Areal Flood Warning — Montgomery County, PA, Philadelphia County, PA 12:45 AM Areal Flood Watch 1:00 AM

Montgomery County, Pennsylvania, United States

Last updated: 11:32 PM CDT  ·  Refresh
18°C
Feels like 18°
Partly Cloudy
▲ 27°  /  ▼ 18°
Wind
7 mph N
Humidity
91%
Dew Point
16°
Pressure
29.74 inHg
Visibility
10 mi
UV Index
0.0
Cloud Cover
42%
Sunrise
6:18 AM
Sunset
7:49 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Montgomery County is currently partly cloudy at 18°C. Precipitation is likely — peak probability 50% around 12 AM. Sunrise: 6:18AM · Sunset: 7:49PM.

Alerts

Areal Flood Warning
Montgomery County, PA, Philadelphia County, PA
Expires 12:45 AM
Areal Flood Watch
Expires 1:00 AM
35 AQI · Good Dominant: O3 Air Quality
Hourly Forecast · Next 24 Hours
Now
18°
3%
1 AM
17°
14%
2 AM
17°
7%
3 AM
16°
14%
4 AM
16°
14%
5 AM
15°
14%
6 AM
16°
15%
7 AM
16°
15%
8 AM
17°
15%
9 AM
19°
15%
10 AM
20°
16%
11 AM
22°
16%
12 PM
23°
16%
1 PM
25°
8%
2 PM
26°
3%
3 PM
26°
3%
4 PM
26°
3%
5 PM
26°
3%
6 PM
25°
3%
7 PM
23°
3%
8 PM
23°
11%
9 PM
21°
25%
10 PM
21°
29%
11 PM
19°
29%
7-Day Forecast
Today
27° 18°
Mostly Clear.
Sat
24° 18°
Fog with a 74% chance of rain.
Sun
28° 18°
Mostly Cloudy with a 64% chance of rain.
Mon
27° 15°
Partly Cloudy.
Tue
28° 17°
Rain, 61% chance.
Wed
29° 17°
Rain, 71% chance.
Thu
28° 18°
Rain, 82% chance.
TimeTempConditionsPrecipWindHumidity
Now 18° Partly Cloudy 3% 7 mph N 91%
1 AM 17° Clear 14% 6 mph NNW 92%
2 AM 17° Clear 7% 6 mph NNW 92%
3 AM 16° Mostly Clear 14% 6 mph NNW 92%
4 AM 16° Mostly Clear 14% 6 mph NNW 92%
5 AM 15° Mostly Clear 14% 6 mph NNW 90%
6 AM 16° Mostly Clear 15% 6 mph NNW 87%
7 AM 16° Clear 15% 6 mph NNW 84%
8 AM 17° Clear 15% 7 mph N 79%
9 AM 19° Mostly Clear 15% 7 mph N 74%
10 AM 20° Mostly Clear 16% 7 mph N 69%
11 AM 22° Mostly Clear 16% 6 mph N 64%
12 PM 23° Mostly Clear 16% 6 mph NNE 61%
1 PM 25° Clear 8% 5 mph NNE 57%
2 PM 26° Mostly Clear 3% 4 mph NNE 56%
3 PM 26° Mostly Clear 3% 4 mph NE 56%
4 PM 26° Partly Cloudy 3% 4 mph NE 57%
5 PM 26° Partly Cloudy 3% 4 mph NE 59%
6 PM 25° Partly Cloudy 3% 4 mph NE 63%
7 PM 23° Partly Cloudy 3% 4 mph NE 66%
8 PM 23° Mostly Clear 11% 4 mph NE 70%
9 PM 21° Mostly Clear 25% 3 mph NE 74%
10 PM 21° Clear 29% 3 mph ENE 79%
11 PM 19° Mostly Clear 29% 3 mph E 82%
15-Day Forecast
Today
8/21
Mostly Clear
16%
18°
27°
Sat
8/22
Fog
74%
18°
24°
Sun
8/23
Mostly Cloudy
64%
18°
28°
Mon
8/24
Partly Cloudy
8%
15°
27°
Tue
8/25
Rain
61%
17°
28°
Wed
8/26
Rain
71%
17°
29°
Thu
8/27
Rain
82%
18°
28°
Fri
8/28
Rain
82%
19°
30°
Sat
8/29
Rain
68%
19°
30°
Sun
8/30
Drizzle
68%
19°
30°
Mon
8/31
Drizzle
60%
18°
29°
Tue
9/1
Drizzle
60%
18°
28°
Wed
9/2
Drizzle
60%
18°
28°
Thu
9/3
Drizzle
60%
18°
27°
Fri
9/4
Drizzle
60%
17°
28°
35
Good
U.S. Air Quality Index · Dominant: O3
50 100 150 200

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

Pollutant Breakdown · Today
PM2.5
Fine particulate matter
33 AQI 6.0 µg/m³
O3
Ground-level ozone
Dominant
35 AQI 38 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Today 35 Good 35 33
Sat 45 Good 45 24
Sun 39 Good 29 39
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 LCL0°C Temperature (°C) Pressure (hPa)
Temp Dewpoint Parcel (SB) CAPE CIN Dry adiabat Moist adiabat Mixing ratio
RAP
Valid Fri Aug 21, 03:00'Z' · F0 · 130 (13 km CONUS/NA)
Hodograph · kt
10 20 30 40 50 60 70 SM
0–1 1–3 3–6 6–9 km
Instability
SBCAPE0 J/kg
MLCAPE4 J/kg
MUCAPE0 J/kg
SBCIN—
MLCIN0 J/kg
Lifted Index6.1
Kinematics
0–6 km Shear23 kt
0–1 km Shear17 kt
Eff. Shear—
0–1 km SRH-38
0–3 km SRH27
Eff. SRH—
Storm Motion332° @ 28 kt
0–1 km EHI-0.0
Composite Parameters
Sig. Tornado0.0
STP (eff)—
Supercell—
K-Index27.0
Thermo & Levels
PWAT1.51 in
0–3 km LR3.2 °C/km
700–500 LR5.9 °C/km
Total Totals42.4
LCL988 hPa
LFC—
EL—
Freezing Lvl14,751 ft