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)
35
Good
Lone Tree, Colorado
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
2.61 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
14.53 μg/m³
0
55
155
255
425
605+
38.22 ppb
0
55
71
86
201
201+
0.23 ppb
0
36
76
186
605
1005+
7.21 ppb
0
54
101
361
1250
2050+
0.19 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Lone Tree, Colorado
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AQI 35
Good
2.33μg/m³
PM2.5
11.45μg/m³
PM10
38.17ppb
O3
0.35ppb
SO2
5.40ppb
NO2
0.19ppm
CO
AQI 35
Good
2.35μg/m³
PM2.5
11.48μg/m³
PM10
38.41ppb
O3
0.35ppb
SO2
5.41ppb
NO2
0.19ppm
CO
AQI 35
Good
2.30μg/m³
PM2.5
10.33μg/m³
PM10
38.20ppb
O3
0.36ppb
SO2
5.34ppb
NO2
0.19ppm
CO
AQI 35
Good
2.26μg/m³
PM2.5
10.82μg/m³
PM10
38.18ppb
O3
0.35ppb
SO2
5.40ppb
NO2
0.19ppm
CO
AQI 36
Good
2.46μg/m³
PM2.5
14.51μg/m³
PM10
38.52ppb
O3
0.37ppb
SO2
5.20ppb
NO2
0.18ppm
CO
AQI 35
Good
1.79μg/m³
PM2.5
7.45μg/m³
PM10
38.45ppb
O3
0.35ppb
SO2
5.40ppb
NO2
0.19ppm
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 12:00:00 on 2026-02-10.
In the last 24 hours, the best air quality in Lone Tree, Colorado was observed at 04:00:00 on 2026-02-10.
As of now, the AQI in Lone Tree, Colorado is 35, indicating Good conditions.
Lone Tree, Colorado air has the highest levels of O3.
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 2.608 μg/m3.
The PM10 concentration in Lone Tree, Colorado is 14.528 μg/m3 at the moment.
The current carbon monoxide (CO) concentration in Lone Tree, Colorado is 0.188 ppm.
Currently, Lone Tree, Colorado has a sulfur dioxide (SO2) concentration of 0.229 ppb.
The current ozone (O3) level in Lone Tree, Colorado at the moment is 38.224 ppm.
Nitrogen dioxide (NO2) level in Lone Tree, Colorado at the moment is 7.209 ppb.
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