Flood Advisory — Alamance County, NC, Durham County, NC, Orange County, NC 9:15 PM Areal Flood Watch 7:00 AM

Durham, North Carolina

Last updated: 6:34 PM CDT  ·  Refresh
24°C
Feels like 27°
Overcast
▲ 26°  /  ▼ 19°
Wind
6 mph E
Humidity
89%
Dew Point
22°
Pressure
29.60 inHg
Visibility
8 mi
UV Index
0.4
Cloud Cover
98%
Sunrise
6:38 AM
Sunset
7:57 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Durham is currently overcast at 24°C. Precipitation is likely — peak probability 74% around 7 PM. Atmospheric instability is elevated (CAPE up to 1148 J/kg) — isolated convective development possible. Sunrise: 6:38AM · Sunset: 7:57PM.

Alerts

Flood Advisory
Alamance County, NC, Durham County, NC, Orange County, NC
Expires 9:15 PM
Areal Flood Watch
Expires 7:00 AM
47 AQI · Good Dominant: O3 Air Quality
Hourly Forecast · Next 24 Hours
Now
24°
74%
8 PM
24°
71%
9 PM
23°
70%
10 PM
22°
69%
11 PM
22°
60%
12 AM
22°
44%
1 AM
22°
38%
2 AM
22°
35%
3 AM
22°
32%
4 AM
22°
39%
5 AM
19°
36%
6 AM
20°
36%
7 AM
20°
49%
8 AM
21°
49%
9 AM
22°
49%
10 AM
23°
49%
11 AM
23°
49%
12 PM
24°
49%
1 PM
25°
45%
2 PM
27°
50%
3 PM
27°
50%
4 PM
27°
50%
5 PM
27°
40%
6 PM
27°
34%
7-Day Forecast
Tonight
26° 19°
Overcast with a 74% chance of rain.
Sat
29° 19°
Partly Cloudy with a 49% chance of rain.
Sun
30° 20°
Clear.
Mon
29° 18°
Mostly Clear with a 53% chance of rain.
Tue
31° 16°
Partly Cloudy with a 37% chance of rain.
Wed
32° 19°
Heavy Rain, 80% chance.
Thu
31° 20°
Rain, 83% chance.
TimeTempConditionsPrecipWindHumidity
Now 24° Overcast 74% 6 mph E 89%
8 PM 24° Heavy Rain 71% 4 mph ESE 93%
9 PM 23° Heavy Rain 70% 3 mph E 94%
10 PM 22° Rain 69% 4 mph ESE 94%
11 PM 22° Overcast 60% 4 mph SSE 94%
12 AM 22° Overcast 44% 4 mph SSE 94%
1 AM 22° Overcast 38% 3 mph SSE 94%
2 AM 22° Overcast 35% 3 mph SSE 94%
3 AM 22° Overcast 32% 2 mph SSE 94%
4 AM 22° Overcast 39% 2 mph ESE 94%
5 AM 19° Overcast 36% 2 mph SE 94%
6 AM 20° Mostly Cloudy 36% 2 mph SSE 93%
7 AM 20° Mostly Cloudy 49% 2 mph SSE 92%
8 AM 21° Mostly Cloudy 49% 3 mph SSE 88%
9 AM 22° Mostly Cloudy 49% 3 mph SSE 83%
10 AM 23° Mostly Cloudy 49% 3 mph S 77%
11 AM 23° Mostly Cloudy 49% 4 mph S 74%
12 PM 24° Mostly Cloudy 49% 4 mph SSW 70%
1 PM 25° Mostly Cloudy 45% 4 mph SW 68%
2 PM 27° Mostly Cloudy 50% 5 mph SW 66%
3 PM 27° Partly Cloudy 50% 5 mph SW 64%
4 PM 27° Partly Cloudy 50% 5 mph SW 63%
5 PM 27° Partly Cloudy 40% 5 mph SSW 64%
6 PM 27° Mostly Clear 34% 5 mph SSW 68%
15-Day Forecast
Today
8/21
Overcast
74%
19°
26°
Sat
8/22
Partly Cloudy
49%
19°
29°
Sun
8/23
Clear
12%
20°
30°
Mon
8/24
Mostly Clear
53%
18°
29°
Tue
8/25
Partly Cloudy
37%
16°
31°
Wed
8/26
Heavy Rain
80%
19°
32°
Thu
8/27
Rain
83%
20°
31°
Fri
8/28
Rain
63%
21°
32°
Sat
8/29
Rain
66%
19°
33°
Sun
8/30
Rain
72%
19°
33°
Mon
8/31
Drizzle
56%
20°
36°
Tue
9/1
Drizzle
60%
23°
34°
Wed
9/2
Drizzle
60%
23°
32°
Thu
9/3
Drizzle
60%
22°
32°
Fri
9/4
Drizzle
60%
22°
32°
47
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
42 AQI 7.6 µg/m³
O3
Ground-level ozone
Dominant
47 AQI 51 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Sat 47 Good 47 42
Sun 38 Good 38 27
Mon 36 Good 36 32
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, 22:00'Z' · F0 · 130 (13 km CONUS/NA)
Hodograph · kt
10 20 30 40 SM
0–1 1–3 3–6 6–9 km
Instability
SBCAPE859 J/kg
MLCAPE759 J/kg
MUCAPE955 J/kg
SBCIN-14 J/kg
MLCIN-13 J/kg
Lifted Index-4.2
Kinematics
0–6 km Shear23 kt
0–1 km Shear9 kt
Eff. Shear20 kt
0–1 km SRH50
0–3 km SRH90
Eff. SRH90
Storm Motion296° @ 15 kt
0–1 km EHI0.3
Composite Parameters
Sig. Tornado0.0
STP (eff)0.0
Supercell0.9
K-Index37.9
Thermo & Levels
PWAT2.27 in
0–3 km LR5.3 °C/km
700–500 LR6.0 °C/km
Total Totals48.4
LCL972 hPa
LFC859 hPa
EL241 hPa
Freezing Lvl13,921 ft