Water Temperature of the Arkansas River in Portland, CO

Current Water Temperature

79.2°F

Measurement Time: Monday, July 20, 2026, 3:30 PM MDT

Temperature Locations

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Local Points of Interest

Florence, CO; Penrose, CO

Arkansas River

Station Name: ARKANSAS RIVER AT PORTLAND, CO.
Data Source: Water Data - usgc.gov

Elevation Above Sea Level: 5,043 feet

Nearest Address:
State Hwy 120
Portland, CO 81226
Fremont County

GPS Coordinates: 38.38833418, -105.0160961

Nearby Water Temperatures

Arkansas River, Cañon City, CO (13.4 mi)
Fountain Creek, Pueblo, CO (23.5 mi)
Fountain Creek, Fountain, CO (23.8 mi)
Arkansas River, Pueblo, CO (24.1 mi)
Arkansas River, Pueblo, CO (24.3 mi)
Arkansas River, Avondale, CO (34.8 mi)
Arkansas River, Manzanola, CO (62.6 mi)
South Platte River, Roxborough Park, CO (71.4 mi)
Arkansas River, Rocky Ford, CO (75.6 mi)
Arkansas River, Granite, CO (81.1 mi)
South Platte River, Englewood, CO (88.2 mi)
Halfmoon Creek, Twin Lakes, CO (91.7 mi)
Purgatoire River, Trinchera, CO (93.7 mi)
Purgatoire River, Kim, CO (94 mi)
South Platte River, Denver, CO (98.4 mi)

Weather for Portland, Colorado

Current Weather

71.6°F
Clear
Clear
63.7°F
73.9°F
30%
NNW 2.2 mph
2.3 mph
71.6°F
38.9°F
0 in
3%
6 mi
1012 mbar
0

Five Day Weather Forecast

Sunny
Mon
H: 97°F
L: 62°F
Sunny
Tue
H: 95°F
L: 64°F
Sunny
Wed
H: 94°F
L: 63°F
Sunny
Thu
H: 94°F
L: 60°F
Sunny
Fri
H: 99°F
L: 62°F

Air Quality

AQI: 1 - Good
PM2.5: 8.7 μg/m3
PM10: 11.9 μg/m3
Carbon Monoxide: 114 μg/m3
Nitrogen Dioxide: 4.8 μg/m3
Sulphur Dioxide: 0.4 μg/m3
Ozone: 87 μg/m3

Astronomical

Sunrise: 5:52 AM
Sun Transit: 1:06 PM
Sunset: 8:20 PM
Daylight: 14 hrs 28 mins
Moonrise: 12:53 AM
Moon Transit: 6:24 PM
Moonset: 12:23 AM
Moon Phase: Waxing Crescent
Moon Illumination: 32.7%

Best Times for Fishing or Hunting

Major Periods

3:28 AM - 5:58 AM
5:54 PM - 8:24 PM

Minor Periods

12:23 AM - 1:53 PM
12:00 AM - 12:00 AM

Action Rating: 4 out of 5

Air Quality Alert issued July 20 at 4:10PM MDT by NWS Pueblo CO

Effective: Mon July 20, 2026, 4:10 PM
Expires: Tue July 21, 2026, 9:00 AM

The Colorado Department of Public Health and Environment has issued the following... WHAT...Air Quality Health Advisory for Wildfire Smoke. WHERE...Custer and southwestern Pueblo Counties. Locations include, but are not limited to Westcliffe, Rye, Beulah, and Colorado City. WHEN...900 AM Monday July 20 to 900 AM Tuesday July 21 IMPACTS...Moderate to heavy smoke from the Aspen Acres Fire is possible throughout the advisory area through at least Tuesday morning. HEALTH INFORMATION...Public Health Recommendations: Increasing likelihood of respiratory symptoms in sensitive individuals, aggravation of heart or lung disease and premature mortality in people with cardiopulmonary disease and older adults. People with heart or lung disease, older adults, and children should reduce prolonged or heavy exertion.


Air Quality Alert issued July 20 at 9:10AM MDT by NWS Pueblo CO

Effective: Mon July 20, 2026, 9:10 AM
Expires: Tue July 21, 2026, 9:00 AM

The Colorado Department of Public Health and Environment has issued the following... WHAT...Air Quality Health Advisory for Wildfire Smoke. WHERE...Custer and southwestern Pueblo Counties. Locations include, but are not limited to Westcliffe, Rye, Beulah, and Colorado City. WHEN...900 AM Monday July 20 to 900 AM Tuesday July 21 IMPACTS...Moderate to heavy smoke from the Aspen Acres Fire is possible throughout the advisory area through at least Tuesday morning. HEALTH INFORMATION...Public Health Recommendations: Increasing likelihood of respiratory symptoms in sensitive individuals, aggravation of heart or lung disease and premature mortality in people with cardiopulmonary disease and older adults. People with heart or lung disease, older adults, and children should reduce prolonged or heavy exertion.


Heat Advisory issued July 20 at 12:53PM MDT until July 20 at 8:00PM MDT by NWS Pueblo CO

Effective: Mon July 20, 2026, 12:53 PM
Expires: Mon July 20, 2026, 8:00 PM

* WHAT...Maximum temperatures ranging between 95 to 100 degrees are anticipated. * WHERE...Eastern Fremont county and El Paso County below 7500 feet. * WHEN...Until 8 PM MDT this evening. * IMPACTS...Hot temperatures 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.


Monday, July 20, 2026

Weather Forecast

Sunny
96.5°F
62.1°F
79.4°F
29%
0 in
0%
0%
16.8 mph
12.4


Air Quality

AQI: 1 - Good
PM2.5: 8.3 μg/m3
PM10: 11.2 μg/m3
Carbon Monoxide: 111.46 μg/m3
Nitrogen Dioxide: 4.85 μg/m3
Sulphur Dioxide: 0.53 μg/m3
Ozone: 92.42 μg/m3

Astronomical

Sunrise: 5:52 AM
Sun Transit: 1:06 PM
Sunset: 8:20 PM
Daylight: 14 hrs 28 mins
Moonrise: 12:53 AM
Moon Transit: 6:24 PM
Moonset: 12:23 AM
Moon Phase: Waxing Crescent
Moon Illumination: 32.7%

Best Times for Fishing or Hunting

Major Periods

3:28 AM - 5:58 AM
5:54 PM - 8:24 PM

Minor Periods

12:23 AM - 1:53 PM
12:00 AM - 12:00 AM

Action Rating: 4 out of 5

Tuesday, July 21, 2026

Weather Forecast

Sunny
95°F
63.5°F
78.9°F
32%
0 in
17%
0%
23.9 mph
12.1


Air Quality

AQI: 1 - Good
PM2.5: 9.08 μg/m3
PM10: 12.85 μg/m3
Carbon Monoxide: 110.04 μg/m3
Nitrogen Dioxide: 4.64 μg/m3
Sulphur Dioxide: 0.54 μg/m3
Ozone: 90.21 μg/m3

Astronomical

Sunrise: 5:53 AM
Sun Transit: 1:06 PM
Sunset: 8:20 PM
Daylight: 14 hrs 27 mins
Moonrise: 1:56 PM
Moon Transit: 7:08 PM
Moonset: 12:47 AM
Moon Phase: First Quarter
Moon Illumination: 43.7%

Best Times for Fishing or Hunting

Major Periods

4:12 AM - 6:42 AM
6:38 PM - 9:08 PM

Minor Periods

1:26 PM - 2:56 PM
12:00 AM - 12:00 AM

Action Rating: 2 out of 5

Wednesday, July 22, 2026

Weather Forecast

Sunny
94°F
62.9°F
78.7°F
36%
0.09 in
57%
0%
10.3 mph
9.8


Air Quality

AQI: 1 - Good
PM2.5: 11 μg/m3
PM10: 15.24 μg/m3
Carbon Monoxide: 127.29 μg/m3
Nitrogen Dioxide: 5.43 μg/m3
Sulphur Dioxide: 0.63 μg/m3
Ozone: 85.42 μg/m3

Astronomical

Sunrise: 5:54 AM
Sun Transit: 1:06 PM
Sunset: 8:19 PM
Daylight: 14 hrs 25 mins
Moonrise: 2:58 PM
Moon Transit: 7:54 PM
Moonset: 12:14 AM
Moon Phase: First Quarter
Moon Illumination: 55.0%

Best Times for Fishing or Hunting

Major Periods

4:57 AM - 7:27 AM
7:24 PM - 9:54 PM

Minor Periods

2:28 PM - 3:58 PM
12:00 AM - 12:00 AM

Action Rating: 2 out of 5

Thursday, July 23, 2026

Weather Forecast

Sunny
94.2°F
60.2°F
75.3°F
48%
0.07 in
57%
0%
15 mph
11.2


Air Quality

AQI: 1 - Good
PM2.5: 9.8 μg/m3
PM10: 10.09 μg/m3
Carbon Monoxide: 115.29 μg/m3
Nitrogen Dioxide: 7.41 μg/m3
Sulphur Dioxide: 0.48 μg/m3
Ozone: 75.21 μg/m3

Astronomical

Sunrise: 5:55 AM
Sun Transit: 1:06 PM
Sunset: 8:18 PM
Daylight: 14 hrs 23 mins
Moonrise: 4:00 PM
Moon Transit: 8:42 PM
Moonset: 12:45 AM
Moon Phase: First Quarter
Moon Illumination: 66.1%

Best Times for Fishing or Hunting

Major Periods

5:43 AM - 8:13 AM
8:12 PM - 10:42 PM

Minor Periods

3:30 PM - 5:00 PM
12:15 AM - 1:45 AM

Action Rating: 4 out of 5

Friday, July 24, 2026

Weather Forecast

Sunny
99°F
62.1°F
79°F
40%
0.09 in
57%
0%
15.4 mph
10.7


Air Quality

AQI: 1 - Good
PM2.5: 11.35 μg/m3
PM10: 11.84 μg/m3
Carbon Monoxide: 139.67 μg/m3
Nitrogen Dioxide: 6.06 μg/m3
Sulphur Dioxide: 0.48 μg/m3
Ozone: 87.75 μg/m3

Astronomical

Sunrise: 5:56 AM
Sun Transit: 1:06 PM
Sunset: 8:17 PM
Daylight: 14 hrs 22 mins
Moonrise: 5:00 PM
Moon Transit: 9:32 PM
Moonset: 1:20 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 76.3%

Best Times for Fishing or Hunting

Major Periods

6:32 AM - 9:02 AM
9:02 PM - 11:32 PM

Minor Periods

4:30 PM - 6:00 PM
12:50 AM - 2:20 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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