Jefferson County, New York, United States

Last updated: 9:52 PM CDT  ·  Refresh
17°C
Feels like 17°
Haze
▲ 20°  /  ▼ 13°
Wind
7 mph SW
Humidity
94%
Dew Point
16°
Pressure
29.48 inHg
Visibility
1 mi
UV Index
0.0
Cloud Cover
82%
Sunrise
6:18 AM
Sunset
7:53 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Jefferson County is currently haze at 17°C. Precipitation is likely — peak probability 68% around 10 PM. Sunrise: 6:18AM · Sunset: 7:53PM.

Alerts

No active alerts for this location.
21 AQI · Good Dominant: O3 Air Quality
Hourly Forecast · Next 24 Hours
Now
17°
68%
11 PM
17°
43%
12 AM
17°
43%
1 AM
16°
32%
2 AM
16°
28%
3 AM
15°
25%
4 AM
14°
12%
5 AM
13°
28%
6 AM
13°
35%
7 AM
14°
40%
8 AM
15°
47%
9 AM
17°
53%
10 AM
18°
53%
11 AM
18°
61%
12 PM
19°
65%
1 PM
20°
65%
2 PM
20°
65%
3 PM
21°
60%
4 PM
21°
54%
5 PM
20°
44%
6 PM
19°
48%
7 PM
19°
41%
8 PM
19°
41%
9 PM
18°
33%
7-Day Forecast
Tonight
20° 13°
Haze with a 68% chance of rain.
Tue
22° 13°
Partly Cloudy with a 65% chance of rain.
Wed
26° 13°
Mostly Clear.
Thu
27° 17°
Drizzle, 60% chance.
Fri
24° 11°
Rain, 42% chance.
Sat
22° 10°
Drizzle, 43% chance.
Sun
27° 13°
Clear with a 63% chance of rain.
TimeTempConditionsPrecipWindHumidity
Now 17° Haze 68% 7 mph SW 94%
11 PM 17° Mostly Cloudy 43% 6 mph WSW 94%
12 AM 17° Partly Cloudy 43% 5 mph WSW 94%
1 AM 16° Mostly Clear 32% 5 mph W 95%
2 AM 16° Mostly Clear 28% 5 mph WSW 95%
3 AM 15° Mostly Clear 25% 4 mph W 96%
4 AM 14° Partly Cloudy 12% 4 mph WSW 96%
5 AM 13° Partly Cloudy 28% 4 mph WSW 95%
6 AM 13° Partly Cloudy 35% 4 mph WSW 95%
7 AM 14° Partly Cloudy 40% 4 mph W 95%
8 AM 15° Partly Cloudy 47% 5 mph WNW 91%
9 AM 17° Partly Cloudy 53% 6 mph WNW 86%
10 AM 18° Partly Cloudy 53% 6 mph WNW 81%
11 AM 18° Mostly Cloudy 61% 7 mph WNW 80%
12 PM 19° Mostly Cloudy 65% 8 mph WNW 79%
1 PM 20° Mostly Cloudy 65% 8 mph WNW 78%
2 PM 20° Mostly Cloudy 65% 7 mph WNW 77%
3 PM 21° Mostly Cloudy 60% 7 mph WNW 75%
4 PM 21° Partly Cloudy 54% 7 mph WNW 75%
5 PM 20° Partly Cloudy 44% 5 mph W 77%
6 PM 19° Partly Cloudy 48% 5 mph W 80%
7 PM 19° Partly Cloudy 41% 6 mph WSW 83%
8 PM 19° Partly Cloudy 41% 5 mph WSW 85%
9 PM 18° Partly Cloudy 33% 5 mph WSW 87%
15-Day Forecast
Today
8/24
Haze
68%
13°
20°
Tue
8/25
Partly Cloudy
65%
13°
22°
Wed
8/26
Mostly Clear
7%
13°
26°
Thu
8/27
Drizzle
60%
17°
27°
Fri
8/28
Rain
42%
11°
24°
Sat
8/29
Drizzle
43%
10°
22°
Sun
8/30
Clear
63%
13°
27°
Mon
8/31
Rain
63%
13°
26°
Tue
9/1
Drizzle
44%
10°
23°
Wed
9/2
Drizzle
44%
13°
23°
Thu
9/3
Drizzle
60%
12°
23°
Fri
9/4
Drizzle
60%
13°
24°
Sat
9/5
Drizzle
60%
13°
25°
Sun
9/6
Drizzle
60%
14°
26°
Mon
9/7
Drizzle
60%
15°
26°
21
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
11 AQI 2.1 µg/m³
O3
Ground-level ozone
Dominant
21 AQI 23 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Today 21 Good 21 11
Wed 20 Good 20 19
Thu 32 Good 25 32
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 Aug 25, 01:00'Z' · F0 · 130 (13 km CONUS/NA)
Hodograph · kt
10 20 30 40 50 SM
0–1 1–3 3–6 6–9 km
Instability
SBCAPE203 J/kg
MLCAPE183 J/kg
MUCAPE221 J/kg
SBCIN-2 J/kg
MLCIN0 J/kg
Lifted Index-0.8
Kinematics
0–6 km Shear21 kt
0–1 km Shear16 kt
Eff. Shear16 kt
0–1 km SRH65
0–3 km SRH96
Eff. SRH96
Storm Motion325° @ 13 kt
0–1 km EHI0.1
Composite Parameters
Sig. Tornado0.0
STP (eff)0.0
Supercell0.0
K-Index33.0
Thermo & Levels
PWAT1.33 in
0–3 km LR5.6 °C/km
700–500 LR6.1 °C/km
Total Totals50.0
LCL986 hPa
LFC941 hPa
EL368 hPa
Freezing Lvl9,800 ft