Derby, Vermont

Last updated: 6:42 PM CDT  ·  Refresh
20°C
Feels like 22°
Mostly Cloudy
▲ 22°  /  ▼ 14°
Wind
4 mph NW
Humidity
92%
Dew Point
18°
Pressure
28.72 inHg
Visibility
10 mi
UV Index
0.0
Cloud Cover
60%
Sunrise
5:52 AM
Sunset
7:51 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Derby is currently mostly cloudy at 20°C. Dry conditions are expected through the next 24 hours. Sunrise: 5:52AM · Sunset: 7:51PM.

Alerts

No active alerts for this location.
32 AQI · Good Dominant: PM2.5 Air Quality
Hourly Forecast · Next 24 Hours
Now
20°
25%
8 PM
20°
37%
9 PM
18°
44%
10 PM
17°
36%
11 PM
17°
36%
12 AM
16°
13%
1 AM
16°
9%
2 AM
16°
11%
3 AM
16°
11%
4 AM
16°
14%
5 AM
14°
31%
6 AM
14°
32%
7 AM
15°
32%
8 AM
17°
32%
9 AM
18°
24%
10 AM
20°
25%
11 AM
21°
25%
12 PM
22°
25%
1 PM
23°
23%
2 PM
25°
23%
3 PM
24°
23%
4 PM
24°
23%
5 PM
23°
14%
6 PM
22°
7%
7-Day Forecast
Tonight
22° 14°
Mostly Cloudy with a 36% chance of rain.
Tue
25° 14°
Haze with a 32% chance of rain.
Wed
25° 13°
Partly Cloudy with a 22% chance of rain.
Thu
24° 12°
Partly Cloudy with a 28% chance of rain.
Fri
24° 11°
Partly Cloudy with a 22% chance of rain.
Sat
26° 11°
Rain, 65% chance.
Sun
23° 13°
Rain, 80% chance.
TimeTempConditionsPrecipWindHumidity
Now 20° Mostly Cloudy 25% 4 mph NW 92%
8 PM 20° Partly Cloudy 37% 3 mph N 93%
9 PM 18° Partly Cloudy 44% 2 mph N 94%
10 PM 17° Partly Cloudy 36% 2 mph NE 94%
11 PM 17° Partly Cloudy 36% 2 mph NE 95%
12 AM 16° Partly Cloudy 13% 2 mph ENE 95%
1 AM 16° Partly Cloudy 9% 2 mph NE 96%
2 AM 16° Partly Cloudy 11% 3 mph NE 97%
3 AM 16° Partly Cloudy 11% 2 mph NNE 98%
4 AM 16° Partly Cloudy 14% 2 mph NNE 98%
5 AM 14° Mostly Cloudy 31% 2 mph NNE 98%
6 AM 14° Mostly Cloudy 32% 2 mph NNE 97%
7 AM 15° Haze 32% 2 mph N 96%
8 AM 17° Fog 32% 2 mph N 92%
9 AM 18° Fog 24% 3 mph N 85%
10 AM 20° Fog 25% 4 mph NNW 79%
11 AM 21° Mostly Cloudy 25% 4 mph NNW 72%
12 PM 22° Mostly Cloudy 25% 4 mph NNW 67%
1 PM 23° Partly Cloudy 23% 4 mph NNW 62%
2 PM 25° Partly Cloudy 23% 4 mph NNW 61%
3 PM 24° Partly Cloudy 23% 4 mph NW 61%
4 PM 24° Partly Cloudy 23% 4 mph NW 61%
5 PM 23° Partly Cloudy 14% 4 mph NW 65%
6 PM 22° Partly Cloudy 7% 4 mph NW 69%
15-Day Forecast
Today
8/17
Mostly Cloudy
36%
14°
22°
Tue
8/18
Haze
32%
14°
25°
Wed
8/19
Partly Cloudy
22%
13°
25°
Thu
8/20
Partly Cloudy
28%
12°
24°
Fri
8/21
Partly Cloudy
22%
11°
24°
Sat
8/22
Rain
65%
11°
26°
Sun
8/23
Rain
80%
13°
23°
Mon
8/24
Rain
74%
12°
22°
Tue
8/25
Drizzle
53%
12°
23°
Wed
8/26
Rain
66%
12°
23°
Thu
8/27
Rain
60%
11°
20°
Fri
8/28
Drizzle
60%
9°
21°
Sat
8/29
Drizzle
60%
9°
21°
Sun
8/30
Drizzle
60%
9°
22°
Mon
8/31
Drizzle
60%
10°
22°
32
Good
U.S. Air Quality Index · Dominant: PM2.5
50 100 150 200

Air quality is satisfactory and poses little or no health risk.

Pollutant Breakdown · Today
PM2.5
Fine particulate matter
Dominant
32 AQI 5.9 µg/m³
O3
Ground-level ozone
25 AQI 28 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Tue 32 Good 25 32
Wed 37 Good 26 37
Thu 30 Good 27 30
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 Mon Aug 17, 21:00'Z' · F0 · 130 (13 km CONUS/NA)
Hodograph · kt
10 20 30 40 50 60 70 80 90 100 SM
0–1 1–3 3–6 6–9 km
Instability
SBCAPE59 J/kg
MLCAPE7 J/kg
MUCAPE59 J/kg
SBCIN-88 J/kg
MLCIN-0 J/kg
Lifted Index0.2
Kinematics
0–6 km Shear34 kt
0–1 km Shear6 kt
Eff. Shear—
0–1 km SRH6
0–3 km SRH76
Eff. SRH—
Storm Motion301° @ 25 kt
0–1 km EHI0.0
Composite Parameters
Sig. Tornado0.0
STP (eff)—
Supercell—
K-Index5.7
Thermo & Levels
PWAT0.96 in
0–3 km LR4.8 °C/km
700–500 LR5.6 °C/km
Total Totals41.1
LCL947 hPa
LFC491 hPa
EL342 hPa
Freezing Lvl13,606 ft