Sterling, Virginia

Last updated: 8:20 PM CDT · Refresh

26°C

Feels like 29°

Mostly Cloudy

▲ 37° / ▼ 21°

Wind

6 mph SW

Humidity

73%

Dew Point

21°

Pressure

29.62 inHg

Visibility

9 mi

UV Index

0.0

Cloud Cover

78%

Sunrise

5:49 AM

Sunset

8:38 PM

Drag to pan · double-click to forecast a point

WeatherAI™ Analysis

WeatherAI Analysis: Sterling is currently mostly cloudy at 26°C. Precipitation is likely — peak probability 90% around 9 PM. Atmospheric instability is elevated (CAPE up to 1431 J/kg) — isolated convective development possible. Sunrise: 5:49AM · Sunset: 8:38PM.

60 AQI · Moderate Dominant: PM2.5 Air Quality

Hourly Forecast · Next 24 Hours

Now

26°

65%

10 PM

25°

71%

11 PM

24°

31%

12 AM

24°

30%

1 AM

24°

28%

2 AM

24°

11%

3 AM

23°

11%

4 AM

23°

11%

5 AM

21°

11%

6 AM

21°

7 AM

22°

8 AM

23°

18%

9 AM

26°

22%

10 AM

28°

30%

11 AM

29°

30%

12 PM

31°

40%

1 PM

34°

41%

2 PM

35°

48%

3 PM

35°

52%

4 PM

37°

53%

5 PM

34°

76%

6 PM

33°

76%

7 PM

31°

80%

8 PM

29°

81%

7-Day Forecast

Tonight

37° 21°

Mostly Cloudy with a 65% chance of rain.

Sun

37° 21°

Partly Cloudy with a 90% chance of rain.

Mon

31° 21°

Overcast with a 90% chance of rain.

Tue

30° 21°

Rain, 74% chance.

Wed

29° 19°

Clear with a 37% chance of rain.

Thu

33° 20°

Drizzle, 51% chance.

Fri

37° 21°

Rain, 71% chance.

+ Feels like

TimeTempConditionsPrecipWindHumidity

Now 26° Mostly Cloudy 65% 6 mph SW 73%

10 PM 25° Mostly Cloudy 71% 6 mph SW 81%

11 PM 24° Mostly Cloudy 31% 5 mph NW 83%

12 AM 24° Mostly Cloudy 30% 3 mph NNW 83%

1 AM 24° Mostly Cloudy 28% 3 mph W 83%

2 AM 24° Mostly Cloudy 11% 4 mph W 83%

3 AM 23° Mostly Cloudy 11% 3 mph W 85%

4 AM 23° Partly Cloudy 11% 3 mph W 88%

5 AM 21° Partly Cloudy 11% 3 mph W 89%

6 AM 21° Partly Cloudy 8% 2 mph WSW 87%

7 AM 22° Partly Cloudy 5% 2 mph ESE 84%

8 AM 23° Partly Cloudy 18% 3 mph ESE 80%

9 AM 26° Partly Cloudy 22% 3 mph ESE 73%

10 AM 28° Partly Cloudy 30% 3 mph ESE 66%

11 AM 29° Partly Cloudy 30% 4 mph ESE 59%

12 PM 31° Mostly Clear 40% 4 mph SE 53%

1 PM 34° Mostly Clear 41% 4 mph SSE 49%

2 PM 35° Mostly Clear 48% 4 mph SSE 47%

3 PM 35° Partly Cloudy 52% 4 mph SSE 47%

4 PM 37° Partly Cloudy 53% 5 mph SSE 47%

5 PM 34° Partly Cloudy 76% 5 mph SSE 49%

6 PM 33° Partly Cloudy 76% 6 mph SSE 58%

7 PM 31° Partly Cloudy 80% 7 mph SE 68%

8 PM 29° Mostly Cloudy 81% 7 mph SE 75%

15-Day Forecast

Today

7/4

Mostly Cloudy

65%

21°

37°

Sun

7/5

Partly Cloudy

90%

21°

37°

Mon

7/6

Overcast

90%

21°

31°

Tue

7/7

Rain

74%

21°

30°

Wed

7/8

Clear

37%

19°

29°

Thu

7/9

Drizzle

51%

20°

33°

Fri

7/10

Rain

71%

21°

37°

Sat

7/11

Drizzle

53%

19°

31°

Sun

7/12

Drizzle

44%

18°

31°

Mon

7/13

Drizzle

44%

17°

32°

Tue

7/14

Drizzle

60%

19°

34°

Wed

7/15

Drizzle

60%

20°

34°

Thu

7/16

Drizzle

60%

20°

34°

Fri

7/17

Drizzle

60%

19°

34°

Sat

7/18

Drizzle

60%

20°

34°

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

PM_2.5

Fine particulate matter

Dominant

60 AQI 14.0 µg/m³

O₃

Ground-level ozone

50 AQI 55 ppb

3-Day Outlook

DayAQICategoryO₃PM2.5

Today 60 Moderate 50 60

Mon 54 Moderate 44 54

Tue 47 Good 41 47

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 Sat Jul 4, 23:00'Z' · F0 · 130 (13 km CONUS/NA)

Hodograph · kt

0–1 1–3 3–6 6–9 km

Instability

SBCAPE446 J/kg

MLCAPE730 J/kg

MUCAPE894 J/kg

SBCIN-317 J/kg

MLCIN0 J/kg

Lifted Index-2.9

Kinematics

0–6 km Shear14 kt

0–1 km Shear17 kt

Eff. Shear11 kt

0–1 km SRH-51

0–3 km SRH-61

Eff. SRH-51

Storm Motion203° @ 27 kt

0–1 km EHI-0.1

Composite Parameters

Sig. Tornado0.0

STP (eff)0.0

Supercell0.0

K-Index36.7

Thermo & Levels

PWAT2.05 in

0–3 km LR5.6 °C/km

700–500 LR6.1 °C/km

Total Totals50.3

LCL924 hPa

LFC708 hPa

EL314 hPa

Freezing Lvl14,281 ft

Sterling, Virginia

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