Stay updated with real-time air quality in Fort Collins, Colorado featuring accurate data on AQI, PM2.5, PM10, O3, NO2, SO2, and CO levels. Use our interactive map and detailed forecasts to monitor pollution trends, manage health risks, and plan your daily activities with confidence.
Live AQI (Air Quality Index)
37
Good
Fort Collins, Colorado
Last updated: ... (Local time)
Good
Fine
Moderate
Poor
Very poor
Hazardous
6.23 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
8.14 μg/m³
0
55
155
255
425
605+
40.04 ppb
0
55
71
86
201
201+
0.59 ppb
0
36
76
186
605
1005+
3.73 ppb
0
54
101
361
1250
2050+
0.20 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
Fort Collins, Colorado
Fort Collins, Colorado
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AQI 38
Good
6.92μg/m³
PM2.5
19.08μg/m³
PM10
36.42ppb
O3
0.46ppb
SO2
2.80ppb
NO2
0.21ppm
CO
AQI 40
Good
6.17μg/m³
PM2.5
16.67μg/m³
PM10
43.06ppb
O3
0.45ppb
SO2
2.79ppb
NO2
0.21ppm
CO
AQI 39
Good
6.82μg/m³
PM2.5
21.68μg/m³
PM10
42.11ppb
O3
0.45ppb
SO2
2.93ppb
NO2
0.21ppm
CO
AQI 49
Good
9.44μg/m³
PM2.5
27.52μg/m³
PM10
43.24ppb
O3
0.45ppb
SO2
2.79ppb
NO2
0.21ppm
CO
AQI 49
Good
8.78μg/m³
PM2.5
18.99μg/m³
PM10
37.57ppb
O3
0.44ppb
SO2
3.02ppb
NO2
0.22ppm
CO
AQI 54
Moderate
11.46μg/m³
PM2.5
41.34μg/m³
PM10
39.13ppb
O3
0.44ppb
SO2
3.34ppb
NO2
0.21ppm
CO
The air quality data for Colorado, USA is gathered from reliable sources such as satellites and monitoring stations, adhering to US EPA guidelines. With the help of advanced algorithms and machine learning, factors like traffic and population density are analyzed to deliver accurate and dependable results.
Source: Ambee Data Sources
Air quality updates for Fort Collins, Colorado are available every hour.
Fort Collins, Colorado experienced its worst air quality at 04:00:00, 2025-07-16.
The best air quality in Fort Collins, Colorado was observed at 06:00:00 on 2025-07-16.
The air quality in Fort Collins, Colorado right now is Good, with an AQI of 35.
In Fort Collins, Colorado, O3 is the most frequently found pollutant.
When air quality in Fort Collins, Colorado is compromised, staying indoors and wearing a mask can reduce health risks.
Fort Collins, Colorado currently has a PM2.5 concentration of 5.735 μg/m3.
Fort Collins, Colorado currently has a PM10 concentration of 7.301 μg/m3.
The current carbon monoxide (CO) level in Fort Collins, Colorado is 0.2 ppm.
The current sulfur dioxide (SO2) concentration in Fort Collins, Colorado is 0.448 ppb.
Fort Collins, Colorado currently has an ozone (O3) concentration of 38.159 ppm.
The current level of nitrogen dioxide (NO2) in Fort Collins, Colorado is 2.696 ppb.
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