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)
27
Good
Frederick, Colorado
Last updated: ... (Local time)
Good
Fine
Moderate
Poor
Very poor
Hazardous
4.70 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
23.23 μg/m³
0
55
155
255
425
605+
16.06 ppb
0
55
71
86
201
201+
0.38 ppb
0
36
76
186
605
1005+
16.86 ppb
0
54
101
361
1250
2050+
0.29 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Moderate
Frederick, Colorado
Frederick, Colorado
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AQI 27
Good
4.70μg/m³
PM2.5
23.23μg/m³
PM10
16.06ppb
O3
0.38ppb
SO2
16.86ppb
NO2
0.29ppm
CO
AQI 33
Good
6.23μg/m³
PM2.5
27.14μg/m³
PM10
36.43ppb
O3
0.38ppb
SO2
19.85ppb
NO2
0.31ppm
CO
AQI 49
Good
8.90μg/m³
PM2.5
38.99μg/m³
PM10
35.51ppb
O3
0.38ppb
SO2
14.66ppb
NO2
0.28ppm
CO
AQI 27
Good
4.68μg/m³
PM2.5
26.56μg/m³
PM10
22.10ppb
O3
0.38ppb
SO2
18.74ppb
NO2
0.31ppm
CO
AQI 35
Good
4.77μg/m³
PM2.5
23.27μg/m³
PM10
38.27ppb
O3
0.38ppb
SO2
17.59ppb
NO2
0.32ppm
CO
AQI 33
Good
4.94μg/m³
PM2.5
23.59μg/m³
PM10
35.66ppb
O3
0.38ppb
SO2
18.23ppb
NO2
0.30ppm
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 02:00:00 on 2025-10-21.
In the last 24 hours, the best air quality in Frederick, Colorado was observed at 01:00:00 on 2025-10-21.
As of now, the AQI in Frederick, Colorado is 27, indicating Good conditions.
Frederick, Colorado air has the highest levels of PM2.5.
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 4.7 μg/m3.
The PM10 concentration in Frederick, Colorado is 23.232 μg/m3 at the moment.
The current carbon monoxide (CO) concentration in Frederick, Colorado is 0.292 ppm.
Currently, Frederick, Colorado has a sulfur dioxide (SO2) concentration of 0.379 ppb.
The current ozone (O3) level in Frederick, Colorado at the moment is 16.061 ppm.
Nitrogen dioxide (NO2) level in Frederick, Colorado at the moment is 16.858 ppb.
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