Weather Forecast for Fort Collins
Colorado, United States of America
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Current Weather - Fort Collins: 21°C
Current Weather - Fort Collins: 21°C
Colorado, United States of America
Clear
Feels like 18°C
Wind
6 km/h WNW
Humidity
26%
Pressure
1005 mb
UV Index
0
Visibility
10 km
Sunny
Monday, August 03, 2026
High
38°C
Low
20°C
Rain Chance
1%
Hourly Forecast
34°C
36°C
38°C
38°C
37°C
35°C
35°C
34°C
30°C
29°C
24°C
25°C
22°C
21°C
Day Statistics
Maximum Wind
25 km/h
Humidity
19%
Precipitation
0 mm
UV Index
9
Visibility
10 km
Rain Chance
1%
Snow Chance
0%
Sun & Moon
Sunrise
05:59 AM
Sunset
08:13 PM
Moonrise
10:30 PM
Moonset
11:10 AM
Moon Phase
Last Quarter
Moon Illumination
65%
Air Quality
PM2.5
7
μg/m³
PM10
8.8
μg/m³
NO₂
6.6
μg/m³
O₃
88.5
μg/m³
SO₂
0.7
μg/m³
CO
131.8
μg/m³
Weather Alerts
Heat Advisory issued August 2 at 12:04PM MDT until August 3 at 6:00PM MDT by NWS Denver CO
* WHAT...Temperatures of 98 to 105 today and 96 to 103 on Monday. * WHERE...Fort Collins, Boulder and the western suburbs of Denver, Denver, Castle Rock, Briggsdale, and Greeley. * WHEN...Until 6 PM MDT Monday. * 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. Take extra precautions when outside. Wear lightweight and loose fitting clothing. Try to limit strenuous activities to early morning or evening. Take action when you see symptoms of heat exhaustion and heat stroke.
Air Quality Alert issued August 2 at 4:10PM MDT by NWS Denver CO
The Colorado Department of Public Health and Environment has issued the following... WHAT...Ozone Action Day Alert. WHERE...Douglas, Jefferson, Denver, western Arapahoe, western Adams, Broomfield, Boulder, Larimer, and Weld Counties WHEN...400 PM Sunday August 02 to 1200 AM Monday August 03 IMPACTS...Ozone Action Day Alert is now in effect for the Front Range Urban Corridor. Ozone will reach levels that are Unhealthy for Sensitive Groups on Sunday. The highest concentrations are expected in western portions of the northern Front Range, from Denver northward to Fort Collins. On Monday, unsettled weather conditions are expected to keep ozone in the Good to Moderate range. For Colorado air quality conditions, forecasts, and advisories, visit: https://www.colorado.gov/airquality/colorado_summary.aspx If possible, please help us reduce ozone pollution by limiting driving gas and diesel-powered vehicles until midnight, Sunday night, August 2, 2026. Colorado is also addressing ozone pollution through state policies. For more information about health impacts and how ozone pollution forms in Colorado, visit: https://cdphe.colorado.gov/ozone- pollution-and-your-health HEALTH INFORMATION...Increasing likelihood of respiratory symptoms and breathing discomfort in active children and adults and people with lung disease, such as asthma. Active children and adults, and people with lung disease, such as asthma, should reduce prolonged or heavy outdoor exertion.
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