The Augur FAQ states it possible to use it as an oracle:
“Will other contracts be able to query Augur outcomes?
Yes, Augur is actually 2 products that can be used alone. One is a prediction market, the other is an oracle. The results from the oracle service are publicly available, and anyone can pay what will likely amount to several dollars to have an official statement regarding the objective truth about a subject.”
However, the Augur API documentation doesn't seem to provide any information on how to call it from an Ethereum smart contract.
Is it already possible to call Augur as an oracle from an Ethereum smart contract in Solidity? How can you do it?