Lassen-Eastern Plumas-Eastern Sierra Counties, CA

Last updated: 12:35 AM CDT  ·  Refresh
26°C
Feels like 30°
Partly Cloudy
▲ 34°  /  ▼ 24°
Wind
5 mph E
Humidity
84%
Dew Point
24°
Pressure
29.95 inHg
Visibility
9 mi
UV Index
0.0
Cloud Cover
43%
Sunrise
6:41 AM
Sunset
7:27 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Lassen-Eastern Plumas-Eastern Sierra Counties is currently partly cloudy at 26°C. Precipitation is likely — peak probability 58% around 11 AM. Atmospheric instability is elevated (CAPE up to 1899 J/kg) — isolated convective development possible. Sunrise: 6:41AM · Sunset: 7:27PM.

Alerts

No active alerts for this location.
27 AQI · Good Dominant: O3 Air Quality
Hourly Forecast · Next 24 Hours
Now
26°
11%
1 AM
27°
13%
2 AM
26°
12%
3 AM
26°
7%
4 AM
26°
18%
5 AM
24°
18%
6 AM
24°
23%
7 AM
25°
31%
8 AM
27°
53%
9 AM
29°
53%
10 AM
30°
53%
11 AM
31°
58%
12 PM
32°
58%
1 PM
33°
58%
2 PM
33°
54%
3 PM
33°
49%
4 PM
33°
39%
5 PM
33°
42%
6 PM
33°
24%
7 PM
32°
12%
8 PM
31°
12%
9 PM
30°
11%
10 PM
29°
11%
11 PM
29°
11%
7-Day Forecast
Today
34° 24°
Rain, 58% chance.
Wed
36° 24°
Partly Cloudy with a 64% chance of rain.
Thu
37° 24°
Partly Cloudy with a 75% chance of rain.
Fri
34° 24°
Fog with a 75% chance of rain.
Sat
34° 24°
Rain, 64% chance.
Sun
34° 23°
Clear with a 30% chance of rain.
Mon
36° 23°
Rain, 63% chance.
TimeTempConditionsPrecipWindHumidity
Now 26° Partly Cloudy 11% 5 mph E 84%
1 AM 27° Mostly Cloudy 13% 6 mph ESE 85%
2 AM 26° Mostly Cloudy 12% 5 mph ESE 86%
3 AM 26° Mostly Cloudy 7% 5 mph E 88%
4 AM 26° Partly Cloudy 18% 5 mph E 89%
5 AM 24° Partly Cloudy 18% 5 mph E 90%
6 AM 24° Partly Cloudy 23% 5 mph E 91%
7 AM 25° Partly Cloudy 31% 6 mph E 88%
8 AM 27° Partly Cloudy 53% 6 mph ESE 81%
9 AM 29° Partly Cloudy 53% 8 mph ESE 74%
10 AM 30° Partly Cloudy 53% 8 mph ESE 68%
11 AM 31° Mostly Cloudy 58% 8 mph SE 65%
12 PM 32° Rain 58% 9 mph SE 62%
1 PM 33° Rain 58% 9 mph SE 61%
2 PM 33° Rain 54% 8 mph SE 61%
3 PM 33° Rain 49% 8 mph SE 60%
4 PM 33° Mostly Cloudy 39% 8 mph SE 62%
5 PM 33° Mostly Cloudy 42% 8 mph SE 65%
6 PM 33° Mostly Cloudy 24% 8 mph SE 69%
7 PM 32° Mostly Cloudy 12% 7 mph SE 72%
8 PM 31° Mostly Cloudy 12% 6 mph SE 75%
9 PM 30° Mostly Cloudy 11% 6 mph SE 78%
10 PM 29° Mostly Cloudy 11% 6 mph SE 80%
11 PM 29° Mostly Cloudy 11% 6 mph SE 82%
15-Day Forecast
Today
9/1
Rain
58%
24°
34°
Wed
9/2
Partly Cloudy
64%
24°
36°
Thu
9/3
Partly Cloudy
75%
24°
37°
Fri
9/4
Fog
75%
24°
34°
Sat
9/5
Rain
64%
24°
34°
Sun
9/6
Clear
30%
23°
34°
Mon
9/7
Rain
63%
23°
36°
Tue
9/8
Rain
68%
24°
36°
Wed
9/9
Drizzle
44%
23°
36°
Thu
9/10
Drizzle
51%
24°
36°
Fri
9/11
Drizzle
60%
23°
34°
Sat
9/12
Drizzle
60%
23°
34°
Sun
9/13
Drizzle
60%
23°
34°
Mon
9/14
Drizzle
60%
22°
33°
Tue
9/15
Drizzle
60%
22°
33°
27
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
12 AQI 2.1 µg/m³
O3
Ground-level ozone
Dominant
27 AQI 30 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Today 27 Good 27 12
Wed 40 Good 40 28
Thu 43 Good 43 31
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 Sep 1, 04:00'Z' · F0 · 130 (13 km CONUS/NA)
Hodograph · kt
10 20 30 40 SM
0–1 1–3 3–6 6–9 km
Instability
SBCAPE1227 J/kg
MLCAPE524 J/kg
MUCAPE1227 J/kg
SBCIN-74 J/kg
MLCIN-70 J/kg
Lifted Index-3.1
Kinematics
0–6 km Shear12 kt
0–1 km Shear18 kt
Eff. Shear10 kt
0–1 km SRH51
0–3 km SRH64
Eff. SRH64
Storm Motion142° @ 25 kt
0–1 km EHI0.4
Composite Parameters
Sig. Tornado0.0
STP (eff)0.0
Supercell0.0
K-Index31.2
Thermo & Levels
PWAT2.18 in
0–3 km LR5.3 °C/km
700–500 LR5.3 °C/km
Total Totals40.6
LCL981 hPa
LFC836 hPa
EL153 hPa
Freezing Lvl16,539 ft