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

Suffolk County, Massachusetts, United States

Last updated: 2:03 AM CDT  ·  Refresh
24°C
Feels like 27°
Mostly Clear
▲ 32°  /  ▼ 22°
Wind
5 mph SW
Humidity
94%
Dew Point
22°
Pressure
30.04 inHg
Visibility
9 mi
UV Index
0.0
Cloud Cover
13%
Sunrise
5:42 AM
Sunset
7:55 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Suffolk County is currently mostly clear at 24°C. Precipitation is likely — peak probability 61% around 3 AM. Atmospheric instability is elevated (CAPE up to 1305 J/kg) — isolated convective development possible. Sunrise: 5:42AM · Sunset: 7:55PM.

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
40 AQI · Good Dominant: O3 Air Quality
Hourly Forecast · Next 24 Hours
Now
24°
16%
4 AM
23°
3%
5 AM
22°
4%
6 AM
23°
5%
7 AM
23°
3%
8 AM
24°
3%
9 AM
26°
9%
10 AM
27°
21%
11 AM
28°
28%
12 PM
29°
30%
1 PM
30°
30%
2 PM
31°
34%
3 PM
30°
35%
4 PM
29°
35%
5 PM
29°
36%
6 PM
28°
36%
7 PM
27°
28%
8 PM
26°
27%
9 PM
25°
37%
10 PM
24°
48%
11 PM
24°
57%
12 AM
24°
57%
1 AM
24°
53%
2 AM
24°
60%
7-Day Forecast
Today
32° 22°
Mostly Clear with a 37% chance of rain.
Sat
32° 22°
Partly Cloudy with a 78% chance of rain.
Sun
34° 21°
Mostly Clear.
Mon
32° 21°
Mostly Clear with a 37% chance of rain.
Tue
34° 22°
Drizzle, 51% chance.
Wed
32° 20°
Rain, 70% chance.
Thu
29° 18°
Drizzle, 63% chance.
TimeTempConditionsPrecipWindHumidity
Now 24° Mostly Clear 16% 5 mph SW 94%
4 AM 23° Clear 3% 6 mph WSW 93%
5 AM 22° Mostly Clear 4% 6 mph WSW 94%
6 AM 23° Mostly Clear 5% 5 mph WSW 92%
7 AM 23° Mostly Clear 3% 6 mph W 90%
8 AM 24° Mostly Clear 3% 6 mph W 87%
9 AM 26° Mostly Clear 9% 6 mph W 81%
10 AM 27° Clear 21% 6 mph WNW 74%
11 AM 28° Clear 28% 5 mph WNW 68%
12 PM 29° Clear 30% 3 mph W 64%
1 PM 30° Clear 30% 3 mph SW 60%
2 PM 31° Clear 34% 3 mph SSW 57%
3 PM 30° Clear 35% 4 mph ESE 58%
4 PM 29° Mostly Clear 35% 6 mph E 61%
5 PM 29° Mostly Clear 36% 6 mph E 64%
6 PM 28° Mostly Clear 36% 5 mph ESE 69%
7 PM 27° Partly Cloudy 28% 6 mph SE 74%
8 PM 26° Partly Cloudy 27% 7 mph S 80%
9 PM 25° Partly Cloudy 37% 6 mph S 81%
10 PM 24° Partly Cloudy 48% 6 mph S 82%
11 PM 24° Mostly Cloudy 57% 5 mph SSW 82%
12 AM 24° Mostly Cloudy 57% 5 mph SSW 84%
1 AM 24° Mostly Cloudy 53% 5 mph SW 86%
2 AM 24° Haze 60% 5 mph SW 87%
15-Day Forecast
Today
8/7
Mostly Clear
37%
22°
32°
Sat
8/8
Partly Cloudy
78%
22°
32°
Sun
8/9
Mostly Clear
17%
21°
34°
Mon
8/10
Mostly Clear
37%
21°
32°
Tue
8/11
Drizzle
51%
22°
34°
Wed
8/12
Rain
70%
20°
32°
Thu
8/13
Drizzle
63%
18°
29°
Fri
8/14
Rain
80%
17°
28°
Sat
8/15
Drizzle
44%
17°
28°
Sun
8/16
Drizzle
51%
18°
28°
Mon
8/17
Drizzle
60%
17°
27°
Tue
8/18
Drizzle
60%
17°
27°
Wed
8/19
Drizzle
60%
17°
27°
Thu
8/20
Drizzle
60%
17°
28°
Fri
8/21
Drizzle
60%
18°
29°
40
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
28 AQI 5.0 µg/m³
O3
Ground-level ozone
Dominant
40 AQI 43 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Today 40 Good 40 28
Sat 51 Moderate 51 43
Sun 54 Moderate 54 49
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
SBCAPE452 J/kg
MLCAPE957 J/kg
MUCAPE1354 J/kg
SBCIN-252 J/kg
MLCIN0 J/kg
Lifted Index-0.9
Kinematics
0–6 km Shear25 kt
0–1 km Shear10 kt
Eff. Shear22 kt
0–1 km SRH-43
0–3 km SRH-54
Eff. SRH-26
Storm Motion208° @ 24 kt
0–1 km EHI-0.1
Composite Parameters
Sig. Tornado0.0
STP (eff)0.0
Supercell0.0
K-Index32.0
Thermo & Levels
PWAT2.02 in
0–3 km LR4.4 °C/km
700–500 LR5.7 °C/km
Total Totals43.4
LCL995 hPa
LFC591 hPa
EL231 hPa
Freezing Lvl16,371 ft