Active National Weather Service alert for Fort Collins, CO: Dense Fog Advisory. Dense Fog Advisory issued October 27 at 8:39AM MDT until October 27 at 10:00AM MDT by NWS Denver CO Until Tue, 10:00 AM MDT.
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Fort Collins, CO weather, straight from the source.

Current conditions, official National Weather Service forecasts and alerts, rain timing, local radar, air quality, wind, humidity, sunrise, sunset, and the latest reported update for Fort Collins, CO. Always follow local warnings and emergency instructions.

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Weather status

Dense Fog Advisory

Dense Fog Advisory issued October 27 at 8:39AM MDT until October 27 at 10:00AM MDT by NWS Denver CO Expires Tue, 10:00 AM MDT.

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What’s next

Hourly forecast

⌖ Fort Collins, CO

Check the latest hourly conditions, seven-day outlook, rain timing, wind, sunrise and sunset for Fort Collins, CO. Forecasts and alerts update from NOAA and the National Weather Service.

42°Patchy Fog5% rain
48°Patchy Fog0% rain
51°Partly Sunny0% rain
55°Partly Sunny0% rain
58°Partly Sunny0% rain
59°Mostly Sunny0% rain
59°Mostly Sunny0% rain
60°Sunny0% rain

Next 24 hours

Rain Timeline

Highest chance 5%

No meaningful precipitation is expected in the official hourly forecast.

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Official NWS outlook

7-Day Forecast

High / low temperatures

Today

! NWS
61°37°

Areas Of Fog then Partly Sunny

Precipitation
5%
Wind
SSE 2 to 7 mph
Sunrise
7:25 AM
Sunset
6:04 PM

Wed

69°37°

Mostly Sunny

Precipitation
0%
Wind
WSW 2 to 8 mph
Sunrise
7:26 AM
Sunset
6:03 PM

Thu

67°39°

Mostly Sunny

Precipitation
0%
Wind
ENE 3 to 7 mph
Sunrise
7:28 AM
Sunset
6:02 PM

Fri

66°40°

Partly Sunny

Precipitation
4%
Wind
NE 1 to 7 mph
Sunrise
7:29 AM
Sunset
6:01 PM

Sat

67°41°

Mostly Sunny

Precipitation
10%
Wind
SW 2 to 7 mph
Sunrise
7:30 AM
Sunset
5:59 PM

Sun

61°39°

Rain Showers Likely

Precipitation
58%
Wind
NNE 1 to 6 mph
Sunrise
6:31 AM
Sunset
4:58 PM

Mon

58°35°

Chance Rain Showers

Precipitation
41%
Wind
NW 17 to 24 mph
Sunrise
6:32 AM
Sunset
4:57 PM

Forecasts, icons, precipitation, wind, and alerts are from the National Weather Service. Sunrise and sunset are calculated locally for the selected coordinates.

Weather for a healthier day

Healthy Weather

Real Feel43°F
Use caution walking outside

Dense Fog Advisory is active. Review the official alert before going outside.

WindS3 mph
Best walk timeBetter weather window: 11 AM–1 PM

Walking: 0% average rain chance, near 53°F, with winds near 4 mph. Review the active Dense Fog Advisory.

Official EPA AirNowLocal air qualityFort Collins, CO
View AQI +
More weather details
Wind gustsNot reported
Rain now5%next hour
Humidity87%current
Daily peak UV forecastChecking…EPA daily maximum · not a current reading

Wind impact: Light wind with little expected outdoor impact.

Full Healthy Weather guides and reminders →

“Better weather window” is planning guidance based on official NWS data—not a promise of safe conditions. Review active alerts and radar before leaving.

Storm & DetailsGusts, pressure, visibility and official risk outlooksView details +
Wind gustNot reported
Pressure30.06 in
Visibility9.0 mi
Peak rain chance5%
Dew point41°F
Active alerts1

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Active NWS alerts

Weather safety ↗

Moderate · Expected

Dense Fog Advisory

Applies to: Larimer County Below 6000 Feet/Northwest Weld County; Boulder And Jefferson Counties Below 6000 Feet/West Broomfield County; North Douglas County Below 6000 Feet/Denver/West Adams and Arapahoe Counties/East Broomfield County; Northeast Weld County; Central and South Weld County; Morgan County; Central and East Adams and Arapahoe CountiesIssued by: NWS Denver CODense Fog Advisory issued October 27 at 8:39AM MDT until October 27 at 10:00AM MDT by NWS Denver CO
Alert details* WHAT...Visibility less than one mile in dense fog. * WHERE...Fort Collins, Boulder and the western suburbs of Denver, Denver, Briggsdale, Greeley, Fort Morgan, and Byers. * WHEN...Until 10 AM MDT this morning. * IMPACTS...Low visibility could make driving conditions hazardous.
Safety instructionsIf driving, slow down, use your headlights, and leave plenty of distance ahead of you.
Visit local NWS office ↗