Water Temperature of Cambridge Reservoir in Lincoln, MA

Current Water Temperature

78.6°F

Measurement Time: Wednesday, July 1, 2026, 5:40 PM EDT

Temperature Locations

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Local Points of Interest

Hobbs Brook Basin

Cambridge Reservoir

Station Name: HOBBS BRK AT TRAPELO RD AT LINCOLN, MA
Data Source: Water Data - usgc.gov

Elevation Above Sea Level: 167 feet

Nearest Address:
Trapelo Rd
Lincoln, MA 01773
Middlesex County

GPS Coordinates: 42.42166667, -71.2711111

Nearby Water Temperatures

Cambridge Reservoir Tributary 3, Waltham, MA (0.7 mi)
Hobbs Brook, Lincoln, MA (1 mi)
Cambridge Reservoir Tributary 1, Lexington, MA (1.1 mi)
Cambridge Reservoir Tributary 2, Lexington, MA (1.1 mi)
Stony Brook, Waltham, MA (1.6 mi)
Stony Brook, Weston, MA (2.7 mi)
Shawsheen River, Bedford, MA (3.1 mi)
Stony Brook Tributary, Waltham, MA (3.4 mi)
Stony Brook Tributary, Weston, MA (3.5 mi)
Stony Brook, Weston, MA (3.6 mi)
Stony Brook Reservoir Tributary, Weston, MA (4.6 mi)
Fresh Pond, Cambridge, MA (6.9 mi)
Nashua River, Clinton, MA (20.1 mi)
Gates Brook, West Boylston, MA (26 mi)
Stillwater River, Sterling, MA (26.5 mi)

Weather for Lincoln, Massachusetts

Current Weather

84°F
Clear
Clear
87.8°F
88.1°F
72%
SW 8.3 mph
14.5 mph
84.2°F
68.4°F
0 in
0%
9 mi
1012 mbar
0

Five Day Weather Forecast

Sunny
Wed
H: 100°F
L: 71°F
Sunny
Thu
H: 104°F
L: 78°F
Sunny
Fri
H: 100°F
L: 75°F
Sunny
Sat
H: 97°F
L: 73°F
Patchy rain nearby
Sun
H: 76°F
L: 66°F

Air Quality

AQI: 1 - Good
PM2.5: 15.1 μg/m3
PM10: 18.2 μg/m3
Carbon Monoxide: 165 μg/m3
Nitrogen Dioxide: 8.8 μg/m3
Sulphur Dioxide: 1.2 μg/m3
Ozone: 109 μg/m3

Astronomical

Sunrise: 5:12 AM
Sun Transit: 12:49 AM
Sunset: 8:26 PM
Daylight: 15 hrs 15 mins
Moonrise: 9:55 PM
Moon Transit: 1:50 AM
Moonset: 6:22 AM
Moon Phase: Full
Moon Illumination: 94.7%

Best Times for Fishing or Hunting

Major Periods

1:20 AM - 3:50 AM
4:19 PM - 6:49 PM

Minor Periods

9:25 PM - 10:55 PM
5:52 AM - 7:22 AM

Action Rating: 3 out of 5

Air Quality Alert issued July 1 at 10:04AM EDT by NWS Boston/Norton MA

Effective: Wed July 1, 2026, 10:04 AM
Expires: Wed July 1, 2026, 11:00 PM

The Massachusetts Department of Environmental Protection has issued an Air Quality Alert for Ground Level Ozone, until 11 PM EDT this evening. An Air Quality Alert day means that Ground Level Ozone concentrations within the region may approach or exceed levels that are Unhealthy for Sensitive Groups. Air is unhealthy for sensitive children and adults, such as those with asthma, lung or heart disease, and older adults. Sensitive children and adults should limit prolonged outdoor activity. For additional information, please visit the Massachusetts Department of Environmental Protection website at: https://mass.gov/dep/massair/forecast


Air Quality Alert issued July 1 at 9:16AM EDT by NWS Boston/Norton MA

Effective: Wed July 1, 2026, 9:16 AM
Expires: Wed July 1, 2026, 11:00 PM

The Massachusetts Department of Environmental Protection has issued an Air Quality Alert for Ground Level Ozone, until 11 PM EDT this evening. An Air Quality Alert day means that Ground Level Ozone concentrations within the region may approach or exceed levels that are Unhealthy. Air is unhealthy. Everyone may begin to experience health effects, and sensitive children and adults, such as those with asthma, lung or heart disease, and older adults, may experience more serious effects. Everyone should reduce the time spent and intensity of activities outdoors and take more breaks. Sensitive children and adults should consider moving indoors or rescheduling outdoor activities. For information on how to protect yourself from smoke, visit the California smoke website: https://tinyurl.com/5cywd5ae. For additional information, please visit the Massachusetts Department of Environmental Protection website at: https://mass.gov/dep/massair/forecast
Wednesday, July 1, 2026

Weather Forecast

Sunny
100.4°F
70.5°F
84.9°F
59%
0 in
4%
0%
10.1 mph
9.2


Air Quality

AQI: 1 - Good
PM2.5: 12.4 μg/m3
PM10: 13.82 μg/m3
Carbon Monoxide: 146.33 μg/m3
Nitrogen Dioxide: 6.28 μg/m3
Sulphur Dioxide: 1.23 μg/m3
Ozone: 116.92 μg/m3

Astronomical

Sunrise: 5:12 AM
Sun Transit: 12:49 AM
Sunset: 8:26 PM
Daylight: 15 hrs 15 mins
Moonrise: 9:55 PM
Moon Transit: 1:50 AM
Moonset: 6:22 AM
Moon Phase: Full
Moon Illumination: 94.7%

Best Times for Fishing or Hunting

Major Periods

1:20 AM - 3:50 AM
4:19 PM - 6:49 PM

Minor Periods

9:25 PM - 10:55 PM
5:52 AM - 7:22 AM

Action Rating: 3 out of 5

Thursday, July 2, 2026

Weather Forecast

Sunny
103.5°F
77.9°F
89.7°F
53%
0 in
2%
0%
13.9 mph
9.5


Air Quality

AQI: 1 - Good
PM2.5: 12.8 μg/m3
PM10: 14.8 μg/m3
Carbon Monoxide: 147.96 μg/m3
Nitrogen Dioxide: 7.36 μg/m3
Sulphur Dioxide: 1.19 μg/m3
Ozone: 115.54 μg/m3

Astronomical

Sunrise: 5:12 AM
Sun Transit: 12:49 AM
Sunset: 8:26 PM
Daylight: 15 hrs 14 mins
Moonrise: 10:22 PM
Moon Transit: 2:37 AM
Moonset: 7:27 AM
Moon Phase: Waning Gibbous
Moon Illumination: 88.5%

Best Times for Fishing or Hunting

Major Periods

2:07 AM - 4:37 AM
5:05 PM - 7:35 PM

Minor Periods

9:52 PM - 11:22 PM
6:57 AM - 8:27 AM

Action Rating: 2 out of 5

Friday, July 3, 2026

Weather Forecast

Sunny
99.8°F
75.2°F
84.7°F
60%
0 in
5%
0%
16.1 mph
9.5


Air Quality

AQI: 1 - Good
PM2.5: 9.1 μg/m3
PM10: 10.3 μg/m3
Carbon Monoxide: 139.83 μg/m3
Nitrogen Dioxide: 6.49 μg/m3
Sulphur Dioxide: 1.07 μg/m3
Ozone: 104.42 μg/m3

Astronomical

Sunrise: 5:13 AM
Sun Transit: 12:49 AM
Sunset: 8:26 PM
Daylight: 15 hrs 13 mins
Moonrise: 10:45 PM
Moon Transit: 3:23 AM
Moonset: 8:34 AM
Moon Phase: Waning Gibbous
Moon Illumination: 80.3%

Best Times for Fishing or Hunting

Major Periods

2:53 AM - 5:23 AM
5:49 PM - 8:19 PM

Minor Periods

10:15 PM - 11:45 PM
8:04 AM - 9:34 AM

Action Rating: 4 out of 5

Saturday, July 4, 2026

Weather Forecast

Sunny
97.2°F
72.5°F
83.2°F
60%
0 in
17%
0%
6.7 mph
8.8


Air Quality

AQI: 1 - Good
PM2.5: 6.64 μg/m3
PM10: 7.11 μg/m3
Carbon Monoxide: 149.55 μg/m3
Nitrogen Dioxide: 6.77 μg/m3
Sulphur Dioxide: 0.68 μg/m3
Ozone: 88.79 μg/m3

Astronomical

Sunrise: 5:13 AM
Sun Transit: 12:49 AM
Sunset: 8:26 PM
Daylight: 15 hrs 12 mins
Moonrise: 11:05 PM
Moon Transit: 4:07 AM
Moonset: 9:39 AM
Moon Phase: Waning Gibbous
Moon Illumination: 70.6%

Best Times for Fishing or Hunting

Major Periods

3:37 AM - 6:07 AM
6:32 PM - 9:02 PM

Minor Periods

12:00 AM - 12:00 AM
9:09 AM - 10:39 AM

Action Rating: 2 out of 5

Sunday, July 5, 2026

Weather Forecast

Patchy rain nearby
76.1°F
65.7°F
70.1°F
92%
0.42 in
91%
0%
7.2 mph
4.9


Air Quality

AQI: 1 - Good
PM2.5: 9.7 μg/m3
PM10: 9.81 μg/m3
Carbon Monoxide: 245 μg/m3
Nitrogen Dioxide: 13.47 μg/m3
Sulphur Dioxide: 1.01 μg/m3
Ozone: 57 μg/m3

Astronomical

Sunrise: 5:14 AM
Sun Transit: 12:49 AM
Sunset: 8:25 PM
Daylight: 15 hrs 11 mins
Moonrise: 12:05 AM
Moon Transit: 4:49 AM
Moonset: 10:45 AM
Moon Phase: Waning Gibbous
Moon Illumination: 59.8%

Best Times for Fishing or Hunting

Major Periods

4:19 AM - 6:49 AM
7:15 PM - 9:45 PM

Minor Periods

10:15 AM - 11:45 AM
12:00 AM - 12:00 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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