Ulster County, New York, United States

Last updated: 8:00 PM CDT  ·  Refresh
20°C
Feels like 22°
Rain
▲ 22°  /  ▼ 16°
Wind
4 mph SSW
Humidity
96%
Dew Point
20°
Pressure
28.73 inHg
Visibility
9 mi
UV Index
0.0
Cloud Cover
93%
Sunrise
5:40 AM
Sunset
8:26 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Ulster County is currently rain at 20°C. Precipitation is likely — peak probability 74% around 10 PM. Atmospheric instability is elevated (CAPE up to 500 J/kg) — isolated convective development possible. Sunrise: 5:40AM · Sunset: 8:26PM.

Alerts

No active alerts for this location.
79 AQI · Moderate Dominant: PM2.5 Air Quality
Hourly Forecast · Next 24 Hours
Now
20°
67%
10 PM
19°
73%
11 PM
19°
59%
12 AM
19°
38%
1 AM
19°
48%
2 AM
19°
42%
3 AM
19°
29%
4 AM
19°
17%
5 AM
17°
17%
6 AM
18°
21%
7 AM
18°
16%
8 AM
19°
11%
9 AM
21°
15%
10 AM
21°
15%
11 AM
22°
15%
12 PM
22°
5%
1 PM
23°
3%
2 PM
24°
3%
3 PM
23°
3%
4 PM
24°
3%
5 PM
25°
3%
6 PM
24°
3%
7 PM
23°
3%
8 PM
21°
3%
7-Day Forecast
Tonight
22° 16°
Rain, 67% chance.
Wed
25° 14°
Partly Cloudy with a 38% chance of rain.
Thu
26° 10°
Mostly Clear.
Fri
27° 11°
Mostly Clear.
Sat
26° 13°
Clear.
Sun
27° 14°
Drizzle, 70% chance.
Mon
29° 16°
Rain, 71% chance.
TimeTempConditionsPrecipWindHumidity
Now 20° Rain 67% 4 mph SSW 96%
10 PM 19° Rain 73% 5 mph SW 97%
11 PM 19° Overcast 59% 5 mph SSW 97%
12 AM 19° Overcast 38% 5 mph SSW 97%
1 AM 19° Rain 48% 6 mph SSW 97%
2 AM 19° Mostly Cloudy 42% 5 mph SSW 96%
3 AM 19° Mostly Cloudy 29% 6 mph SSW 96%
4 AM 19° Mostly Cloudy 17% 6 mph SW 95%
5 AM 17° Mostly Cloudy 17% 6 mph SW 94%
6 AM 18° Mostly Cloudy 21% 7 mph SW 91%
7 AM 18° Partly Cloudy 16% 6 mph SW 89%
8 AM 19° Partly Cloudy 11% 7 mph WSW 86%
9 AM 21° Mostly Clear 15% 7 mph WSW 79%
10 AM 21° Mostly Clear 15% 8 mph WSW 73%
11 AM 22° Mostly Clear 15% 9 mph W 67%
12 PM 22° Mostly Clear 5% 10 mph W 62%
1 PM 23° Mostly Clear 3% 11 mph W 57%
2 PM 24° Clear 3% 11 mph W 52%
3 PM 23° Clear 3% 11 mph W 50%
4 PM 24° Mostly Clear 3% 11 mph W 49%
5 PM 25° Mostly Clear 3% 10 mph W 48%
6 PM 24° Mostly Clear 3% 9 mph W 52%
7 PM 23° Partly Cloudy 3% 9 mph W 56%
8 PM 21° Partly Cloudy 3% 7 mph WNW 59%
15-Day Forecast
Today
7/21
Rain
67%
16°
22°
Wed
7/22
Partly Cloudy
38%
14°
25°
Thu
7/23
Mostly Clear
3%
10°
26°
Fri
7/24
Mostly Clear
3%
11°
27°
Sat
7/25
Clear
8%
13°
26°
Sun
7/26
Drizzle
70%
14°
27°
Mon
7/27
Rain
71%
16°
29°
Tue
7/28
Rain
63%
15°
23°
Wed
7/29
Rain
69%
13°
24°
Thu
7/30
Drizzle
51%
13°
26°
Fri
7/31
Drizzle
60%
14°
29°
Sat
8/1
Drizzle
60%
14°
29°
Sun
8/2
Drizzle
60%
14°
25°
Mon
8/3
Drizzle
60%
16°
24°
Tue
8/4
Drizzle
60%
16°
26°
79
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
79 AQI 23.9 µg/m³
O3
Ground-level ozone
40 AQI 43 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Today 79 Moderate 40 79
Thu 31 Good 29 31
Fri 31 Good 31 24
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 Tue Jul 21, 23:00'Z' · F0 · 130 (13 km CONUS/NA)
Hodograph · kt
10 20 30 40 50 60 70 80 90 SM
0–1 1–3 3–6 6–9 km
Instability
SBCAPE133 J/kg
MLCAPE366 J/kg
MUCAPE486 J/kg
SBCIN-80 J/kg
MLCIN0 J/kg
Lifted Index-0.4
Kinematics
0–6 km Shear44 kt
0–1 km Shear21 kt
Eff. Shear33 kt
0–1 km SRH-21
0–3 km SRH-69
Eff. SRH-69
Storm Motion212° @ 38 kt
0–1 km EHI-0.0
Composite Parameters
Sig. Tornado0.0
STP (eff)0.0
Supercell0.0
K-Index35.9
Thermo & Levels
PWAT1.73 in
0–3 km LR5.0 °C/km
700–500 LR5.1 °C/km
Total Totals45.1
LCL966 hPa
LFC786 hPa
EL389 hPa
Freezing Lvl13,514 ft