Water Temperature of Cambridge Reservoir in Lincoln, MA

Current Water Temperature

74.5°F

Measurement Time: Friday, June 12, 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

82°F
Clear
Clear
87.7°F
83.4°F
74%
N 2.2 mph
4.2 mph
79.4°F
69.3°F
0 in
0%
9 mi
1003 mbar
0

Five Day Weather Forecast

Sunny
Fri
H: 97°F
L: 71°F
Sunny
Sat
H: 88°F
L: 68°F
Patchy rain nearby
Sun
H: 88°F
L: 62°F
Partly Cloudy
Mon
H: 81°F
L: 60°F
Sunny
Tue
H: 78°F
L: 54°F

Air Quality

AQI: 1 - Good
PM2.5: 13.4 μg/m3
PM10: 14.4 μg/m3
Carbon Monoxide: 245 μg/m3
Nitrogen Dioxide: 20.4 μg/m3
Sulphur Dioxide: 1.2 μg/m3
Ozone: 97 μg/m3

Astronomical

Sunrise: 5:07 AM
Sun Transit: 12:45 AM
Sunset: 8:23 PM
Daylight: 15 hrs 16 mins
Moonrise: 2:36 AM
Moon Transit: 10:08 AM
Moonset: 5:55 PM
Moon Phase: Waning Crescent
Moon Illumination: 2.0%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
9:38 AM - 12:08 AM

Minor Periods

5:25 PM - 6:55 PM
2:06 AM - 3:36 AM

Action Rating: 2 out of 5

Heat Advisory issued June 12 at 2:44AM EDT until June 12 at 8:00PM EDT by NWS Boston/Norton MA

Effective: Fri June 12, 2026, 2:44 AM
Expires: Fri June 12, 2026, 8:00 PM

* WHAT...Heat index values up to 96. * WHERE...Portions of central, eastern, northeastern, and southeastern Massachusetts and northern Rhode Island. * WHEN...Until 8 PM EDT this evening. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses.

Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors.


Air Quality Alert issued June 12 at 2:48AM EDT by NWS Boston/Norton MA

Non-Weather Emergency Message. Not sent to IPAWS.

Effective: Fri June 12, 2026, 2:48 AM
Expires: Fri June 12, 2026, 11:15 PM

The Massachusetts Department of Environmental Protection has issued an Air Quality Alert for Ground Level Ozone, from 11 AM this morning to 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


Heat Advisory issued June 12 at 2:29AM EDT until June 12 at 8:00PM EDT by NWS Gray ME

Effective: Fri June 12, 2026, 2:29 AM
Expires: Fri June 12, 2026, 8:00 PM

* WHAT...Heat index values of 95 to 100 expected. * WHERE...Portions of southwest and western Maine and central, northern, and southern New Hampshire. * WHEN...From noon today to 8 PM EDT this evening. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses.

Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Take extra precautions when outside. Wear lightweight and loose fitting clothing. Try to limit strenuous activities to early morning or evening. Take action when you see symptoms of heat exhaustion and heat stroke.


Beach Hazards Statement issued June 12 at 2:38PM EDT until June 13 at 8:00PM EDT by NWS Gray ME

Effective: Fri June 12, 2026, 2:38 PM
Expires: Fri June 12, 2026, 10:45 PM

* WHAT...Warm air temperatures in the 80s to low 90s may cause people to underestimate the dangers of the cold water temperatures in the low to mid 50s. * WHERE...In Maine, Coastal York, Coastal Cumberland, Sagadahoc, Lincoln, Knox and Coastal Waldo Counties. In New Hampshire, Coastal Rockingham County. * WHEN...From Saturday morning through Saturday evening. * IMPACTS...The cold water temperatures can quickly cause hypothermia to anyone immersed in the water. When the water temperature is below 60 degrees, the average submerged person could lose dexterity within minutes and be unable to accomplish simple tasks. Anyone on boats or paddlecraft should use extreme caution to avoid this threat.

A Beach Hazards Statement is issued on days when a significant number of boats and paddlecraft are expected to be out on the water and when warm air temperatures may cause people to underestimate the danger of the cold water. Paddle smart from the start. Always wear your life jacket. Be aware of wind conditions, tides, and localized currents. All boaters and paddlers are highly encouraged to contact the U.S. Coast Guard Auxiliary or U.S. Power Squadrons at https://cgaux.org/vsc/ to receive a FREE vessel check. This is a convenient, no consequence way to ensure your vessel is outfitted with all required safety equipment. Additionally, please label your paddlecraft with your contact information (IF FOUND Sticker) in the event it is found adrift on the water.


Air Quality Alert issued June 12 at 2:48AM EDT by NWS Boston/Norton MA

Non-Weather Emergency Message. Not sent to IPAWS.

Effective: Fri June 12, 2026, 2:48 AM
Expires: Fri June 12, 2026, 11:15 PM

The Rhode Island Department of Environmental Management has issued an Air Quality Alert Day for Ground Level Ozone, from 11 AM this morning to 11 PM EDT this evening. An Air Quality Alert day means that Ground Level Ozone concentrations within the region may approach or exceed unhealthy standards. For additional information, please visit the Rhode Island Department of Environmental Management website at: https://dem.ri.gov/


Friday, June 12, 2026

Weather Forecast

Sunny
96.6°F
70.5°F
82.1°F
65%
0 in
5%
0%
6.3 mph
8.6


Air Quality

AQI: 1 - Good
PM2.5: 8.9 μg/m3
PM10: 9.42 μg/m3
Carbon Monoxide: 164.04 μg/m3
Nitrogen Dioxide: 13.47 μg/m3
Sulphur Dioxide: 0.97 μg/m3
Ozone: 93.33 μg/m3

Astronomical

Sunrise: 5:07 AM
Sun Transit: 12:45 AM
Sunset: 8:23 PM
Daylight: 15 hrs 16 mins
Moonrise: 2:36 AM
Moon Transit: 10:08 AM
Moonset: 5:55 PM
Moon Phase: Waning Crescent
Moon Illumination: 2.0%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
9:38 AM - 12:08 AM

Minor Periods

5:25 PM - 6:55 PM
2:06 AM - 3:36 AM

Action Rating: 2 out of 5

Saturday, June 13, 2026

Weather Forecast

Sunny
88.3°F
67.8°F
77.5°F
50%
0 in
2%
0%
10.7 mph
9.2


Air Quality

AQI: 1 - Good
PM2.5: 4.47 μg/m3
PM10: 5.1 μg/m3
Carbon Monoxide: 129.83 μg/m3
Nitrogen Dioxide: 7.25 μg/m3
Sulphur Dioxide: 0.54 μg/m3
Ozone: 87 μg/m3

Astronomical

Sunrise: 5:07 AM
Sun Transit: 12:45 AM
Sunset: 8:23 PM
Daylight: 15 hrs 16 mins
Moonrise: 3:13 AM
Moon Transit: 11:09 AM
Moonset: 7:17 PM
Moon Phase: Waning Crescent
Moon Illumination: 0.1%

Best Times for Fishing or Hunting

Major Periods

12:44 AM - 3:14 AM
10:39 AM - 1:09 PM

Minor Periods

6:47 PM - 8:17 PM
2:43 AM - 4:13 AM

Action Rating: 3 out of 5

Sunday, June 14, 2026

Weather Forecast

Patchy rain nearby
87.8°F
61.9°F
73.8°F
55%
0.02 in
36%
0%
13 mph
8.2


Air Quality

AQI: 1 - Good
PM2.5: 5.95 μg/m3
PM10: 6.51 μg/m3
Carbon Monoxide: 130.04 μg/m3
Nitrogen Dioxide: 7.88 μg/m3
Sulphur Dioxide: 0.85 μg/m3
Ozone: 97.21 μg/m3

Astronomical

Sunrise: 5:07 AM
Sun Transit: 12:45 AM
Sunset: 8:24 PM
Daylight: 15 hrs 17 mins
Moonrise: 4:03 AM
Moon Transit: 12:15 AM
Moonset: 8:33 PM
Moon Phase: New
Moon Illumination: 0.7%

Best Times for Fishing or Hunting

Major Periods

1:48 AM - 4:18 AM
11:45 AM - 2:15 PM

Minor Periods

8:03 PM - 9:33 PM
3:33 AM - 5:03 AM

Action Rating: 5 out of 5

Monday, June 15, 2026

Weather Forecast

Partly Cloudy
81.3°F
59.6°F
70.6°F
58%
0 in
7%
0%
10.1 mph
8.9


Air Quality

AQI: 1 - Good
PM2.5: 3.88 μg/m3
PM10: 4.58 μg/m3
Carbon Monoxide: 121.6 μg/m3
Nitrogen Dioxide: 4.7 μg/m3
Sulphur Dioxide: 0.57 μg/m3
Ozone: 86.67 μg/m3

Astronomical

Sunrise: 5:07 AM
Sun Transit: 12:45 AM
Sunset: 8:24 PM
Daylight: 15 hrs 17 mins
Moonrise: 5:06 AM
Moon Transit: 1:23 PM
Moonset: 9:37 PM
Moon Phase: New
Moon Illumination: 3.8%

Best Times for Fishing or Hunting

Major Periods

2:56 AM - 5:26 AM
12:53 AM - 3:23 PM

Minor Periods

9:07 PM - 10:37 PM
4:36 AM - 6:06 AM

Action Rating: 4 out of 5

Tuesday, June 16, 2026

Weather Forecast

Sunny
77.7°F
54.4°F
67.3°F
49%
0 in
2%
0%
10.3 mph
6.1


Air Quality

AQI: 1 - Good
PM2.5: 2.02 μg/m3
PM10: 2.03 μg/m3
Carbon Monoxide: 134.67 μg/m3
Nitrogen Dioxide: 5.92 μg/m3
Sulphur Dioxide: 0.52 μg/m3
Ozone: 45.44 μg/m3

Astronomical

Sunrise: 5:07 AM
Sun Transit: 12:45 AM
Sunset: 8:25 PM
Daylight: 15 hrs 17 mins
Moonrise: 6:21 AM
Moon Transit: 2:29 PM
Moonset: 10:27 PM
Moon Phase: New
Moon Illumination: 1.0%

Best Times for Fishing or Hunting

Major Periods

4:03 AM - 6:33 AM
1:59 PM - 4:29 PM

Minor Periods

9:57 PM - 11:27 PM
5:51 AM - 7:21 AM

Action Rating: 3 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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