Nova Scotia highway webcams are operated by the Nova Scotia Department of Transportation and Infrastructure Renewal (TIR). Most are mounted on tall steel towers, most of which have weather sensors included on the tower. The sensors measure temperature, humidity, barometric pressure and wind direction and speed.
The webcam pic below is more or less real time and will update every 30 to 40 minutes, depending on conditions.
This highway webcam is on the northeast corner of the intersection of Highway 4 and John Munroe Road. It looks east down Highway 4. The camera is about 18 km. west on Highway 4 from Antigonish in eastern Nova Scotia.