Looking at your photos, it seems to me Quite Dirty, since this is the EXIT side! (second photo). The visible dark tint means that the very fine smake particles DID PASS through the filter. As a matter of fact, 99% or air filters are a compromised "solution", as there are difficult penalties (limitations) in respect to the available space inside present day cars. The fact that with a half-used filter the engine does not receive the same quantity of air at full throttle (can be measured easily as Pressure Drop across the filter) means that most "modern" vehicles would benefit from significantly larger filters, so that enough area is realized, keeping pressure drop reasonable and using a finer pore "paper", so that more small particles are catched. But as those are now, the paper does NOT stop the very fine sizes of dust. The original factory air filter element in my Dodge Stratus R/T TURBO has a flow capability (printed on the plastic lid) of only about half the engine air demand at full throttle and full Boost... Go figure!
I live in Mexico City, and since 1997 we are seeing an augmented activity at the local volcano (Popocatepetl), that is located about 44 miles from Mexico City, and when the winds are from the east, we receive sizable quantities of "ash"... that in reality is nothing more than finely ground rock: a very hard and abrasive dust. That is the reason I stopped using a K&N oiled cotton gauze filter in one of my cars, as I found that those filters tend to develop numerous small "pinholes" after a few washing-reoiling cycles (can only be seen by putting a strong light behing the material). But even with a paper filter, we see that a lot of fines get into the engine when the wind carries the exhalations in our direction.
Therefore, I tend to change the oil at reduced intervals (2000 miles), even on synthetic; and perform a washing of the oil system by using either 'Wynn's Oil System Cleaner' or 'Engine Flush', to keep my engines as clean as possible given our circumstances. Amclaussen.