Montgomery County, Maryland, United States

Last updated: 11:50 PM CDT · Refresh

21°C

Feels like 23°

Overcast

▲ 29° / ▼ 17°

Wind

7 mph SSW

Humidity

94%

Dew Point

20°

Pressure

29.29 inHg

Visibility

9 mi

UV Index

0.0

Cloud Cover

86%

Sunrise

6:00 AM

Sunset

8:29 PM

Drag to pan · double-click to forecast a point

WeatherAI™ Analysis

WeatherAI Analysis: Montgomery County is currently overcast at 21°C. Dry conditions are expected through the next 24 hours. Atmospheric instability is elevated (CAPE up to 963 J/kg) — isolated convective development possible. Sunrise: 6:00AM · Sunset: 8:29PM.

35 AQI · Good Dominant: O3 Air Quality

Hourly Forecast · Next 24 Hours

Now

21°

35%

1 AM

22°

35%

2 AM

22°

33%

3 AM

21°

24%

4 AM

21°

33%

5 AM

20°

34%

6 AM

21°

32%

7 AM

22°

11%

8 AM

23°

16%

9 AM

24°

16%

10 AM

26°

17%

11 AM

27°

22%

12 PM

27°

22%

1 PM

28°

23%

2 PM

29°

23%

3 PM

28°

23%

4 PM

28°

24%

5 PM

28°

22%

6 PM

27°

18%

7 PM

26°

18%

8 PM

25°

19%

9 PM

24°

19%

10 PM

23°

19%

11 PM

23°

19%

7-Day Forecast

Today

29° 17°

Mostly Clear with a 35% chance of rain.

Thu

27° 17°

Clear.

Fri

29° 16°

Partly Cloudy.

Sat

28° 18°

Partly Cloudy.

Sun

31° 18°

Rain, 70% chance.

Mon

33° 20°

Rain, 71% chance.

Tue

34° 19°

Thunderstorm, 63% chance.

+ Feels like

TimeTempConditionsPrecipWindHumidity

Now 21° Overcast 35% 7 mph SSW 94%

1 AM 22° Overcast 35% 6 mph SW 95%

2 AM 22° Mostly Cloudy 33% 6 mph SW 95%

3 AM 21° Mostly Cloudy 24% 5 mph SSW 96%

4 AM 21° Partly Cloudy 33% 5 mph SSW 96%

5 AM 20° Partly Cloudy 34% 5 mph SW 96%

6 AM 21° Partly Cloudy 32% 5 mph SW 95%

7 AM 22° Partly Cloudy 11% 6 mph SW 93%

8 AM 23° Mostly Clear 16% 7 mph WSW 86%

9 AM 24° Mostly Clear 16% 9 mph W 77%

10 AM 26° Mostly Clear 17% 10 mph W 69%

11 AM 27° Mostly Clear 22% 11 mph W 63%

12 PM 27° Mostly Clear 22% 11 mph W 57%

1 PM 28° Mostly Clear 23% 12 mph W 52%

2 PM 29° Mostly Clear 23% 11 mph WNW 51%

3 PM 28° Mostly Clear 23% 11 mph WNW 51%

4 PM 28° Mostly Clear 24% 11 mph WNW 51%

5 PM 28° Mostly Clear 22% 9 mph WNW 54%

6 PM 27° Mostly Clear 18% 8 mph NW 59%

7 PM 26° Mostly Clear 18% 7 mph NW 62%

8 PM 25° Partly Cloudy 19% 7 mph NW 62%

9 PM 24° Partly Cloudy 19% 7 mph NNW 61%

10 PM 23° Partly Cloudy 19% 8 mph NNW 60%

11 PM 23° Partly Cloudy 19% 8 mph NNW 60%

15-Day Forecast

Today

7/22

Mostly Clear

35%

17°

29°

Thu

7/23

Clear

10%

17°

27°

Fri

7/24

Partly Cloudy

14%

16°

29°

Sat

7/25

Partly Cloudy

19%

18°

28°

Sun

7/26

Rain

70%

18°

31°

Mon

7/27

Rain

71%

20°

33°

Tue

7/28

Thunderstorm

63%

19°

34°

Wed

7/29

Rain

68%

18°

30°

Thu

7/30

Drizzle

44%

17°

29°

Fri

7/31

Drizzle

51%

17°

30°

Sat

8/1

Drizzle

60%

19°

31°

Sun

8/2

Drizzle

60%

20°

31°

Mon

8/3

Drizzle

60%

21°

32°

Tue

8/4

Drizzle

60%

21°

33°

Wed

8/5

Drizzle

60%

22°

32°

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

PM_2.5

Fine particulate matter

26 AQI 4.7 µg/m³

O₃

Ground-level ozone

Dominant

35 AQI 38 ppb

3-Day Outlook

DayAQICategoryO₃PM2.5

Today 35 Good 35 26

Thu 37 Good 37 11

Fri 35 Good 35 18

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 Wed Jul 22, 03:00'Z' · F0 · 130 (13 km CONUS/NA)

Hodograph · kt

0–1 1–3 3–6 6–9 km

Instability

SBCAPE7 J/kg

MLCAPE26 J/kg

MUCAPE7 J/kg

SBCIN-231 J/kg

MLCIN0 J/kg

Lifted Index-0.0

Kinematics

0–6 km Shear38 kt

0–1 km Shear31 kt

Eff. Shear—

0–1 km SRH20

0–3 km SRH11

Eff. SRH—

Storm Motion235° @ 34 kt

0–1 km EHI0.0

Composite Parameters

Sig. Tornado0.0

STP (eff)—

Supercell—

K-Index33.9

Thermo & Levels

PWAT1.75 in

0–3 km LR4.6 °C/km

700–500 LR5.4 °C/km

Total Totals43.4

LCL979 hPa

LFC688 hPa

EL484 hPa

Freezing Lvl14,764 ft

Montgomery County, Maryland, United States

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