Stay updated with real-time air quality in Great Falls, 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)
47
Good
Great Falls, Virginia
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
4.69 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
22.21 μg/m³
0
55
155
255
425
605+
51.32 ppb
0
55
71
86
201
201+
0.29 ppb
0
36
76
186
605
1005+
2.15 ppb
0
54
101
361
1250
2050+
0.17 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Great Falls, Virginia
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AQI 44
Good
4.87μg/m³
PM2.5
22.31μg/m³
PM10
48.43ppb
O3
0.29ppb
SO2
2.83ppb
NO2
0.17ppm
CO
AQI 49
Good
4.83μg/m³
PM2.5
22.58μg/m³
PM10
52.53ppb
O3
0.30ppb
SO2
2.69ppb
NO2
0.17ppm
CO
AQI 44
Good
3.39μg/m³
PM2.5
15.25μg/m³
PM10
48.48ppb
O3
0.29ppb
SO2
1.07ppb
NO2
0.17ppm
CO
AQI 40
Good
5.13μg/m³
PM2.5
22.66μg/m³
PM10
43.26ppb
O3
0.30ppb
SO2
2.68ppb
NO2
0.17ppm
CO
AQI 44
Good
3.39μg/m³
PM2.5
15.25μg/m³
PM10
48.48ppb
O3
0.29ppb
SO2
1.07ppb
NO2
0.17ppm
CO
AQI 41
Good
3.57μg/m³
PM2.5
9.54μg/m³
PM10
44.14ppb
O3
0.29ppb
SO2
0.84ppb
NO2
0.17ppm
CO
Air quality and pollutant data for Virginia, 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 Great Falls, Virginia is updated every hour for accuracy.
In the past 24 hours, the air quality in Great Falls, Virginia was at its worst at 11:00:00 on 2026-07-22.
In the last 24 hours, the best air quality in Great Falls, Virginia was observed at 10:00:00 on 2026-07-23.
As of now, the AQI in Great Falls, Virginia is 47, indicating Good conditions.
Great Falls, Virginia air has the highest levels of O3.
Poor air quality in Great Falls, Virginia means it's advisable to stay indoors and wear a mask for your protection.
PM2.5 levels in Great Falls, Virginia are currently 4.692 μg/m3.
The PM10 concentration in Great Falls, Virginia is 22.206 μg/m3 at the moment.
The current carbon monoxide (CO) concentration in Great Falls, Virginia is 0.167 ppm.
Currently, Great Falls, Virginia has a sulfur dioxide (SO2) concentration of 0.291 ppb.
The current ozone (O3) level in Great Falls, Virginia at the moment is 51.321 ppm.
Nitrogen dioxide (NO2) level in Great Falls, Virginia at the moment is 2.15 ppb.
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