance, new york was the lowest of those three, at seven microgramsper cubic meter. Filly is at ten point three, and ch Chicago was the worst at 12 point eight.