Water Temperature of Cambridge Reservoir Tributary 3 in Waltham, MA

Current Water Temperature

66.7°F

Measurement Time: Thursday, July 30, 2026, 8:40 PM EDT

Temperature Locations

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Local Points of Interest

Hobbs Brook Basin

Cambridge Reservoir Tributary 3

Station Name: CAMBRIDGE RES., UNNAMED TRIB 3, NR LEXINGTON, MA
Data Source: Water Data - usgc.gov

Elevation Above Sea Level: 197 feet

Nearest Address:
170 Data Dr
Waltham, MA 02451
Middlesex County

GPS Coordinates: 42.4198177, -71.2575565

Nearby Water Temperatures

Cambridge Reservoir, Lincoln, MA (0.7 mi)
Cambridge Reservoir Tributary 2, Lexington, MA (1.1 mi)
Cambridge Reservoir Tributary 1, Lexington, MA (1.2 mi)
Hobbs Brook, Lincoln, MA (1.3 mi)
Stony Brook, Waltham, MA (1.7 mi)
Stony Brook, Weston, MA (2.9 mi)
Stony Brook Tributary, Waltham, MA (3.3 mi)
Shawsheen River, Bedford, MA (3.3 mi)
Stony Brook Tributary, Weston, MA (3.5 mi)
Stony Brook, Weston, MA (3.6 mi)
Stony Brook Reservoir Tributary, Weston, MA (4.5 mi)
Fresh Pond, Cambridge, MA (6.2 mi)
Nashua River, Clinton, MA (20.8 mi)
Gates Brook, West Boylston, MA (26.7 mi)
Stillwater River, Sterling, MA (27.2 mi)

Weather for Waltham, Massachusetts

Current Weather

62.6°F
Clear
Clear
63.9°F
62.6°F
92%
NW 3.8 mph
7.7 mph
62.6°F
60.3°F
0 in
3%
0 mi
1011 mbar
0

Five Day Weather Forecast

Patchy rain nearby
Fri
H: 79°F
L: 60°F
Sunny
Sat
H: 89°F
L: 63°F
Partly Cloudy
Sun
H: 86°F
L: 66°F
Light rain shower
Mon
H: 85°F
L: 67°F
Patchy rain nearby
Tue
H: 84°F
L: 68°F

Air Quality

AQI: 1 - Good
PM2.5: 14.8 μg/m3
PM10: 15 μg/m3
Carbon Monoxide: 210 μg/m3
Nitrogen Dioxide: 38.5 μg/m3
Sulphur Dioxide: 1.2 μg/m3
Ozone: 16 μg/m3

Astronomical

Sunrise: 5:36 AM
Sun Transit: 12:51 AM
Sunset: 8:06 PM
Daylight: 14 hrs 30 mins
Moonrise: 9:11 PM
Moon Transit: 2:05 AM
Moonset: 7:31 AM
Moon Phase: Full
Moon Illumination: 92.0%

Best Times for Fishing or Hunting

Major Periods

1:35 AM - 4:05 AM
4:32 PM - 7:02 PM

Minor Periods

8:41 PM - 10:11 PM
7:01 AM - 8:31 AM

Action Rating: 3 out of 5

Friday, July 31, 2026

Weather Forecast

Patchy rain nearby
79.1°F
60.1°F
68.9°F
83%
0.14 in
71%
0%
4.9 mph
7.2


Air Quality

AQI: 1 - Good
PM2.5: 11.15 μg/m3
PM10: 11.36 μg/m3
Carbon Monoxide: 168.75 μg/m3
Nitrogen Dioxide: 19.3 μg/m3
Sulphur Dioxide: 0.95 μg/m3
Ozone: 63.21 μg/m3

Astronomical

Sunrise: 5:36 AM
Sun Transit: 12:51 AM
Sunset: 8:06 PM
Daylight: 14 hrs 30 mins
Moonrise: 9:11 PM
Moon Transit: 2:05 AM
Moonset: 7:31 AM
Moon Phase: Full
Moon Illumination: 92.0%

Best Times for Fishing or Hunting

Major Periods

1:35 AM - 4:05 AM
4:32 PM - 7:02 PM

Minor Periods

8:41 PM - 10:11 PM
7:01 AM - 8:31 AM

Action Rating: 3 out of 5

Saturday, August 1, 2026

Weather Forecast

Sunny
89.4°F
62.8°F
74.6°F
71%
0 in
7%
0%
8.1 mph
8.4


Air Quality

AQI: 1 - Good
PM2.5: 12.73 μg/m3
PM10: 12.92 μg/m3
Carbon Monoxide: 168.25 μg/m3
Nitrogen Dioxide: 18.9 μg/m3
Sulphur Dioxide: 1.04 μg/m3
Ozone: 79.96 μg/m3

Astronomical

Sunrise: 5:37 AM
Sun Transit: 12:51 AM
Sunset: 8:05 PM
Daylight: 14 hrs 27 mins
Moonrise: 9:31 PM
Moon Transit: 2:49 AM
Moonset: 8:38 AM
Moon Phase: Waning Gibbous
Moon Illumination: 84.9%

Best Times for Fishing or Hunting

Major Periods

2:19 AM - 4:49 AM
5:15 PM - 7:45 PM

Minor Periods

9:01 PM - 10:31 PM
8:08 AM - 9:38 AM

Action Rating: 3 out of 5

Sunday, August 2, 2026

Weather Forecast

Partly Cloudy
85.8°F
65.8°F
75.4°F
71%
0 in
9%
0%
10.3 mph
7.1


Air Quality

AQI: 1 - Good
PM2.5: 8.44 μg/m3
PM10: 10.35 μg/m3
Carbon Monoxide: 138.46 μg/m3
Nitrogen Dioxide: 6.57 μg/m3
Sulphur Dioxide: 1.1 μg/m3
Ozone: 82.04 μg/m3

Astronomical

Sunrise: 5:38 AM
Sun Transit: 12:51 AM
Sunset: 8:04 PM
Daylight: 14 hrs 25 mins
Moonrise: 9:51 PM
Moon Transit: 3:32 AM
Moonset: 9:44 AM
Moon Phase: Waning Gibbous
Moon Illumination: 75.9%

Best Times for Fishing or Hunting

Major Periods

3:02 AM - 5:32 AM
6:20 PM - 8:50 PM

Minor Periods

9:21 PM - 10:51 PM
9:14 AM - 10:44 AM

Action Rating: 3 out of 5

Monday, August 3, 2026

Weather Forecast

Light rain shower
84.6°F
67.1°F
73.6°F
89%
0.47 in
89%
0%
13.6 mph
6.6


Air Quality

AQI: 1 - Good
PM2.5: 5.22 μg/m3
PM10: 6.63 μg/m3
Carbon Monoxide: 143.66 μg/m3
Nitrogen Dioxide: 6.97 μg/m3
Sulphur Dioxide: 0.67 μg/m3
Ozone: 51.75 μg/m3

Astronomical

Sunrise: 5:39 AM
Sun Transit: 12:51 AM
Sunset: 8:02 PM
Daylight: 14 hrs 23 mins
Moonrise: 10:12 PM
Moon Transit: 4:15 AM
Moonset: 10:53 AM
Moon Phase: Waning Gibbous
Moon Illumination: 65.6%

Best Times for Fishing or Hunting

Major Periods

3:45 AM - 6:15 AM
6:42 PM - 9:12 PM

Minor Periods

9:42 PM - 11:12 PM
10:23 AM - 11:53 AM

Action Rating: 2 out of 5

Tuesday, August 4, 2026

Weather Forecast

Patchy rain nearby
84.2°F
68.3°F
74.4°F
85%
0.21 in
83%
0%
6 mph
6


Air Quality

AQI: 1 - Good
PM2.5: 1.4 μg/m3
PM10: 1.67 μg/m3
Carbon Monoxide: 115.89 μg/m3
Nitrogen Dioxide: 4.47 μg/m3
Sulphur Dioxide: 0.38 μg/m3
Ozone: 48.11 μg/m3

Astronomical

Sunrise: 5:40 AM
Sun Transit: 12:51 AM
Sunset: 8:01 PM
Daylight: 14 hrs 21 mins
Moonrise: 10:37 PM
Moon Transit: 5:01 AM
Moonset: 12:04 AM
Moon Phase: Last Quarter
Moon Illumination: 54.6%

Best Times for Fishing or Hunting

Major Periods

4:31 AM - 7:01 AM
7:30 PM - 10:00 PM

Minor Periods

10:07 PM - 11:37 PM
11:34 AM - 1:04 PM

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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