Overview Realtime Historical Map View
Heat Advisory
2026-09-03T19:00:00-05:00

* WHAT...Heat index values of 100 to 105 expected. This is the third day in a row with forecast or observed heat indices above 100 degrees. * WHERE...Boone, DuPage, Kane, and McHenry Counties. * WHEN...Until 7 PM CDT this evening. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses especially after several days of dangerous heat. * ADDITIONAL DETAILS...A cold front possibly accompanied by thunderstorms will move inland from Lake Michigan this evening leading to rapidly improving conditions.

West Br Du Page River Near Warrenville, Il Historical Data

Historical Data


Streamflow Range


Date Average 2026 2025 2024 2023 2022 2021 2020 2019 2018 2017 2016 2015 2014 2013 2012 2011
01-01 179.17
01-02 144.4
01-03 115.65
01-04 150.11
01-05 118.46
01-06 98.16
01-07 88.13
01-08 103.92
01-09 165.82
01-10 151.53
01-11 189.25
01-12 222.05
01-13 162.24
01-14 145.11
01-15 178.1
01-16 148.51
01-17 98.13
01-18 89.09
01-19 108.26
01-20 92.61
01-21 75.55
01-22 80.15
01-23 106.66
01-24 117.08
01-25 123.73
01-26 142.75
01-27 165.41
01-28 141.22
01-29 145.86
01-30 155.8
01-31 185.12
02-01 184.32
02-02 144.32
02-03 190.79
02-04 161.59
02-05 155.71
02-06 139.53
02-07 121.12
02-08 161.82
02-09 111.04
02-10 130.47
02-11 139.11
02-12 140.36
02-13 104.6
02-14 87.63
02-15 92.87
02-16 94.99
02-17 132.77
02-18 139.46
02-19 115.53
02-20 144.62
02-21 298.39
02-22 245.88
02-23 238.82
02-24 251.04
02-25 179.83
02-26 135.91
02-27 138.37
02-28 188.8
02-29 98.7
03-01 175.34
03-02 180.24
03-03 140.36
03-04 128.31
03-05 129.36
03-06 168.71
03-07 153.58
03-08 142.41
03-09 156.86
03-10 205.86
03-11 313.07
03-12 305.64
03-13 233.97
03-14 210.86
03-15 220.31
03-16 235.44
03-17 225.94
03-18 183.69
03-19 168.51
03-20 199.24
03-21 174.31
03-22 141.96
03-23 133.27
03-24 156.43
03-25 171.67
03-26 197.73
03-27 170.85
03-28 147.29
03-29 190.38
03-30 154.24
03-31 242.84
04-01 270.05
04-02 221.68
04-03 282.97
04-04 264.61
04-05 247.49
04-06 254.09
04-07 251.98
04-08 202.6
04-09 177.69
04-10 192.32
04-11 196.87
04-12 185.76
04-13 154.99
04-14 164.48
04-15 172.62
04-16 266.41
04-17 227.15
04-18 268.0
04-19 481.68
04-20 353.52
04-21 250.64
04-22 192.07
04-23 188.59
04-24 187.71
04-25 174.62
04-26 173.45
04-27 140.19
04-28 168.22
04-29 198.84
04-30 396.46
05-01 449.94
05-02 350.65
05-03 279.21
05-04 337.27
05-05 243.2
05-06 209.27
05-07 189.97
05-08 166.69
05-09 196.49
05-10 258.72
05-11 216.09
05-12 202.68
05-13 219.67
05-14 211.02
05-15 298.0
05-16 451.39
05-17 266.54
05-18 305.23
05-19 267.07
05-20 172.33
05-21 161.22
05-22 235.55
05-23 220.49
05-24 187.7
05-25 154.55
05-26 192.17
05-27 199.36
05-28 221.57
05-29 183.46
05-30 221.56
05-31 262.89
06-01 194.41
06-02 147.49
06-03 113.55
06-04 94.37
06-05 122.27
06-06 103.71
06-07 93.36
06-08 79.58
06-09 116.39
06-10 182.61
06-11 198.85
06-12 179.21
06-13 133.81
06-14 103.98
06-15 160.35
06-16 282.96
06-17 239.86
06-18 187.76
06-19 197.37
06-20 168.71
06-21 125.91
06-22 221.06
06-23 238.23
06-24 180.41
06-25 150.24
06-26 197.74
06-27 198.93
06-28 154.53
06-29 111.35
06-30 133.55
07-01 152.75
07-02 167.9
07-03 189.92
07-04 186.82
07-05 138.97
07-06 258.39
07-07 168.12
07-08 140.1
07-09 120.02
07-10 89.99
07-11 98.69
07-12 110.25
07-13 158.15
07-14 154.89
07-15 100.64
07-16 133.31
07-17 110.25
07-18 88.74
07-19 99.59
07-20 99.19
07-21 102.49
07-22 99.53
07-23 115.95
07-24 189.0
07-25 175.78
07-26 96.56
07-27 74.24
07-28 108.38
07-29 154.32
07-30 205.23
07-31 128.94
08-01 115.22
08-02 128.35
08-03 99.16
08-04 85.66
08-05 68.53
08-06 67.03
08-07 62.94
08-08 96.88
08-09 106.85
08-10 122.55
08-11 100.36
08-12 121.24
08-13 99.38
08-14 81.44
08-15 76.11
08-16 87.29
08-17 79.72
08-18 127.92
08-19 134.21
08-20 142.95
08-21 156.25
08-22 133.69
08-23 132.84
08-24 140.65
08-25 99.85
08-26 87.15
08-27 101.81
08-28 82.65
08-29 68.55
08-30 105.78
08-31 84.71
09-01 77.49
09-02 75.58
09-03 72.49
09-04 89.81
09-05 65.81
09-06 59.34
09-07 79.28
09-08 63.22
09-09 80.72
09-10 71.69
09-11 90.86
09-12 104.72
09-13 90.14
09-14 102.68
09-15 66.89
09-16 67.51
09-17 51.94
09-18 60.12
09-19 84.42
09-20 96.38
09-21 75.3
09-22 58.76
09-23 93.91
09-24 82.73
09-25 56.59
09-26 48.51
09-27 68.66
09-28 101.37
09-29 116.97
09-30 114.89
10-01 83.88
10-02 72.27
10-03 88.62
10-04 146.03
10-05 102.76
10-06 110.84
10-07 103.97
10-08 99.16
10-09 80.04
10-10 64.73
10-11 111.55
10-12 114.7
10-13 89.61
10-14 88.28
10-15 255.98
10-16 214.3
10-17 100.71
10-18 82.95
10-19 76.78
10-20 76.35
10-21 63.05
10-22 58.04
10-23 90.93
10-24 99.81
10-25 130.26
10-26 132.32
10-27 161.07
10-28 149.35
10-29 105.77
10-30 97.24
10-31 103.76
11-01 134.81
11-02 97.55
11-03 86.33
11-04 72.51
11-05 84.22
11-06 67.26
11-07 89.82
11-08 68.09
11-09 86.72
11-10 92.35
11-11 72.76
11-12 73.19
11-13 72.06
11-14 59.84
11-15 54.89
11-16 56.46
11-17 57.54
11-18 94.09
11-19 89.06
11-20 71.62
11-21 67.58
11-22 92.95
11-23 73.13
11-24 69.67
11-25 87.89
11-26 105.38
11-27 119.92
11-28 103.92
11-29 121.19
11-30 97.71
12-01 95.67
12-02 156.52
12-03 156.69
12-04 120.16
12-05 99.74
12-06 90.72
12-07 79.21
12-08 71.27
12-09 68.45
12-10 70.21
12-11 79.69
12-12 80.74
12-13 100.42
12-14 79.71
12-15 145.1
12-16 168.84
12-17 121.38
12-18 95.15
12-19 91.11
12-20 73.76
12-21 108.27
12-22 120.27
12-23 106.49
12-24 137.02
12-25 100.84
12-26 90.24
12-27 95.24
12-28 113.42
12-29 142.24
12-30 189.85
12-31 170.29

Annual Peak Streamflow


Seasonal Comparison


Oceanic Nino Index