Stay updated with real-time air quality in Louisville, 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)
38
Good
Louisville, Colorado
Last updated: ... (Local time)
Good
Fine
Moderate
Poor
Very poor
Hazardous
4.30 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
20.03 μg/m³
0
55
155
255
425
605+
41.15 ppb
0
55
71
86
201
201+
0.38 ppb
0
36
76
186
605
1005+
19.41 ppb
0
54
101
361
1250
2050+
0.32 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
Louisville, Colorado
Louisville, Colorado
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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 41
Good
3.87μg/m³
PM2.5
17.78μg/m³
PM10
44.06ppb
O3
0.37ppb
SO2
19.86ppb
NO2
0.33ppm
CO
AQI 38
Good
6.71μg/m³
PM2.5
33.35μg/m³
PM10
34.65ppb
O3
0.38ppb
SO2
20.27ppb
NO2
0.35ppm
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
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 39
Good
3.51μg/m³
PM2.5
17.03μg/m³
PM10
42.23ppb
O3
0.38ppb
SO2
20.02ppb
NO2
0.31ppm
CO
Air quality data and pollutant measurements for Colorado, USA adhere to strict US EPA standards. The data is collected from multiple reliable sources, including satellites and ground-based monitoring stations. This data is further analyzed and enhanced using machine learning and advanced algorithms that factor in elements such as traffic and population density, ensuring accurate and reliable results.
Source: Ambee Data Sources
The air quality for Louisville, Colorado is updated every hour.
The worst air quality in Louisville, Colorado in the last 24 hours was observed at 12:00:00 on 2025-10-22.
In the last 24 hrs, the best air quality in Louisville, Colorado was observed at 03:00:00 on 2025-10-22.
The current air quality in Louisville, Colorado is 38, categorized as Good based on real-time data.
The most common pollutant in Louisville, Colorado is O3.
If the air quality in Louisville, Colorado is poor, consider staying indoors and wearing a mask to protect yourself.
The current PM2.5 concentration at Louisville, Colorado is 4.305 μg/m3.
The current PM10 concentration at Louisville, Colorado is 20.031 μg/m3.
The current carbon monoxide (CO) concentration at Louisville, Colorado is 0.319 ppm.
The current sulfur dioxide (SO2) concentration at Louisville, Colorado is 0.375 ppb.
The current ozone (O3) concentration at Louisville, Colorado is 41.15 ppm.
The current nitrogen dioxide (NO2) concentration at Louisville, Colorado is 19.414 ppb.
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