It's typical to have fields burning across Region 8 in November. On many afternoons, you can look on the horizon and see smoke. Today, I got a tweet that spawned this blog:
If you look below, we have a skew T for the time period of the pic. This diagram is showing you what the temperature (red line) and dewpoint (green line) is as you go vertically into the atmosphere. At about 2300', the temperature stops dropping, as it typically would, and starts rising! This is a temperature inversion and because of the inversion, the smoke stops rising. Remember, warm air rises. The smoke encountered air that was warmer than it was and it stopped rising.
Have a great day!