Hagerstown, Maryland

Last updated: 12:00 AM CDT  ·  Refresh
20°C
Feels like 22°
Mostly Cloudy
▲ 27°  /  ▼ 13°
Wind
6 mph S
Humidity
95%
Dew Point
19°
Pressure
29.11 inHg
Visibility
10 mi
UV Index
0.0
Cloud Cover
65%
Sunrise
6:01 AM
Sunset
8:32 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Hagerstown is currently mostly cloudy at 20°C. Dry conditions are expected through the next 24 hours. Atmospheric instability is elevated (CAPE up to 832 J/kg) — isolated convective development possible. Sunrise: 6:01AM · Sunset: 8:32PM.

Alerts

No active alerts for this location.
55 AQI · Moderate Dominant: PM2.5 Air Quality
Hourly Forecast · Next 24 Hours
Now
20°
15%
2 AM
20°
20%
3 AM
20°
6%
4 AM
20°
6%
5 AM
20°
10%
6 AM
19°
23%
7 AM
19°
7%
8 AM
21°
7%
9 AM
22°
8%
10 AM
23°
16%
11 AM
24°
29%
12 PM
25°
29%
1 PM
26°
14%
2 PM
27°
11%
3 PM
27°
11%
4 PM
27°
12%
5 PM
27°
12%
6 PM
27°
7%
7 PM
25°
3%
8 PM
24°
3%
9 PM
23°
3%
10 PM
22°
3%
11 PM
21°
3%
12 AM
18°
3%
7-Day Forecast
Today
27° 13°
Mostly Clear.
Thu
27° 13°
Clear.
Fri
27° 13°
Partly Cloudy with a 32% chance of rain.
Sat
26° 16°
Partly Cloudy.
Sun
30° 16°
Rain, 70% chance.
Mon
33° 18°
Rain, 71% chance.
Tue
34° 17°
Thunderstorm, 63% chance.
TimeTempConditionsPrecipWindHumidity
Now 20° Mostly Cloudy 15% 6 mph S 95%
2 AM 20° Partly Cloudy 20% 6 mph S 95%
3 AM 20° Partly Cloudy 6% 4 mph S 96%
4 AM 20° Mostly Cloudy 6% 4 mph S 96%
5 AM 20° Partly Cloudy 10% 3 mph SSW 96%
6 AM 19° Mostly Clear 23% 4 mph SSW 95%
7 AM 19° Mostly Clear 7% 4 mph SW 94%
8 AM 21° Mostly Clear 7% 5 mph WSW 92%
9 AM 22° Mostly Clear 8% 6 mph W 83%
10 AM 23° Mostly Clear 16% 8 mph W 74%
11 AM 24° Mostly Clear 29% 10 mph W 65%
12 PM 25° Partly Cloudy 29% 10 mph W 61%
1 PM 26° Partly Cloudy 14% 10 mph W 58%
2 PM 27° Mostly Cloudy 11% 10 mph W 55%
3 PM 27° Partly Cloudy 11% 11 mph W 53%
4 PM 27° Partly Cloudy 12% 11 mph W 52%
5 PM 27° Mostly Clear 12% 12 mph WNW 50%
6 PM 27° Mostly Clear 7% 10 mph WNW 52%
7 PM 25° Mostly Clear 3% 9 mph WNW 56%
8 PM 24° Clear 3% 9 mph NW 58%
9 PM 23° Mostly Clear 3% 8 mph NW 61%
10 PM 22° Mostly Clear 3% 8 mph NW 65%
11 PM 21° Partly Cloudy 3% 8 mph NNW 68%
12 AM 18° Mostly Clear 3% 7 mph NNW 69%
15-Day Forecast
Today
7/22
Mostly Clear
16%
13°
27°
Thu
7/23
Clear
3%
13°
27°
Fri
7/24
Partly Cloudy
32%
13°
27°
Sat
7/25
Partly Cloudy
19%
16°
26°
Sun
7/26
Rain
70%
16°
30°
Mon
7/27
Rain
71%
18°
33°
Tue
7/28
Thunderstorm
63%
17°
34°
Wed
7/29
Drizzle
63%
16°
30°
Thu
7/30
Drizzle
44%
15°
29°
Fri
7/31
Clear
44%
15°
28°
Sat
8/1
Drizzle
60%
16°
29°
Sun
8/2
Drizzle
60%
16°
29°
Mon
8/3
Drizzle
60%
17°
30°
Tue
8/4
Drizzle
60%
18°
31°
Wed
8/5
Drizzle
60%
19°
30°
55
Moderate
U.S. Air Quality Index · Dominant: PM2.5
50 100 150 200

Air quality is acceptable. Unusually sensitive people should consider limiting prolonged outdoor exertion.

Pollutant Breakdown · Today
PM2.5
Fine particulate matter
Dominant
55 AQI 11.3 µg/m³
O3
Ground-level ozone
36 AQI 39 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Today 55 Moderate 36 55
Thu 36 Good 36 12
Fri 35 Good 35 23
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 Wed Jul 22, 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
MLCAPE30 J/kg
MUCAPE180 J/kg
SBCIN-6096 J/kg
MLCIN0 J/kg
Lifted Index1.5
Kinematics
0–6 km Shear40 kt
0–1 km Shear33 kt
Eff. Shear8 kt
0–1 km SRH-37
0–3 km SRH-15
Eff. SRH-8
Storm Motion233° @ 34 kt
0–1 km EHI-0.0
Composite Parameters
Sig. Tornado-0.0
STP (eff)0.0
Supercell0.0
K-Index31.2
Thermo & Levels
PWAT1.54 in
0–3 km LR4.3 °C/km
700–500 LR5.6 °C/km
Total Totals45.4
LCL971 hPa
LFC—
EL—
Freezing Lvl14,009 ft