A bit chilly in the morning as usual but that'd because I leave the house at 5:30 AM. On my way back, it was good. The sun was out but it wasn't too hot.

EDIT:
I'm gonna ask a silly question here since I don't really want to make a thread about it. I got my bike for almost a month now and have a little over 50 miles on it. This morning I notice that I was pedaling a lot harder than before, then I was looking out my tires as I was on the bike I noticed that the back wheel tire wasn't as tight or firm as the front. I checked it out and it was a lot looser than the front tire so I assume it lost a bit of air.

I tried pumping as much air as I could with my cheap hand pump that I found in the house, it was from the previous owner. I couldn't get it as tight as the front tire because every time I tried to release the pump from the valve, air starts to let loose.

What should I do? I'm totally new at this so I'm not sure if I should get a better air pump where the air doesn't escape if I release it from the valve or change the tube and tire all together. It is still ridable for now.