i've been using airnow.gov to tell me the quality of the air and it seems OK around here (NYC)

i only notice how noxious the fumes are when we are in a car in the tunnel, the air filter just brings in that bad air into the car. while cycling, i notice it at times, but i've heard from others who ride thru chinatown that it is superbly bad.

this came out last month: The air in NYC lowers kids? IQs | New York Post

NYC air according to this Columbia study affects kids IQs but the sample size is super small 276 kids and they only looked at minority kids. the poorest kids are most affected. of course i'm more inclined to think it's b/c they are poor.