Severe Thunderstorm Watch 12:00 AM Areal Flood Watch 7:00 AM

Montgomery County, Virginia, United States

Last updated: 11:47 PM CDT  ·  Refresh
23°C
Feels like 24°
Mostly Cloudy
▲ 27°  /  ▼ 17°
Wind
8 mph WSW
Humidity
89%
Dew Point
21°
Pressure
27.82 inHg
Visibility
10 mi
UV Index
0.0
Cloud Cover
73%
Sunrise
6:18 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 23°C. Precipitation is likely — peak probability 88% around 2 AM. Atmospheric instability is elevated (CAPE up to 864 J/kg) — isolated convective development possible. Sunrise: 6:18AM · Sunset: 8:37PM.

Alerts

Severe Thunderstorm Watch
Expires 12:00 AM
Areal Flood Watch
Expires 7:00 AM
47 AQI · Good Dominant: PM2.5 Air Quality
Hourly Forecast · Next 24 Hours
Now
23°
69%
1 AM
22°
82%
2 AM
22°
88%
3 AM
22°
81%
4 AM
21°
76%
5 AM
19°
63%
6 AM
20°
64%
7 AM
20°
52%
8 AM
21°
62%
9 AM
22°
53%
10 AM
23°
54%
11 AM
23°
45%
12 PM
24°
59%
1 PM
26°
59%
2 PM
26°
48%
3 PM
26°
60%
4 PM
26°
56%
5 PM
26°
47%
6 PM
25°
42%
7 PM
24°
33%
8 PM
23°
30%
9 PM
22°
30%
10 PM
22°
30%
11 PM
21°
45%
7-Day Forecast
Today
27° 17°
Mostly Cloudy with a 81% chance of rain.
Thu
24° 15°
Mostly Cloudy with a 50% chance of rain.
Fri
24° 14°
Mostly Cloudy with a 72% chance of rain.
Sat
22° 17°
Drizzle, 60% chance.
Sun
29° 17°
Rain, 82% chance.
Mon
32° 18°
Rain, 64% chance.
Tue
34° 17°
Rain, 71% chance.
TimeTempConditionsPrecipWindHumidity
Now 23° Mostly Cloudy 69% 8 mph WSW 89%
1 AM 22° Mostly Cloudy 82% 8 mph WSW 94%
2 AM 22° Mostly Cloudy 88% 8 mph WSW 94%
3 AM 22° Rain 81% 8 mph WSW 94%
4 AM 21° Rain 76% 7 mph W 94%
5 AM 19° Rain 63% 5 mph WSW 94%
6 AM 20° Partly Cloudy 64% 6 mph WSW 94%
7 AM 20° Partly Cloudy 52% 6 mph WSW 94%
8 AM 21° Mostly Cloudy 62% 6 mph WSW 89%
9 AM 22° Rain 53% 7 mph WSW 82%
10 AM 23° Mostly Cloudy 54% 6 mph WSW 74%
11 AM 23° Mostly Cloudy 45% 7 mph WSW 70%
12 PM 24° Mostly Cloudy 59% 7 mph WSW 66%
1 PM 26° Partly Cloudy 59% 7 mph WSW 61%
2 PM 26° Partly Cloudy 48% 7 mph WSW 61%
3 PM 26° Partly Cloudy 60% 7 mph WSW 62%
4 PM 26° Rain 56% 7 mph WSW 65%
5 PM 26° Mostly Cloudy 47% 6 mph WSW 72%
6 PM 25° Mostly Cloudy 42% 6 mph W 79%
7 PM 24° Mostly Cloudy 33% 6 mph W 84%
8 PM 23° Mostly Cloudy 30% 5 mph W 87%
9 PM 22° Partly Cloudy 30% 5 mph W 88%
10 PM 22° Partly Cloudy 30% 4 mph W 89%
11 PM 21° Partly Cloudy 45% 4 mph W 88%
15-Day Forecast
Today
7/22
Mostly Cloudy
81%
17°
27°
Thu
7/23
Mostly Cloudy
50%
15°
24°
Fri
7/24
Mostly Cloudy
72%
14°
24°
Sat
7/25
Drizzle
60%
17°
22°
Sun
7/26
Rain
82%
17°
29°
Mon
7/27
Rain
64%
18°
32°
Tue
7/28
Rain
71%
17°
34°
Wed
7/29
Rain
69%
16°
28°
Thu
7/30
Rain
66%
15°
28°
Fri
7/31
Drizzle
51%
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°
Wed
8/5
Drizzle
60%
18°
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, 03:00'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
SBCAPE811 J/kg
MLCAPE849 J/kg
MUCAPE980 J/kg
SBCIN-55 J/kg
MLCIN0 J/kg
Lifted Index-3.1
Kinematics
0–6 km Shear36 kt
0–1 km Shear28 kt
Eff. Shear36 kt
0–1 km SRH-30
0–3 km SRH-42
Eff. SRH-42
Storm Motion236° @ 41 kt
0–1 km EHI-0.2
Composite Parameters
Sig. Tornado0.0
STP (eff)0.0
Supercell0.0
K-Index33.7
Thermo & Levels
PWAT1.80 in
0–3 km LR5.1 °C/km
700–500 LR5.9 °C/km
Total Totals47.3
LCL915 hPa
LFC747 hPa
EL195 hPa
Freezing Lvl13,543 ft