Air Quality in Great Falls, United States

Windy
29.9°C · 40.9% humidity
29.9°
Feels 31.6°
34
Good
Air quality is satisfactory. Enjoy outdoor activities.
9 stations

Nearby Monitoring Stations

AQI Forecast
25 1pm
25
27
34 4pm
32
31
30 7pm
29
35
28 10pm
28
27
27 1am
27
25
25 4am
25
25
25 7am
27
25
25 10am
25
24
AD 728×90

Air Quality Index Trend

47h · 3 stn

Great Falls's air quality is primarily affected by vehicle emissions and industrial activity. Seasonal wildfire smoke and weather patterns can cause periodic air quality deterioration.

40.9%
Humidity
41.6 km/h
Wind NNE
1013.3 hPa
Pressure
10.9
UV Extreme
GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲
34
8.07 µg/m³
PM10
31
34.3 µg/m³
050100150200300500

What is the weather forecast for Great Falls?

Temperature & Precipitation

PM2.5 Trend

47h · 3 stations
PM2.58.07 µg/m³ ✓ WHO
Good
PM1034.3 µg/m³
Good
UV INDEX10.9
Extreme
AD 300×250
Station readings (9 stations within 25 km)
8.07
Median
8.28
Average
6.5
Low
9.6
High
PM2.5 µg/m³ · Model: 16.8 · Bias: +8.7

What is the 7-day forecast for Great Falls?

07-21
29.9° 22.0°
0.31 mm
07-22
29.7° 22.1°
07-23
29.0° 18.4°
3.56 mm
07-24
25.7° 18.9°
0.31 mm
07-25
23.8° 21.2°
5.56 mm
07-26
28.1° 20.1°
5.94 mm
07-27
25.9° 22.6°
0.13 mm
Both models agree Avg diff: 3.4°C

Where are air quality stations near Great Falls?

34
Ashburn - Broad Run High School, Northern Virginia, USA
17.6 km PM2.5: 8.2 µg/m³
34
3414 Nebraska Ave NW
19.0 km PM2.5: 8.1 µg/m³
53
Friendship Online
22.6 km PM2.5: 13.2 µg/m³
32
LAMB
22.6 km PM2.5: 7.6 µg/m³
35
Center City Brightwood Campus
22.8 km PM2.5: 8.5 µg/m³
40
GW Milken Institute School of Public Health
23.1 km PM2.5: 9.6 µg/m³
40
Aslin
24.0 km PM2.5: 9.5 µg/m³
38
Latin PCS 2nd St. Campus
24.2 km PM2.5: 9.1 µg/m³
38
Friendship Ideal
24.4 km PM2.5: 9.0 µg/m³
40
Center City Shaw Campus
25.1 km PM2.5: 9.6 µg/m³

What cities are near Great Falls?

29 Reston 35 Wolf Trap 36 Potomac 27 Herndon 30 North Potomac 37 Tysons 37 Vienna 37 McLean 27 Sterling 27 Oak Hill
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Data sources: AQI from ground-level monitoring stations via AQICN. Weather forecast from ECMWF (IFS & CAMS models). AQI calculated using US EPA standard. Updated 2026-07-21T20:10 UTC.