Water Temperature of the Rock River in Byron, IL

Current Water Temperature

49.1°F

Measurement Time: Wednesday, March 25, 2026, 11:15 AM CDT

Temperature Locations

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Local Points of Interest

River Park East; Hamas Park; Sunshine Park; Byron Forest Preserve District

Rock River

Station Name: ROCK RIVER AT BYRON, IL
Data Source: Water Data - usgc.gov

Elevation Above Sea Level: 679 feet

Nearest Address:
State Rte 72
Byron, IL 61010
Ogle County

GPS Coordinates: 42.12218889, -89.2553639

Nearby Water Temperatures

Mississippi River, Fulton, IL (48.7 mi)
Mississippi River, Fulton, IL (48.9 mi)
Beaver Slough, Clinton, IA (52.2 mi)
Fox River, McHenry, IL (53.2 mi)
Mississippi River, Camanche, IA (56.4 mi)
Illinois River, Utica, IL (56.9 mi)
Sugar River, Verona, WI (59 mi)
Mississippi River, Bellevue, IA (60.5 mi)
Badger Mill Creek, Verona, WI (60.8 mi)
Swan Creek, Fitchburg, WI (60.9 mi)
Illinois River, Marseilles, IL (61.7 mi)
Fox River, Burlington, WI (62.5 mi)
Lake Monona, Madison, WI (65.4 mi)
Eagle Spring Lake, Mukwonago, WI (65.6 mi)
Illinois River, Seneca, IL (65.7 mi)

Weather for Byron, Illinois

Current Weather

72°F
Overcast
Overcast
73.7°F
76.8°F
31%
SW 15.2 mph
20.1 mph
77.7°F
43.9°F
0 in
100%
9 mi
1009 mbar
1.1

Five Day Weather Forecast

Sunny
Wed
H: 80°F
L: 35°F
Moderate rain
Thu
H: 67°F
L: 37°F
Overcast
Fri
H: 42°F
L: 29°F
Sunny
Sat
H: 51°F
L: 26°F
Patchy rain nearby
Sun
H: 57°F
L: 38°F

Air Quality

AQI: 1 - Good
PM2.5: 7.65 μg/m3
PM10: 7.65 μg/m3
Carbon Monoxide: 245.85 μg/m3
Nitrogen Dioxide: 6.45 μg/m3
Sulphur Dioxide: 2.65 μg/m3
Ozone: 87 μg/m3

Astronomical

Sunrise: 6:52 AM
Sun Transit: 1:02 PM
Sunset: 7:15 PM
Daylight: 12 hrs 23 mins
Moonrise: 11:04 AM
Moon Transit: 7:19 PM
Moonset: 2:34 AM
Moon Phase: First Quarter
Moon Illumination: 45.1%

Best Times for Fishing or Hunting

Major Periods

6:24 AM - 8:54 AM
6:49 PM - 9:19 PM

Minor Periods

10:34 AM - 12:04 AM
2:04 AM - 3:34 AM

Action Rating: 4 out of 5

Wednesday, March 25, 2026

Weather Forecast

Sunny
79.5°F
34.5°F
54.8°F
51%
0 in
0%
0%
18.8 mph
1.4


Air Quality

AQI: 1 - Good
PM2.5: 6.33 μg/m3
PM10: 6.42 μg/m3
Carbon Monoxide: 192.17 μg/m3
Nitrogen Dioxide: 7.18 μg/m3
Sulphur Dioxide: 5.38 μg/m3
Ozone: 72.56 μg/m3

Astronomical

Sunrise: 6:52 AM
Sun Transit: 1:02 PM
Sunset: 7:15 PM
Daylight: 12 hrs 23 mins
Moonrise: 11:04 AM
Moon Transit: 7:19 PM
Moonset: 2:34 AM
Moon Phase: First Quarter
Moon Illumination: 45.1%

Best Times for Fishing or Hunting

Major Periods

6:24 AM - 8:54 AM
6:49 PM - 9:19 PM

Minor Periods

10:34 AM - 12:04 AM
2:04 AM - 3:34 AM

Action Rating: 4 out of 5

Thursday, March 26, 2026

Weather Forecast

Moderate rain
67.3°F
36.9°F
52°F
81%
0.52 in
79%
0%
19.2 mph
0.8


Air Quality

AQI: 1 - Good
PM2.5: 11.48 μg/m3
PM10: 11.79 μg/m3
Carbon Monoxide: 217.01 μg/m3
Nitrogen Dioxide: 7.41 μg/m3
Sulphur Dioxide: 3.05 μg/m3
Ozone: 76.4 μg/m3

Astronomical

Sunrise: 6:50 AM
Sun Transit: 1:02 PM
Sunset: 7:16 PM
Daylight: 12 hrs 26 mins
Moonrise: 12:15 AM
Moon Transit: 8:19 PM
Moonset: 3:29 AM
Moon Phase: First Quarter
Moon Illumination: 56.4%

Best Times for Fishing or Hunting

Major Periods

7:26 AM - 9:56 AM
7:49 PM - 10:19 PM

Minor Periods

11:45 AM - 1:15 PM
2:59 AM - 4:29 AM

Action Rating: 2 out of 5

Friday, March 27, 2026

Weather Forecast

Overcast
41.9°F
28.8°F
36.3°F
70%
0 in
0%
0%
17.7 mph
1.5


Air Quality

AQI: 1 - Good
PM2.5: 3.86 μg/m3
PM10: 4.07 μg/m3
Carbon Monoxide: 179.69 μg/m3
Nitrogen Dioxide: 3.32 μg/m3
Sulphur Dioxide: 1.59 μg/m3
Ozone: 82.2 μg/m3

Astronomical

Sunrise: 6:48 AM
Sun Transit: 1:02 PM
Sunset: 7:17 PM
Daylight: 12 hrs 29 mins
Moonrise: 1:30 PM
Moon Transit: 9:14 PM
Moonset: 4:12 AM
Moon Phase: First Quarter
Moon Illumination: 67.4%

Best Times for Fishing or Hunting

Major Periods

8:23 AM - 10:53 AM
8:44 PM - 11:14 PM

Minor Periods

1:00 PM - 2:30 PM
3:42 AM - 5:12 AM

Action Rating: 2 out of 5

Saturday, March 28, 2026

Weather Forecast

Sunny
51.4°F
25.5°F
36.9°F
53%
0 in
0%
0%
14.8 mph
1.2


Air Quality

AQI: 1 - Good
PM2.5: 4.3 μg/m3
PM10: 4.72 μg/m3
Carbon Monoxide: 173.75 μg/m3
Nitrogen Dioxide: 4.46 μg/m3
Sulphur Dioxide: 1.61 μg/m3
Ozone: 79.76 μg/m3

Astronomical

Sunrise: 6:47 AM
Sun Transit: 1:02 PM
Sunset: 7:18 PM
Daylight: 12 hrs 32 mins
Moonrise: 2:45 PM
Moon Transit: 10:05 PM
Moonset: 4:46 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 77.5%

Best Times for Fishing or Hunting

Major Periods

9:17 AM - 11:47 AM
12:00 AM - 12:00 AM

Minor Periods

2:15 PM - 3:45 PM
4:16 AM - 5:46 AM

Action Rating: 2 out of 5

Sunday, March 29, 2026

Weather Forecast

Patchy rain nearby
56.9°F
37.8°F
46.5°F
59%
0.01 in
74%
0%
19.2 mph
1.2


Air Quality

AQI: 1 - Good
PM2.5: 7.73 μg/m3
PM10: 7.84 μg/m3
Carbon Monoxide: 222.08 μg/m3
Nitrogen Dioxide: 9.07 μg/m3
Sulphur Dioxide: 2.96 μg/m3
Ozone: 68 μg/m3

Astronomical

Sunrise: 6:45 AM
Sun Transit: 1:01 PM
Sunset: 7:19 PM
Daylight: 12 hrs 34 mins
Moonrise: 3:57 PM
Moon Transit: 10:53 PM
Moonset: 5:13 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 86.2%

Best Times for Fishing or Hunting

Major Periods

10:06 AM - 12:36 AM
12:00 AM - 12:00 AM

Minor Periods

3:27 PM - 4:57 PM
4:43 AM - 6:13 AM

Action Rating: 2 out of 5

The times presented here are based upon the solunar theory, which is the idea that the movements of fish and other animals are affected by the location of the sun and moon. The major periods are believed to be the times of the greatest animal activity and occur when the moon is directly overhead or underfoot (lunar transits). The minor periods also see increased activity and occur when the moon is rising or setting. The strongest activity occurs during full or new moons, and the weakest during quarter or three quarter moons. This is indicated by the Action Rating.

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