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

Air Quality Alert issued August 6 at 10:10AM MDT by NWS Pueblo CO

Effective: Thu August 6, 2026, 10:10 AM
Expires: Fri August 7, 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...Moffat, Routt, Grand, Rio Blanco, Eagle, Summit, Garfield, Pitkin, Mesa, Delta, Gunnison, Montrose, Ouray, San Miguel, Dolores, Montezuma, La Plata, Saguache, San Juan, Hinsdale, Mineral, Archuleta, Morgan, Elbert, Huerfano, Rio Grande, Alamosa, Costilla, Conejos, Chaffee, Jackson, Gilpin, Clear Creek, Lake, Park, Teller, Fremont and Custer Counties. Locations include, but are not limited to Craig, Steamboat Springs, Granby, Hot Sulphur Springs, Kremmling, Meeker, Rangely, Eagle, Vail, Breckenridge, Glenwood Springs, Aspen, Grand Junction, Delta, Gunnison, Montrose, Nucla, Ouray, Telluride, Dove Creek, Cortez, Durango, Hermosa, Honeyville, Rockwood, Saguache, Silverton, Lake City, Creede, Pagosa Springs, Fort Morgan, Kiowa, Walsenburg, Del Norte, South Fork, Alamosa, San Luis, Conejos, Buena Vista, Salida, Walden, Central City, Georgetown, Leadville, Fairplay, Cripple Creek, Canon City and Westcliffe. WHEN...900 AM Thursday August 06 to 900 AM Friday August 07 IMPACTS...Areas of moderate to heavy smoke, from in-state and out- of-state wildfires, will be possible across the advisory area through at least Friday morning. HEALTH INFORMATION...Public Health Recommendations: If smoke is thick or becomes thick in your neighborhood you may want to remain indoors. This is especially true for those with heart disease, respiratory illnesses, the very young, and older adults. Consider limiting outdoor activity when moderate to heavy smoke is present. Consider relocating temporarily if smoke is present indoors and is making you ill. If visibility is less than 5 miles in smoke in your neighborhood, smoke has reached levels that are unhealthy.

Fire Weather Watch issued August 6 at 12:21AM MDT until August 7 at 8:00PM MDT by NWS Pueblo CO

Effective: Thu August 6, 2026, 12:21 AM
Expires: Thu August 6, 2026, 4:30 PM

The National Weather Service in Pueblo has issued a Fire Weather Watch for gusty winds and low relative humidity, which is in effect from Friday afternoon through Friday evening. * AFFECTED AREA...Fire Weather Zones 222 and 228. * WINDS...East 10 to 15 mph with gusts up to 30 mph. * RELATIVE HUMIDITY...As low as 10 percent. * IMPACTS...Fires will catch and spread quickly. Exercise extreme caution with any outdoor burning.

A Fire Weather Watch means that critical fire weather conditions are forecast to occur. Listen for later forecasts and possible Red Flag Warnings.

Red Flag Warning issued August 6 at 12:55PM MDT until August 7 at 8:00PM MDT by NWS Pueblo CO

Effective: Thu August 6, 2026, 12:55 PM
Expires: Fri August 7, 2026, 5:00 AM

The National Weather Service in Pueblo has issued a Red Flag Warning for gusty winds and low relative humidity, which is in effect from 1 PM to 8 PM MDT Friday. The Fire Weather Watch is no longer in effect. * AFFECTED AREA...Fire Weather Zones 222 and 228. * WINDS...East 10 to 15 mph with gusts up to 30 mph. * RELATIVE HUMIDITY...As low as 10 percent. * IMPACTS...Fires will catch and spread quickly. Exercise extreme caution with any outdoor burning.

A Red Flag Warning means that critical fire weather conditions are either occurring now, or will shortly. A combination of strong winds, low relative humidity, and warm temperatures can contribute to extreme fire behavior.