Severe Thunderstorm Watch 11:00 PM Areal Flood Watch 1:00 AM

Baltimore County, Maryland, United States

Last updated: 10:30 PM CDT  ·  Refresh
22°C
Feels like 23°
Haze
▲ 31°  /  ▼ 21°
Wind
8 mph SSW
Humidity
94%
Dew Point
21°
Pressure
29.30 inHg
Visibility
1 mi
UV Index
0.0
Cloud Cover
94%
Sunrise
5:56 AM
Sunset
8:28 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Baltimore County is currently haze at 22°C. Dry conditions are expected through the next 24 hours. Atmospheric instability is elevated (CAPE up to 1051 J/kg) — isolated convective development possible. Sunrise: 5:56AM · Sunset: 8:28PM.

Alerts

Severe Thunderstorm Watch
Expires 11:00 PM
Areal Flood Watch
Expires 1:00 AM
43 AQI · Good Dominant: PM2.5 Air Quality
Hourly Forecast · Next 24 Hours
Now
22°
25%
12 AM
21°
23%
1 AM
21°
26%
2 AM
21°
17%
3 AM
21°
18%
4 AM
21°
19%
5 AM
21°
28%
6 AM
21°
32%
7 AM
21°
22%
8 AM
22°
8%
9 AM
24°
5%
10 AM
25°
13%
11 AM
26°
24%
12 PM
26°
33%
1 PM
28°
20%
2 PM
28°
20%
3 PM
28°
20%
4 PM
28°
18%
5 PM
27°
18%
6 PM
26°
18%
7 PM
25°
19%
8 PM
24°
19%
9 PM
23°
19%
10 PM
22°
19%
7-Day Forecast
Tonight
31° 21°
Haze with a 25% chance of rain.
Wed
30° 19°
Mostly Clear with a 28% chance of rain.
Thu
28° 17°
Clear.
Fri
29° 16°
Overcast.
Sat
28° 17°
Mostly Clear.
Sun
31° 18°
Rain, 70% chance.
Mon
32° 20°
Rain, 71% chance.
TimeTempConditionsPrecipWindHumidity
Now 22° Haze 25% 8 mph SSW 94%
12 AM 21° Overcast 23% 9 mph SSW 93%
1 AM 21° Overcast 26% 9 mph SW 92%
2 AM 21° Mostly Cloudy 17% 8 mph SW 92%
3 AM 21° Partly Cloudy 18% 8 mph SW 93%
4 AM 21° Partly Cloudy 19% 7 mph SW 94%
5 AM 21° Partly Cloudy 28% 6 mph SW 93%
6 AM 21° Mostly Clear 32% 7 mph SW 92%
7 AM 21° Mostly Clear 22% 7 mph WSW 90%
8 AM 22° Mostly Clear 8% 8 mph WSW 86%
9 AM 24° Mostly Clear 5% 8 mph W 78%
10 AM 25° Mostly Clear 13% 10 mph W 71%
11 AM 26° Mostly Clear 24% 10 mph W 66%
12 PM 26° Mostly Clear 33% 11 mph W 62%
1 PM 28° Mostly Clear 20% 12 mph W 57%
2 PM 28° Mostly Clear 20% 12 mph W 54%
3 PM 28° Mostly Clear 20% 12 mph W 52%
4 PM 28° Mostly Clear 18% 12 mph W 51%
5 PM 27° Mostly Clear 18% 11 mph WNW 52%
6 PM 26° Mostly Clear 18% 9 mph WNW 55%
7 PM 25° Mostly Clear 19% 8 mph NW 59%
8 PM 24° Mostly Clear 19% 8 mph NW 60%
9 PM 23° Mostly Clear 19% 9 mph NW 59%
10 PM 22° Mostly Clear 19% 9 mph NNW 58%
15-Day Forecast
Today
7/21
Haze
25%
21°
31°
Wed
7/22
Mostly Clear
28%
19°
30°
Thu
7/23
Clear
3%
17°
28°
Fri
7/24
Overcast
14%
16°
29°
Sat
7/25
Mostly Clear
19%
17°
28°
Sun
7/26
Rain
70%
18°
31°
Mon
7/27
Rain
71%
20°
32°
Tue
7/28
Thunderstorm
63%
19°
32°
Wed
7/29
Drizzle
44%
18°
30°
Thu
7/30
Drizzle
44%
18°
29°
Fri
7/31
Drizzle
60%
17°
29°
Sat
8/1
Drizzle
60%
18°
29°
Sun
8/2
Drizzle
60%
19°
29°
Mon
8/3
Drizzle
60%
19°
31°
Tue
8/4
Drizzle
60%
20°
32°
43
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
43 AQI 7.8 µg/m³
O3
Ground-level ozone
39 AQI 42 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Today 43 Good 39 43
Thu 38 Good 38 16
Fri 38 Good 38 27
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
SBCAPE130 J/kg
MLCAPE109 J/kg
MUCAPE309 J/kg
SBCIN-136 J/kg
MLCIN0 J/kg
Lifted Index-1.2
Kinematics
0–6 km Shear35 kt
0–1 km Shear22 kt
Eff. Shear30 kt
0–1 km SRH-45
0–3 km SRH-61
Eff. SRH-61
Storm Motion228° @ 35 kt
0–1 km EHI-0.0
Composite Parameters
Sig. Tornado0.0
STP (eff)0.0
Supercell0.0
K-Index35.0
Thermo & Levels
PWAT1.98 in
0–3 km LR4.3 °C/km
700–500 LR6.1 °C/km
Total Totals47.2
LCL978 hPa
LFC620 hPa
EL361 hPa
Freezing Lvl14,534 ft