Water Temperature of the Tualatin River in Hillsboro, OR

Current Water Temperature

59.7°F

Measurement Time: Tuesday, August 4, 2026, 2:00 PM 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

76.5°F
Smoky haze
Smoky haze
71.4°F
76.6°F
33%
NNW 7.2 mph
15 mph
76.5°F
45.7°F
0 in
0%
6 mi
1011 mbar
0

Five Day Weather Forecast

Smoky haze
Tue
H: 95°F
L: 56°F
Smoky haze
Wed
H: 98°F
L: 60°F
Sunny
Thu
H: 96°F
L: 60°F
Sunny
Fri
H: 93°F
L: 57°F
Sunny
Sat
H: 88°F
L: 58°F

Air Quality

AQI: 1 - Good
PM2.5: 54.8 μg/m3
PM10: 55.6 μg/m3
Carbon Monoxide: 319 μg/m3
Nitrogen Dioxide: 9.4 μg/m3
Sulphur Dioxide: 3.4 μg/m3
Ozone: 149 μg/m3

Astronomical

Sunrise: 6:00 AM
Sun Transit: 1:18 PM
Sunset: 8:36 PM
Daylight: 14 hrs 36 mins
Moonrise: 11:00 PM
Moon Transit: 5:34 AM
Moonset: 12:48 AM
Moon Phase: Last Quarter
Moon Illumination: 54.6%

Best Times for Fishing or Hunting

Major Periods

5:04 AM - 7:34 AM
12:56 AM - 3:26 PM

Minor Periods

10:30 PM - 12:00 PM
12:18 AM - 1:48 PM

Action Rating: 2 out of 5

Air Quality Alert issued August 4 at 11:53AM PDT by NWS Portland OR

Effective: Tue August 4, 2026, 11:53 AM
Expires: Wed August 5, 2026, 12:00 PM

The Southwest Clean Air Agency has continued an Air Quality Advisory, which is in effect until 11 AM PDT Thursday. An Air Quality Advisory for Smoke and Ozone remains in effect. Wildfires burning in the region combined with forecasted conditions will cause air quality to reach unhealthy levels due to smoke and ozone at times through 11 AM PDT Thursday. 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.swcleanair.gov
Tuesday, August 4, 2026

Weather Forecast

Smoky haze
95°F
55.8°F
75.2°F
40%
0 in
1%
0%
9.4 mph
3.1


Air Quality

AQI: 3 - Unhealthy for Sensitive Groups
PM2.5: 54.36 μg/m3
PM10: 55.73 μg/m3
Carbon Monoxide: 275.33 μg/m3
Nitrogen Dioxide: 8.52 μg/m3
Sulphur Dioxide: 2.64 μg/m3
Ozone: 120.21 μg/m3

Astronomical

Sunrise: 6:00 AM
Sun Transit: 1:18 PM
Sunset: 8:36 PM
Daylight: 14 hrs 36 mins
Moonrise: 11:00 PM
Moon Transit: 5:34 AM
Moonset: 12:48 AM
Moon Phase: Last Quarter
Moon Illumination: 54.6%

Best Times for Fishing or Hunting

Major Periods

5:04 AM - 7:34 AM
12:56 AM - 3:26 PM

Minor Periods

10:30 PM - 12:00 PM
12:18 AM - 1:48 PM

Action Rating: 2 out of 5

Wednesday, August 5, 2026

Weather Forecast

Smoky haze
97.5°F
59.7°F
77.6°F
38%
0 in
1%
0%
7.2 mph
2


Air Quality

AQI: 3 - Unhealthy for Sensitive Groups
PM2.5: 51.43 μg/m3
PM10: 52.35 μg/m3
Carbon Monoxide: 294.08 μg/m3
Nitrogen Dioxide: 8.38 μg/m3
Sulphur Dioxide: 3.23 μg/m3
Ozone: 135.58 μg/m3

Astronomical

Sunrise: 6:01 AM
Sun Transit: 1:17 PM
Sunset: 8:35 PM
Daylight: 14 hrs 34 mins
Moonrise: 11:27 PM
Moon Transit: 6:24 AM
Moonset: 2:05 PM
Moon Phase: Last Quarter
Moon Illumination: 43.2%

Best Times for Fishing or Hunting

Major Periods

5:54 AM - 8:24 AM
1:46 PM - 4:16 PM

Minor Periods

12:00 AM - 12:00 AM
1:35 PM - 3:05 PM

Action Rating: 3 out of 5

Thursday, August 6, 2026

Weather Forecast

Sunny
96.2°F
60.2°F
76.5°F
37%
0 in
1%
0%
9.2 mph
5.7


Air Quality

AQI: 2 - Moderate
PM2.5: 18.9 μg/m3
PM10: 20.6 μg/m3
Carbon Monoxide: 239.63 μg/m3
Nitrogen Dioxide: 8.21 μg/m3
Sulphur Dioxide: 1.32 μg/m3
Ozone: 88.75 μg/m3

Astronomical

Sunrise: 6:02 AM
Sun Transit: 1:17 PM
Sunset: 8:33 PM
Daylight: 14 hrs 31 mins
Moonrise: 12:27 AM
Moon Transit: 7:18 AM
Moonset: 3:25 PM
Moon Phase: Last Quarter
Moon Illumination: 32.3%

Best Times for Fishing or Hunting

Major Periods

6:48 AM - 9:18 AM
2:42 PM - 5:12 PM

Minor Periods

2:55 PM - 4:25 PM
12:00 AM - 12:00 AM

Action Rating: 2 out of 5

Friday, August 7, 2026

Weather Forecast

Sunny
93°F
56.7°F
73.4°F
37%
0 in
1%
0%
10.5 mph
8


Air Quality

AQI: 1 - Good
PM2.5: 11.17 μg/m3
PM10: 14.15 μg/m3
Carbon Monoxide: 171.88 μg/m3
Nitrogen Dioxide: 6.95 μg/m3
Sulphur Dioxide: 0.9 μg/m3
Ozone: 67.92 μg/m3

Astronomical

Sunrise: 6:03 AM
Sun Transit: 1:17 PM
Sunset: 8:32 PM
Daylight: 14 hrs 28 mins
Moonrise: 12:03 AM
Moon Transit: 8:17 AM
Moonset: 4:43 PM
Moon Phase: Last Quarter
Moon Illumination: 22.2%

Best Times for Fishing or Hunting

Major Periods

7:47 AM - 10:17 AM
3:43 PM - 6:13 PM

Minor Periods

4:13 PM - 5:43 PM
12:00 AM - 12:00 AM

Action Rating: 2 out of 5

Saturday, August 8, 2026

Weather Forecast

Sunny
87.9°F
57.8°F
71.2°F
42%
0 in
1%
0%
11.4 mph
8


Air Quality

AQI: 1 - Good
PM2.5: 8.64 μg/m3
PM10: 11.15 μg/m3
Carbon Monoxide: 103 μg/m3
Nitrogen Dioxide: 4.98 μg/m3
Sulphur Dioxide: 0.88 μg/m3
Ozone: 59.46 μg/m3

Astronomical

Sunrise: 6:04 AM
Sun Transit: 1:17 PM
Sunset: 8:30 PM
Daylight: 14 hrs 26 mins
Moonrise: 12:51 AM
Moon Transit: 9:20 AM
Moonset: 5:53 PM
Moon Phase: Waning Crescent
Moon Illumination: 13.6%

Best Times for Fishing or Hunting

Major Periods

8:50 AM - 11:20 AM
4:47 PM - 7:17 PM

Minor Periods

5:23 PM - 6:53 PM
12:21 AM - 1:51 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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