An automated weather observation system (AWOS) is now in service at Jeffco Airport, Denver. When the control tower closes at 10 p.m. local time, the ATIS frequency (126.25) becomes the AWOS frequency. At 6 a.m. local time when the control tower opens, the frequency reverts to ATIS. AWOS information is available by phone 24/7 at (720) 887-8067.