Water Temperature of the Tualatin River in West Linn, OR

Current Water Temperature

73.8°F

Measurement Time: Thursday, July 30, 2026, 9:00 PM PDT

Temperature Locations

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Local Points of Interest

Oswego Dam

Tualatin River

Station Name: TUALATIN RIVER AT OSWEGO DAM, NEAR WEST LINN, OR
Data Source: Water Data - usgc.gov

Elevation Above Sea Level: 151 feet

Nearest Address:
967 SW Borland Rd
West Linn, OR 97068
Clackamas County

GPS Coordinates: 45.35650877, -122.6850937

Nearby Water Temperatures

Fanno Creek, Tigard, OR (4.7 mi)
Clackamas River, Oregon City, OR (5.5 mi)
Johnson Creek, Milwaukie, OR (7 mi)
Crystal Springs Creek, Portland, OR (8.4 mi)
Fanno Creek, Beaverton, OR (8.4 mi)
Chicken Creek, Sherwood, OR (8.5 mi)
Tualatin River, Beaverton, OR (10.7 mi)
Willamette River, Portland, OR (11.1 mi)
Johnson Creek, Portland, OR (12 mi)
Kelley Creek, Portland, OR (12.3 mi)
Beaverton Creek, Beaverton, OR (12.8 mi)
Willamette River, West Linn, OR (14.3 mi)
Johnson Creek, Gresham, OR (15.6 mi)
Rock Creek, Hillsboro, OR (16 mi)
Clackamas River, Estacada, OR (16.6 mi)

Weather for West Linn, Oregon

Current Weather

60.1°F
Clear
Clear
59°F
60.1°F
65%
NNE 2.2 mph
2.3 mph
60.1°F
48.2°F
0 in
0%
6 mi
1020 mbar
0

Five Day Weather Forecast

Sunny
Fri
H: 90°F
L: 58°F
Sunny
Sat
H: 74°F
L: 55°F
Sunny
Sun
H: 80°F
L: 49°F
Sunny
Mon
H: 83°F
L: 49°F
Sunny
Tue
H: 92°F
L: 52°F

Air Quality

AQI: 1 - Good
PM2.5: 6.9 μg/m3
PM10: 8.7 μg/m3
Carbon Monoxide: 112 μg/m3
Nitrogen Dioxide: 12.6 μg/m3
Sulphur Dioxide: 0.7 μg/m3
Ozone: 23 μg/m3

Astronomical

Sunrise: 5:54 AM
Sun Transit: 1:17 PM
Sunset: 8:40 PM
Daylight: 14 hrs 46 mins
Moonrise: 9:43 PM
Moon Transit: 2:37 AM
Moonset: 8:02 AM
Moon Phase: Full
Moon Illumination: 92.0%

Best Times for Fishing or Hunting

Major Periods

2:07 AM - 4:37 AM
10:00 AM - 12:30 AM

Minor Periods

9:13 PM - 10:43 PM
7:32 AM - 9:02 AM

Action Rating: 3 out of 5

Air Quality Alert issued July 30 at 11:59AM PDT by NWS Portland OR

Effective: Thu July 30, 2026, 11:59 AM
Expires: Fri July 31, 2026, 12:00 PM

The Oregon Department of Environmental Quality, and the Lane Regional Air Protection Agency has continued an Air Quality Advisory, which is IN EFFECT UNTIL NOON PDT FRIDAY. An Air Quality Advisory for Smoke remains in effect. Wildfires burning in the region combined with forecasted conditions will cause air quality to reach unhealthy levels at times through Friday at noon. Pollutants in smoke can cause burning eyes, runny nose, aggravate heart and lung diseases, and aggravate other serious health problems. Limit outdoor activities and keep children indoors if it is smoky. Please follow medical advice if you have a heart or lung condition. More information about air quality can be found at: www.oregon.gov/DEQ
Friday, July 31, 2026

Weather Forecast

Sunny
90°F
57.9°F
73.3°F
48%
0 in
1%
0%
5.6 mph
8.5


Air Quality

AQI: 1 - Good
PM2.5: 6.23 μg/m3
PM10: 7.81 μg/m3
Carbon Monoxide: 109.33 μg/m3
Nitrogen Dioxide: 5.55 μg/m3
Sulphur Dioxide: 0.7 μg/m3
Ozone: 52.92 μg/m3

Astronomical

Sunrise: 5:54 AM
Sun Transit: 1:17 PM
Sunset: 8:40 PM
Daylight: 14 hrs 46 mins
Moonrise: 9:43 PM
Moon Transit: 2:37 AM
Moonset: 8:02 AM
Moon Phase: Full
Moon Illumination: 92.0%

Best Times for Fishing or Hunting

Major Periods

2:07 AM - 4:37 AM
10:00 AM - 12:30 AM

Minor Periods

9:13 PM - 10:43 PM
7:32 AM - 9:02 AM

Action Rating: 3 out of 5

Saturday, August 1, 2026

Weather Forecast

Sunny
74.4°F
54.5°F
64.6°F
64%
0.01 in
17%
0%
9.4 mph
6


Air Quality

AQI: 1 - Good
PM2.5: 4.34 μg/m3
PM10: 6.1 μg/m3
Carbon Monoxide: 97 μg/m3
Nitrogen Dioxide: 2.5 μg/m3
Sulphur Dioxide: 0.7 μg/m3
Ozone: 39.13 μg/m3

Astronomical

Sunrise: 5:55 AM
Sun Transit: 1:17 PM
Sunset: 8:38 PM
Daylight: 14 hrs 43 mins
Moonrise: 10:00 PM
Moon Transit: 3:21 AM
Moonset: 9:11 AM
Moon Phase: Waning Gibbous
Moon Illumination: 84.9%

Best Times for Fishing or Hunting

Major Periods

2:51 AM - 5:21 AM
10:43 AM - 1:13 PM

Minor Periods

9:30 PM - 11:00 PM
8:41 AM - 10:11 AM

Action Rating: 2 out of 5

Sunday, August 2, 2026

Weather Forecast

Sunny
79.6°F
49.1°F
63.3°F
58%
0 in
3%
0%
11.4 mph
7.5


Air Quality

AQI: 1 - Good
PM2.5: 5.87 μg/m3
PM10: 8.36 μg/m3
Carbon Monoxide: 96.46 μg/m3
Nitrogen Dioxide: 3.5 μg/m3
Sulphur Dioxide: 0.9 μg/m3
Ozone: 47.46 μg/m3

Astronomical

Sunrise: 5:56 AM
Sun Transit: 1:17 PM
Sunset: 8:37 PM
Daylight: 14 hrs 41 mins
Moonrise: 10:18 PM
Moon Transit: 3:50 PM
Moonset: 10:21 AM
Moon Phase: Waning Gibbous
Moon Illumination: 75.9%

Best Times for Fishing or Hunting

Major Periods

11:26 AM - 1:56 PM
3:20 PM - 5:50 PM

Minor Periods

9:48 PM - 11:18 PM
9:51 AM - 11:21 AM

Action Rating: 2 out of 5

Monday, August 3, 2026

Weather Forecast

Sunny
83.2°F
48.8°F
65°F
55%
0 in
2%
0%
9.8 mph
7.1


Air Quality

AQI: 1 - Good
PM2.5: 5.42 μg/m3
PM10: 6.41 μg/m3
Carbon Monoxide: 115.52 μg/m3
Nitrogen Dioxide: 4.8 μg/m3
Sulphur Dioxide: 1.04 μg/m3
Ozone: 63.63 μg/m3

Astronomical

Sunrise: 5:58 AM
Sun Transit: 1:16 PM
Sunset: 8:36 PM
Daylight: 14 hrs 38 mins
Moonrise: 10:37 PM
Moon Transit: 12:00 AM
Moonset: 11:32 AM
Moon Phase: Waning Gibbous
Moon Illumination: 65.6%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
12:10 AM - 2:40 PM

Minor Periods

10:07 PM - 11:37 PM
11:02 AM - 12:32 AM

Action Rating: 2 out of 5

Tuesday, August 4, 2026

Weather Forecast

Sunny
91.5°F
52.2°F
71.4°F
45%
0 in
1%
0%
9.6 mph
8


Air Quality

AQI: 1 - Good
PM2.5: 14.43 μg/m3
PM10: 15.63 μg/m3
Carbon Monoxide: 196 μg/m3
Nitrogen Dioxide: 11.5 μg/m3
Sulphur Dioxide: 1.2 μg/m3
Ozone: 47.5 μg/m3

Astronomical

Sunrise: 5:59 AM
Sun Transit: 1:16 PM
Sunset: 8:34 PM
Daylight: 14 hrs 36 mins
Moonrise: 10:59 PM
Moon Transit: 5:33 AM
Moonset: 12:46 AM
Moon Phase: Last Quarter
Moon Illumination: 54.6%

Best Times for Fishing or Hunting

Major Periods

5:03 AM - 7:33 AM
12:57 AM - 3:27 PM

Minor Periods

10:29 PM - 11:59 PM
12:16 AM - 1:46 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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