Today | Weather | Tuesday, October 14, 2025

Weather in Fort Collins, Colorado

07:32 PM

Now

61° F

Feels Like 61°

Precipitation 0 %

Wind 6 mph

Humidity 53 %

Today

Day 68°

Night 45°

Precipitation 4 %

Wind 5 mph

Fort Collins Weather Forecast Updated

13 minutes ago

Last updated on October 14, 2025 7:19 PM

Weather Forecast History

Last Year's Weather on This Day (October 14, 2024)

Day

81°

Night

46°

Wind

6 mph

Precipitation

Air Quality in Fort Collins

NOW

21 AQI

Good air quality Dominant pollutant: O₃

Pollutant Concentrations:

PM_2.5 0.5 µg/m³

PM₁₀ 0.65 µg/m³

O₃ 0.023 ppm

NO₂ 1.7 ppb

SO₂ 0 ppb

CO 0.07 ppm

NH₃ 0.26 µg/m³

NO 0 µg/m³

PM_2.5 – Fine particles <2.5μm

PM₁₀ – Inhalable particles <10μm

O₃ – Ozone

NO₂ – Nitrogen dioxide

SO₂ – Sulfur dioxide

CO – Carbon monoxide

NH₃ – Ammonia

NO – Nitric oxide

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

Show raw pollutant concentrations (µg/m³)

PM_2.5 – 0.5 µg/m³

PM₁₀ – 0.65 µg/m³

O₃ – 45.34 µg/m³

NO₂ – 3.27 µg/m³

SO₂ – 0.01 µg/m³

CO – 84.73 µg/m³

NH₃ – 0.26 µg/m³

NO – 0 µg/m³

View Hourly Air Quality Forecast