Heat Advisory — Hartford, CT, Tolland, CT, Windham, CT, Eastern Franklin, MA, Northern Worcester, MA, Central Middlesex County, MA, Western Essex, MA, Eastern Essex, MA, Eastern Hampshire, MA, Eastern Hampden, MA, Southern Worcester, MA, Western Norfolk, MA, Southeast Middlesex, MA, Suffolk, MA, Eastern Norfolk, MA, Northern Bristol, MA, Western Plymouth, MA, Eastern Plymouth, MA, Southern Bristol, MA, Southern Plymouth, MA, Northwest Middlesex County, MA, Northwest Providence, RI, Southeast Providence, RI, Western Kent, RI, Eastern Kent, RI, Bristol, RI, Washington, RI, Newport, RI 7:00 PM

Hartford, Connecticut

Last updated: 2:56 AM CDT  ·  Refresh
24°C
Feels like 28°
Mostly Clear
▲ 33°  /  ▼ 22°
Wind
2 mph WSW
Humidity
96%
Dew Point
23°
Pressure
29.94 inHg
Visibility
10 mi
UV Index
0.0
Cloud Cover
17%
Sunrise
5:50 AM
Sunset
8:01 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Hartford is currently mostly clear at 24°C. Precipitation is likely — peak probability 69% around 9 PM. Atmospheric instability is elevated (CAPE up to 1921 J/kg) — isolated convective development possible. Sunrise: 5:50AM · Sunset: 8:01PM.

Alerts

Heat Advisory
Hartford, CT, Tolland, CT, Windham, CT, Eastern Franklin, MA, Northern Worcester, MA, Central Middlesex County, MA, Western Essex, MA, Eastern Essex, MA, Eastern Hampshire, MA, Eastern Hampden, MA, Southern Worcester, MA, Western Norfolk, MA, Southeast Middlesex, MA, Suffolk, MA, Eastern Norfolk, MA, Northern Bristol, MA, Western Plymouth, MA, Eastern Plymouth, MA, Southern Bristol, MA, Southern Plymouth, MA, Northwest Middlesex County, MA, Northwest Providence, RI, Southeast Providence, RI, Western Kent, RI, Eastern Kent, RI, Bristol, RI, Washington, RI, Newport, RI
Expires 7:00 PM
48 AQI · Good Dominant: O3 Air Quality
Hourly Forecast · Next 24 Hours
Now
24°
18%
4 AM
22°
6%
5 AM
22°
6%
6 AM
22°
4%
7 AM
23°
7%
8 AM
26°
8%
9 AM
27°
11%
10 AM
28°
8%
11 AM
29°
8%
12 PM
32°
8%
1 PM
33°
9%
2 PM
32°
24%
3 PM
32°
25%
4 PM
33°
30%
5 PM
32°
49%
6 PM
31°
58%
7 PM
29°
66%
8 PM
28°
59%
9 PM
27°
69%
10 PM
26°
65%
11 PM
26°
57%
12 AM
25°
58%
1 AM
24°
55%
2 AM
24°
46%
7-Day Forecast
Today
33° 22°
Partly Cloudy with a 69% chance of rain.
Sat
33° 22°
Partly Cloudy with a 64% chance of rain.
Sun
36° 20°
Mostly Clear.
Mon
32° 18°
Clear with a 37% chance of rain.
Tue
33° 20°
Drizzle, 56% chance.
Wed
32° 18°
Drizzle, 56% chance.
Thu
31° 17°
Drizzle, 54% chance.
TimeTempConditionsPrecipWindHumidity
Now 24° Mostly Clear 18% 2 mph WSW 96%
4 AM 22° Clear 6% 2 mph SW 95%
5 AM 22° Mostly Clear 6% 2 mph W 94%
6 AM 22° Mostly Clear 4% 2 mph W 92%
7 AM 23° Mostly Clear 7% 2 mph NW 89%
8 AM 26° Mostly Clear 8% 2 mph NW 83%
9 AM 27° Mostly Clear 11% 3 mph NW 76%
10 AM 28° Mostly Clear 8% 2 mph NW 69%
11 AM 29° Mostly Clear 8% 2 mph W 64%
12 PM 32° Mostly Clear 8% 3 mph WSW 59%
1 PM 33° Mostly Clear 9% 4 mph WSW 54%
2 PM 32° Mostly Clear 24% 4 mph WSW 54%
3 PM 32° Mostly Clear 25% 4 mph WSW 55%
4 PM 33° Partly Cloudy 30% 4 mph WSW 56%
5 PM 32° Partly Cloudy 49% 4 mph WSW 62%
6 PM 31° Mostly Cloudy 58% 5 mph SW 71%
7 PM 29° Mostly Cloudy 66% 6 mph SW 78%
8 PM 28° Overcast 59% 5 mph SW 83%
9 PM 27° Overcast 69% 6 mph SW 86%
10 PM 26° Rain 65% 5 mph SW 90%
11 PM 26° Rain 57% 4 mph SW 92%
12 AM 25° Rain 58% 3 mph SW 93%
1 AM 24° Rain 55% 3 mph WSW 95%
2 AM 24° Rain 46% 3 mph WSW 95%
15-Day Forecast
Today
8/7
Partly Cloudy
69%
22°
33°
Sat
8/8
Partly Cloudy
64%
22°
33°
Sun
8/9
Mostly Clear
10%
20°
36°
Mon
8/10
Clear
37%
18°
32°
Tue
8/11
Drizzle
56%
20°
33°
Wed
8/12
Drizzle
56%
18°
32°
Thu
8/13
Drizzle
54%
17°
31°
Fri
8/14
Drizzle
54%
15°
29°
Sat
8/15
Drizzle
35%
14°
29°
Sun
8/16
Rain
64%
16°
28°
Mon
8/17
Drizzle
60%
14°
27°
Tue
8/18
Clear
60%
14°
28°
Wed
8/19
Drizzle
60%
14°
28°
Thu
8/20
Drizzle
60%
16°
29°
Fri
8/21
Drizzle
60%
16°
29°
48
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
23 AQI 4.1 µg/m³
O3
Ground-level ozone
Dominant
48 AQI 53 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Today 48 Good 48 23
Sat 46 Good 46 30
Sun 61 Moderate 61 52
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 Fri Aug 7, 06:00'Z' · F0 · 130 (13 km CONUS/NA)
Hodograph · kt
10 20 30 40 SM
0–1 1–3 3–6 6–9 km
Instability
SBCAPE937 J/kg
MLCAPE638 J/kg
MUCAPE937 J/kg
SBCIN-136 J/kg
MLCIN0 J/kg
Lifted Index-2.6
Kinematics
0–6 km Shear31 kt
0–1 km Shear12 kt
Eff. Shear33 kt
0–1 km SRH-67
0–3 km SRH-86
Eff. SRH-86
Storm Motion198° @ 22 kt
0–1 km EHI-0.4
Composite Parameters
Sig. Tornado0.0
STP (eff)0.0
Supercell0.0
K-Index33.7
Thermo & Levels
PWAT1.97 in
0–3 km LR4.4 °C/km
700–500 LR6.0 °C/km
Total Totals45.6
LCL1000 hPa
LFC711 hPa
EL199 hPa
Freezing Lvl15,787 ft