Air Quality in Fort Collins, United States

Drizzle
11.1°C · 95.9% humidity
11.1°
Feels 11.1°
39
Good
Air quality is satisfactory. Enjoy outdoor activities.
5 stations

Nearby Monitoring Stations

AQI Forecast
27 5am
27
27
39 8am
34
31
29 11am
28
27
27 2pm
26
26
26 5pm
25
25
25 8pm
25
25
25 11pm
27
27
27 2am
27
27
AD 728×90

Air Quality Index Trend

47h · 1 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. Current PM2.5 concentration in Fort Collins is 1.9× the WHO annual guideline of 5 µg/m³.

95.9%
Humidity
65.4 km/h
Wind SE
1019.0 hPa
Pressure
4.4
UV Moderate
GoodModerateUSGUnhealthyVery UnhealthyHazardous
PM2.5
39
9.36 µg/m³
PM10
13
13.7 µg/m³
050100150200300500

Temperature & Precipitation

PM2.5 Trend

47h · 1 station
PM2.59.36 µg/m³ ✓ WHO
Good
PM1013.7 µg/m³
Good
UV INDEX4.4
Moderate
AD 300×250
9.36
Median
9.2
Average
6.0
Low
10.4
High
PM2.5 µg/m³ · Model: 6.25 · Bias: -3.1
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
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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 2026-05-29T14:36 UTC.