Howard County, Maryland, United States

Last updated: 10:25 PM CDT  ·  Refresh
19°C
Feels like 19°
Clear
▲ 29°  /  ▼ 16°
Wind
8 mph N
Humidity
86%
Dew Point
17°
Pressure
29.59 inHg
Visibility
10 mi
UV Index
0.0
Cloud Cover
6%
Sunrise
6:25 AM
Sunset
7:56 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Howard County is currently clear at 19°C. Precipitation is likely — peak probability 55% around 11 PM. Sunrise: 6:25AM · Sunset: 7:56PM.

Alerts

No active alerts for this location.
47 AQI · Good Dominant: PM2.5 Air Quality
Hourly Forecast · Next 24 Hours
Now
19°
3%
12 AM
18°
21%
1 AM
18°
14%
2 AM
18°
3%
3 AM
17°
3%
4 AM
17°
3%
5 AM
16°
3%
6 AM
16°
3%
7 AM
16°
3%
8 AM
17°
3%
9 AM
19°
3%
10 AM
21°
3%
11 AM
22°
5%
12 PM
23°
5%
1 PM
25°
5%
2 PM
26°
10%
3 PM
26°
11%
4 PM
27°
24%
5 PM
27°
24%
6 PM
25°
25%
7 PM
24°
25%
8 PM
23°
25%
9 PM
22°
26%
10 PM
22°
35%
7-Day Forecast
Tonight
29° 16°
Clear.
Fri
27° 16°
Partly Cloudy with a 55% chance of rain.
Sat
24° 19°
Overcast with a 77% chance of rain.
Sun
29° 18°
Partly Cloudy with a 37% chance of rain.
Mon
28° 17°
Clear.
Tue
29° 18°
Rain, 61% chance.
Wed
29° 19°
Rain, 82% chance.
TimeTempConditionsPrecipWindHumidity
Now 19° Clear 3% 8 mph N 86%
12 AM 18° Clear 21% 8 mph N 89%
1 AM 18° Clear 14% 6 mph N 91%
2 AM 18° Mostly Clear 3% 6 mph NNW 92%
3 AM 17° Mostly Clear 3% 6 mph NNW 92%
4 AM 17° Partly Cloudy 3% 6 mph NNW 91%
5 AM 16° Partly Cloudy 3% 6 mph NNW 92%
6 AM 16° Partly Cloudy 3% 7 mph NNW 90%
7 AM 16° Partly Cloudy 3% 7 mph N 87%
8 AM 17° Partly Cloudy 3% 8 mph N 83%
9 AM 19° Partly Cloudy 3% 7 mph N 77%
10 AM 21° Mostly Clear 3% 7 mph N 70%
11 AM 22° Mostly Clear 5% 6 mph N 65%
12 PM 23° Mostly Clear 5% 5 mph N 59%
1 PM 25° Partly Cloudy 5% 4 mph N 54%
2 PM 26° Partly Cloudy 10% 4 mph NNE 50%
3 PM 26° Mostly Clear 11% 4 mph NNE 50%
4 PM 27° Mostly Clear 24% 4 mph NNE 50%
5 PM 27° Mostly Clear 24% 4 mph NNE 51%
6 PM 25° Mostly Clear 25% 4 mph NE 55%
7 PM 24° Partly Cloudy 25% 3 mph NE 58%
8 PM 23° Partly Cloudy 25% 3 mph NE 62%
9 PM 22° Partly Cloudy 26% 3 mph NE 64%
10 PM 22° Partly Cloudy 35% 3 mph NE 67%
15-Day Forecast
Today
8/20
Clear
3%
16°
29°
Fri
8/21
Partly Cloudy
55%
16°
27°
Sat
8/22
Overcast
77%
19°
24°
Sun
8/23
Partly Cloudy
37%
18°
29°
Mon
8/24
Clear
3%
17°
28°
Tue
8/25
Rain
61%
18°
29°
Wed
8/26
Rain
82%
19°
29°
Thu
8/27
Rain
82%
19°
28°
Fri
8/28
Rain
68%
19°
31°
Sat
8/29
Rain
68%
20°
31°
Sun
8/30
Clear
60%
20°
31°
Mon
8/31
Drizzle
60%
20°
30°
Tue
9/1
Drizzle
60%
19°
29°
Wed
9/2
Drizzle
60%
19°
29°
Thu
9/3
Drizzle
60%
19°
28°
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
44 AQI 47 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Today 47 Good 44 47
Sat 44 Good 44 34
Sun 33 Good 29 33
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 Fri Aug 21, 01:00'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
MLCAPE7 J/kg
MUCAPE0 J/kg
SBCIN0 J/kg
MLCIN0 J/kg
Lifted Index5.8
Kinematics
0–6 km Shear24 kt
0–1 km Shear13 kt
Eff. Shear—
0–1 km SRH-28
0–3 km SRH93
Eff. SRH—
Storm Motion323° @ 26 kt
0–1 km EHI-0.0
Composite Parameters
Sig. Tornado0.0
STP (eff)—
Supercell—
K-Index25.1
Thermo & Levels
PWAT1.40 in
0–3 km LR3.9 °C/km
700–500 LR5.3 °C/km
Total Totals38.0
LCL967 hPa
LFC1002 hPa
EL999 hPa
Freezing Lvl14,446 ft