You’re right, I should have been more specific- Mars’s atmosphere is very thin, on the order of 7 mbar at the surface compared to earth’s 1000 mbar (1 bar, ~ 1 atm). This varies slightly for location, for example there will be a higher density of gas in the local atmosphere if ice is sublimating to provide more molecules. This thin atmosphere is composed largely of carbon dioxide (~95%), with minor amounts of nitrogen (~3%), argon (~1%), oxygen (<1%), and others. Because there is very little oxygen, there is no real source for ozone (O3), which effectively shields us from solar UV radiation. Since Mars lacks this layer, harmful radiation penetrates to the surface where it can break up biological organics, disrupt DNA, etc. The low pressure and extreme temperatures also make it tricky for life on the surface (this is why the subsurface is really the only place that could harbor life- ice or liquid water could exist in the interstities between grains where pressure can be artificially high just due to surface forces, there is UV shielding from the ground above, and temperatures would be more constant).
So even though there is wind on Mars, it would be hard to feel since there are so few molecules really moving around.
And also, what Askance said. 
Sorry for the multiple double posts, but I wanted to mention that HiRISE has imaged Opportunity also:
Here Opportunity appears as a teeny silver dot on the rim of Victoria Crater.
Click on the link on this page to see a giant image (didn’t link it directly, pretty big) where the wheel tracks are clearly noticeable from where the rover rode around Victoria crater.
Personally, I think spacecraft imaging other spacecraft is one of the coolest things ever!
Let’s see you without that parachute on…
Ohh yeah…
The message beamed from earth, that turns you on? Hmm… good to see you’re up and running. Oh yeah… Let’s see that robotic arm… ITS SO BIG!
I’m getting my ass banned, arn’t I?
I had totally forgotten till they sent me an e-mail but my name is now on Mars thanks to Phoenix. It’s on the DVD. So are a bunch of other peoples but a little bit of me is there.
Of all the vehicles they could have picked to land on Mars, they chose a rickety improvised airplane cobbled together from the remains of a crashed C-119 “Flying Boxcar” designed by a weird guy with dyed blond hair?
As long as we don’t reach the day when there’s nothing else to see on Mars except NASA probes.
After we decide whether or not there’s a chance for life to have existed there all that will be worth seeing up there is stuff we put there.
Eventually (hopefully) a base of some sort. I’m not holding my breath.