Salt Lake's all-time sea-level pressure record based on data I obtained from Weather Underground appears to be 31.09 inches of mercury (1052.8 mb) (surface pressure is reduced to sea level for convenience when analyzing surface maps since surface pressure analyses look like topographic maps). Although we won't break that during the current high-pressure event, we peaked at 30.95 inches of mercury (1048.0 mb) on Saturday, which is quite high.
|Source: Utah Division of Air Quality|
Below is a time series of mean particulate concentrations back to the winter of 1973-74, which was provided to me by Dr. David Whiteman of the University of Utah. The
|Source: Dave Whiteman|
Now, just imagine what that graph would look like if we had stuck with "business as usual." Let's not go back to the 1970s.