Stay updated with real-time air quality in Frederick, 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)
49
Good
Frederick, Colorado
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
9.17 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
42.80 μg/m³
0
55
155
255
425
605+
52.71 ppb
0
55
71
86
201
201+
0.69 ppb
0
36
76
186
605
1005+
11.45 ppb
0
54
101
361
1250
2050+
0.22 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
Frederick, Colorado
Frederick, Colorado
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AQI 49
Good
9.17μg/m³
PM2.5
42.80μg/m³
PM10
52.71ppb
O3
0.69ppb
SO2
11.45ppb
NO2
0.22ppm
CO
AQI 80
Moderate
8.37μg/m³
PM2.5
42.94μg/m³
PM10
63.82ppb
O3
0.70ppb
SO2
12.40ppb
NO2
0.23ppm
CO
AQI 80
Moderate
11.40μg/m³
PM2.5
50.98μg/m³
PM10
63.87ppb
O3
0.72ppb
SO2
6.72ppb
NO2
0.22ppm
CO
AQI 51
Moderate
6.38μg/m³
PM2.5
27.11μg/m³
PM10
55.40ppb
O3
0.66ppb
SO2
12.06ppb
NO2
0.23ppm
CO
AQI 80
Moderate
7.66μg/m³
PM2.5
35.32μg/m³
PM10
64.34ppb
O3
0.67ppb
SO2
11.66ppb
NO2
0.23ppm
CO
AQI 74
Moderate
7.41μg/m³
PM2.5
32.99μg/m³
PM10
62.23ppb
O3
0.71ppb
SO2
11.57ppb
NO2
0.23ppm
CO
Air quality and pollutant data for Colorado, USA are sourced from ground-based monitors and satellites, adhering to US EPA standards. Machine learning and advanced algorithms enhance the data by incorporating local variables like traffic and population density, ensuring high accuracy and dependability.
Source: Ambee Data Sources
The air quality information for Frederick, Colorado is updated every hour for accuracy.
In the past 24 hours, the air quality in Frederick, Colorado was at its worst at 11:00:00 on 2026-07-22.
In the last 24 hours, the best air quality in Frederick, Colorado was observed at 10:00:00 on 2026-07-23.
As of now, the AQI in Frederick, Colorado is 49, indicating Good conditions.
Frederick, Colorado air has the highest levels of O3.
Poor air quality in Frederick, Colorado means it's advisable to stay indoors and wear a mask for your protection.
PM2.5 levels in Frederick, Colorado are currently 9.17 μg/m3.
The PM10 concentration in Frederick, Colorado is 42.804 μg/m3 at the moment.
The current carbon monoxide (CO) concentration in Frederick, Colorado is 0.222 ppm.
Currently, Frederick, Colorado has a sulfur dioxide (SO2) concentration of 0.692 ppb.
The current ozone (O3) level in Frederick, Colorado at the moment is 52.706 ppm.
Nitrogen dioxide (NO2) level in Frederick, Colorado at the moment is 11.45 ppb.
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