BlockExplorer   Ⓑ Ⓘ Ⓣ Ⓒ Ⓞ Ⓘ Ⓝ   netHash Report

BlockExplorer.com no longer provides the nethash report.
Blockchair.com has an API that provides hashrate data: https://blockchair.com/api/docs
Search for keyword hashrate_24h