Union County, Pennsylvania, United States

Last updated: 2:50 AM CDT · Refresh

19°C

Feels like 22°

Rain

▲ 31° / ▼ 19°

Wind

4 mph SSE

Humidity

98%

Dew Point

19°

Pressure

29.02 inHg

Visibility

6 mi

UV Index

0.0

Cloud Cover

87%

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 rain at 20°C. Precipitation is likely — peak probability 87% around 3 AM. Atmospheric instability is elevated (CAPE up to 2668 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%

4 AM

19°

81%

5 AM

18°

73%

6 AM

18°

49%

7 AM

19°

23%

8 AM

20°

19%

9 AM

21°

29%

10 AM

23°

29%

11 AM

24°

43%

12 PM

26°

37%

1 PM

29°

45%

2 PM

29°

44%

3 PM

29°

40%

4 PM

28°

38%

5 PM

28°

60%

6 PM

27°

69%

7 PM

27°

70%

8 PM

26°

70%

9 PM

23°

71%

10 PM

22°

53%

11 PM

22°

28%

12 AM

22°

34%

1 AM

22°

35%

2 AM

22°

35%

7-Day Forecast

Today

31° 19°

Mostly Cloudy with a 87% chance of rain.

Fri

28° 17°

Partly Cloudy with a 49% chance of rain.

Sat

24° 13°

Mostly 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° Rain 87% 4 mph SSE 98%

4 AM 19° Rain 81% 4 mph WSW 97%

5 AM 18° Rain 73% 3 mph S 97%

6 AM 18° Mostly Cloudy 49% 4 mph SSW 97%

7 AM 19° Partly Cloudy 23% 4 mph SW 97%

8 AM 20° Partly Cloudy 19% 5 mph SW 92%

9 AM 21° Partly Cloudy 29% 5 mph SW 87%

10 AM 23° Partly Cloudy 29% 6 mph WSW 81%

11 AM 24° Partly Cloudy 43% 6 mph WSW 75%

12 PM 26° Mostly Clear 37% 7 mph W 70%

1 PM 29° Partly Cloudy 45% 8 mph W 65%

2 PM 29° Mostly Cloudy 44% 9 mph W 64%

3 PM 29° Mostly Cloudy 40% 9 mph W 64%

4 PM 28° Mostly Cloudy 38% 9 mph W 64%

5 PM 28° Overcast 60% 8 mph W 67%

6 PM 27° Overcast 69% 7 mph W 71%

7 PM 27° Rain 70% 7 mph WSW 75%

8 PM 26° Rain 70% 7 mph W 80%

9 PM 23° Overcast 71% 6 mph W 85%

10 PM 22° Overcast 53% 5 mph W 91%

11 PM 22° Mostly Cloudy 28% 5 mph WSW 92%

12 AM 22° Mostly Cloudy 34% 4 mph W 93%

1 AM 22° Mostly Cloudy 35% 4 mph W 93%

2 AM 22° Partly Cloudy 35% 4 mph W 93%

15-Day Forecast

Today

9/3

Mostly Cloudy

87%

19°

31°

Fri

9/4

Partly Cloudy

49%

17°

28°

Sat

9/5

Mostly 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°

32°

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, 06:00'Z' · F0 · 130 (13 km CONUS/NA)

Hodograph · kt

0–1 1–3 3–6 6–9 km

Instability

SBCAPE70 J/kg

MLCAPE208 J/kg

MUCAPE1375 J/kg

SBCIN-226 J/kg

MLCIN-124 J/kg

Lifted Index-0.7

Kinematics

0–6 km Shear43 kt

0–1 km Shear10 kt

Eff. Shear44 kt

0–1 km SRH73

0–3 km SRH138

Eff. SRH116

Storm Motion303° @ 26 kt

0–1 km EHI0.0

Composite Parameters

Sig. Tornado0.0

STP (eff)0.1

Supercell3.6

K-Index40.4

Thermo & Levels

PWAT2.10 in

0–3 km LR4.2 °C/km

700–500 LR6.3 °C/km

Total Totals50.8

LCL977 hPa

LFC627 hPa

EL483 hPa

Freezing Lvl13,264 ft

Union County, Pennsylvania, United States

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