Heat Advisory — Williams, ND, Mountrail, ND, McKenzie, ND, Dunn, ND, Mercer, ND, Oliver, ND, Golden Valley, ND, Billings, ND, Stark, ND, Burleigh, ND, Hettinger, ND, Grant, ND, Emmons, ND, Western McLean, ND, Eastern McLean, ND, Western Morton, ND, Eastern Morton, ND, Western Sioux, ND, Eastern Sioux, ND, McHenry, ND, Pierce, ND, Sheridan, ND, Wells, ND, Foster, ND, Kidder, ND, Stutsman, ND, Adams, ND, Logan, ND, La Moure, ND, McIntosh, ND, Dickey, ND, Central and Southern Ward/Minot Area, ND 8:00 PM

Greenwich, Connecticut

Last updated: 5:18 PM CDT  ·  Refresh
24°C
Feels like 26°
Mostly Cloudy
▲ 27°  /  ▼ 18°
Wind
5 mph NW
Humidity
79%
Dew Point
19°
Pressure
29.37 inHg
Visibility
10 mi
UV Index
3.5
Cloud Cover
68%
Sunrise
5:47 AM
Sunset
8:13 PM
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WeatherAI™ Analysis

WeatherAI Analysis: Greenwich is currently mostly cloudy at 24°C. Precipitation is likely — peak probability 80% around 7 PM. Atmospheric instability is elevated (CAPE up to 1006 J/kg) — isolated convective development possible. Sunrise: 5:47AM · Sunset: 8:13PM.

Alerts

Heat Advisory
Williams, ND, Mountrail, ND, McKenzie, ND, Dunn, ND, Mercer, ND, Oliver, ND, Golden Valley, ND, Billings, ND, Stark, ND, Burleigh, ND, Hettinger, ND, Grant, ND, Emmons, ND, Western McLean, ND, Eastern McLean, ND, Western Morton, ND, Eastern Morton, ND, Western Sioux, ND, Eastern Sioux, ND, McHenry, ND, Pierce, ND, Sheridan, ND, Wells, ND, Foster, ND, Kidder, ND, Stutsman, ND, Adams, ND, Logan, ND, La Moure, ND, McIntosh, ND, Dickey, ND, Central and Southern Ward/Minot Area, ND
Expires 8:00 PM
41 AQI · Good Dominant: O3 Air Quality
Hourly Forecast · Next 24 Hours
Now
24°
73%
7 PM
23°
80%
8 PM
23°
64%
9 PM
21°
63%
10 PM
21°
52%
11 PM
21°
54%
12 AM
21°
55%
1 AM
20°
49%
2 AM
20°
45%
3 AM
20°
40%
4 AM
19°
39%
5 AM
18°
40%
6 AM
18°
32%
7 AM
18°
45%
8 AM
19°
47%
9 AM
20°
52%
10 AM
21°
60%
11 AM
21°
60%
12 PM
21°
60%
1 PM
23°
54%
2 PM
23°
51%
3 PM
24°
51%
4 PM
24°
43%
5 PM
24°
41%
7-Day Forecast
Tonight
27° 18°
Mostly Cloudy with a 73% chance of rain.
Thu
27° 18°
Mostly Cloudy with a 60% chance of rain.
Fri
31° 18°
Mostly Clear with a 43% chance of rain.
Sat
33° 21°
Mostly Cloudy with a 53% chance of rain.
Sun
31° 22°
Drizzle, 71% chance.
Mon
32° 21°
Drizzle, 64% chance.
Tue
33° 19°
Clear with a 28% chance of rain.
TimeTempConditionsPrecipWindHumidity
Now 24° Mostly Cloudy 73% 5 mph NW 79%
7 PM 23° Mostly Cloudy 80% 6 mph WNW 84%
8 PM 23° Heavy Rain 64% 4 mph W 89%
9 PM 21° Partly Cloudy 63% 3 mph W 90%
10 PM 21° Partly Cloudy 52% 4 mph W 92%
11 PM 21° Partly Cloudy 54% 3 mph WNW 93%
12 AM 21° Mostly Cloudy 55% 3 mph NW 93%
1 AM 20° Mostly Cloudy 49% 3 mph WNW 93%
2 AM 20° Mostly Cloudy 45% 3 mph WNW 93%
3 AM 20° Mostly Cloudy 40% 3 mph WNW 93%
4 AM 19° Overcast 39% 3 mph NW 93%
5 AM 18° Mostly Cloudy 40% 4 mph NW 93%
6 AM 18° Fog 32% 4 mph NNW 92%
7 AM 18° Fog 45% 5 mph N 92%
8 AM 19° Haze 47% 5 mph N 91%
9 AM 20° Mostly Cloudy 52% 6 mph N 87%
10 AM 21° Mostly Cloudy 60% 6 mph N 81%
11 AM 21° Mostly Cloudy 60% 7 mph N 79%
12 PM 21° Mostly Cloudy 60% 8 mph N 83%
1 PM 23° Mostly Cloudy 54% 8 mph N 85%
2 PM 23° Mostly Cloudy 51% 8 mph N 86%
3 PM 24° Mostly Cloudy 51% 7 mph N 83%
4 PM 24° Partly Cloudy 43% 7 mph N 80%
5 PM 24° Partly Cloudy 41% 6 mph N 78%
15-Day Forecast
Today
7/29
Mostly Cloudy
73%
18°
27°
Thu
7/30
Mostly Cloudy
60%
18°
27°
Fri
7/31
Mostly Clear
43%
18°
31°
Sat
8/1
Mostly Cloudy
53%
21°
33°
Sun
8/2
Drizzle
71%
22°
31°
Mon
8/3
Drizzle
64%
21°
32°
Tue
8/4
Clear
28%
19°
33°
Wed
8/5
Partly Cloudy
17%
20°
34°
Thu
8/6
Drizzle
50%
22°
34°
Fri
8/7
Rain
82%
22°
36°
Sat
8/8
Drizzle
54%
22°
33°
Sun
8/9
Drizzle
60%
22°
34°
Mon
8/10
Drizzle
60%
21°
32°
Tue
8/11
Drizzle
60%
20°
31°
Wed
8/12
Drizzle
60%
20°
31°
41
Good
U.S. Air Quality Index · Dominant: O3
50 100 150 200

Air quality is satisfactory and poses little or no health risk.

Pollutant Breakdown · Today
PM2.5
Fine particulate matter
21 AQI 3.8 µg/m³
O3
Ground-level ozone
Dominant
41 AQI 44 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Thu 41 Good 41 21
Fri 28 Good 28 9
Sat 45 Good 45 23
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 Wed Jul 29, 21:00'Z' · F0 · 130 (13 km CONUS/NA)
Hodograph · kt
10 20 30 40 SM
0–1 1–3 3–6 6–9 km
Instability
SBCAPE1308 J/kg
MLCAPE854 J/kg
MUCAPE1308 J/kg
SBCIN-37 J/kg
MLCIN0 J/kg
Lifted Index-4.8
Kinematics
0–6 km Shear19 kt
0–1 km Shear8 kt
Eff. Shear18 kt
0–1 km SRH-22
0–3 km SRH-39
Eff. SRH-39
Storm Motion171° @ 11 kt
0–1 km EHI-0.2
Composite Parameters
Sig. Tornado0.0
STP (eff)0.0
Supercell0.0
K-Index34.9
Thermo & Levels
PWAT1.51 in
0–3 km LR6.6 °C/km
700–500 LR6.0 °C/km
Total Totals48.8
LCL932 hPa
LFC886 hPa
EL252 hPa
Freezing Lvl12,323 ft