Stillwater County, Montana, United States

Last updated: 1:28 AM CDT  ·  Refresh
18°C
Feels like 16°
Mostly Clear
▲ 27°  /  ▼ 11°
Wind
3 mph SW
Humidity
39%
Dew Point
4°
Pressure
26.11 inHg
Visibility
10 mi
UV Index
0.0
Cloud Cover
21%
Sunrise
6:29 AM
Sunset
8:07 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Stillwater County is currently mostly clear at 18°C. Dry conditions are expected through the next 24 hours. Sunrise: 6:29AM · Sunset: 8:07PM.

Alerts

No active alerts for this location.
84 AQI · Moderate Dominant: PM2.5 Air Quality
Hourly Forecast · Next 24 Hours
Now
18°
11%
1 AM
16°
11%
2 AM
15°
3%
3 AM
14°
3%
4 AM
14°
3%
5 AM
11°
3%
6 AM
11°
3%
7 AM
12°
7%
8 AM
14°
7%
9 AM
17°
9%
10 AM
19°
10%
11 AM
21°
10%
12 PM
22°
10%
1 PM
26°
10%
2 PM
27°
10%
3 PM
27°
10%
4 PM
27°
11%
5 PM
27°
5%
6 PM
26°
5%
7 PM
23°
5%
8 PM
22°
5%
9 PM
20°
15%
10 PM
19°
15%
11 PM
18°
15%
7-Day Forecast
Today
27° 11°
Mostly Clear.
Wed
32° 11°
Mostly Clear with a 26% chance of rain.
Thu
33° 12°
Partly Cloudy with a 33% chance of rain.
Fri
30° 13°
Partly Cloudy with a 40% chance of rain.
Sat
29° 12°
Rain, 29% chance.
Sun
28° 9°
Clear.
Mon
31° 11°
Rain, 27% chance.
TimeTempConditionsPrecipWindHumidity
Now 18° Mostly Clear 11% 3 mph SW 39%
1 AM 16° Partly Cloudy 11% 3 mph NW 38%
2 AM 15° Partly Cloudy 3% 3 mph NW 41%
3 AM 14° Partly Cloudy 3% 3 mph NW 44%
4 AM 14° Partly Cloudy 3% 3 mph NNW 46%
5 AM 11° Mostly Clear 3% 3 mph NNW 49%
6 AM 11° Mostly Clear 3% 3 mph NNW 50%
7 AM 12° Mostly Clear 7% 2 mph N 47%
8 AM 14° Mostly Clear 7% 3 mph E 43%
9 AM 17° Mostly Clear 9% 4 mph E 39%
10 AM 19° Partly Cloudy 10% 6 mph ESE 35%
11 AM 21° Partly Cloudy 10% 7 mph ESE 32%
12 PM 22° Partly Cloudy 10% 7 mph ESE 30%
1 PM 26° Partly Cloudy 10% 7 mph ESE 28%
2 PM 27° Partly Cloudy 10% 6 mph ESE 27%
3 PM 27° Partly Cloudy 10% 6 mph ESE 28%
4 PM 27° Mostly Clear 11% 7 mph SE 29%
5 PM 27° Clear 5% 7 mph SE 30%
6 PM 26° Clear 5% 8 mph SE 33%
7 PM 23° Clear 5% 7 mph SE 36%
8 PM 22° Mostly Clear 5% 6 mph SE 40%
9 PM 20° Mostly Clear 15% 5 mph ESE 44%
10 PM 19° Mostly Clear 15% 5 mph ESE 47%
11 PM 18° Mostly Clear 15% 4 mph SE 51%
15-Day Forecast
Today
8/25
Mostly Clear
11%
11°
27°
Wed
8/26
Mostly Clear
26%
11°
32°
Thu
8/27
Partly Cloudy
33%
12°
33°
Fri
8/28
Partly Cloudy
40%
13°
30°
Sat
8/29
Rain
29%
12°
29°
Sun
8/30
Clear
17%
9°
28°
Mon
8/31
Rain
27%
11°
31°
Tue
9/1
Clear
18%
10°
31°
Wed
9/2
Drizzle
44%
12°
30°
Thu
9/3
Drizzle
44%
11°
28°
Fri
9/4
Drizzle
60%
12°
27°
Sat
9/5
Drizzle
60%
12°
25°
Sun
9/6
Drizzle
60%
12°
25°
Mon
9/7
Drizzle
60%
11°
24°
Tue
9/8
Drizzle
60%
12°
25°
84
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
84 AQI 26.9 µg/m³
O3
Ground-level ozone
38 AQI 42 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Today 84 Moderate 38 84
Wed 42 Good 42 41
Thu 44 Good 44 38
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, 05:00'Z' · F0 · 130 (13 km CONUS/NA)
Hodograph · kt
10 20 30 40 50 60 SM
0–1 1–3 3–6 6–9 km
Instability
SBCAPE0 J/kg
MLCAPE7 J/kg
MUCAPE0 J/kg
SBCIN0 J/kg
MLCIN0 J/kg
Lifted Index6.5
Kinematics
0–6 km Shear24 kt
0–1 km Shear12 kt
Eff. Shear—
0–1 km SRH-8
0–3 km SRH225
Eff. SRH—
Storm Motion325° @ 20 kt
0–1 km EHI-0.0
Composite Parameters
Sig. Tornado0.0
STP (eff)—
Supercell—
K-Index20.6
Thermo & Levels
PWAT0.62 in
0–3 km LR5.2 °C/km
700–500 LR7.0 °C/km
Total Totals43.2
LCL722 hPa
LFC884 hPa
EL884 hPa
Freezing Lvl10,676 ft