Air Quality in Fort Collins, United States

Drizzle
14.7°C · 33.3% humidity
14.7°
Feels 14.7°
17
Good
Air quality is satisfactory. Enjoy outdoor activities.
4 stations

Nearby Monitoring Stations

AQI Forecast Calibrated
15 11pm
15
27
39 2am
39
39
39 5am
39
39
39 8am
39
39
39 11am
39
27
27 2pm
27
27
27 5pm
27
39
39 8pm
39
39
Station readings
15
15
CAMS model adj +2
12
25
25
37
37
37
37
37
37
37
37
37
37
37
25
25
25
25
25
25
37
37
37
37
AD 728×90

PM2.5 Trend (24h)

25h · 6 stations
33.3%
Humidity
70.5 km/h
Wind SE
1007.4 hPa
Pressure
0.7
UV Low
GoodModerateUSGUnhealthyVery UnhealthyHazardous

What is the weather forecast for Fort Collins?

Temperature & Precipitation

PM2.53.97 µg/m³ ✓ WHO
Good
PM1013.7 µg/m³
Good
UV INDEX0.7
Low
AD 300×250
Station readings (4 stations within 25 km)
3.97
Median
3.64
Average
2.5
Low
4.11
High
PM2.5 µg/m³ · Model: 4.4 · Bias: +0.4

What is the 7-day forecast for Fort Collins?

04-10
14.7° 6.2°
7.81 mm
04-11
15.1° 7.1°
11.44 mm
04-12
16.9° 6.5°
3.56 mm
04-13
13.1° 6.2°
1.88 mm
04-14
9.9° 2.3°
16.44 mm
04-15
10.8° 1.9°
04-16
15.7° 3.8°
Both models agree Avg diff: 4.5°C

Where are air quality stations near Fort Collins?

26
Fort Collins - CSU Facilities, Colorado, USA
1.6 km
17
FTW1
4.9 km PM2.5: 4.0 µg/m³
17
FTW2
4.9 km PM2.5: 4.0 µg/m³
17
FTW3
4.9 km PM2.5: 4.1 µg/m³
12
Timnath - Bethke Elementary
13.8 km PM2.5: 3.0 µg/m³ PM10: 32.0 µg/m³

What cities are near Fort Collins?

17 Loveland 10 Greeley 15 Evans 16 Longmont 18 Erie 18 Boulder 8 Cheyenne 18 Louisville 18 Broomfield 18 Northglenn

Data sources: AQI from ground-level monitoring stations via AQICN. Weather forecast from ECMWF (IFS & CAMS models). AQI calculated using US EPA standard. Updated 2026-04-10T02:17 UTC.