Flash Flood Warning — Hartford County, CT, Tolland County, CT, Franklin County, MA, Hampden County, MA, Hampshire County, MA, Worcester County, MA 8:00 PM

Hampden County, Massachusetts, United States

Last updated: 7:29 PM CDT  ·  Refresh
21°C
Feels like 22°
Partly Cloudy
▲ 21°  /  ▼ 17°
Wind
5 mph ESE
Humidity
92%
Dew Point
19°
Pressure
29.43 inHg
Visibility
10 mi
UV Index
0.0
Cloud Cover
51%
Sunrise
5:40 AM
Sunset
8:12 PM
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WeatherAI™ Analysis

WeatherAI Analysis: Hampden County is currently partly cloudy at 20°C. Precipitation is likely — peak probability 79% around 7 AM. Atmospheric instability is elevated (CAPE up to 530 J/kg) — isolated convective development possible. Sunrise: 5:40AM · Sunset: 8:12PM.

Alerts

Flash Flood Warning
Hartford County, CT, Tolland County, CT, Franklin County, MA, Hampden County, MA, Hampshire County, MA, Worcester County, MA
Expires 8:00 PM
31 AQI · Good Dominant: O3 Air Quality
Hourly Forecast · Next 24 Hours
Now
21°
65%
9 PM
20°
73%
10 PM
19°
73%
11 PM
19°
72%
12 AM
19°
57%
1 AM
18°
61%
2 AM
18°
57%
3 AM
18°
57%
4 AM
18°
62%
5 AM
17°
62%
6 AM
17°
70%
7 AM
17°
79%
8 AM
17°
76%
9 AM
17°
68%
10 AM
17°
76%
11 AM
18°
76%
12 PM
18°
65%
1 PM
20°
60%
2 PM
21°
57%
3 PM
20°
57%
4 PM
21°
52%
5 PM
23°
27%
6 PM
23°
27%
7 PM
23°
18%
7-Day Forecast
Tonight
21° 17°
Mostly Cloudy with a 72% chance of rain.
Thu
23° 17°
Overcast with a 76% chance of rain.
Fri
28° 16°
Partly Cloudy with a 52% chance of rain.
Sat
31° 18°
Mostly Cloudy with a 60% chance of rain.
Sun
29° 18°
Drizzle, 70% chance.
Mon
28° 16°
Rain, 83% chance.
Tue
31° 16°
Clear.
TimeTempConditionsPrecipWindHumidity
Now 21° Partly Cloudy 65% 5 mph ESE 92%
9 PM 20° Rain 73% 5 mph ESE 92%
10 PM 19° Mostly Cloudy 73% 5 mph E 93%
11 PM 19° Mostly Cloudy 72% 5 mph ENE 94%
12 AM 19° Mostly Cloudy 57% 4 mph NE 96%
1 AM 18° Mostly Cloudy 61% 5 mph NNE 97%
2 AM 18° Mostly Cloudy 57% 5 mph NNE 98%
3 AM 18° Mostly Cloudy 57% 5 mph NNE 98%
4 AM 18° Mostly Cloudy 62% 6 mph NNE 98%
5 AM 17° Mostly Cloudy 62% 6 mph N 98%
6 AM 17° Rain 70% 6 mph N 96%
7 AM 17° Overcast 79% 6 mph N 94%
8 AM 17° Overcast 76% 7 mph N 94%
9 AM 17° Overcast 68% 7 mph N 94%
10 AM 17° Rain 76% 8 mph N 95%
11 AM 18° Rain 76% 8 mph N 95%
12 PM 18° Overcast 65% 8 mph N 92%
1 PM 20° Overcast 60% 8 mph N 90%
2 PM 21° Mostly Cloudy 57% 8 mph N 89%
3 PM 20° Mostly Cloudy 57% 8 mph N 88%
4 PM 21° Mostly Cloudy 52% 7 mph NNW 86%
5 PM 23° Mostly Cloudy 27% 7 mph NNW 86%
6 PM 23° Partly Cloudy 27% 6 mph NNW 87%
7 PM 23° Partly Cloudy 18% 6 mph NNW 88%
15-Day Forecast
Today
7/29
Mostly Cloudy
72%
17°
21°
Thu
7/30
Overcast
76%
17°
23°
Fri
7/31
Partly Cloudy
52%
16°
28°
Sat
8/1
Mostly Cloudy
60%
18°
31°
Sun
8/2
Drizzle
70%
18°
29°
Mon
8/3
Rain
83%
16°
28°
Tue
8/4
Clear
15%
16°
31°
Wed
8/5
Partly Cloudy
16%
17°
33°
Thu
8/6
Drizzle
35%
19°
32°
Fri
8/7
Thunderstorm
76%
20°
32°
Sat
8/8
Drizzle
60%
19°
34°
Sun
8/9
Drizzle
60%
18°
33°
Mon
8/10
Drizzle
60%
17°
30°
Tue
8/11
Drizzle
60%
16°
29°
Wed
8/12
Drizzle
60%
16°
28°
31
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 3.7 µg/m³
O3
Ground-level ozone
Dominant
31 AQI 35 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Today 31 Good 31 21
Fri 27 Good 27 19
Sat 45 Good 35 45
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
SBCAPE368 J/kg
MLCAPE519 J/kg
MUCAPE738 J/kg
SBCIN-15 J/kg
MLCIN0 J/kg
Lifted Index-1.8
Kinematics
0–6 km Shear15 kt
0–1 km Shear12 kt
Eff. Shear17 kt
0–1 km SRH37
0–3 km SRH-22
Eff. SRH-22
Storm Motion152° @ 22 kt
0–1 km EHI0.1
Composite Parameters
Sig. Tornado0.0
STP (eff)0.0
Supercell0.0
K-Index35.9
Thermo & Levels
PWAT1.70 in
0–3 km LR5.3 °C/km
700–500 LR5.9 °C/km
Total Totals48.7
LCL979 hPa
LFC866 hPa
EL284 hPa
Freezing Lvl12,585 ft