Herkimer County, New York, United States

Last updated: 8:01 PM CDT  ·  Refresh
19°C
Feels like 19°
Mostly Cloudy
▲ 23°  /  ▼ 13°
Wind
8 mph SSE
Humidity
93%
Dew Point
18°
Pressure
27.65 inHg
Visibility
10 mi
UV Index
0.0
Cloud Cover
78%
Sunrise
5:38 AM
Sunset
8:33 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Herkimer County is currently mostly cloudy at 19°C. Precipitation is likely — peak probability 90% around 9 PM. Atmospheric instability is elevated (CAPE up to 638 J/kg) — isolated convective development possible. Sunrise: 5:38AM · Sunset: 8:33PM.

Alerts

No active alerts for this location.
63 AQI · Moderate Dominant: PM2.5 Air Quality
Hourly Forecast · Next 24 Hours
Now
19°
90%
10 PM
18°
75%
11 PM
18°
81%
12 AM
18°
81%
1 AM
18°
75%
2 AM
17°
70%
3 AM
17°
61%
4 AM
17°
48%
5 AM
16°
52%
6 AM
15°
53%
7 AM
14°
44%
8 AM
14°
57%
9 AM
14°
62%
10 AM
13°
66%
11 AM
13°
35%
12 PM
13°
35%
1 PM
14°
42%
2 PM
14°
39%
3 PM
14°
39%
4 PM
16°
35%
5 PM
16°
31%
6 PM
16°
27%
7 PM
16°
24%
8 PM
16°
26%
7-Day Forecast
Tonight
23° 13°
Mostly Cloudy with a 90% chance of rain.
Wed
19° 11°
Overcast with a 81% chance of rain.
Thu
23° 7°
Mostly Clear.
Fri
26° 9°
Clear with a 32% chance of rain.
Sat
26° 13°
Clear.
Sun
27° 13°
Rain, 70% chance.
Mon
28° 14°
Rain, 71% chance.
TimeTempConditionsPrecipWindHumidity
Now 19° Mostly Cloudy 90% 8 mph SSE 93%
10 PM 18° Mostly Cloudy 75% 7 mph SSE 96%
11 PM 18° Overcast 81% 7 mph S 98%
12 AM 18° Rain 81% 8 mph SSW 99%
1 AM 18° Thunderstorm 75% 8 mph SW 99%
2 AM 17° Haze 70% 8 mph SW 99%
3 AM 17° Overcast 61% 8 mph SW 99%
4 AM 17° Fog 48% 9 mph SW 98%
5 AM 16° Overcast 52% 9 mph WSW 98%
6 AM 15° Overcast 53% 9 mph WSW 98%
7 AM 14° Haze 44% 10 mph WSW 98%
8 AM 14° Overcast 57% 10 mph WSW 98%
9 AM 14° Overcast 62% 11 mph WSW 95%
10 AM 13° Overcast 66% 12 mph WSW 90%
11 AM 13° Overcast 35% 12 mph WSW 86%
12 PM 13° Overcast 35% 12 mph WSW 85%
1 PM 14° Overcast 42% 12 mph WSW 83%
2 PM 14° Overcast 39% 12 mph WSW 85%
3 PM 14° Overcast 39% 12 mph WSW 84%
4 PM 16° Overcast 35% 12 mph WSW 82%
5 PM 16° Overcast 31% 12 mph WSW 80%
6 PM 16° Overcast 27% 11 mph WSW 81%
7 PM 16° Mostly Cloudy 24% 10 mph W 82%
8 PM 16° Mostly Cloudy 26% 9 mph W 83%
15-Day Forecast
Today
7/21
Mostly Cloudy
90%
13°
23°
Wed
7/22
Overcast
81%
11°
19°
Thu
7/23
Mostly Clear
3%
7°
23°
Fri
7/24
Clear
32%
9°
26°
Sat
7/25
Clear
8%
13°
26°
Sun
7/26
Rain
70%
13°
27°
Mon
7/27
Rain
71%
14°
28°
Tue
7/28
Rain
82%
13°
24°
Wed
7/29
Rain
69%
12°
21°
Thu
7/30
Drizzle
51%
11°
23°
Fri
7/31
Drizzle
60%
11°
27°
Sat
8/1
Drizzle
60%
13°
25°
Sun
8/2
Drizzle
60%
13°
25°
Mon
8/3
Drizzle
60%
14°
25°
Tue
8/4
Drizzle
60%
14°
26°
63
Moderate
U.S. Air Quality Index · Dominant: PM2.5
50 100 150 200

Air quality is acceptable. Unusually sensitive people should consider limiting prolonged outdoor exertion.

Pollutant Breakdown · Today
PM2.5
Fine particulate matter
Dominant
63 AQI 15.6 µg/m³
O3
Ground-level ozone
39 AQI 42 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Today 63 Moderate 39 63
Thu 30 Good 30 19
Fri 32 Good 32 23
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 Tue Jul 21, 23:00'Z' · F0 · 130 (13 km CONUS/NA)
Hodograph · kt
10 20 30 40 50 60 70 80 SM
0–1 1–3 3–6 6–9 km
Instability
SBCAPE486 J/kg
MLCAPE483 J/kg
MUCAPE650 J/kg
SBCIN-21 J/kg
MLCIN0 J/kg
Lifted Index-1.9
Kinematics
0–6 km Shear39 kt
0–1 km Shear20 kt
Eff. Shear32 kt
0–1 km SRH-49
0–3 km SRH-83
Eff. SRH-83
Storm Motion191° @ 34 kt
0–1 km EHI-0.2
Composite Parameters
Sig. Tornado0.0
STP (eff)0.0
Supercell0.0
K-Index34.7
Thermo & Levels
PWAT1.34 in
0–3 km LR5.8 °C/km
700–500 LR5.3 °C/km
Total Totals47.5
LCL919 hPa
LFC819 hPa
EL289 hPa
Freezing Lvl10,889 ft