Worcester County, Massachusetts, United States

Last updated: 8:35 PM CDT  ·  Refresh
18°C
Feels like 18°
Haze
▲ 19°  /  ▼ 16°
Wind
8 mph ENE
Humidity
99%
Dew Point
18°
Pressure
28.89 inHg
Visibility
1 mi
UV Index
0.0
Cloud Cover
96%
Sunrise
5:37 AM
Sunset
8:10 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Worcester County is currently haze at 18°C. Precipitation is likely — peak probability 88% around 11 PM. Sunrise: 5:37AM · Sunset: 8:10PM.

Alerts

No active alerts for this location.
33 AQI · Good Dominant: O3 Air Quality
Hourly Forecast · Next 24 Hours
Now
18°
81%
10 PM
19°
68%
11 PM
19°
87%
12 AM
18°
84%
1 AM
18°
84%
2 AM
18°
84%
3 AM
18°
85%
4 AM
18°
77%
5 AM
16°
73%
6 AM
16°
62%
7 AM
16°
74%
8 AM
16°
77%
9 AM
17°
75%
10 AM
17°
75%
11 AM
17°
75%
12 PM
17°
66%
1 PM
18°
66%
2 PM
18°
69%
3 PM
18°
74%
4 PM
19°
73%
5 PM
21°
64%
6 PM
21°
63%
7 PM
20°
57%
8 PM
20°
46%
7-Day Forecast
Tonight
19° 16°
Haze with a 81% chance of rain.
Thu
21° 16°
Overcast with a 85% chance of rain.
Fri
27° 16°
Partly Cloudy with a 60% chance of rain.
Sat
31° 18°
Partly Cloudy with a 52% chance of rain.
Sun
30° 18°
Mostly Cloudy with a 58% chance of rain.
Mon
29° 15°
Rain, 71% chance.
Tue
32° 14°
Clear.
TimeTempConditionsPrecipWindHumidity
Now 18° Haze 81% 8 mph ENE 99%
10 PM 19° Overcast 68% 8 mph ENE 99%
11 PM 19° Overcast 87% 8 mph ENE 100%
12 AM 18° Overcast 84% 7 mph NE 100%
1 AM 18° Fog 84% 7 mph NE 100%
2 AM 18° Fog 84% 7 mph NE 99%
3 AM 18° Fog 85% 7 mph NNE 99%
4 AM 18° Rain 77% 7 mph NNE 99%
5 AM 16° Rain 73% 7 mph NNE 99%
6 AM 16° Overcast 62% 7 mph NNE 99%
7 AM 16° Overcast 74% 7 mph N 98%
8 AM 16° Overcast 77% 7 mph N 97%
9 AM 17° Overcast 75% 7 mph N 97%
10 AM 17° Overcast 75% 7 mph N 96%
11 AM 17° Overcast 75% 8 mph N 95%
12 PM 17° Mostly Cloudy 66% 8 mph NNE 94%
1 PM 18° Mostly Cloudy 66% 8 mph NNE 93%
2 PM 18° Mostly Cloudy 69% 8 mph NNE 92%
3 PM 18° Mostly Cloudy 74% 7 mph NNE 90%
4 PM 19° Overcast 73% 7 mph NNE 89%
5 PM 21° Overcast 64% 6 mph NNE 90%
6 PM 21° Rain 63% 6 mph N 91%
7 PM 20° Rain 57% 6 mph N 93%
8 PM 20° Rain 46% 6 mph N 94%
15-Day Forecast
Today
7/29
Haze
81%
16°
19°
Thu
7/30
Overcast
85%
16°
21°
Fri
7/31
Partly Cloudy
60%
16°
27°
Sat
8/1
Partly Cloudy
52%
18°
31°
Sun
8/2
Mostly Cloudy
58%
18°
30°
Mon
8/3
Rain
71%
15°
29°
Tue
8/4
Clear
17%
14°
32°
Wed
8/5
Clear
17%
17°
34°
Thu
8/6
Drizzle
44%
18°
34°
Fri
8/7
Rain
68%
19°
32°
Sat
8/8
Drizzle
60%
18°
34°
Sun
8/9
Drizzle
60%
18°
34°
Mon
8/10
Drizzle
60%
17°
32°
Tue
8/11
Drizzle
60%
17°
30°
Wed
8/12
Drizzle
60%
15°
30°
33
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
24 AQI 4.4 µg/m³
O3
Ground-level ozone
Dominant
33 AQI 36 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Today 33 Good 33 24
Fri 32 Good 32 19
Sat 31 Good 31 28
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 Wed Jul 29, 23:00'Z' · F0 · 130 (13 km CONUS/NA)
Hodograph · kt
10 20 30 40 SM
0–1 1–3 3–6 6–9 km
Instability
SBCAPE35 J/kg
MLCAPE12 J/kg
MUCAPE46 J/kg
SBCIN0 J/kg
MLCIN0 J/kg
Lifted Index0.0
Kinematics
0–6 km Shear17 kt
0–1 km Shear20 kt
Eff. Shear—
0–1 km SRH111
0–3 km SRH62
Eff. SRH—
Storm Motion133° @ 25 kt
0–1 km EHI0.0
Composite Parameters
Sig. Tornado0.0
STP (eff)—
Supercell—
K-Index34.3
Thermo & Levels
PWAT1.58 in
0–3 km LR4.9 °C/km
700–500 LR5.6 °C/km
Total Totals46.7
LCL974 hPa
LFC978 hPa
EL501 hPa
Freezing Lvl12,152 ft