Severe Thunderstorm Watch 11:00 PM Areal Flood Watch 7:00 AM

Montgomery County, Virginia, United States

Last updated: 10:33 PM CDT  ·  Refresh
23°C
Feels like 26°
Mostly Cloudy
▲ 28°  /  ▼ 19°
Wind
8 mph WSW
Humidity
85%
Dew Point
21°
Pressure
27.81 inHg
Visibility
10 mi
UV Index
0.0
Cloud Cover
73%
Sunrise
6:17 AM
Sunset
8:37 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Montgomery County is currently mostly cloudy at 24°C. Precipitation is likely — peak probability 88% around 2 AM. Atmospheric instability is elevated (CAPE up to 1052 J/kg) — isolated convective development possible. Sunrise: 6:17AM · Sunset: 8:37PM.

Alerts

Severe Thunderstorm Watch
Expires 11:00 PM
Areal Flood Watch
Expires 7:00 AM
47 AQI · Good Dominant: PM2.5 Air Quality
Hourly Forecast · Next 24 Hours
Now
23°
69%
12 AM
23°
70%
1 AM
22°
82%
2 AM
22°
87%
3 AM
22°
82%
4 AM
21°
82%
5 AM
19°
64%
6 AM
19°
50%
7 AM
20°
59%
8 AM
21°
53%
9 AM
22°
40%
10 AM
23°
41%
11 AM
24°
46%
12 PM
24°
47%
1 PM
26°
48%
2 PM
27°
48%
3 PM
27°
60%
4 PM
26°
64%
5 PM
27°
47%
6 PM
26°
43%
7 PM
24°
33%
8 PM
23°
30%
9 PM
22°
30%
10 PM
22°
31%
7-Day Forecast
Tonight
28° 19°
Mostly Cloudy with a 69% chance of rain.
Wed
27° 18°
Partly Cloudy with a 87% chance of rain.
Thu
24° 15°
Partly Cloudy with a 35% chance of rain.
Fri
24° 14°
Mostly Cloudy with a 73% chance of rain.
Sat
22° 17°
Drizzle, 54% chance.
Sun
29° 17°
Rain, 82% chance.
Mon
32° 18°
Rain, 64% chance.
TimeTempConditionsPrecipWindHumidity
Now 23° Mostly Cloudy 69% 8 mph WSW 85%
12 AM 23° Mostly Cloudy 70% 10 mph WSW 89%
1 AM 22° Mostly Cloudy 82% 9 mph WSW 92%
2 AM 22° Mostly Cloudy 87% 8 mph WSW 93%
3 AM 22° Rain 82% 8 mph WSW 94%
4 AM 21° Rain 82% 7 mph WSW 94%
5 AM 19° Partly Cloudy 64% 6 mph WSW 94%
6 AM 19° Partly Cloudy 50% 6 mph WSW 94%
7 AM 20° Partly Cloudy 59% 6 mph WSW 94%
8 AM 21° Partly Cloudy 53% 6 mph WSW 90%
9 AM 22° Mostly Cloudy 40% 7 mph W 83%
10 AM 23° Mostly Cloudy 41% 7 mph W 76%
11 AM 24° Mostly Cloudy 46% 7 mph W 70%
12 PM 24° Mostly Cloudy 47% 7 mph W 66%
1 PM 26° Partly Cloudy 48% 7 mph W 62%
2 PM 27° Partly Cloudy 48% 7 mph W 61%
3 PM 27° Partly Cloudy 60% 7 mph W 62%
4 PM 26° Rain 64% 7 mph W 64%
5 PM 27° Rain 47% 6 mph W 70%
6 PM 26° Partly Cloudy 43% 6 mph W 77%
7 PM 24° Mostly Cloudy 33% 6 mph WNW 83%
8 PM 23° Mostly Cloudy 30% 5 mph WNW 86%
9 PM 22° Partly Cloudy 30% 5 mph WNW 88%
10 PM 22° Partly Cloudy 31% 5 mph WNW 89%
15-Day Forecast
Today
7/21
Mostly Cloudy
69%
19°
28°
Wed
7/22
Partly Cloudy
87%
18°
27°
Thu
7/23
Partly Cloudy
35%
15°
24°
Fri
7/24
Mostly Cloudy
73%
14°
24°
Sat
7/25
Drizzle
54%
17°
22°
Sun
7/26
Rain
82%
17°
29°
Mon
7/27
Rain
64%
18°
32°
Tue
7/28
Rain
71%
17°
33°
Wed
7/29
Rain
69%
16°
28°
Thu
7/30
Drizzle
44%
15°
28°
Fri
7/31
Drizzle
60%
15°
30°
Sat
8/1
Drizzle
60%
16°
29°
Sun
8/2
Drizzle
60%
16°
27°
Mon
8/3
Drizzle
60%
17°
28°
Tue
8/4
Drizzle
60%
17°
29°
47
Good
U.S. Air Quality Index · Dominant: PM2.5
50 100 150 200

Air quality is satisfactory and poses little or no health risk.

Pollutant Breakdown · Today
PM2.5
Fine particulate matter
Dominant
47 AQI 8.4 µg/m³
O3
Ground-level ozone
38 AQI 42 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Today 47 Good 38 47
Thu 51 Moderate 35 51
Fri 44 Good 28 44
About the Air Quality Index
0–50 Good
51–100 Moderate
101–150 Unhealthy for Sensitive Groups
151–200 Unhealthy
201–300 Very Unhealthy
301–500 Hazardous

The U.S. AQI runs 0–500. The overall value equals the highest individual pollutant sub-index, and the dominant pollutant is the one driving it. PM2.5 (fine particles) is reported in µg/m³ and ozone (O3) in ppb. Forecast source: NWS NAQFC.

1000850700500400300250200150100 -40-30-20-10010203040 0.41247101624 LCLLFCEL0°C Temperature (°C) Pressure (hPa)
Temp Dewpoint Parcel (SB) CAPE CIN Dry adiabat Moist adiabat Mixing ratio
RAP
Valid Wed Jul 22, 02:00'Z' · F0 · 130 (13 km CONUS/NA)
Hodograph · kt
10 20 30 40 50 60 70 80 SM
0–1 1–3 3–6 6–9 km
Instability
SBCAPE1248 J/kg
MLCAPE1091 J/kg
MUCAPE1248 J/kg
SBCIN-10 J/kg
MLCIN0 J/kg
Lifted Index-3.2
Kinematics
0–6 km Shear36 kt
0–1 km Shear28 kt
Eff. Shear37 kt
0–1 km SRH-8
0–3 km SRH-18
Eff. SRH-18
Storm Motion236° @ 41 kt
0–1 km EHI-0.1
Composite Parameters
Sig. Tornado0.0
STP (eff)0.0
Supercell0.0
K-Index36.7
Thermo & Levels
PWAT2.02 in
0–3 km LR5.4 °C/km
700–500 LR5.6 °C/km
Total Totals46.8
LCL911 hPa
LFC819 hPa
EL167 hPa
Freezing Lvl13,812 ft