Stay updated with real-time air quality in Littleton, 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)
50
Good
Littleton, Colorado
Last updated: ... (Local time)
Good
Fine
Moderate
Poor
Very poor
Hazardous
6.30 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
28.57 μg/m³
0
55
155
255
425
605+
53.89 ppb
0
55
71
86
201
201+
0.72 ppb
0
36
76
186
605
1005+
14.26 ppb
0
54
101
361
1250
2050+
0.28 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
Littleton, Colorado
Littleton, Colorado
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AQI 30
Good
4.27μg/m³
PM2.5
23.59μg/m³
PM10
32.30ppb
O3
0.77ppb
SO2
24.66ppb
NO2
0.62ppm
CO
AQI 35
Good
3.20μg/m³
PM2.5
15.60μg/m³
PM10
38.28ppb
O3
0.72ppb
SO2
23.05ppb
NO2
0.51ppm
CO
AQI 31
Good
5.31μg/m³
PM2.5
34.25μg/m³
PM10
33.41ppb
O3
0.73ppb
SO2
23.94ppb
NO2
0.55ppm
CO
AQI 38
Good
5.98μg/m³
PM2.5
40.67μg/m³
PM10
33.88ppb
O3
0.72ppb
SO2
23.75ppb
NO2
0.52ppm
CO
AQI 35
Good
3.03μg/m³
PM2.5
21.60μg/m³
PM10
38.41ppb
O3
0.70ppb
SO2
22.74ppb
NO2
0.48ppm
CO
AQI 39
Good
3.08μg/m³
PM2.5
12.61μg/m³
PM10
42.30ppb
O3
0.74ppb
SO2
23.30ppb
NO2
0.53ppm
CO
The air quality data for Colorado, USA is gathered from reliable sources such as satellites and monitoring stations, adhering to US EPA guidelines. With the help of advanced algorithms and machine learning, factors like traffic and population density are analyzed to deliver accurate and dependable results.
Source: Ambee Data Sources
Air quality updates for Littleton, Colorado are available every hour.
Littleton, Colorado experienced its worst air quality at 01:00:00, 2025-07-10.
The best air quality in Littleton, Colorado was observed at 02:00:00 on 2025-07-09.
The air quality in Littleton, Colorado right now is Good, with an AQI of 34.
In Littleton, Colorado, O3 is the most frequently found pollutant.
When air quality in Littleton, Colorado is compromised, staying indoors and wearing a mask can reduce health risks.
Littleton, Colorado currently has a PM2.5 concentration of 3.177 μg/m3.
Littleton, Colorado currently has a PM10 concentration of 14.583 μg/m3.
The current carbon monoxide (CO) level in Littleton, Colorado is 0.423 ppm.
The current sulfur dioxide (SO2) concentration in Littleton, Colorado is 0.855 ppb.
Littleton, Colorado currently has an ozone (O3) concentration of 37.158 ppm.
The current level of nitrogen dioxide (NO2) in Littleton, Colorado is 23.399 ppb.
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