Heat Advisory — Western Shasta County Mountains Above 3000 ft, CA, Western Shasta County Foothills Between 1000-3000 ft, CA, Shasta Lake Area and Interstate 5 Between 1000-3000 ft, CA, South-Central Shasta County Including Redding Metro, CA, Eastern Shasta County Foothills Between 1000-3000 ft, CA, Eastern Shasta County Mountains and Southern Cascades Above 3000 ft, CA, Burney Basin, CA, Lassen Volcanic National Park, CA, Sierra Nevada of Tehama-Butte-Plumas Counties Between 1000-3000 ft, CA, Sierra Nevada of Tehama-Butte-Plumas Counties Above 3000 ft, CA, Northern Motherlode Between 1000-3000 ft, CA, Sierra Nevada of Yuba-Sierra-Nevada-Placer Counties Between 3000-5000 ft Including Interstate 80, CA, Sierra Nevada of Sierra-Nevada-Placer Counties Above 5000 ft Including Interstate 80, CA, Central Motherlode Between 1000-3000 ft, CA, Sierra Nevada of El Dorado and Amador Counties Between 3000-5000 ft Including Highway 50, CA, Southern Motherlode Between 1000-3000 ft, CA, Sierra Nevada of Calaveras and Tuolumne Counties Between 3000-5000 ft, CA, Tehama County Coast Range Above 3000 ft, CA, Western Tehama County Foothills Between 1000-3000 ft, CA, Northern Sacramento Valley in Tehama County, CA, Glenn and Colusa County Coast Range Above 3000 ft, CA, Central Glenn County Including Interstate 5, CA, Eastern Glenn County, CA, Butte County Below 1000 ft, CA, Western Glenn and Colusa County Foothills Between 1000-3000 ft, CA, Central Colusa County Including Interstate 5, CA, Eastern Colusa County, CA, Sutter and Yuba Counties Below 1000 ft, CA, Capay Hills of Yolo County and Vaca Hills of Solano County, CA, Western Yolo County Including Capay Valley and Interstate 505, CA, Central Yolo and Northeast Solano Counties Including Woodland and Davis, CA, Sacramento Metro and Western El Dorado and Amador Counties, CA, San Joaquin County Delta, CA, Central San Joaquin County Including Stockton Metro, CA, Tracy Triangle Below 1000 ft, CA, Northeastern San Joaquin Valley Below 1000 ft, CA, Eastern Diablo Range Above 1000 ft, CA, Western Stanislaus County Below 1000 ft Including Interstate 5, CA, Central Stanislaus County Including Modesto Metro, CA 12:00 AM

Lassen Volcanic National Park, Shasta County, California, United States

Last updated: 3:27 AM CDT  ·  Refresh
19°C
Feels like 16°
Clear
▲ 31°  /  ▼ 14°
Wind
2 mph NNE
Humidity
25%
Dew Point
-2°
Pressure
23.73 inHg
Visibility
10 mi
UV Index
0.0
Cloud Cover
0%
Sunrise
6:08 AM
Sunset
8:12 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Lassen Volcanic National Park is currently clear at 19°C. Dry conditions are expected through the next 24 hours. Sunrise: 6:08AM · Sunset: 8:12PM.

Alerts

Heat Advisory
Western Shasta County Mountains Above 3000 ft, CA, Western Shasta County Foothills Between 1000-3000 ft, CA, Shasta Lake Area and Interstate 5 Between 1000-3000 ft, CA, South-Central Shasta County Including Redding Metro, CA, Eastern Shasta County Foothills Between 1000-3000 ft, CA, Eastern Shasta County Mountains and Southern Cascades Above 3000 ft, CA, Burney Basin, CA, Lassen Volcanic National Park, CA, Sierra Nevada of Tehama-Butte-Plumas Counties Between 1000-3000 ft, CA, Sierra Nevada of Tehama-Butte-Plumas Counties Above 3000 ft, CA, Northern Motherlode Between 1000-3000 ft, CA, Sierra Nevada of Yuba-Sierra-Nevada-Placer Counties Between 3000-5000 ft Including Interstate 80, CA, Sierra Nevada of Sierra-Nevada-Placer Counties Above 5000 ft Including Interstate 80, CA, Central Motherlode Between 1000-3000 ft, CA, Sierra Nevada of El Dorado and Amador Counties Between 3000-5000 ft Including Highway 50, CA, Southern Motherlode Between 1000-3000 ft, CA, Sierra Nevada of Calaveras and Tuolumne Counties Between 3000-5000 ft, CA, Tehama County Coast Range Above 3000 ft, CA, Western Tehama County Foothills Between 1000-3000 ft, CA, Northern Sacramento Valley in Tehama County, CA, Glenn and Colusa County Coast Range Above 3000 ft, CA, Central Glenn County Including Interstate 5, CA, Eastern Glenn County, CA, Butte County Below 1000 ft, CA, Western Glenn and Colusa County Foothills Between 1000-3000 ft, CA, Central Colusa County Including Interstate 5, CA, Eastern Colusa County, CA, Sutter and Yuba Counties Below 1000 ft, CA, Capay Hills of Yolo County and Vaca Hills of Solano County, CA, Western Yolo County Including Capay Valley and Interstate 505, CA, Central Yolo and Northeast Solano Counties Including Woodland and Davis, CA, Sacramento Metro and Western El Dorado and Amador Counties, CA, San Joaquin County Delta, CA, Central San Joaquin County Including Stockton Metro, CA, Tracy Triangle Below 1000 ft, CA, Northeastern San Joaquin Valley Below 1000 ft, CA, Eastern Diablo Range Above 1000 ft, CA, Western Stanislaus County Below 1000 ft Including Interstate 5, CA, Central Stanislaus County Including Modesto Metro, CA
Expires 12:00 AM
47 AQI · Good Dominant: O3 Air Quality
Hourly Forecast · Next 24 Hours
Now
19°
3%
2 AM
19°
3%
3 AM
19°
3%
4 AM
18°
3%
5 AM
14°
3%
6 AM
15°
3%
7 AM
17°
3%
8 AM
19°
3%
9 AM
21°
3%
10 AM
23°
3%
11 AM
24°
3%
12 PM
24°
3%
1 PM
28°
3%
2 PM
29°
3%
3 PM
28°
3%
4 PM
28°
3%
5 PM
31°
3%
6 PM
29°
3%
7 PM
27°
3%
8 PM
25°
3%
9 PM
22°
3%
10 PM
22°
3%
11 PM
21°
3%
12 AM
21°
3%
7-Day Forecast
Today
31° 14°
Clear.
Sun
31° 14°
Clear.
Mon
31° 13°
Clear.
Tue
33° 12°
Clear.
Wed
33° 11°
Clear.
Thu
31° 12°
Clear.
Fri
28° 12°
Rain, 28% chance.
TimeTempConditionsPrecipWindHumidity
Now 19° Clear 3% 2 mph NNE 25%
2 AM 19° Clear 3% 3 mph N 24%
3 AM 19° Clear 3% 3 mph N 25%
4 AM 18° Clear 3% 2 mph NNE 25%
5 AM 14° Clear 3% 2 mph SE 25%
6 AM 15° Clear 3% 3 mph SSE 25%
7 AM 17° Clear 3% 4 mph S 25%
8 AM 19° Clear 3% 4 mph SSW 24%
9 AM 21° Clear 3% 6 mph SW 21%
10 AM 23° Clear 3% 7 mph SW 19%
11 AM 24° Clear 3% 8 mph WSW 17%
12 PM 24° Clear 3% 9 mph WSW 16%
1 PM 28° Clear 3% 10 mph WSW 15%
2 PM 29° Clear 3% 10 mph WSW 14%
3 PM 28° Clear 3% 10 mph W 14%
4 PM 28° Clear 3% 10 mph W 13%
5 PM 31° Clear 3% 10 mph W 13%
6 PM 29° Clear 3% 8 mph W 14%
7 PM 27° Clear 3% 7 mph W 16%
8 PM 25° Clear 3% 6 mph W 18%
9 PM 22° Clear 3% 5 mph W 19%
10 PM 22° Clear 3% 4 mph W 20%
11 PM 21° Clear 3% 4 mph WNW 21%
12 AM 21° Clear 3% 3 mph W 21%
15-Day Forecast
Today
8/8
Clear
3%
14°
31°
Sun
8/9
Clear
3%
14°
31°
Mon
8/10
Clear
3%
13°
31°
Tue
8/11
Clear
3%
12°
33°
Wed
8/12
Clear
8%
11°
33°
Thu
8/13
Clear
8%
12°
31°
Fri
8/14
Rain
28%
12°
28°
Sat
8/15
Drizzle
43%
29°
Sun
8/16
Drizzle
44%
28°
Mon
8/17
Drizzle
51%
28°
Tue
8/18
Clear
25%
12°
27°
Wed
8/19
Clear
25%
12°
26°
Thu
8/20
Drizzle
60%
12°
26°
Fri
8/21
Clear
25%
12°
27°
Sat
8/22
Clear
25%
13°
28°
47
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
23 AQI 4.2 µg/m³
O3
Ground-level ozone
Dominant
47 AQI 51 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Today 47 Good 47 23
Sun 49 Good 49 24
Mon 58 Moderate 58 24
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 LCL0°C Temperature (°C) Pressure (hPa)
Temp Dewpoint Parcel (SB) CAPE CIN Dry adiabat Moist adiabat Mixing ratio
RAP
Valid Sat Aug 8, 07:00'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
SBCAPE0 J/kg
MLCAPE3 J/kg
MUCAPE0 J/kg
SBCIN-9209 J/kg
MLCIN0 J/kg
Lifted Index7.0
Kinematics
0–6 km Shear19 kt
0–1 km Shear15 kt
Eff. Shear
0–1 km SRH-62
0–3 km SRH-79
Eff. SRH
Storm Motion195° @ 24 kt
0–1 km EHI-0.0
Composite Parameters
Sig. Tornado-0.0
STP (eff)
Supercell
K-Index
Thermo & Levels
PWAT0.58 in
0–3 km LR6.4 °C/km
700–500 LR8.4 °C/km
Total Totals
LCL585 hPa
LFC
EL
Freezing Lvl9,701 ft