Stay updated with real-time air quality in Lone Tree, 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)
30
Good
Lone Tree, Colorado
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
5.33 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
19.79 μg/m³
0
55
155
255
425
605+
25.25 ppb
0
55
71
86
201
201+
0.57 ppb
0
36
76
186
605
1005+
32.23 ppb
0
54
101
361
1250
2050+
0.42 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
Lone Tree, Colorado
Lone Tree, Colorado
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AQI 30
Good
5.34μg/m³
PM2.5
19.77μg/m³
PM10
25.54ppb
O3
0.57ppb
SO2
32.17ppb
NO2
0.42ppm
CO
AQI 30
Good
5.34μg/m³
PM2.5
19.83μg/m³
PM10
25.00ppb
O3
0.57ppb
SO2
32.39ppb
NO2
0.42ppm
CO
AQI 30
Good
5.42μg/m³
PM2.5
19.77μg/m³
PM10
27.19ppb
O3
0.57ppb
SO2
32.24ppb
NO2
0.42ppm
CO
AQI 30
Good
5.26μg/m³
PM2.5
19.82μg/m³
PM10
24.39ppb
O3
0.57ppb
SO2
32.37ppb
NO2
0.42ppm
CO
AQI 33
Good
5.35μg/m³
PM2.5
22.51μg/m³
PM10
36.32ppb
O3
0.64ppb
SO2
31.91ppb
NO2
0.39ppm
CO
AQI 32
Good
4.72μg/m³
PM2.5
20.08μg/m³
PM10
16.50ppb
O3
0.59ppb
SO2
33.51ppb
NO2
0.43ppm
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 Lone Tree, Colorado is updated every hour for accuracy.
In the past 24 hours, the air quality in Lone Tree, Colorado was at its worst at 03:00:00 on 2026-01-22.
In the last 24 hours, the best air quality in Lone Tree, Colorado was observed at 08:00:00 on 2026-01-22.
As of now, the AQI in Lone Tree, Colorado is 30, indicating Good conditions.
Lone Tree, Colorado air has the highest levels of NO2.
Poor air quality in Lone Tree, Colorado means it's advisable to stay indoors and wear a mask for your protection.
PM2.5 levels in Lone Tree, Colorado are currently 5.334 μg/m3.
The PM10 concentration in Lone Tree, Colorado is 19.789 μg/m3 at the moment.
The current carbon monoxide (CO) concentration in Lone Tree, Colorado is 0.424 ppm.
Currently, Lone Tree, Colorado has a sulfur dioxide (SO2) concentration of 0.572 ppb.
The current ozone (O3) level in Lone Tree, Colorado at the moment is 25.245 ppm.
Nitrogen dioxide (NO2) level in Lone Tree, Colorado at the moment is 32.227 ppb.
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