Stay updated with real-time air quality in Leesburg, Virginia 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)
44
Good
Leesburg, Virginia
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
3.70 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
10.04 μg/m³
0
55
155
255
425
605+
48.50 ppb
0
55
71
86
201
201+
0.36 ppb
0
36
76
186
605
1005+
0.72 ppb
0
54
101
361
1250
2050+
0.18 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Leesburg, Virginia
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AQI 46
Good
4.37μg/m³
PM2.5
20.23μg/m³
PM10
49.96ppb
O3
0.38ppb
SO2
1.21ppb
NO2
0.16ppm
CO
AQI 43
Good
3.70μg/m³
PM2.5
10.19μg/m³
PM10
46.27ppb
O3
0.33ppb
SO2
0.60ppb
NO2
0.17ppm
CO
AQI 43
Good
3.70μg/m³
PM2.5
9.08μg/m³
PM10
46.03ppb
O3
0.33ppb
SO2
0.42ppb
NO2
0.17ppm
CO
AQI 43
Good
3.69μg/m³
PM2.5
9.41μg/m³
PM10
46.19ppb
O3
0.33ppb
SO2
0.46ppb
NO2
0.17ppm
CO
AQI 43
Good
3.67μg/m³
PM2.5
10.13μg/m³
PM10
46.45ppb
O3
0.33ppb
SO2
0.54ppb
NO2
0.17ppm
CO
AQI 43
Good
3.69μg/m³
PM2.5
9.19μg/m³
PM10
46.10ppb
O3
0.33ppb
SO2
0.43ppb
NO2
0.17ppm
CO
Air quality data and pollutant measurements for Virginia, 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 Leesburg, Virginia is updated every hour.
The worst air quality in Leesburg, Virginia in the last 24 hours was observed at 10:00:00 on 2026-07-22.
In the last 24 hrs, the best air quality in Leesburg, Virginia was observed at 12:00:00 on 2026-07-23.
The current air quality in Leesburg, Virginia is 44, categorized as Good based on real-time data.
The most common pollutant in Leesburg, Virginia is O3.
If the air quality in Leesburg, Virginia is poor, consider staying indoors and wearing a mask to protect yourself.
The current PM2.5 concentration at Leesburg, Virginia is 3.699 μg/m3.
The current PM10 concentration at Leesburg, Virginia is 10.044 μg/m3.
The current carbon monoxide (CO) concentration at Leesburg, Virginia is 0.185 ppm.
The current sulfur dioxide (SO2) concentration at Leesburg, Virginia is 0.362 ppb.
The current ozone (O3) concentration at Leesburg, Virginia is 48.497 ppm.
The current nitrogen dioxide (NO2) concentration at Leesburg, Virginia is 0.72 ppb.
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