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: 2:05 AM CDT  ·  Refresh
24°C
Feels like 29°
Mostly Clear
▲ 33°  /  ▼ 22°
Wind
2 mph SW
Humidity
96%
Dew Point
23°
Pressure
29.94 inHg
Visibility
9 mi
UV Index
0.0
Cloud Cover
19%
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 65% around 7 PM. Atmospheric instability is elevated (CAPE up to 1847 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°
16%
3 AM
23°
13%
4 AM
22°
6%
5 AM
22°
6%
6 AM
22°
4%
7 AM
23°
7%
8 AM
26°
7%
9 AM
27°
7%
10 AM
28°
8%
11 AM
29°
8%
12 PM
32°
8%
1 PM
33°
8%
2 PM
33°
22%
3 PM
33°
22%
4 PM
33°
26%
5 PM
32°
43%
6 PM
31°
56%
7 PM
30°
64%
8 PM
28°
57%
9 PM
27°
58%
10 PM
27°
54%
11 PM
26°
49%
12 AM
26°
49%
1 AM
25°
50%
7-Day Forecast
Today
33° 22°
Mostly Clear with a 57% chance of rain.
Sat
34° 22°
Partly Cloudy with a 60% chance of rain.
Sun
36° 20°
Mostly Cloudy.
Mon
32° 18°
Clear with a 53% chance of rain.
Tue
34° 20°
Drizzle, 51% chance.
Wed
32° 18°
Drizzle, 52% chance.
Thu
31° 17°
Drizzle, 53% chance.
TimeTempConditionsPrecipWindHumidity
Now 24° Mostly Clear 16% 2 mph SW 96%
3 AM 23° Clear 13% 2 mph W 95%
4 AM 22° Mostly Clear 6% 1 mph WSW 95%
5 AM 22° Mostly Clear 6% 2 mph WSW 94%
6 AM 22° Mostly Clear 4% 1 mph W 93%
7 AM 23° Mostly Clear 7% 2 mph NW 90%
8 AM 26° Mostly Clear 7% 3 mph NNW 83%
9 AM 27° Mostly Clear 7% 3 mph NNW 76%
10 AM 28° Mostly Clear 8% 2 mph NNW 69%
11 AM 29° Mostly Clear 8% 2 mph WNW 64%
12 PM 32° Mostly Clear 8% 3 mph W 58%
1 PM 33° Mostly Clear 8% 4 mph WSW 53%
2 PM 33° Mostly Clear 22% 5 mph WSW 54%
3 PM 33° Mostly Clear 22% 5 mph WSW 54%
4 PM 33° Partly Cloudy 26% 4 mph WSW 56%
5 PM 32° Partly Cloudy 43% 4 mph WSW 62%
6 PM 31° Partly Cloudy 56% 5 mph WSW 71%
7 PM 30° Partly Cloudy 64% 6 mph WSW 78%
8 PM 28° Mostly Cloudy 57% 5 mph SW 82%
9 PM 27° Mostly Cloudy 58% 5 mph SW 86%
10 PM 27° Rain 54% 6 mph SW 90%
11 PM 26° Rain 49% 4 mph SW 91%
12 AM 26° Rain 49% 3 mph WSW 93%
1 AM 25° Rain 50% 3 mph W 95%
15-Day Forecast
Today
8/7
Mostly Clear
57%
22°
33°
Sat
8/8
Partly Cloudy
60%
22°
34°
Sun
8/9
Mostly Cloudy
11%
20°
36°
Mon
8/10
Clear
53%
18°
32°
Tue
8/11
Drizzle
51%
20°
34°
Wed
8/12
Drizzle
52%
18°
32°
Thu
8/13
Drizzle
53%
17°
31°
Fri
8/14
Drizzle
43%
16°
29°
Sat
8/15
Drizzle
44%
15°
29°
Sun
8/16
Rain
68%
16°
28°
Mon
8/17
Drizzle
60%
16°
27°
Tue
8/18
Drizzle
60%
16°
28°
Wed
8/19
Drizzle
60%
15°
28°
Thu
8/20
Clear
60%
15°
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, 05:00'Z' · F0 · 130 (13 km CONUS/NA)
Hodograph · kt
10 20 30 40 SM
0–1 1–3 3–6 6–9 km
Instability
SBCAPE1134 J/kg
MLCAPE650 J/kg
MUCAPE1134 J/kg
SBCIN-120 J/kg
MLCIN0 J/kg
Lifted Index-3.0
Kinematics
0–6 km Shear28 kt
0–1 km Shear13 kt
Eff. Shear31 kt
0–1 km SRH-70
0–3 km SRH-81
Eff. SRH-81
Storm Motion199° @ 22 kt
0–1 km EHI-0.5
Composite Parameters
Sig. Tornado0.0
STP (eff)0.0
Supercell0.0
K-Index32.0
Thermo & Levels
PWAT1.99 in
0–3 km LR4.5 °C/km
700–500 LR6.0 °C/km
Total Totals44.3
LCL1000 hPa
LFC755 hPa
EL195 hPa
Freezing Lvl15,630 ft