Wind Advisory — Central Middlesex County, MA, Western Essex, MA, Southern Worcester, MA, Western Norfolk, MA, Southeast Middlesex, MA, Northern Bristol, MA, Western Plymouth, MA, Northwest Providence, RI 11:00 AM Flood Watch 1:00 AM

Cambridge, Massachusetts

Last updated: 4:44 PM CDT  ·  Refresh
14°C
Feels like 8°
Heavy Rain
▲ 16°  /  ▼ 13°
Wind
19 mph NNE
Humidity
83%
Dew Point
11°
Pressure
29.81 inHg
Visibility
3 mi
UV Index
0.9
Cloud Cover
98%
Sunrise
6:36 AM
Sunset
6:34 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Cambridge is currently heavy rain at 14°C. Precipitation is likely — peak probability 90% around 5 PM. Sunrise: 6:36AM · Sunset: 6:34PM.

Alerts

Wind Advisory
Central Middlesex County, MA, Western Essex, MA, Southern Worcester, MA, Western Norfolk, MA, Southeast Middlesex, MA, Northern Bristol, MA, Western Plymouth, MA, Northwest Providence, RI
Expires 11:00 AM
Flood Watch
Expires 1:00 AM
30 AQI · Good Dominant: O3 Air Quality
Hourly Forecast · Next 24 Hours
Now
14°
90%
6 PM
15°
90%
7 PM
14°
90%
8 PM
14°
85%
9 PM
14°
84%
10 PM
14°
82%
11 PM
14°
81%
12 AM
14°
81%
1 AM
14°
81%
2 AM
14°
90%
3 AM
14°
90%
4 AM
15°
90%
5 AM
13°
90%
6 AM
14°
90%
7 AM
14°
90%
8 AM
14°
90%
9 AM
14°
90%
10 AM
14°
90%
11 AM
14°
90%
12 PM
17°
86%
1 PM
17°
86%
2 PM
18°
79%
3 PM
18°
79%
4 PM
18°
80%
7-Day Forecast
Today
16° 13°
Heavy Rain, 90% chance.
Sun
18° 13°
Overcast with a 90% chance of rain.
Mon
17° 12°
Overcast with a 90% chance of rain.
Tue
16° 11°
Overcast with a 64% chance of rain.
Wed
19° 11°
Clear.
Thu
24° 11°
Drizzle, 43% chance.
Fri
22° 10°
Clear.
TimeTempConditionsPrecipWindHumidity
Now 14° Heavy Rain 90% 19 mph NNE 83%
6 PM 15° Rain 90% 19 mph NNE 84%
7 PM 14° Heavy Rain 90% 19 mph NNE 90%
8 PM 14° Overcast 85% 20 mph NNE 94%
9 PM 14° Overcast 84% 20 mph NNE 95%
10 PM 14° Heavy Rain 82% 20 mph NNE 95%
11 PM 14° Heavy Rain 81% 20 mph NNE 95%
12 AM 14° Heavy Rain 81% 20 mph NNE 96%
1 AM 14° Heavy Rain 81% 20 mph NNE 96%
2 AM 14° Overcast 90% 20 mph NE 96%
3 AM 14° Heavy Rain 90% 20 mph NE 96%
4 AM 15° Heavy Rain 90% 21 mph NE 96%
5 AM 13° Heavy Rain 90% 22 mph NE 96%
6 AM 14° Heavy Rain 90% 22 mph NE 96%
7 AM 14° Overcast 90% 22 mph NE 96%
8 AM 14° Overcast 90% 22 mph NE 96%
9 AM 14° Overcast 90% 21 mph NE 96%
10 AM 14° Overcast 90% 21 mph NE 96%
11 AM 14° Heavy Rain 90% 20 mph NE 96%
12 PM 17° Heavy Rain 86% 18 mph NE 97%
1 PM 17° Heavy Rain 86% 17 mph ENE 98%
2 PM 18° Heavy Rain 79% 17 mph ENE 98%
3 PM 18° Heavy Rain 79% 16 mph ENE 97%
4 PM 18° Heavy Rain 80% 16 mph ENE 97%
15-Day Forecast
Today
9/26
Heavy Rain
90%
13°
16°
Sun
9/27
Overcast
90%
13°
18°
Mon
9/28
Overcast
90%
12°
17°
Tue
9/29
Overcast
64%
11°
16°
Wed
9/30
Clear
8%
11°
19°
Thu
10/1
Drizzle
43%
11°
24°
Fri
10/2
Clear
8%
10°
22°
Sat
10/3
Drizzle
44%
9°
18°
Sun
10/4
Rain
68%
11°
20°
Mon
10/5
Drizzle
51%
13°
26°
Tue
10/6
Drizzle
60%
9°
23°
Wed
10/7
Drizzle
60%
9°
16°
Thu
10/8
Clear
60%
8°
15°
Fri
10/9
Clear
25%
8°
16°
Sat
10/10
Drizzle
60%
9°
16°
30
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
15 AQI 2.8 µg/m³
O3
Ground-level ozone
Dominant
30 AQI 33 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Sun 30 Good 30 15
Mon 35 Good 35 34
Tue 31 Good 29 31
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 Sat Sep 26, 20:00'Z' · F0 · 130 (13 km CONUS/NA)
Hodograph · kt
10 20 30 40 50 60 SM
0–1 1–3 3–6 6–9 km
Instability
SBCAPE0 J/kg
MLCAPE13 J/kg
MUCAPE19 J/kg
SBCIN—
MLCIN0 J/kg
Lifted Index12.4
Kinematics
0–6 km Shear29 kt
0–1 km Shear40 kt
Eff. Shear—
0–1 km SRH166
0–3 km SRH257
Eff. SRH—
Storm Motion82° @ 17 kt
0–1 km EHI0.0
Composite Parameters
Sig. Tornado0.0
STP (eff)—
Supercell—
K-Index33.3
Thermo & Levels
PWAT1.66 in
0–3 km LR3.0 °C/km
700–500 LR5.6 °C/km
Total Totals45.0
LCL974 hPa
LFC—
EL—
Freezing Lvl12,986 ft