Heat Advisory — Huntingdon, PA, Mifflin, PA, Juniata, PA, Fulton, PA, Franklin, PA, Perry, PA, Dauphin, PA, Lebanon, PA, Cumberland, PA, Adams, PA, York, PA, Lancaster, PA 7:00 PM Areal Flood Watch 11:00 PM

York, Pennsylvania

Last updated: 4:49 AM CDT  ·  Refresh
21°C
Feels like 24°
Overcast
▲ 30°  /  ▼ 21°
Wind
4 mph W
Humidity
96%
Dew Point
20°
Pressure
29.52 inHg
Visibility
9 mi
UV Index
0.0
Cloud Cover
90%
Sunrise
6:36 AM
Sunset
7:35 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: York is currently overcast at 21°C. Precipitation is likely — peak probability 61% around 12 AM. Atmospheric instability is elevated (CAPE up to 2549 J/kg) — isolated convective development possible. Sunrise: 6:36AM · Sunset: 7:35PM.

Alerts

Heat Advisory
Huntingdon, PA, Mifflin, PA, Juniata, PA, Fulton, PA, Franklin, PA, Perry, PA, Dauphin, PA, Lebanon, PA, Cumberland, PA, Adams, PA, York, PA, Lancaster, PA
Expires 7:00 PM
Areal Flood Watch
Expires 11:00 PM
52 AQI · Moderate Dominant: PM2.5 Air Quality
Hourly Forecast · Next 24 Hours
Now
21°
38%
6 AM
20°
43%
7 AM
21°
41%
8 AM
22°
27%
9 AM
22°
29%
10 AM
24°
28%
11 AM
25°
23%
12 PM
27°
23%
1 PM
29°
17%
2 PM
29°
29%
3 PM
29°
36%
4 PM
29°
37%
5 PM
30°
45%
6 PM
29°
45%
7 PM
27°
45%
8 PM
27°
46%
9 PM
25°
42%
10 PM
24°
38%
11 PM
24°
60%
12 AM
23°
61%
1 AM
23°
53%
2 AM
23°
53%
3 AM
23°
58%
4 AM
23°
58%
7-Day Forecast
Today
30° 21°
Partly Cloudy with a 60% chance of rain.
Fri
29° 20°
Partly Cloudy with a 53% chance of rain.
Sat
24° 16°
Overcast.
Sun
23° 13°
Mostly Clear with a 21% chance of rain.
Mon
24° 13°
Clear.
Tue
26° 13°
Clear.
Wed
27° 17°
Rain, 27% chance.
TimeTempConditionsPrecipWindHumidity
Now 21° Overcast 38% 4 mph W 96%
6 AM 20° Mostly Cloudy 43% 3 mph WNW 95%
7 AM 21° Partly Cloudy 41% 4 mph SW 95%
8 AM 22° Partly Cloudy 27% 5 mph SW 92%
9 AM 22° Partly Cloudy 29% 6 mph SW 86%
10 AM 24° Mostly Cloudy 28% 7 mph WSW 81%
11 AM 25° Partly Cloudy 23% 7 mph WSW 75%
12 PM 27° Mostly Clear 23% 8 mph WSW 70%
1 PM 29° Clear 17% 8 mph W 65%
2 PM 29° Mostly Clear 29% 8 mph W 64%
3 PM 29° Mostly Clear 36% 8 mph WNW 64%
4 PM 29° Partly Cloudy 37% 9 mph NW 63%
5 PM 30° Partly Cloudy 45% 7 mph WNW 68%
6 PM 29° Partly Cloudy 45% 5 mph WNW 74%
7 PM 27° Partly Cloudy 45% 5 mph W 79%
8 PM 27° Partly Cloudy 46% 5 mph SW 82%
9 PM 25° Partly Cloudy 42% 5 mph SSW 84%
10 PM 24° Mostly Cloudy 38% 6 mph SSW 86%
11 PM 24° Mostly Cloudy 60% 6 mph SSW 88%
12 AM 23° Partly Cloudy 61% 5 mph SW 90%
1 AM 23° Partly Cloudy 53% 5 mph SW 91%
2 AM 23° Drizzle 53% 5 mph WSW 92%
3 AM 23° Rain 58% 6 mph W 93%
4 AM 23° Rain 58% 6 mph WNW 93%
15-Day Forecast
Today
9/3
Partly Cloudy
60%
21°
30°
Fri
9/4
Partly Cloudy
53%
20°
29°
Sat
9/5
Overcast
17%
16°
24°
Sun
9/6
Mostly Clear
21%
13°
23°
Mon
9/7
Clear
8%
13°
24°
Tue
9/8
Clear
17%
13°
26°
Wed
9/9
Rain
27%
17°
27°
Thu
9/10
Drizzle
43%
17°
31°
Fri
9/11
Drizzle
44%
13°
24°
Sat
9/12
Drizzle
51%
12°
24°
Sun
9/13
Drizzle
60%
17°
28°
Mon
9/14
Drizzle
60%
16°
27°
Tue
9/15
Clear
25%
14°
26°
Wed
9/16
Drizzle
60%
13°
24°
Thu
9/17
Drizzle
60%
14°
25°
52
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
PM2.5
Fine particulate matter
Dominant
52 AQI 9.4 µg/m³
O3
Ground-level ozone
41 AQI 44 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Today 52 Moderate 41 52
Fri 50 Good 42 50
Sat 42 Good 38 42
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. PM2.5 (fine particles) is reported in µg/m³ and ozone (O3) in ppb. Forecast source: NWS NAQFC.

1000850700500400300250200150100 -40-30-20-10010203040 0.41247101624 LCLLFCEL0°C Temperature (°C) Pressure (hPa)
Temp Dewpoint Parcel (SB) CAPE CIN Dry adiabat Moist adiabat Mixing ratio
RAP
Valid Thu Sep 3, 08:00'Z' · F0 · 130 (13 km CONUS/NA)
Hodograph · kt
10 20 30 40 50 SM
0–1 1–3 3–6 6–9 km
Instability
SBCAPE89 J/kg
MLCAPE299 J/kg
MUCAPE868 J/kg
SBCIN-273 J/kg
MLCIN-125 J/kg
Lifted Index-1.7
Kinematics
0–6 km Shear39 kt
0–1 km Shear17 kt
Eff. Shear42 kt
0–1 km SRH127
0–3 km SRH146
Eff. SRH133
Storm Motion305° @ 29 kt
0–1 km EHI0.1
Composite Parameters
Sig. Tornado0.1
STP (eff)0.1
Supercell2.5
K-Index33.2
Thermo & Levels
PWAT1.79 in
0–3 km LR3.9 °C/km
700–500 LR6.8 °C/km
Total Totals51.5
LCL991 hPa
LFC588 hPa
EL444 hPa
Freezing Lvl14,583 ft