Stay updated with real-time air quality in Golden, 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)
40
Good
Golden, Colorado
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
2.39 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
13.75 μg/m³
0
55
155
255
425
605+
43.48 ppb
0
55
71
86
201
201+
0.67 ppb
0
36
76
186
605
1005+
6.63 ppb
0
54
101
361
1250
2050+
0.19 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
High
Golden, Colorado
Golden, Colorado
Scroll To Air Quality MapLoading...
AQI 39
Good
2.49μg/m³
PM2.5
12.68μg/m³
PM10
42.11ppb
O3
0.63ppb
SO2
6.87ppb
NO2
0.19ppm
CO
AQI 36
Good
2.67μg/m³
PM2.5
11.64μg/m³
PM10
39.19ppb
O3
0.43ppb
SO2
6.93ppb
NO2
0.20ppm
CO
AQI 36
Good
2.67μg/m³
PM2.5
11.82μg/m³
PM10
39.48ppb
O3
0.47ppb
SO2
6.95ppb
NO2
0.20ppm
CO
AQI 37
Good
2.61μg/m³
PM2.5
11.83μg/m³
PM10
39.70ppb
O3
0.43ppb
SO2
6.92ppb
NO2
0.20ppm
CO
AQI 36
Good
2.96μg/m³
PM2.5
13.86μg/m³
PM10
38.96ppb
O3
0.66ppb
SO2
7.39ppb
NO2
0.20ppm
CO
AQI 40
Good
2.32μg/m³
PM2.5
15.74μg/m³
PM10
43.14ppb
O3
0.64ppb
SO2
6.70ppb
NO2
0.19ppm
CO
Air quality measurements for Colorado, USA meet strict US EPA standards. These measurements are collected from reliable sources, including satellites and ground-based monitoring systems. Advanced algorithms and machine learning techniques are applied to the data, factoring in variables such as traffic and population density, to ensure precision and reliability.
Source: Ambee Data Sources
Air quality data for Golden, Colorado is updated on an hourly basis.
The worst air quality in Golden, Colorado was recorded at 11:00:00 on 2025-10-24.
The best air quality in Golden, Colorado was recorded at 10:00:00 on 2025-10-25.
The real-time air quality index in Golden, Colorado is 40, currently categorized as Good.
The most common pollutant in Golden, Colorado is O3.
If the air quality in Golden, Colorado is poor, limit outdoor activities and use a mask to safeguard your health.
The measured PM2.5 levels in Golden, Colorado at present are 2.391 μg/m3.
The current PM10 levels in Golden, Colorado are 13.75 μg/m3.
The current carbon monoxide (CO) level in Golden, Colorado is 0.187 ppm.
The current sulfur dioxide (SO2) levels in Golden, Colorado are 0.672 ppb.
The current ozone (O3) levels at Golden, Colorado is 43.476 ppm.
The current nitrogen dioxide (NO2) levels at Golden, Colorado is 6.627 ppb.
All Rights Reserved © Ambee Inc. 2025