Water Temperature of the Tualatin River in Hillsboro, OR

Current Water Temperature

56.8°F

Measurement Time: Friday, May 1, 2026, 5:00 AM PDT

Temperature Locations

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Local Points of Interest

Jackson Bottom Wetlands; Jackson Slough

Tualatin River

Station Name: TUALATIN RIVER AT HWY 219 NEAR HILLSBORO, OR
Data Source: Water Data - usgc.gov

Elevation Above Sea Level: 135 feet

Nearest Address:
2600 SW Hillsboro Hwy
Hillsboro, OR 97123
Washington County

GPS Coordinates: 45.50011635, -122.9912157

Nearby Water Temperatures

Rock Creek, Hillsboro, OR (2.8 mi)
Gales Creek, Forest Grove, OR (6.1 mi)
Tualatin River, Dilley, OR (6.7 mi)
Beaverton Creek, Beaverton, OR (6.7 mi)
Wapato Creek, Gaston, OR (7.7 mi)
Tualatin River, Beaverton, OR (8.3 mi)
Scoggins Creek, Gaston, OR (8.5 mi)
Fanno Creek, Beaverton, OR (10.1 mi)
Scoggins Creek, Gaston, OR (10.3 mi)
Chicken Creek, Sherwood, OR (10.8 mi)
Fanno Creek, Tigard, OR (13.3 mi)
East Fork Dairy Creek, Meacham Corner, OR (13.9 mi)
Willamette River, West Linn, OR (15 mi)
Willamette River, Portland, OR (15.6 mi)
Crystal Springs Creek, Portland, OR (17 mi)

Weather for Hillsboro, Oregon

Current Weather

70°F
Sunny
Sunny
70°F
75.2°F
41%
ESE 2.2 mph
6.7 mph
72.9°F
53°F
0 in
0%
9 mi
1016 mbar
4.3

Five Day Weather Forecast

Sunny
Fri
H: 75°F
L: 50°F
Partly Cloudy
Sat
H: 76°F
L: 49°F
Sunny
Sun
H: 84°F
L: 52°F
Partly Cloudy
Mon
H: 75°F
L: 53°F
Sunny
Tue
H: 75°F
L: 50°F

Air Quality

AQI: 1 - Good
PM2.5: 9.25 μg/m3
PM10: 11.55 μg/m3
Carbon Monoxide: 162.85 μg/m3
Nitrogen Dioxide: 14.45 μg/m3
Sulphur Dioxide: 2.15 μg/m3
Ozone: 47 μg/m3

Astronomical

Sunrise: 6:00 AM
Sun Transit: 1:09 PM
Sunset: 8:19 PM
Daylight: 14 hrs 20 mins
Moonrise: 8:57 PM
Moon Transit: 12:45 AM
Moonset: 5:33 AM
Moon Phase: Full
Moon Illumination: 100.0%

Best Times for Fishing or Hunting

Major Periods

12:15 AM - 2:45 AM
8:05 AM - 10:35 AM

Minor Periods

8:27 PM - 9:57 PM
5:03 AM - 6:33 AM

Action Rating: 4 out of 5

Heat Advisory issued May 1 at 10:37AM PDT until May 3 at 11:00PM PDT by NWS Portland OR

Effective: Fri May 1, 2026, 10:37 AM
Expires: Sat May 2, 2026, 5:00 AM

* WHAT...Temperatures up to 90 degrees F expected. Significant cooling expected overnight. * WHERE...Greater Vancouver Metro, Lower Columbia River and Cowlitz River Valleys, Inner Portland Metro, and East Portland Metro. * WHEN...From 8 AM to 11 PM PDT Sunday. * IMPACTS...Hot temperatures may cause heat illnesses. * ADDITIONAL DETAILS...There is around 5% chance of high temperatures of 95 degrees or greater in urban areas around the Portland-Metro area. Overall Moderate HeatRisk with relieving cooling temperatures overnight. Highs will be near record breaking temperatures for this time of year.

Drink plenty of fluids, stay in a cool place during the heat of the day, stay out of the sunshine, and check up on relatives and neighbors. For those without air conditioning, use fans to keep air moving. Keeps windows closed during the day and open at night. 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. Moderate HeatRisk affects those who are sensitive to heat, especially those without cooling/hydration, and some health systems and industries.
Friday, May 1, 2026

Weather Forecast

Sunny
74.7°F
49.8°F
60.5°F
67%
0 in
0%
0%
7.4 mph
5.3


Air Quality

AQI: 1 - Good
PM2.5: 10.41 μg/m3
PM10: 12.46 μg/m3
Carbon Monoxide: 193.57 μg/m3
Nitrogen Dioxide: 14.67 μg/m3
Sulphur Dioxide: 2.27 μg/m3
Ozone: 57.4 μg/m3

Astronomical

Sunrise: 6:00 AM
Sun Transit: 1:09 PM
Sunset: 8:19 PM
Daylight: 14 hrs 20 mins
Moonrise: 8:57 PM
Moon Transit: 12:45 AM
Moonset: 5:33 AM
Moon Phase: Full
Moon Illumination: 100.0%

Best Times for Fishing or Hunting

Major Periods

12:15 AM - 2:45 AM
8:05 AM - 10:35 AM

Minor Periods

8:27 PM - 9:57 PM
5:03 AM - 6:33 AM

Action Rating: 4 out of 5

Saturday, May 2, 2026

Weather Forecast

Partly Cloudy
75.7°F
48.7°F
60.8°F
67%
0 in
0%
0%
4.9 mph
5.5


Air Quality

AQI: 1 - Good
PM2.5: 9.95 μg/m3
PM10: 13.34 μg/m3
Carbon Monoxide: 161.17 μg/m3
Nitrogen Dioxide: 8.61 μg/m3
Sulphur Dioxide: 2.27 μg/m3
Ozone: 66.52 μg/m3

Astronomical

Sunrise: 5:58 AM
Sun Transit: 1:08 PM
Sunset: 8:21 PM
Daylight: 14 hrs 22 mins
Moonrise: 10:04 PM
Moon Transit: 1:31 AM
Moonset: 5:58 AM
Moon Phase: Full
Moon Illumination: 98.4%

Best Times for Fishing or Hunting

Major Periods

1:01 AM - 3:31 AM
8:52 AM - 11:22 AM

Minor Periods

9:34 PM - 11:04 PM
5:28 AM - 6:58 AM

Action Rating: 3 out of 5

Sunday, May 3, 2026

Weather Forecast

Sunny
83.9°F
52.1°F
66.9°F
65%
0 in
0%
0%
5.1 mph
6.3


Air Quality

AQI: 1 - Good
PM2.5: 11.1 μg/m3
PM10: 12.84 μg/m3
Carbon Monoxide: 235.69 μg/m3
Nitrogen Dioxide: 13.61 μg/m3
Sulphur Dioxide: 2.9 μg/m3
Ozone: 73.32 μg/m3

Astronomical

Sunrise: 5:57 AM
Sun Transit: 1:08 PM
Sunset: 8:22 PM
Daylight: 14 hrs 25 mins
Moonrise: 11:08 PM
Moon Transit: 2:19 AM
Moonset: 6:29 AM
Moon Phase: Full
Moon Illumination: 94.4%

Best Times for Fishing or Hunting

Major Periods

1:49 AM - 4:19 AM
9:41 AM - 12:11 AM

Minor Periods

12:00 AM - 12:00 AM
5:59 AM - 7:29 AM

Action Rating: 4 out of 5

Monday, May 4, 2026

Weather Forecast

Partly Cloudy
75.2°F
53.4°F
63.3°F
72%
0 in
0%
0%
8.3 mph
6.6


Air Quality

AQI: 1 - Good
PM2.5: 9.68 μg/m3
PM10: 11.72 μg/m3
Carbon Monoxide: 175.56 μg/m3
Nitrogen Dioxide: 11.87 μg/m3
Sulphur Dioxide: 2.11 μg/m3
Ozone: 69.36 μg/m3

Astronomical

Sunrise: 5:55 AM
Sun Transit: 1:08 PM
Sunset: 8:23 PM
Daylight: 14 hrs 28 mins
Moonrise: 12:08 AM
Moon Transit: 3:09 AM
Moonset: 7:08 AM
Moon Phase: Waning Gibbous
Moon Illumination: 88.0%

Best Times for Fishing or Hunting

Major Periods

2:39 AM - 5:09 AM
10:31 AM - 1:01 PM

Minor Periods

6:38 AM - 8:08 AM
12:00 AM - 12:00 AM

Action Rating: 2 out of 5

Tuesday, May 5, 2026

Weather Forecast

Sunny
74.9°F
49.9°F
60.7°F
70%
0 in
0%
0%
3.6 mph
7.2


Air Quality

AQI: 1 - Good
PM2.5: 7.23 μg/m3
PM10: 9.03 μg/m3
Carbon Monoxide: 155.82 μg/m3
Nitrogen Dioxide: 5.4 μg/m3
Sulphur Dioxide: 1.73 μg/m3
Ozone: 74.77 μg/m3

Astronomical

Sunrise: 5:54 AM
Sun Transit: 1:08 PM
Sunset: 8:24 PM
Daylight: 14 hrs 30 mins
Moonrise: 12:05 AM
Moon Transit: 4:00 AM
Moonset: 7:56 AM
Moon Phase: Waning Gibbous
Moon Illumination: 79.8%

Best Times for Fishing or Hunting

Major Periods

3:30 AM - 6:00 AM
11:23 AM - 1:53 PM

Minor Periods

7:26 AM - 8:56 AM
12:00 AM - 12:00 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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