Delaware County, Pennsylvania, United States

Last updated: 4:24 PM CDT · Refresh

27°C

Feels like 30°

Overcast

▲ 29° / ▼ 21°

Wind

7 mph SW

Humidity

83%

Dew Point

23°

Pressure

29.47 inHg

Visibility

10 mi

UV Index

2.6

Cloud Cover

92%

Sunrise

5:50 AM

Sunset

8:25 PM

Drag to pan · double-click to forecast a point

WeatherAI™ Analysis

WeatherAI Analysis: Delaware County is currently overcast at 27°C. Precipitation is likely — peak probability 90% around 6 PM. Atmospheric instability is elevated (CAPE up to 1726 J/kg) — isolated convective development possible. Sunrise: 5:50AM · Sunset: 8:25PM.

74 AQI · Moderate Dominant: PM2.5 Air Quality

Hourly Forecast · Next 24 Hours

Now

27°

70%

6 PM

26°

90%

7 PM

26°

63%

8 PM

26°

53%

9 PM

24°

54%

10 PM

24°

52%

11 PM

24°

53%

12 AM

24°

69%

1 AM

23°

60%

2 AM

23°

49%

3 AM

23°

49%

4 AM

22°

50%

5 AM

21°

50%

6 AM

22°

51%

7 AM

22°

51%

8 AM

23°

60%

9 AM

24°

56%

10 AM

26°

39%

11 AM

26°

35%

12 PM

27°

35%

1 PM

27°

29%

2 PM

27°

24%

3 PM

28°

24%

4 PM

28°

22%

7-Day Forecast

Today

29° 21°

Overcast with a 70% chance of rain.

Wed

31° 20°

Rain, 60% chance.

Thu

29° 18°

Mostly Clear.

Fri

29° 18°

Partly Cloudy.

Sat

30° 17°

Clear.

Sun

31° 18°

Rain, 81% chance.

Mon

31° 20°

Drizzle, 60% chance.

+ Feels like

TimeTempConditionsPrecipWindHumidity

Now 27° Overcast 70% 7 mph SW 83%

6 PM 26° Overcast 90% 7 mph SSW 91%

7 PM 26° Overcast 63% 9 mph S 93%

8 PM 26° Overcast 53% 10 mph SSW 93%

9 PM 24° Overcast 54% 8 mph SSW 93%

10 PM 24° Overcast 52% 8 mph SSW 92%

11 PM 24° Rain 53% 8 mph SSW 92%

12 AM 24° Overcast 69% 9 mph SSW 91%

1 AM 23° Overcast 60% 9 mph SSW 90%

2 AM 23° Mostly Cloudy 49% 9 mph SSW 90%

3 AM 23° Mostly Cloudy 49% 10 mph SSW 91%

4 AM 22° Mostly Cloudy 50% 9 mph SSW 93%

5 AM 21° Partly Cloudy 50% 9 mph SSW 93%

6 AM 22° Partly Cloudy 51% 8 mph SW 90%

7 AM 22° Rain 51% 9 mph SW 88%

8 AM 23° Rain 60% 9 mph WSW 84%

9 AM 24° Mostly Clear 56% 9 mph WSW 78%

10 AM 26° Mostly Clear 39% 10 mph W 70%

11 AM 26° Mostly Clear 35% 10 mph W 67%

12 PM 27° Mostly Clear 35% 10 mph W 68%

1 PM 27° Mostly Clear 29% 10 mph W 69%

2 PM 27° Mostly Clear 24% 9 mph W 68%

3 PM 28° Mostly Clear 24% 10 mph W 64%

4 PM 28° Mostly Clear 22% 10 mph W 60%

15-Day Forecast

Today

7/21

Overcast

70%

21°

29°

Wed

7/22

Rain

60%

20°

31°

Thu

7/23

Mostly Clear

18°

29°

Fri

7/24

Partly Cloudy

18°

29°

Sat

7/25

Clear

19%

17°

30°

Sun

7/26

Rain

81%

18°

31°

Mon

7/27

Drizzle

60%

20°

31°

Tue

7/28

Drizzle

60%

19°

30°

Wed

7/29

Drizzle

60%

19°

29°

Thu

7/30

Drizzle

60%

19°

32°

Fri

7/31

Drizzle

60%

20°

30°

Sat

8/1

Drizzle

60%

20°

30°

Sun

8/2

Drizzle

60%

20°

31°

Mon

8/3

Drizzle

60%

21°

31°

Tue

8/4

Drizzle

60%

21°

32°

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

74 AQI 21.5 µg/m³

O₃

Ground-level ozone

37 AQI 41 ppb

3-Day Outlook

DayAQICategoryO₃PM2.5

Wed 74 Moderate 37 74

Thu 54 Moderate 43 54

Fri 54 Moderate 49 54

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 Tue Jul 21, 20:00'Z' · F0 · 130 (13 km CONUS/NA)

Hodograph · kt

0–1 1–3 3–6 6–9 km

Instability

SBCAPE2222 J/kg

MLCAPE1642 J/kg

MUCAPE2222 J/kg

SBCIN-2 J/kg

MLCIN0 J/kg

Lifted Index-5.4

Kinematics

0–6 km Shear38 kt

0–1 km Shear15 kt

Eff. Shear38 kt

0–1 km SRH-37

0–3 km SRH-89

Eff. SRH-89

Storm Motion211° @ 33 kt

0–1 km EHI-0.5

Composite Parameters

Sig. Tornado0.0

STP (eff)0.0

Supercell0.0

K-Index34.1

Thermo & Levels

PWAT2.21 in

0–3 km LR6.4 °C/km

700–500 LR5.2 °C/km

Total Totals47.7

LCL951 hPa

LFC953 hPa

EL174 hPa

Freezing Lvl14,042 ft

Delaware County, Pennsylvania, United States

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