Johnston County, North Carolina, United States

Last updated: 5:23 PM CDT · Refresh

24°C

Feels like 26°

Overcast

▲ 27° / ▼ 20°

Wind

8 mph SSE

Humidity

88%

Dew Point

23°

Pressure

29.81 inHg

Visibility

8 mi

UV Index

1.3

Cloud Cover

98%

Sunrise

6:37 AM

Sunset

7:55 PM

Drag to pan · double-click to forecast a point

WeatherAI™ Analysis

WeatherAI Analysis: Johnston County is currently overcast at 24°C. Precipitation is likely — peak probability 86% around 7 PM. Atmospheric instability is elevated (CAPE up to 1427 J/kg) — isolated convective development possible. Sunrise: 6:37AM · Sunset: 7:55PM.

42 AQI · Good Dominant: PM2.5 Air Quality

Hourly Forecast · Next 24 Hours

Now

24°

77%

7 PM

24°

86%

8 PM

24°

69%

9 PM

23°

73%

10 PM

22°

62%

11 PM

22°

69%

12 AM

22°

74%

1 AM

22°

77%

2 AM

22°

71%

3 AM

22°

66%

4 AM

21°

54%

5 AM

20°

46%

6 AM

20°

54%

7 AM

21°

54%

8 AM

21°

58%

9 AM

22°

58%

10 AM

22°

54%

11 AM

23°

62%

12 PM

24°

62%

1 PM

27°

66%

2 PM

27°

66%

3 PM

27°

66%

4 PM

27°

62%

5 PM

27°

48%

7-Day Forecast

Tonight

27° 20°

Overcast with a 77% chance of rain.

Sat

29° 20°

Mostly Cloudy with a 74% chance of rain.

Sun

31° 21°

Mostly Clear with a 49% chance of rain.

Mon

31° 19°

Mostly Clear with a 53% chance of rain.

Tue

29° 19°

Mostly Cloudy with a 45% chance of rain.

Wed

30° 20°

Rain, 69% chance.

Thu

31° 21°

Rain, 83% chance.

+ Feels like

TimeTempConditionsPrecipWindHumidity

Now 24° Overcast 77% 8 mph SSE 88%

7 PM 24° Overcast 86% 6 mph E 92%

8 PM 24° Heavy Rain 69% 4 mph E 94%

9 PM 23° Overcast 73% 3 mph E 96%

10 PM 22° Overcast 62% 4 mph SE 96%

11 PM 22° Rain 69% 5 mph SE 96%

12 AM 22° Heavy Rain 74% 4 mph SSE 96%

1 AM 22° Rain 77% 4 mph S 96%

2 AM 22° Rain 71% 3 mph S 96%

3 AM 22° Overcast 66% 2 mph SSE 96%

4 AM 21° Overcast 54% 2 mph ESE 96%

5 AM 20° Mostly Cloudy 46% 2 mph E 96%

6 AM 20° Mostly Cloudy 54% 2 mph ESE 95%

7 AM 21° Mostly Cloudy 54% 2 mph E 94%

8 AM 21° Mostly Cloudy 58% 3 mph ESE 94%

9 AM 22° Mostly Cloudy 58% 3 mph SE 92%

10 AM 22° Overcast 54% 3 mph SSE 91%

11 AM 23° Overcast 62% 3 mph S 88%

12 PM 24° Overcast 62% 4 mph S 82%

1 PM 27° Overcast 66% 5 mph SSW 77%

2 PM 27° Mostly Cloudy 66% 5 mph SSW 74%

3 PM 27° Mostly Cloudy 66% 5 mph SSW 73%

4 PM 27° Mostly Cloudy 62% 5 mph SSW 72%

5 PM 27° Partly Cloudy 48% 5 mph SSW 73%

15-Day Forecast

Today

8/21

Overcast

77%

20°

27°

Sat

8/22

Mostly Cloudy

74%

20°

29°

Sun

8/23

Mostly Clear

49%

21°

31°

Mon

8/24

Mostly Clear

53%

19°

31°

Tue

8/25

Mostly Cloudy

45%

19°

29°

Wed

8/26

Rain

69%

20°

30°

Thu

8/27

Rain

83%

21°

31°

Fri

8/28

Rain

74%

21°

31°

Sat

8/29

Drizzle

54%

21°

29°

Sun

8/30

Drizzle

54%

20°

32°

Mon

8/31

Drizzle

64%

19°

32°

Tue

9/1

Drizzle

60%

23°

33°

Wed

9/2

Drizzle

60%

22°

32°

Thu

9/3

Drizzle

60%

21°

31°

Fri

9/4

Drizzle

60%

21°

31°

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

PM_2.5

Fine particulate matter

Dominant

42 AQI 7.5 µg/m³

O₃

Ground-level ozone

39 AQI 43 ppb

3-Day Outlook

DayAQICategoryO₃PM2.5

Sat 42 Good 39 42

Sun 36 Good 33 36

Mon 41 Good 33 41

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. PM_2.5 (fine particles) is reported in µg/m³ and ozone (O₃) in ppb. Forecast source: NWS NAQFC.

Temp Dewpoint Parcel (SB) CAPE CIN Dry adiabat Moist adiabat Mixing ratio

RAP

Valid Fri Aug 21, 21:00'Z' · F0 · 130 (13 km CONUS/NA)

Hodograph · kt

0–1 1–3 3–6 6–9 km

Instability

SBCAPE716 J/kg

MLCAPE708 J/kg

MUCAPE1089 J/kg

SBCIN-24 J/kg

MLCIN-24 J/kg

Lifted Index-3.0

Kinematics

0–6 km Shear20 kt

0–1 km Shear19 kt

Eff. Shear20 kt

0–1 km SRH127

0–3 km SRH136

Eff. SRH136

Storm Motion262° @ 20 kt

0–1 km EHI0.6

Composite Parameters

Sig. Tornado0.0

STP (eff)0.0

Supercell1.5

K-Index35.7

Thermo & Levels

PWAT2.29 in

0–3 km LR4.8 °C/km

700–500 LR5.8 °C/km

Total Totals46.7

LCL989 hPa

LFC823 hPa

EL218 hPa

Freezing Lvl14,642 ft

Johnston County, North Carolina, United States

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