Delaware County, Pennsylvania, United States

Last updated: 1:14 AM CDT · Refresh

21°C

Feels like 23°

Overcast

▲ 32° / ▼ 22°

Wind

5 mph S

Humidity

92%

Dew Point

20°

Pressure

29.59 inHg

Visibility

10 mi

UV Index

0.0

Cloud Cover

91%

Sunrise

6:15 AM

Sunset

7:55 PM

Drag to pan · double-click to forecast a point

WeatherAI™ Analysis

WeatherAI Analysis: Delaware County is currently overcast at 21°C. Precipitation is likely — peak probability 78% around 2 AM. Atmospheric instability is elevated (CAPE up to 1336 J/kg) — isolated convective development possible. Sunrise: 6:15AM · Sunset: 7:55PM.

40 AQI · Good Dominant: PM2.5 Air Quality

Hourly Forecast · Next 24 Hours

Now

21°

77%

3 AM

21°

62%

4 AM

21°

48%

5 AM

21°

56%

6 AM

21°

25%

7 AM

21°

14%

8 AM

22°

9 AM

24°

10 AM

25°

11 AM

27°

16%

12 PM

28°

23%

1 PM

29°

28%

2 PM

30°

34%

3 PM

30°

34%

4 PM

30°

42%

5 PM

31°

39%

6 PM

30°

37%

7 PM

29°

27%

8 PM

29°

24%

9 PM

26°

21%

10 PM

26°

21%

11 PM

26°

11%

12 AM

25°

12%

1 AM

25°

7-Day Forecast

Today

32° 22°

Partly Cloudy with a 77% chance of rain.

Tue

31° 22°

Mostly Clear.

Wed

32° 21°

Mostly Clear.

Thu

31° 21°

Partly Cloudy with a 74% chance of rain.

Fri

29° 20°

Rain, 82% chance.

Sat

28° 20°

Rain, 82% chance.

Sun

30° 19°

Drizzle, 82% chance.

+ Feels like

TimeTempConditionsPrecipWindHumidity

Now 21° Overcast 77% 5 mph S 92%

3 AM 21° Overcast 62% 4 mph SSW 95%

4 AM 21° Overcast 48% 4 mph SSW 96%

5 AM 21° Overcast 56% 4 mph SW 97%

6 AM 21° Overcast 25% 4 mph WSW 96%

7 AM 21° Mostly Cloudy 14% 4 mph W 94%

8 AM 22° Partly Cloudy 3% 6 mph WNW 92%

9 AM 24° Partly Cloudy 4% 6 mph WNW 86%

10 AM 25° Partly Cloudy 8% 6 mph WNW 81%

11 AM 27° Partly Cloudy 16% 6 mph WNW 75%

12 PM 28° Partly Cloudy 23% 6 mph WNW 71%

1 PM 29° Partly Cloudy 28% 6 mph WNW 66%

2 PM 30° Partly Cloudy 34% 7 mph WNW 64%

3 PM 30° Mostly Clear 34% 6 mph WNW 64%

4 PM 30° Partly Cloudy 42% 7 mph W 65%

5 PM 31° Partly Cloudy 39% 7 mph W 67%

6 PM 30° Partly Cloudy 37% 6 mph W 70%

7 PM 29° Mostly Cloudy 27% 5 mph W 73%

8 PM 29° Mostly Cloudy 24% 4 mph W 76%

9 PM 26° Mostly Cloudy 21% 4 mph WNW 79%

10 PM 26° Mostly Cloudy 21% 4 mph WNW 82%

11 PM 26° Overcast 11% 4 mph WNW 84%

12 AM 25° Mostly Cloudy 12% 4 mph NW 85%

1 AM 25° Mostly Cloudy 3% 5 mph NW 86%

15-Day Forecast

Today

8/17

Partly Cloudy

77%

22°

32°

Tue

8/18

Mostly Clear

22°

31°

Wed

8/19

Mostly Clear

14%

21°

32°

Thu

8/20

Partly Cloudy

74%

21°

31°

Fri

8/21

Rain

82%

20°

29°

Sat

8/22

Rain

82%

20°

28°

Sun

8/23

Drizzle

82%

19°

30°

Mon

8/24

Drizzle

43%

18°

29°

Tue

8/25

Drizzle

44%

16°

30°

Wed

8/26

Clear

60%

19°

30°

Thu

8/27

Clear

60%

19°

30°

Fri

8/28

Drizzle

60%

18°

29°

Sat

8/29

Drizzle

60%

17°

29°

Sun

8/30

Drizzle

60%

17°

29°

Mon

8/31

Clear

60%

17°

29°

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

40 AQI 7.2 µg/m³

O₃

Ground-level ozone

30 AQI 32 ppb

3-Day Outlook

DayAQICategoryO₃PM2.5

Today 40 Good 30 40

Tue 49 Good 44 49

Wed 57 Moderate 49 57

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 Mon Aug 17, 05:00'Z' · F0 · 130 (13 km CONUS/NA)

Hodograph · kt

0–1 1–3 3–6 6–9 km

Instability

SBCAPE2 J/kg

MLCAPE15 J/kg

MUCAPE101 J/kg

SBCIN0 J/kg

MLCIN0 J/kg

Lifted Index2.5

Kinematics

0–6 km Shear21 kt

0–1 km Shear25 kt

Eff. Shear5 kt

0–1 km SRH171

0–3 km SRH171

Eff. SRH17

Storm Motion297° @ 22 kt

0–1 km EHI0.0

Composite Parameters

Sig. Tornado0.0

STP (eff)0.0

Supercell0.0

K-Index36.2

Thermo & Levels

PWAT2.34 in

0–3 km LR3.9 °C/km

700–500 LR5.4 °C/km

Total Totals43.2

LCL984 hPa

LFC1002 hPa

EL976 hPa

Freezing Lvl15,344 ft

Delaware County, Pennsylvania, United States

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