Air Quality in Fort Collins, United States

Drizzle
14.7°C · 33.3% humidity
14.7°
Feels 14.7°
20
Good
Air quality is satisfactory. Enjoy outdoor activities.
4 stations

Nearby Monitoring Stations

AQI Forecast Calibrated
20 6pm
21
20
20 9pm
20
20
33 12am
33
45
45 3am
45
45
45 6am
45
45
45 9am
45
45
45 12pm
33
33
33 3pm
33
33
Station readings
20
21
CAMS model adj +8
12
12
12
12
12
12
25
25
37
37
37
37
37
37
37
37
37
37
37
25
25
25
25
25
AD 728×90

PM2.5 Trend (24h)

24h · 6 stations
33.3%
Humidity
70.5 km/h
Wind SE
1007.4 hPa
Pressure
1.4
UV Low
GoodModerateUSGUnhealthyVery UnhealthyHazardous

What is the weather forecast for Fort Collins?

Temperature & Precipitation

PM2.54.9 µg/m³ ✓ WHO
Good
PM1013.7 µg/m³
Good
UV INDEX1.4
Low
AD 300×250
Station readings (4 stations within 25 km)
4.9
Median
4.71
Average
4.0
Low
5.05
High
PM2.5 µg/m³ · Model: 4.4 · Bias: -0.5

What is the 7-day forecast for Fort Collins?

04-09
19.9° 8.2°
1.75 mm
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°
Both models agree Avg diff: 4.3°C

Where are air quality stations near Fort Collins?

52
Fort Collins - CSU Facilities, Colorado, USA
1.6 km
17
Fort Collins - CSU Facilities, Colorado, USA
1.6 km
20
FTW1
4.9 km PM2.5: 4.9 µg/m³
26
FTW2
4.9 km PM2.5: 6.2 µg/m³
29
FTW3
4.9 km PM2.5: 7.0 µg/m³
17
Timnath - Bethke Elementary
13.8 km PM2.5: 4.0 µg/m³ PM10: 26.0 µg/m³

What cities are near Fort Collins?

20 Loveland 17 Greeley 21 Evans 22 Longmont 25 Erie 23 Boulder 23 Cheyenne 25 Louisville 26 Broomfield 25 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 2026-04-09T21:26 UTC.