Water Temperature of the South Santiam River in Sweet Home, OR

Current Water Temperature

52.9°F

Measurement Time: Wednesday, August 5, 2026, 1:50 AM PDT

Temperature Locations

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Local Points of Interest

Foster Reservoir; Foster Dam; Andrew Wiley Park; Camp Koinonia

South Santiam River

Station Name: SOUTH SANTIAM RIVER NEAR FOSTER, OR
Data Source: Water Data - usgc.gov

Elevation Above Sea Level: 564 feet

Nearest Address:
42853 Green River Dr
Sweet Home, OR 97386
Linn County

GPS Coordinates: 44.4123468, -122.6886956

Nearby Water Temperatures

Middle Santiam River, Foster, OR (7.3 mi)
South Santiam River, Waterloo, OR (8.9 mi)
South Santiam River, Cascadia, OR (9.5 mi)
Quartzville Creek, Cascadia, OR (15.3 mi)
Middle Santiam River, Cascadia, OR (17.2 mi)
McKenzie River, Vida, OR (22.6 mi)
McKenzie River, Walterville, OR (24 mi)
North Fork Quartz Creek, Blue River, OR (24.3 mi)
Blue River Lake, Blue River, OR (24.5 mi)
Blue River, Blue River, OR (24.6 mi)
North Santiam River, Jefferson, OR (24.8 mi)
Blue River, Blue River, OR (24.9 mi)
North Santiam River, Mehama, OR (25.3 mi)
Camp Creek, Springfield, OR (25.5 mi)
Lookout Creek, Blue River, OR (25.5 mi)

Weather for Sweet Home, Oregon

Current Weather

65.5°F
Sunny
Sunny
63.9°F
65.5°F
46%
SE 2.2 mph
6.7 mph
65.5°F
44.3°F
0 in
0%
6 mi
1013 mbar
0.6

Five Day Weather Forecast

Smoky haze
Wed
H: 97°F
L: 60°F
Sunny
Thu
H: 95°F
L: 55°F
Sunny
Fri
H: 92°F
L: 53°F
Sunny
Sat
H: 88°F
L: 53°F
Sunny
Sun
H: 89°F
L: 50°F

Air Quality

AQI: 1 - Good
PM2.5: 34.8 μg/m3
PM10: 35.3 μg/m3
Carbon Monoxide: 259 μg/m3
Nitrogen Dioxide: 13.8 μg/m3
Sulphur Dioxide: 0.9 μg/m3
Ozone: 41 μg/m3

Astronomical

Sunrise: 6:03 AM
Sun Transit: 1:16 PM
Sunset: 8:31 PM
Daylight: 14 hrs 28 mins
Moonrise: 12:01 AM
Moon Transit: 6:22 AM
Moonset: 2:00 PM
Moon Phase: Last Quarter
Moon Illumination: 43.2%

Best Times for Fishing or Hunting

Major Periods

5:52 AM - 8:22 AM
1:48 PM - 4:18 PM

Minor Periods

1:30 PM - 3:00 PM
12:00 AM - 12:00 AM

Action Rating: 3 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 Oregon Department of Environmental Quality and the Lane Regional Air Protection Agency have issued an Air Quality Advisory, which is in effect until further notice. An Air Quality Advisory for Smoke has been issued. Wildfires burning in the region combined with forecasted conditions will cause air quality to reach unhealthy levels due to smoke at times until further notice. 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 www.lrapa.org
Wednesday, August 5, 2026

Weather Forecast

Smoky haze
96.8°F
59.7°F
77.8°F
31%
0 in
0%
0%
4.7 mph
6.1


Air Quality

AQI: 2 - Moderate
PM2.5: 40.01 μg/m3
PM10: 40.8 μg/m3
Carbon Monoxide: 271.88 μg/m3
Nitrogen Dioxide: 7.92 μg/m3
Sulphur Dioxide: 1.65 μg/m3
Ozone: 110.75 μg/m3

Astronomical

Sunrise: 6:03 AM
Sun Transit: 1:16 PM
Sunset: 8:31 PM
Daylight: 14 hrs 28 mins
Moonrise: 12:01 AM
Moon Transit: 6:22 AM
Moonset: 2:00 PM
Moon Phase: Last Quarter
Moon Illumination: 43.2%

Best Times for Fishing or Hunting

Major Periods

5:52 AM - 8:22 AM
1:48 PM - 4:18 PM

Minor Periods

1:30 PM - 3:00 PM
12:00 AM - 12:00 AM

Action Rating: 3 out of 5

Thursday, August 6, 2026

Weather Forecast

Sunny
94.7°F
55.2°F
73.4°F
38%
0 in
1%
0%
5.4 mph
5.5


Air Quality

AQI: 2 - Moderate
PM2.5: 33.94 μg/m3
PM10: 35.5 μg/m3
Carbon Monoxide: 246.33 μg/m3
Nitrogen Dioxide: 6.24 μg/m3
Sulphur Dioxide: 1.8 μg/m3
Ozone: 119.08 μg/m3

Astronomical

Sunrise: 6:04 AM
Sun Transit: 1:16 PM
Sunset: 8:29 PM
Daylight: 14 hrs 25 mins
Moonrise: 12:29 AM
Moon Transit: 7:16 AM
Moonset: 3:19 PM
Moon Phase: Last Quarter
Moon Illumination: 32.3%

Best Times for Fishing or Hunting

Major Periods

6:46 AM - 9:16 AM
2:43 PM - 5:13 PM

Minor Periods

2:49 PM - 4:19 PM
12:00 AM - 12:00 AM

Action Rating: 2 out of 5

Friday, August 7, 2026

Weather Forecast

Sunny
91.5°F
53.3°F
71.4°F
40%
0 in
1%
0%
8.3 mph
8


Air Quality

AQI: 1 - Good
PM2.5: 13.9 μg/m3
PM10: 17.02 μg/m3
Carbon Monoxide: 165.79 μg/m3
Nitrogen Dioxide: 4.5 μg/m3
Sulphur Dioxide: 0.91 μg/m3
Ozone: 76.04 μg/m3

Astronomical

Sunrise: 6:05 AM
Sun Transit: 1:16 PM
Sunset: 8:28 PM
Daylight: 14 hrs 23 mins
Moonrise: 12:06 AM
Moon Transit: 8:16 AM
Moonset: 4:37 PM
Moon Phase: Last Quarter
Moon Illumination: 22.2%

Best Times for Fishing or Hunting

Major Periods

7:46 AM - 10:16 AM
3:44 PM - 6:14 PM

Minor Periods

4:07 PM - 5:37 PM
12:00 AM - 12:00 AM

Action Rating: 2 out of 5

Saturday, August 8, 2026

Weather Forecast

Sunny
88.2°F
53.3°F
70.2°F
42%
0 in
1%
0%
9.4 mph
8


Air Quality

AQI: 1 - Good
PM2.5: 7.83 μg/m3
PM10: 10.2 μg/m3
Carbon Monoxide: 106.67 μg/m3
Nitrogen Dioxide: 3.87 μg/m3
Sulphur Dioxide: 0.75 μg/m3
Ozone: 57.54 μg/m3

Astronomical

Sunrise: 6:06 AM
Sun Transit: 1:16 PM
Sunset: 8:26 PM
Daylight: 14 hrs 20 mins
Moonrise: 12:55 AM
Moon Transit: 9:19 AM
Moonset: 5:46 PM
Moon Phase: Waning Crescent
Moon Illumination: 13.6%

Best Times for Fishing or Hunting

Major Periods

8:49 AM - 11:19 AM
4:48 PM - 7:18 PM

Minor Periods

5:16 PM - 6:46 PM
12:25 AM - 1:55 AM

Action Rating: 2 out of 5

Sunday, August 9, 2026

Weather Forecast

Sunny
88.5°F
50°F
68.5°F
50%
0 in
2%
0%
10.3 mph
8


Air Quality

AQI: 1 - Good
PM2.5: 9.37 μg/m3
PM10: 12.58 μg/m3
Carbon Monoxide: 108.17 μg/m3
Nitrogen Dioxide: 4.87 μg/m3
Sulphur Dioxide: 0.7 μg/m3
Ozone: 40.83 μg/m3

Astronomical

Sunrise: 6:07 AM
Sun Transit: 1:16 PM
Sunset: 8:25 PM
Daylight: 14 hrs 18 mins
Moonrise: 1:58 AM
Moon Transit: 10:24 AM
Moonset: 6:45 PM
Moon Phase: Waning Crescent
Moon Illumination: 6.8%

Best Times for Fishing or Hunting

Major Periods

5:53 PM - 8:23 PM
9:54 AM - 12:24 AM

Minor Periods

6:15 PM - 7:45 PM
1:28 AM - 2:58 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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