The current difficulty is 1,820 PH. The next difficulty is estimated at 1,822 PH, a change of +0.12%. The difficulty changes globally every time a new block is mined, based on how fast blocks are being found.
Hash Price Report
The last block was at height 225,942. The current block reward is 74,057 SC. Based on this and on the current difficulty, miners are being paid 39.4798 SC/PH, which corresponds to about 3.41 SC/day per GH/s.