Air Quality in Fort Collins, United States

Clear
19.3°C · 13.3% humidity
19.3°
Feels 19.3°
21
Good
Air quality is satisfactory. Enjoy outdoor activities.
5 stations

Nearby Monitoring Stations

AQI Forecast
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Air Quality Index Trend

45h · 9 stn

Fort Collins's air quality is primarily affected by vehicle emissions and industrial activity. Seasonal wildfire smoke and weather patterns can cause periodic air quality deterioration.

13.3%
Humidity
30.4 km/h
Wind S
1021.6 hPa
Pressure
0.0
UV Low
GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5
21
5.1 µg/m³
PM10▲
25
27.4 µg/m³
050100150200300500

What is the weather forecast for Fort Collins?

Temperature & Precipitation

PM2.5 Trend

45h · 9 stations
PM2.55.1 µg/m³ ✓ WHO
Good
PM1027.4 µg/m³
Good
UV INDEX0.0
Low
Station readings (5 stations within 25 km)
5.1
Median
5.33
Average
5.0
Low
5.5
High
PM2.5 µg/m³ · Model: 8.2 · Bias: +3.1

What is the 7-day forecast for Fort Collins?

10-20
21.1° 4.9°
10-21
22.0° 6.5°
10-22
13.4° 7.8°
10-23
11.5° 0.8°
6.06 mm
10-24
18.6° 11.0°
10-25
15.3° 5.9°
10-26
20.4° 4.6°
Both models agree Avg diff: 3.3°C

Where are air quality stations near Fort Collins?

–
Fort Collins - CSU
1.0 km
34
Fort Collins - CSU Facilities, Colorado, USA
1.6 km PM2.5: 8.2 µg/m³
38
Fort Collins - CSU Facilities, Colorado, USA
1.6 km PM2.5: 9.1 µg/m³
34
Fort Collins - CSU Facilities, Colorado, USA
1.6 km PM2.5: 8.2 µg/m³
21
Fort Collins - CSU Facilities, Colorado, USA
1.6 km PM2.5: 5.0 µg/m³
20
FTW1
4.9 km PM2.5: 4.9 µg/m³
20
FTW2
4.9 km PM2.5: 4.9 µg/m³
21
FTW3
4.9 km PM2.5: 5.0 µg/m³
21
Timnath - Bethke Elementary
13.8 km PM2.5: 5.0 µg/m³ PM10: 21.0 µg/m³

What cities are near Fort Collins?

22 Loveland 38 Greeley 38 Evans 26 Longmont 38 Erie 14 Boulder 30 Cheyenne 40 Louisville 44 Broomfield 45 Northglenn
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Data sources: AQI from ground-level monitoring stations via AQICN. Weather forecast from ECMWF (IFS & CAMS models). AQI calculated using US EPA standard. Updated 2026-10-20T20:05 UTC.