Tracked live by the FAA, but its flight plan was first seen after takeoff, so we don't know the scheduled time and can't say whether it's late.

ENVOY · FLIGHT MQ 4175 LANDED 5:01 PM MT, ~4 MIN LATE · SCHEDULED TIME UNKNOWN

MQ 4175 · PHX → BOI

took off 2:22 PM MT · landed 5:01 PM MT (scheduled time unknown)
Forecast issued Tue 10:00 PM ET · 4h after departure

Odds over time

Arrive at BOI more than 15 minutes late?
26% chance · ±0 pts −1 pt · 24h
HOW SURE WE ARE Very high. The odds now come almost entirely from live conditions.
WEATHER FORECASTS LIVE IN THE AIR 0% 15% 30% 45% 60% 1.1d 12h 6h Departs Lands