The Qatar-based news organization launched its U.S. network at 3 p.m. Eastern time with a one-hour preview before settling into a regular schedule. It replaces Al Gore's Current TV in more than 45 million TV homes.
At the same time, the Al-Jazeera English network was suspended. It had been available since 2006 online and in a smattering of cable systems.
Al-Jazeera announced this new American channel in January, claiming an instant foothold with the purchase of Current TV and that network's cable distribution. Al-Jazeera America is also available from satellite providers DirecTV and Dish Network.
Al-Jazeera America is headquartered in New York and vows to provide unbiased, in-depth domestic and global news.
Al-Jazeera America is on Comcast channel 125.
MORE HBJ HEADLINES
Watchdog: Too few air traffic controllers where needed most A $32B tally, but Boeing's 787 costs don't bother Wall Street Czech airline to buy 16 Boeing 737 Max jets Lockheed Martin separating unit, combining it with Leidos Apple forecasts rare sales drop Obama administration loosens Cuba embargo with new measures