Where can i find out atmospheric pressure of my city?

Most weather web sites (i.e. www.weather.com) I believe report barometric pressure. However, the pressure they report may not be the exact city where you live but one nearby. But that shouldn't be a problem as barometric pressure does not noticably change from one city/town to another, uming there isn't a huge distance between the two cities. For instance you wouldn't expect the barometric pressure of say San Francisco to be indicative of the barometric pressure in say Las Vegas. However, the pressure in San Francisco should be pretty close to that in San Jose, CA which is about 40 miles away...give or take.