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)
43
Good
Great Falls, Virginia
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
1.36 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
6.71 μg/m³
0
55
155
255
425
605+
46.28 ppb
0
55
71
86
201
201+
0.38 ppb
0
36
76
186
605
1005+
1.43 ppb
0
54
101
361
1250
2050+
0.13 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Great Falls, Virginia
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AQI 42
Good
2.38μg/m³
PM2.5
9.86μg/m³
PM10
44.52ppb
O3
0.44ppb
SO2
1.65ppb
NO2
0.13ppm
CO
AQI 40
Good
2.47μg/m³
PM2.5
9.71μg/m³
PM10
42.99ppb
O3
0.39ppb
SO2
1.58ppb
NO2
0.13ppm
CO
AQI 42
Good
1.35μg/m³
PM2.5
6.77μg/m³
PM10
44.57ppb
O3
0.39ppb
SO2
1.15ppb
NO2
0.12ppm
CO
AQI 44
Good
2.14μg/m³
PM2.5
8.41μg/m³
PM10
48.39ppb
O3
0.35ppb
SO2
1.49ppb
NO2
0.14ppm
CO
AQI 42
Good
1.35μg/m³
PM2.5
6.77μg/m³
PM10
44.57ppb
O3
0.39ppb
SO2
1.15ppb
NO2
0.12ppm
CO
AQI 40
Good
2.04μg/m³
PM2.5
5.59μg/m³
PM10
43.37ppb
O3
0.38ppb
SO2
1.06ppb
NO2
0.12ppm
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 07:00:00 on 2026-03-14.
In the last 24 hours, the best air quality in Great Falls, Virginia was observed at 10:00:00 on 2026-03-14.
As of now, the AQI in Great Falls, Virginia is 43, 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 1.361 μg/m3.
The PM10 concentration in Great Falls, Virginia is 6.713 μg/m3 at the moment.
The current carbon monoxide (CO) concentration in Great Falls, Virginia is 0.125 ppm.
Currently, Great Falls, Virginia has a sulfur dioxide (SO2) concentration of 0.384 ppb.
The current ozone (O3) level in Great Falls, Virginia at the moment is 46.283 ppm.
Nitrogen dioxide (NO2) level in Great Falls, Virginia at the moment is 1.425 ppb.
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