Water Temperature of Cambridge Reservoir Tributary 3 in Waltham, MA

Current Water Temperature

40.3°F

Measurement Time: Monday, February 16, 2026, 1:30 PM EST

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

34°F
Overcast
Overcast
31.4°F
33.1°F
67%
NNE 3.1 mph
6.6 mph
30.6°F
30.4°F
0 in
100%
9 mi
1021 mbar
0

Five Day Weather Forecast

Partly Cloudy
Mon
H: 37°F
L: 24°F
Overcast
Tue
H: 35°F
L: 28°F
Freezing fog
Wed
H: 35°F
L: 28°F
Moderate or heavy snow showers
Thu
H: 40°F
L: 22°F
Heavy snow
Fri
H: 35°F
L: 26°F

Air Quality

AQI: 2 - Moderate
PM2.5: 43.15 μg/m3
PM10: 46.45 μg/m3
Carbon Monoxide: 648.85 μg/m3
Nitrogen Dioxide: 76.25 μg/m3
Sulphur Dioxide: 7.75 μg/m3
Ozone: 7 μg/m3

Astronomical

Sunrise: 6:40 AM
Sun Transit: 12:00 AM
Sunset: 5:18 PM
Daylight: 10 hrs 38 mins
Moonrise: 6:24 AM
Moon Transit: 11:23 AM
Moonset: 4:31 PM
Moon Phase: New
Moon Illumination: 0.9%

Best Times for Fishing or Hunting

Major Periods

1:03 AM - 3:33 AM
10:53 AM - 1:23 PM

Minor Periods

4:01 PM - 5:31 PM
5:54 AM - 7:24 AM

Action Rating: 4 out of 5

Monday, February 16, 2026

Weather Forecast

Partly Cloudy
36.5°F
23.9°F
29.6°F
81%
0 in
0%
0%
5.4 mph
0.4


Air Quality

AQI: 2 - Moderate
PM2.5: 24.59 μg/m3
PM10: 26.96 μg/m3
Carbon Monoxide: 521.41 μg/m3
Nitrogen Dioxide: 54.99 μg/m3
Sulphur Dioxide: 5.13 μg/m3
Ozone: 33.16 μg/m3

Astronomical

Sunrise: 6:40 AM
Sun Transit: 12:00 AM
Sunset: 5:18 PM
Daylight: 10 hrs 38 mins
Moonrise: 6:24 AM
Moon Transit: 11:23 AM
Moonset: 4:31 PM
Moon Phase: New
Moon Illumination: 0.9%

Best Times for Fishing or Hunting

Major Periods

1:03 AM - 3:33 AM
10:53 AM - 1:23 PM

Minor Periods

4:01 PM - 5:31 PM
5:54 AM - 7:24 AM

Action Rating: 4 out of 5

Tuesday, February 17, 2026

Weather Forecast

Overcast
35.2°F
28°F
32.3°F
93%
0 in
0%
3%
7.2 mph
0.2


Air Quality

AQI: 2 - Moderate
PM2.5: 31.41 μg/m3
PM10: 35.32 μg/m3
Carbon Monoxide: 476.45 μg/m3
Nitrogen Dioxide: 56.7 μg/m3
Sulphur Dioxide: 5.5 μg/m3
Ozone: 27.4 μg/m3

Astronomical

Sunrise: 6:39 AM
Sun Transit: 12:00 AM
Sunset: 5:20 PM
Daylight: 10 hrs 41 mins
Moonrise: 6:49 AM
Moon Transit: 12:09 AM
Moonset: 5:42 PM
Moon Phase: New
Moon Illumination: 0.0%

Best Times for Fishing or Hunting

Major Periods

1:51 AM - 4:21 AM
11:39 AM - 2:09 PM

Minor Periods

5:12 PM - 6:42 PM
6:19 AM - 7:49 AM

Action Rating: 5 out of 5

Wednesday, February 18, 2026

Weather Forecast

Freezing fog
34.7°F
27.9°F
32°F
95%
0.32 in
86%
16%
5.4 mph
0.4


Air Quality

AQI: 2 - Moderate
PM2.5: 35.92 μg/m3
PM10: 37.7 μg/m3
Carbon Monoxide: 388.81 μg/m3
Nitrogen Dioxide: 60.41 μg/m3
Sulphur Dioxide: 5.29 μg/m3
Ozone: 13.96 μg/m3

Astronomical

Sunrise: 6:38 AM
Sun Transit: 11:58 AM
Sunset: 5:21 PM
Daylight: 10 hrs 43 mins
Moonrise: 7:10 AM
Moon Transit: 12:55 AM
Moonset: 6:53 PM
Moon Phase: New
Moon Illumination: 1.3%

Best Times for Fishing or Hunting

Major Periods

2:37 AM - 5:07 AM
12:25 AM - 2:55 PM

Minor Periods

6:23 PM - 7:53 PM
6:40 AM - 8:10 AM

Action Rating: 4 out of 5

Thursday, February 19, 2026

Weather Forecast

Moderate or heavy snow showers
40.3°F
22.1°F
30.1°F
75%
0.29 in
82%
19%
5.4 mph
0.5


Air Quality

AQI: 1 - Good
PM2.5: 12.23 μg/m3
PM10: 13.1 μg/m3
Carbon Monoxide: 281.01 μg/m3
Nitrogen Dioxide: 26.93 μg/m3
Sulphur Dioxide: 3.72 μg/m3
Ozone: 52.92 μg/m3

Astronomical

Sunrise: 6:36 AM
Sun Transit: 11:58 AM
Sunset: 5:22 PM
Daylight: 10 hrs 46 mins
Moonrise: 7:31 AM
Moon Transit: 4:07 PM
Moonset: 8:04 PM
Moon Phase: Waxing Crescent
Moon Illumination: 5.2%

Best Times for Fishing or Hunting

Major Periods

3:23 AM - 5:53 AM
3:37 PM - 6:07 PM

Minor Periods

7:34 PM - 9:04 PM
7:01 AM - 8:31 AM

Action Rating: 3 out of 5

Friday, February 20, 2026

Weather Forecast

Heavy snow
34.5°F
25.9°F
30.6°F
91%
0.47 in
77%
27%
7.2 mph
0.3


Air Quality

AQI: 2 - Moderate
PM2.5: 28.25 μg/m3
PM10: 28.91 μg/m3
Carbon Monoxide: 547.79 μg/m3
Nitrogen Dioxide: 65.76 μg/m3
Sulphur Dioxide: 7.11 μg/m3
Ozone: 10.92 μg/m3

Astronomical

Sunrise: 6:35 AM
Sun Transit: 11:58 AM
Sunset: 5:24 PM
Daylight: 10 hrs 49 mins
Moonrise: 7:52 AM
Moon Transit: 2:27 PM
Moonset: 9:17 PM
Moon Phase: Waxing Crescent
Moon Illumination: 11.3%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
1:57 PM - 4:27 PM

Minor Periods

8:47 PM - 10:17 PM
7:22 AM - 8:52 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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