Water Temperature of the Rock River in Byron, IL

Current Water Temperature

86.9°F

Measurement Time: Tuesday, July 14, 2026, 2:15 PM 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

90°F
Sunny
Sunny
94.5°F
91.1°F
56%
WNW 5.1 mph
10.8 mph
88°F
65.5°F
0 in
0%
9 mi
1021 mbar
0

Five Day Weather Forecast

Sunny
Tue
H: 101°F
L: 66°F
Sunny
Wed
H: 89°F
L: 70°F
Sunny
Thu
H: 89°F
L: 72°F
Patchy rain nearby
Fri
H: 87°F
L: 72°F
Sunny
Sat
H: 88°F
L: 71°F

Air Quality

AQI: 1 - Good
PM2.5: 2.3 μg/m3
PM10: 2.5 μg/m3
Carbon Monoxide: 136 μg/m3
Nitrogen Dioxide: 8.2 μg/m3
Sulphur Dioxide: 0.4 μg/m3
Ozone: 91 μg/m3

Astronomical

Sunrise: 5:33 AM
Sun Transit: 1:02 PM
Sunset: 8:32 PM
Daylight: 14 hrs 59 mins
Moonrise: 5:29 AM
Moon Transit: 1:26 PM
Moonset: 9:10 PM
Moon Phase: New
Moon Illumination: 1.9%

Best Times for Fishing or Hunting

Major Periods

12:31 AM - 3:01 AM
12:56 AM - 3:26 PM

Minor Periods

8:40 PM - 10:10 PM
4:59 AM - 6:29 AM

Action Rating: 4 out of 5

Air Quality Alert issued July 14 at 11:23AM CDT by NWS Chicago IL

Effective: Tue July 14, 2026, 11:23 AM
Expires: Thu July 16, 2026, 12:00 AM

The Illinois Environmental Protection Agency has determined that the Air Pollution Action Day will remain in effect for the greater Chicago Metropolitan Area until midnight Wednesday Night. A Chicago Area Air Pollution Action Day is declared when weather conditions are such that widespread ozone and or particulate levels are expected to be at or above the Unhealthy for Sensitive Groups category of the Air Quality Index for multiple days. Ozone is expected to be the primary pollutant of concern although smoke/PM2.5 may also become a concern later in the work week. Active children and adults, especially people with pulmonary or respiratory disease such as asthma, should limit prolonged outdoor activity. Area residents are urged to reduce pollution levels. Air quality forecasts, current air quality, and tips on how you can reduce your emissions can be found at www.airnow.gov. Media contact...Illinois EPA.


Tuesday, July 14, 2026

Weather Forecast

Sunny
100.8°F
65.5°F
82.6°F
63%
0 in
3%
0%
5.8 mph
10


Air Quality

AQI: 1 - Good
PM2.5: 4.22 μg/m3
PM10: 4.45 μg/m3
Carbon Monoxide: 147.08 μg/m3
Nitrogen Dioxide: 17.55 μg/m3
Sulphur Dioxide: 0.6 μg/m3
Ozone: 69.67 μg/m3

Astronomical

Sunrise: 5:33 AM
Sun Transit: 1:02 PM
Sunset: 8:32 PM
Daylight: 14 hrs 59 mins
Moonrise: 5:29 AM
Moon Transit: 1:26 PM
Moonset: 9:10 PM
Moon Phase: New
Moon Illumination: 1.9%

Best Times for Fishing or Hunting

Major Periods

12:31 AM - 3:01 AM
12:56 AM - 3:26 PM

Minor Periods

8:40 PM - 10:10 PM
4:59 AM - 6:29 AM

Action Rating: 4 out of 5

Wednesday, July 15, 2026

Weather Forecast

Sunny
88.9°F
70.2°F
79.7°F
76%
0 in
8%
0%
5.4 mph
9.8


Air Quality

AQI: 1 - Good
PM2.5: 3.88 μg/m3
PM10: 4.49 μg/m3
Carbon Monoxide: 150.75 μg/m3
Nitrogen Dioxide: 11.23 μg/m3
Sulphur Dioxide: 0.62 μg/m3
Ozone: 83.75 μg/m3

Astronomical

Sunrise: 5:34 AM
Sun Transit: 1:03 PM
Sunset: 8:32 PM
Daylight: 14 hrs 57 mins
Moonrise: 6:52 AM
Moon Transit: 2:25 PM
Moonset: 9:44 PM
Moon Phase: New
Moon Illumination: 0.2%

Best Times for Fishing or Hunting

Major Periods

1:32 AM - 4:02 AM
1:55 PM - 4:25 PM

Minor Periods

9:14 PM - 10:44 PM
6:22 AM - 7:52 AM

Action Rating: 3 out of 5

Thursday, July 16, 2026

Weather Forecast

Sunny
88.5°F
72°F
79.7°F
79%
0.01 in
23%
0%
7.2 mph
9.6


Air Quality

AQI: 1 - Good
PM2.5: 4.39 μg/m3
PM10: 4.95 μg/m3
Carbon Monoxide: 165.38 μg/m3
Nitrogen Dioxide: 9.65 μg/m3
Sulphur Dioxide: 1.15 μg/m3
Ozone: 93.75 μg/m3

Astronomical

Sunrise: 5:35 AM
Sun Transit: 1:03 PM
Sunset: 8:31 PM
Daylight: 14 hrs 56 mins
Moonrise: 8:11 AM
Moon Transit: 3:18 PM
Moonset: 10:11 PM
Moon Phase: New
Moon Illumination: 2.4%

Best Times for Fishing or Hunting

Major Periods

2:28 AM - 4:58 AM
2:48 PM - 5:18 PM

Minor Periods

9:41 PM - 11:11 PM
7:41 AM - 9:11 AM

Action Rating: 3 out of 5

Friday, July 17, 2026

Weather Forecast

Patchy rain nearby
87°F
71.7°F
78.4°F
84%
0.32 in
78%
0%
6.9 mph
8.8


Air Quality

AQI: 1 - Good
PM2.5: 3.25 μg/m3
PM10: 3.47 μg/m3
Carbon Monoxide: 163.23 μg/m3
Nitrogen Dioxide: 7.7 μg/m3
Sulphur Dioxide: 1.35 μg/m3
Ozone: 97.96 μg/m3

Astronomical

Sunrise: 5:36 AM
Sun Transit: 1:03 PM
Sunset: 8:30 PM
Daylight: 14 hrs 54 mins
Moonrise: 9:26 AM
Moon Transit: 4:06 PM
Moonset: 10:34 PM
Moon Phase: Waxing Crescent
Moon Illumination: 7.0%

Best Times for Fishing or Hunting

Major Periods

3:19 AM - 5:49 AM
3:36 PM - 6:06 PM

Minor Periods

10:04 PM - 11:34 PM
8:56 AM - 10:26 AM

Action Rating: 3 out of 5

Saturday, July 18, 2026

Weather Forecast

Sunny
87.8°F
71.3°F
78.6°F
84%
0.02 in
39%
0%
15.7 mph
8.9


Air Quality

AQI: 1 - Good
PM2.5: 1.53 μg/m3
PM10: 1.56 μg/m3
Carbon Monoxide: 245.88 μg/m3
Nitrogen Dioxide: 9.19 μg/m3
Sulphur Dioxide: 0.75 μg/m3
Ozone: 59.75 μg/m3

Astronomical

Sunrise: 5:37 AM
Sun Transit: 1:03 PM
Sunset: 8:29 PM
Daylight: 14 hrs 53 mins
Moonrise: 10:38 AM
Moon Transit: 4:52 PM
Moonset: 10:55 PM
Moon Phase: Waxing Crescent
Moon Illumination: 13.9%

Best Times for Fishing or Hunting

Major Periods

4:05 AM - 6:35 AM
4:22 PM - 6:52 PM

Minor Periods

10:25 PM - 11:55 PM
10:08 AM - 11:38 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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