Air Quality in Fort Collins, United States

Rain
30.3°C · 19.6% humidity
30.3°
Feels 30.3°
12
Good
Air quality is satisfactory. Enjoy outdoor activities.
1 station

Nearby Monitoring Stations

AQI Forecast
25 3pm
25
25
12 6pm
16
18
20 9pm
22
23
23 12am
24
24
26 3am
27
27
27 6am
27
27
25 9am
25
25
25 12pm
25
25
AD 728×90

Air Quality Index Trend

46h · 4 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.

19.6%
Humidity
62.9 km/h
Wind SE
1013.0 hPa
Pressure
2.2
UV Moderate
GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5
12
3.0 µg/m³
PM10▲
19
20.55 µg/m³
050100150200300500

What is the weather forecast for Fort Collins?

Temperature & Precipitation

PM2.5 Trend

46h · 4 stations
PM2.53.0 µg/m³ ✓ WHO
Good
PM1020.55 µg/m³
Good
UV INDEX2.2
Moderate
AD 300×250
Station readings (1 station within 25 km)
3.0
Median
3.0
Average
3.0
Low
3.0
High
PM2.5 µg/m³ · Model: 7.1 · Bias: +4.1

What is the 7-day forecast for Fort Collins?

05-29
30.5° 11.1°
19.69 mm
05-30
28.4° 12.4°
0.56 mm
05-31
28.6° 13.9°
2.0 mm
06-01
26.4° 12.3°
06-02
32.7° 14.7°
06-03
32.1° 14.0°
06-04
28.2° 12.5°
4.44 mm
Both models agree Avg diff: 4.5°C

Where are air quality stations near Fort Collins?

27
FTW1
4.9 km PM2.5: 6.5 µg/m³
27
FTW2
4.9 km PM2.5: 6.4 µg/m³
27
FTW3
4.9 km PM2.5: 6.4 µg/m³
–
Fossil Creek
12.7 km
12
Timnath - Bethke Elementary
13.8 km PM2.5: 3.0 µg/m³ PM10: 12.0 µg/m³

What cities are near Fort Collins?

12 Loveland 109 Greeley 105 Evans 46 Longmont 46 Erie 46 Boulder 16 Cheyenne 35 Louisville 46 Broomfield 36 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 2026-05-29T00:19 UTC.