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

Newton, Massachusetts

Last updated: 2:06 AM CDT  ·  Refresh
24°C
Feels like 28°
Mostly Clear
▲ 34°  /  ▼ 22°
Wind
5 mph SW
Humidity
94%
Dew Point
23°
Pressure
29.90 inHg
Visibility
9 mi
UV Index
0.0
Cloud Cover
11%
Sunrise
5:43 AM
Sunset
7:56 PM
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WeatherAI™ Analysis

WeatherAI Analysis: Newton is currently mostly clear at 24°C. Precipitation is likely — peak probability 66% around 3 AM. Atmospheric instability is elevated (CAPE up to 1412 J/kg) — isolated convective development possible. Sunrise: 5:43AM · Sunset: 7:56PM.

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
37 AQI · Good Dominant: O3 Air Quality
Hourly Forecast · Next 24 Hours
Now
24°
16%
4 AM
24°
3%
5 AM
22°
4%
6 AM
22°
5%
7 AM
23°
3%
8 AM
24°
3%
9 AM
27°
7%
10 AM
28°
10%
11 AM
30°
12%
12 PM
31°
21%
1 PM
33°
22%
2 PM
33°
22%
3 PM
33°
26%
4 PM
33°
26%
5 PM
34°
36%
6 PM
33°
36%
7 PM
32°
33%
8 PM
30°
33%
9 PM
29°
37%
10 PM
28°
51%
11 PM
28°
52%
12 AM
27°
53%
1 AM
27°
58%
2 AM
25°
65%
7-Day Forecast
Today
34° 22°
Clear with a 37% chance of rain.
Sat
34° 22°
Partly Cloudy with a 67% chance of rain.
Sun
37° 21°
Partly Cloudy.
Mon
34° 19°
Clear with a 33% chance of rain.
Tue
36° 22°
Drizzle, 51% chance.
Wed
33° 20°
Rain, 70% chance.
Thu
31° 17°
Drizzle, 63% chance.
TimeTempConditionsPrecipWindHumidity
Now 24° Mostly Clear 16% 5 mph SW 94%
4 AM 24° Clear 3% 4 mph WSW 94%
5 AM 22° Clear 4% 4 mph WSW 94%
6 AM 22° Clear 5% 4 mph W 92%
7 AM 23° Clear 3% 5 mph W 88%
8 AM 24° Clear 3% 5 mph W 83%
9 AM 27° Clear 7% 5 mph WNW 75%
10 AM 28° Clear 10% 5 mph WNW 67%
11 AM 30° Clear 12% 5 mph WNW 58%
12 PM 31° Clear 21% 6 mph W 53%
1 PM 33° Clear 22% 6 mph W 48%
2 PM 33° Clear 22% 6 mph W 45%
3 PM 33° Clear 26% 6 mph W 46%
4 PM 33° Mostly Clear 26% 6 mph W 48%
5 PM 34° Mostly Clear 36% 6 mph W 50%
6 PM 33° Mostly Clear 36% 5 mph W 55%
7 PM 32° Mostly Clear 33% 5 mph WSW 61%
8 PM 30° Partly Cloudy 33% 5 mph SW 67%
9 PM 29° Partly Cloudy 37% 5 mph SW 72%
10 PM 28° Partly Cloudy 51% 5 mph SW 76%
11 PM 28° Mostly Cloudy 52% 5 mph SW 78%
12 AM 27° Mostly Cloudy 53% 5 mph WSW 80%
1 AM 27° Mostly Cloudy 58% 6 mph WSW 82%
2 AM 25° Rain 65% 5 mph WSW 84%
15-Day Forecast
Today
8/7
Clear
37%
22°
34°
Sat
8/8
Partly Cloudy
67%
22°
34°
Sun
8/9
Partly Cloudy
17%
21°
37°
Mon
8/10
Clear
33%
19°
34°
Tue
8/11
Drizzle
51%
22°
36°
Wed
8/12
Rain
70%
20°
33°
Thu
8/13
Drizzle
63%
17°
31°
Fri
8/14
Rain
80%
16°
30°
Sat
8/15
Drizzle
44%
16°
31°
Sun
8/16
Drizzle
51%
17°
29°
Mon
8/17
Drizzle
60%
16°
28°
Tue
8/18
Drizzle
60%
17°
28°
Wed
8/19
Drizzle
60%
16°
29°
Thu
8/20
Drizzle
60%
16°
29°
Fri
8/21
Drizzle
60%
17°
29°
37
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
37 AQI 40 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Today 37 Good 37 21
Sat 44 Good 44 34
Sun 48 Good 48 43
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
SBCAPE1023 J/kg
MLCAPE1110 J/kg
MUCAPE1359 J/kg
SBCIN-135 J/kg
MLCIN0 J/kg
Lifted Index-2.4
Kinematics
0–6 km Shear24 kt
0–1 km Shear10 kt
Eff. Shear28 kt
0–1 km SRH-46
0–3 km SRH-60
Eff. SRH-60
Storm Motion208° @ 24 kt
0–1 km EHI-0.3
Composite Parameters
Sig. Tornado0.0
STP (eff)0.0
Supercell0.0
K-Index31.4
Thermo & Levels
PWAT1.98 in
0–3 km LR4.6 °C/km
700–500 LR5.8 °C/km
Total Totals44.0
LCL993 hPa
LFC767 hPa
EL200 hPa
Freezing Lvl16,152 ft