The current difficulty is 1,835 PH. The next difficulty is estimated at 1,842 PH, a change of +0.40%. 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 211,715. The current block reward is 88,284 SC. Based on this and on the current difficulty, miners are being paid 46.6775 SC/PH, which corresponds to about 4.03 SC/day per GH/s.