Tornado Watch 8:00 PM Flood Watch 1:00 AM

New Haven County, South Central Connecticut Planning Region, Connecticut, United States

Last updated: 6:25 PM CDT  ·  Refresh
22°C
Feels like 24°
Haze
▲ 23°  /  ▼ 19°
Wind
7 mph S
Humidity
97%
Dew Point
22°
Pressure
29.46 inHg
Visibility
1 mi
UV Index
0.7
Cloud Cover
97%
Sunrise
5:36 AM
Sunset
8:19 PM
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WeatherAI™ Analysis

WeatherAI Analysis: New Haven County is currently haze at 22°C. Precipitation is likely — peak probability 83% around 7 PM. Atmospheric instability is elevated (CAPE up to 1633 J/kg) — isolated convective development possible. Sunrise: 5:36AM · Sunset: 8:19PM.

Alerts

Tornado Watch
Expires 8:00 PM
Flood Watch
Expires 1:00 AM
70 AQI · Moderate Dominant: PM2.5 Air Quality
Hourly Forecast · Next 24 Hours
Now
22°
83%
8 PM
22°
72%
9 PM
22°
72%
10 PM
22°
49%
11 PM
22°
46%
12 AM
22°
48%
1 AM
22°
56%
2 AM
22°
59%
3 AM
22°
59%
4 AM
22°
64%
5 AM
21°
50%
6 AM
21°
39%
7 AM
22°
43%
8 AM
22°
43%
9 AM
23°
41%
10 AM
24°
42%
11 AM
24°
42%
12 PM
24°
43%
1 PM
24°
43%
2 PM
26°
35%
3 PM
26°
27%
4 PM
26°
27%
5 PM
26°
28%
6 PM
26°
31%
7-Day Forecast
Tonight
23° 19°
Haze with a 83% chance of rain.
Wed
28° 19°
Partly Cloudy with a 64% chance of rain.
Thu
25° 16°
Mostly Clear.
Fri
26° 16°
Fog.
Sat
27° 16°
Haze.
Sun
27° 17°
Rain, 71% chance.
Mon
27° 18°
Drizzle, 60% chance.
TimeTempConditionsPrecipWindHumidity
Now 22° Haze 83% 7 mph S 97%
8 PM 22° Overcast 72% 7 mph SSW 96%
9 PM 22° Overcast 72% 7 mph SSW 96%
10 PM 22° Overcast 49% 7 mph SSW 96%
11 PM 22° Overcast 46% 8 mph SSW 95%
12 AM 22° Overcast 48% 9 mph SSW 95%
1 AM 22° Overcast 56% 9 mph SSW 94%
2 AM 22° Overcast 59% 9 mph SSW 94%
3 AM 22° Overcast 59% 9 mph SSW 94%
4 AM 22° Mostly Cloudy 64% 8 mph SSW 95%
5 AM 21° Mostly Cloudy 50% 8 mph SW 94%
6 AM 21° Partly Cloudy 39% 8 mph SW 92%
7 AM 22° Partly Cloudy 43% 8 mph SW 89%
8 AM 22° Partly Cloudy 43% 9 mph SW 87%
9 AM 23° Drizzle 41% 8 mph SW 85%
10 AM 24° Rain 42% 8 mph SW 82%
11 AM 24° Rain 42% 8 mph SW 80%
12 PM 24° Partly Cloudy 43% 8 mph SW 78%
1 PM 24° Partly Cloudy 43% 8 mph WSW 76%
2 PM 26° Partly Cloudy 35% 8 mph WSW 72%
3 PM 26° Partly Cloudy 27% 9 mph WSW 67%
4 PM 26° Partly Cloudy 27% 9 mph WSW 62%
5 PM 26° Partly Cloudy 28% 9 mph WSW 61%
6 PM 26° Partly Cloudy 31% 8 mph W 65%
15-Day Forecast
Today
7/21
Haze
83%
19°
23°
Wed
7/22
Partly Cloudy
64%
19°
28°
Thu
7/23
Mostly Clear
5%
16°
25°
Fri
7/24
Fog
16%
16°
26°
Sat
7/25
Haze
18%
16°
27°
Sun
7/26
Rain
71%
17°
27°
Mon
7/27
Drizzle
60%
18°
27°
Tue
7/28
Drizzle
63%
18°
27°
Wed
7/29
Drizzle
68%
17°
26°
Thu
7/30
Drizzle
68%
17°
26°
Fri
7/31
Drizzle
64%
18°
27°
Sat
8/1
Drizzle
60%
18°
26°
Sun
8/2
Drizzle
60%
17°
27°
Mon
8/3
Drizzle
60%
19°
27°
Tue
8/4
Drizzle
60%
19°
28°
70
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
70 AQI 19.2 µg/m³
O3
Ground-level ozone
37 AQI 41 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Wed 70 Moderate 37 70
Thu 38 Good 38 31
Fri 48 Good 31 48
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, 22:00'Z' · F0 · 130 (13 km CONUS/NA)
Hodograph · kt
10 20 30 40 50 60 70 SM
0–1 1–3 3–6 6–9 km
Instability
SBCAPE406 J/kg
MLCAPE537 J/kg
MUCAPE615 J/kg
SBCIN-49 J/kg
MLCIN0 J/kg
Lifted Index-2.2
Kinematics
0–6 km Shear35 kt
0–1 km Shear19 kt
Eff. Shear35 kt
0–1 km SRH-69
0–3 km SRH-112
Eff. SRH-112
Storm Motion206° @ 38 kt
0–1 km EHI-0.2
Composite Parameters
Sig. Tornado0.0
STP (eff)0.0
Supercell0.0
K-Index36.3
Thermo & Levels
PWAT2.11 in
0–3 km LR5.1 °C/km
700–500 LR5.2 °C/km
Total Totals46.5
LCL990 hPa
LFC783 hPa
EL358 hPa
Freezing Lvl13,921 ft