Air Density Online

Rockford Speedway in Rockford, Illinois
Historical weather information* for Thursday, January 21 2021

Powered by Darksky.net. Dates available from 2016-present. Please note that some dates might have incomplete data.


Get current weather for Rockford Speedway.
Track elevation: 751 ft.

General conditions: Clear throughout the day.

  • Time
  • Temp
  • Hum
  • Uncorrected Barometer
  • Dew Point
  • Grains
  • Wind
  • Air Density
  • Density Altitude
  • Jan 21 12:00 am
  • 31 deg F
  • 77%
  • 28.93 Hg
  • 25 deg F
  • 20.2
  • SW 13 mph
  • 101.93 %
  • -655 ft.
  • Jan 21 1:00 am
  • 31 deg F
  • 75%
  • 28.93 Hg
  • 25 deg F
  • 19.6
  • SW 12 mph
  • 101.93 %
  • -656 ft.
  • Jan 21 2:00 am
  • 30 deg F
  • 74%
  • 28.95 Hg
  • 23 deg F
  • 18.6
  • SW 12 mph
  • 102.23 %
  • -759 ft.
  • Jan 21 3:00 am
  • 29 deg F
  • 74%
  • 28.95 Hg
  • 23 deg F
  • 17.8
  • SW 10 mph
  • 102.46 %
  • -835 ft.
  • Jan 21 4:00 am
  • 28 deg F
  • 74%
  • 28.95 Hg
  • 22 deg F
  • 17.1
  • SW 10 mph
  • 102.71 %
  • -918 ft.
  • Jan 21 5:00 am
  • 27 deg F
  • 74%
  • 28.96 Hg
  • 21 deg F
  • 16.4
  • W 10 mph
  • 102.96 %
  • -1001 ft.
  • Jan 21 6:00 am
  • 28 deg F
  • 72%
  • 28.95 Hg
  • 21 deg F
  • 16.7
  • SW 9 mph
  • 102.71 %
  • -918 ft.
  • Jan 21 7:00 am
  • 28 deg F
  • 73%
  • 28.96 Hg
  • 22 deg F
  • 16.9
  • SW 10 mph
  • 102.74 %
  • -930 ft.
  • Jan 21 8:00 am
  • 28 deg F
  • 73%
  • 28.96 Hg
  • 22 deg F
  • 16.9
  • SW 10 mph
  • 102.73 %
  • -927 ft.
  • Jan 21 9:00 am
  • 29 deg F
  • 72%
  • 28.98 Hg
  • 22 deg F
  • 17.3
  • SW 11 mph
  • 102.58 %
  • -876 ft.
  • Jan 21 10:00 am
  • 31 deg F
  • 70%
  • 28.97 Hg
  • 23 deg F
  • 18.3
  • W 14 mph
  • 102.10 %
  • -714 ft.
  • Jan 21 11:00 am
  • 33 deg F
  • 72%
  • 28.96 Hg
  • 26 deg F
  • 20.4
  • W 15 mph
  • 101.61 %
  • -548 ft.
  • Jan 21 12:00 pm
  • 35 deg F
  • 72%
  • 28.95 Hg
  • 27 deg F
  • 22.1
  • W 16 mph
  • 101.14 %
  • -388 ft.
  • Jan 21 1:00 pm
  • 35 deg F
  • 73%
  • 28.96 Hg
  • 28 deg F
  • 22.4
  • SW 16 mph
  • 101.15 %
  • -393 ft.
  • Jan 21 2:00 pm
  • 36 deg F
  • 75%
  • 28.97 Hg
  • 29 deg F
  • 24.0
  • NW 16 mph
  • 100.95 %
  • -325 ft.
  • Jan 21 3:00 pm
  • 36 deg F
  • 79%
  • 28.99 Hg
  • 30 deg F
  • 25.3
  • W 15 mph
  • 101.01 %
  • -346 ft.
  • Jan 21 4:00 pm
  • 34 deg F
  • 83%
  • 28.98 Hg
  • 30 deg F
  • 24.5
  • SW 14 mph
  • 101.40 %
  • -477 ft.
  • Jan 21 5:00 pm
  • 32 deg F
  • 85%
  • 29.00 Hg
  • 28 deg F
  • 23.1
  • NW 13 mph
  • 101.90 %
  • -647 ft.
  • Jan 21 6:00 pm
  • 31 deg F
  • 80%
  • 29.00 Hg
  • 26 deg F
  • 20.9
  • NW 14 mph
  • 102.16 %
  • -735 ft.
  • Jan 21 7:00 pm
  • 31 deg F
  • 81%
  • 29.03 Hg
  • 26 deg F
  • 21.1
  • NW 14 mph
  • 102.26 %
  • -767 ft.
  • Jan 21 8:00 pm
  • 30 deg F
  • 82%
  • 29.06 Hg
  • 26 deg F
  • 20.5
  • NW 15 mph
  • 102.58 %
  • -876 ft.
  • Jan 21 9:00 pm
  • 29 deg F
  • 80%
  • 29.09 Hg
  • 24 deg F
  • 19.2
  • NW 16 mph
  • 102.93 %
  • -991 ft.
  • Jan 21 10:00 pm
  • 27 deg F
  • 75%
  • 29.10 Hg
  • 21 deg F
  • 16.6
  • NW 16 mph
  • 103.47 %
  • -1174 ft.
  • Jan 21 11:00 pm
  • 23 deg F
  • 70%
  • 29.13 Hg
  • 17 deg F
  • 13.1
  • NW 16 mph
  • 104.51 %
  • -1518 ft.
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