Coastal Flood Watch 4:00 PM

Newton, Massachusetts

Last updated: 8:33 PM CDT  ·  Refresh
12°C
Feels like 9°
Mostly Clear
▲ 17°  /  ▼ 8°
Wind
7 mph NNE
Humidity
72%
Dew Point
8°
Pressure
30.33 inHg
Visibility
10 mi
UV Index
0.0
Cloud Cover
24%
Sunrise
6:33 AM
Sunset
6:40 PM
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WeatherAI™ Analysis

WeatherAI Analysis: Newton is currently mostly clear at 12°C. Dry conditions are expected through the next 24 hours. Sunrise: 6:33AM · Sunset: 6:40PM.

Alerts

Coastal Flood Watch
Expires 4:00 PM
17 AQI · Good Dominant: O3 Air Quality
Hourly Forecast · Next 24 Hours
Now
12°
11%
10 PM
11°
19%
11 PM
11°
20%
12 AM
11°
20%
1 AM
11°
20%
2 AM
10°
3%
3 AM
9°
3%
4 AM
9°
3%
5 AM
8°
3%
6 AM
8°
3%
7 AM
9°
3%
8 AM
11°
3%
9 AM
13°
3%
10 AM
14°
3%
11 AM
15°
3%
12 PM
16°
3%
1 PM
17°
3%
2 PM
17°
3%
3 PM
17°
3%
4 PM
18°
3%
5 PM
16°
3%
6 PM
16°
3%
7 PM
16°
3%
8 PM
15°
3%
7-Day Forecast
Tonight
17° 8°
Mostly Clear.
Thu
18° 8°
Partly Cloudy with a 20% chance of rain.
Fri
19° 11°
Overcast with a 50% chance of rain.
Sat
17° 11°
Heavy Rain, 90% chance.
Sun
17° 11°
Heavy Rain, 90% chance.
Mon
16° 11°
Rain, 74% chance.
Tue
19° 12°
Overcast with a 35% chance of rain.
TimeTempConditionsPrecipWindHumidity
Now 12° Mostly Clear 11% 7 mph NNE 72%
10 PM 11° Mostly Clear 19% 7 mph NNE 71%
11 PM 11° Mostly Clear 20% 7 mph NNE 72%
12 AM 11° Mostly Clear 20% 7 mph NNE 78%
1 AM 11° Mostly Clear 20% 8 mph NNE 80%
2 AM 10° Partly Cloudy 3% 8 mph NNE 83%
3 AM 9° Partly Cloudy 3% 8 mph NNE 87%
4 AM 9° Partly Cloudy 3% 8 mph NNE 90%
5 AM 8° Partly Cloudy 3% 9 mph NNE 90%
6 AM 8° Partly Cloudy 3% 9 mph NNE 88%
7 AM 9° Partly Cloudy 3% 10 mph NNE 85%
8 AM 11° Partly Cloudy 3% 10 mph NNE 74%
9 AM 13° Partly Cloudy 3% 12 mph NE 67%
10 AM 14° Partly Cloudy 3% 14 mph NE 61%
11 AM 15° Partly Cloudy 3% 14 mph NE 58%
12 PM 16° Partly Cloudy 3% 14 mph NE 57%
1 PM 17° Partly Cloudy 3% 15 mph NE 56%
2 PM 17° Partly Cloudy 3% 14 mph NE 57%
3 PM 17° Partly Cloudy 3% 14 mph NE 55%
4 PM 18° Partly Cloudy 3% 13 mph NE 54%
5 PM 16° Partly Cloudy 3% 12 mph NE 55%
6 PM 16° Partly Cloudy 3% 12 mph NE 57%
7 PM 16° Mostly Cloudy 3% 11 mph NE 60%
8 PM 15° Mostly Cloudy 3% 12 mph NE 63%
15-Day Forecast
Today
9/23
Mostly Clear
11%
8°
17°
Thu
9/24
Partly Cloudy
20%
8°
18°
Fri
9/25
Overcast
50%
11°
19°
Sat
9/26
Heavy Rain
90%
11°
17°
Sun
9/27
Heavy Rain
90%
11°
17°
Mon
9/28
Rain
74%
11°
16°
Tue
9/29
Overcast
35%
12°
19°
Wed
9/30
Partly Cloudy
16%
13°
23°
Thu
10/1
Rain
53%
14°
23°
Fri
10/2
Drizzle
47%
14°
23°
Sat
10/3
Partly Cloudy
60%
12°
24°
Sun
10/4
Drizzle
60%
12°
23°
Mon
10/5
Drizzle
60%
11°
21°
Tue
10/6
Drizzle
90%
9°
19°
Wed
10/7
Drizzle
90%
9°
19°
17
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
14 AQI 2.6 µg/m³
O3
Ground-level ozone
Dominant
17 AQI 19 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Today 17 Good 17 14
Fri 20 Good 20 17
Sat 21 Good 20 21
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 LCL0°C Temperature (°C) Pressure (hPa)
Temp Dewpoint Parcel (SB) CAPE CIN Dry adiabat Moist adiabat Mixing ratio
RAP
Valid Wed Sep 23, 23:00'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
SBCAPE0 J/kg
MLCAPE7 J/kg
MUCAPE0 J/kg
SBCIN—
MLCIN0 J/kg
Lifted Index15.7
Kinematics
0–6 km Shear10 kt
0–1 km Shear23 kt
Eff. Shear—
0–1 km SRH88
0–3 km SRH64
Eff. SRH—
Storm Motion91° @ 27 kt
0–1 km EHI0.0
Composite Parameters
Sig. Tornado0.0
STP (eff)—
Supercell—
K-Index-31.8
Thermo & Levels
PWAT0.34 in
0–3 km LR3.0 °C/km
700–500 LR5.6 °C/km
Total Totals13.0
LCL971 hPa
LFC—
EL—
Freezing Lvl10,965 ft