Union County, Pennsylvania, United States

Last updated: 3:54 AM CDT · Refresh

19°C

Feels like 22°

Mostly Cloudy

▲ 31° / ▼ 19°

Wind

4 mph S

Humidity

97%

Dew Point

19°

Pressure

29.03 inHg

Visibility

2 mi

UV Index

0.0

Cloud Cover

82%

Sunrise

6:37 AM

Sunset

7:37 PM

Drag to pan · double-click to forecast a point

WeatherAI™ Analysis

WeatherAI Analysis: Union County is currently mostly cloudy at 19°C. Precipitation is likely — peak probability 87% around 4 AM. Atmospheric instability is elevated (CAPE up to 2662 J/kg) — isolated convective development possible. Sunrise: 6:37AM · Sunset: 7:37PM.

43 AQI · Good Dominant: PM2.5 Air Quality

Hourly Forecast · Next 24 Hours

Now

19°

87%

5 AM

18°

73%

6 AM

18°

64%

7 AM

19°

30%

8 AM

20°

19%

9 AM

21°

19%

10 AM

23°

19%

11 AM

24°

29%

12 PM

26°

29%

1 PM

29°

37%

2 PM

29°

41%

3 PM

29°

37%

4 PM

28°

37%

5 PM

29°

60%

6 PM

28°

81%

7 PM

26°

81%

8 PM

25°

71%

9 PM

23°

78%

10 PM

22°

71%

11 PM

22°

47%

12 AM

21°

53%

1 AM

21°

53%

2 AM

21°

52%

3 AM

21°

52%

7-Day Forecast

Today

31° 19°

Partly Cloudy with a 87% chance of rain.

Fri

28° 17°

Partly Cloudy with a 49% chance of rain.

Sat

24° 13°

Partly Cloudy.

Sun

22° 11°

Mostly Cloudy.

Mon

24° 11°

Clear.

Tue

26° 11°

Drizzle, 43% chance.

Wed

26° 16°

Rain, 63% chance.

+ Feels like

TimeTempConditionsPrecipWindHumidity

Now 19° Mostly Cloudy 87% 4 mph S 97%

5 AM 18° Rain 73% 3 mph SSW 97%

6 AM 18° Rain 64% 4 mph SSW 97%

7 AM 19° Mostly Cloudy 30% 5 mph SSW 97%

8 AM 20° Mostly Cloudy 19% 5 mph SW 93%

9 AM 21° Mostly Cloudy 19% 6 mph SW 87%

10 AM 23° Partly Cloudy 19% 6 mph WSW 81%

11 AM 24° Mostly Clear 29% 6 mph WSW 76%

12 PM 26° Mostly Clear 29% 7 mph W 70%

1 PM 29° Partly Cloudy 37% 8 mph W 66%

2 PM 29° Mostly Cloudy 41% 8 mph W 64%

3 PM 29° Mostly Cloudy 37% 9 mph W 64%

4 PM 28° Mostly Cloudy 37% 9 mph W 64%

5 PM 29° Overcast 60% 8 mph W 66%

6 PM 28° Mostly Cloudy 81% 7 mph W 71%

7 PM 26° Rain 81% 7 mph WSW 74%

8 PM 25° Rain 71% 6 mph WSW 79%

9 PM 23° Mostly Cloudy 78% 6 mph WSW 84%

10 PM 22° Mostly Cloudy 71% 6 mph W 90%

11 PM 22° Mostly Cloudy 47% 5 mph W 92%

12 AM 21° Mostly Cloudy 53% 4 mph W 92%

1 AM 21° Partly Cloudy 53% 4 mph W 93%

2 AM 21° Partly Cloudy 52% 4 mph W 93%

3 AM 21° Partly Cloudy 52% 4 mph W 93%

15-Day Forecast

Today

9/3

Partly Cloudy

87%

19°

31°

Fri

9/4

Partly Cloudy

49%

17°

28°

Sat

9/5

Partly Cloudy

13°

24°

Sun

9/6

Mostly Cloudy

11°

22°

Mon

9/7

Clear

11°

24°

Tue

9/8

Drizzle

43%

11°

26°

Wed

9/9

Rain

63%

16°

26°

Thu

9/10

Drizzle

43%

14°

31°

Fri

9/11

Clear

44%

10°

24°

Sat

9/12

Drizzle

51%

10°

23°

Sun

9/13

Drizzle

60%

14°

27°

Mon

9/14

Drizzle

60%

13°

26°

Tue

9/15

Clear

25%

12°

24°

Wed

9/16

Drizzle

60%

11°

24°

Thu

9/17

Drizzle

60%

12°

24°

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

43 AQI 7.8 µg/m³

O₃

Ground-level ozone

37 AQI 40 ppb

3-Day Outlook

DayAQICategoryO₃PM2.5

Today 43 Good 37 43

Fri 36 Good 33 36

Sat 31 Good 31 27

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 Thu Sep 3, 07:00'Z' · F0 · 130 (13 km CONUS/NA)

Hodograph · kt

0–1 1–3 3–6 6–9 km

Instability

SBCAPE18 J/kg

MLCAPE149 J/kg

MUCAPE688 J/kg

SBCIN-268 J/kg

MLCIN-128 J/kg

Lifted Index-0.4

Kinematics

0–6 km Shear41 kt

0–1 km Shear11 kt

Eff. Shear35 kt

0–1 km SRH37

0–3 km SRH75

Eff. SRH62

Storm Motion311° @ 27 kt

0–1 km EHI0.0

Composite Parameters

Sig. Tornado0.0

STP (eff)0.0

Supercell0.8

K-Index40.5

Thermo & Levels

PWAT2.14 in

0–3 km LR3.9 °C/km

700–500 LR6.5 °C/km

Total Totals50.0

LCL977 hPa

LFC571 hPa

EL471 hPa

Freezing Lvl13,579 ft

Union County, Pennsylvania, United States

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