Severe Thunderstorm Warning — Duval County, FL, Nassau County, FL 5:45 PM Severe Thunderstorm Watch 9:00 PM Excessive Heat Watch 7:00 PM Extreme Heat Warning — Suwannee, FL, Baker, FL, Inland Nassau, FL, Union, FL, Bradford, FL, Gilchrist, FL, Eastern Hamilton, FL, Coastal Nassau, FL, Coastal Duval, FL, Eastern Clay, FL, Eastern Alachua, FL, Eastern Putnam, FL, Western Hamilton, FL, Trout River, FL, Western Clay, FL, Northeast Coastal St. Johns, FL, Western Alachua, FL, Western Putnam, FL, Northern Columbia, FL, South Central Duval, FL, Southeast Coastal St. Johns, FL, Southeastern Columbia, FL, Western Duval, FL, Northern Inland St. Johns, FL, Southwestern Columbia, FL, Southern Inland St. Johns, FL, Western St. Johns, FL, Inland Glynn, GA, Coastal Glynn, GA, Echols, GA, Clinch, GA, Inland Camden, GA, Coastal Camden, GA, Northeastern Charlton, GA, Southern Ware, GA, Western Charlton, GA 7:00 PM

Fernandina Beach, Florida

Last updated: 5:21 PM CDT  ·  Refresh
34°C
Feels like 41°
Mostly Cloudy
▲ 36°  /  ▼ 27°
Wind
7 mph SW
Humidity
58%
Dew Point
25°
Pressure
29.75 inHg
Visibility
8 mi
UV Index
3.2
Cloud Cover
80%
Sunrise
6:41 AM
Sunset
8:22 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Fernandina Beach is currently mostly cloudy at 34°C. Precipitation is likely — peak probability 88% around 9 PM. Atmospheric instability is elevated (CAPE up to 3394 J/kg) — isolated convective development possible. Sunrise: 6:41AM · Sunset: 8:22PM.

Alerts

Severe Thunderstorm Warning
Duval County, FL, Nassau County, FL
Expires 5:45 PM
Severe Thunderstorm Watch
Expires 9:00 PM
Excessive Heat Watch
Expires 7:00 PM
Extreme Heat Warning
Suwannee, FL, Baker, FL, Inland Nassau, FL, Union, FL, Bradford, FL, Gilchrist, FL, Eastern Hamilton, FL, Coastal Nassau, FL, Coastal Duval, FL, Eastern Clay, FL, Eastern Alachua, FL, Eastern Putnam, FL, Western Hamilton, FL, Trout River, FL, Western Clay, FL, Northeast Coastal St. Johns, FL, Western Alachua, FL, Western Putnam, FL, Northern Columbia, FL, South Central Duval, FL, Southeast Coastal St. Johns, FL, Southeastern Columbia, FL, Western Duval, FL, Northern Inland St. Johns, FL, Southwestern Columbia, FL, Southern Inland St. Johns, FL, Western St. Johns, FL, Inland Glynn, GA, Coastal Glynn, GA, Echols, GA, Clinch, GA, Inland Camden, GA, Coastal Camden, GA, Northeastern Charlton, GA, Southern Ware, GA, Western Charlton, GA
Expires 7:00 PM
60 AQI · Moderate Dominant: PM2.5 Air Quality
Hourly Forecast · Next 24 Hours
Now
34°
84%
7 PM
32°
84%
8 PM
31°
70%
9 PM
30°
87%
10 PM
28°
55%
11 PM
28°
43%
12 AM
27°
45%
1 AM
27°
57%
2 AM
27°
42%
3 AM
27°
46%
4 AM
27°
43%
5 AM
27°
29%
6 AM
27°
29%
7 AM
27°
18%
8 AM
27°
30%
9 AM
28°
36%
10 AM
30°
44%
11 AM
31°
59%
12 PM
32°
59%
1 PM
33°
59%
2 PM
34°
60%
3 PM
33°
63%
4 PM
32°
63%
5 PM
31°
63%
7-Day Forecast
Tonight
36° 27°
Mostly Cloudy with a 87% chance of rain.
Thu
37° 27°
Partly Cloudy with a 70% chance of rain.
Fri
36° 26°
Mostly Clear with a 74% chance of rain.
Sat
34° 26°
Heavy Rain, 85% chance.
Sun
34° 26°
Rain, 85% chance.
Mon
34° 25°
Rain, 82% chance.
Tue
35° 25°
Drizzle, 63% chance.
TimeTempConditionsPrecipWindHumidity
Now 34° Mostly Cloudy 84% 7 mph SW 58%
7 PM 32° Mostly Cloudy 84% 7 mph SW 64%
8 PM 31° Mostly Cloudy 70% 8 mph SW 68%
9 PM 30° Heavy Rain 87% 8 mph SW 75%
10 PM 28° Overcast 55% 8 mph SW 83%
11 PM 28° Rain 43% 8 mph SW 88%
12 AM 27° Overcast 45% 7 mph WSW 86%
1 AM 27° Overcast 57% 8 mph WSW 85%
2 AM 27° Rain 42% 8 mph WSW 84%
3 AM 27° Overcast 46% 8 mph WSW 84%
4 AM 27° Mostly Cloudy 43% 9 mph WSW 84%
5 AM 27° Mostly Cloudy 29% 9 mph WSW 84%
6 AM 27° Rain 29% 8 mph WSW 82%
7 AM 27° Partly Cloudy 18% 8 mph WSW 81%
8 AM 27° Partly Cloudy 30% 8 mph WSW 79%
9 AM 28° Partly Cloudy 36% 8 mph WSW 75%
10 AM 30° Mostly Clear 44% 8 mph WSW 71%
11 AM 31° Mostly Clear 59% 8 mph SW 67%
12 PM 32° Mostly Clear 59% 8 mph SW 64%
1 PM 33° Clear 59% 8 mph WSW 60%
2 PM 34° Mostly Clear 60% 8 mph WSW 60%
3 PM 33° Mostly Clear 63% 8 mph SW 66%
4 PM 32° Partly Cloudy 63% 9 mph SW 72%
5 PM 31° Partly Cloudy 63% 9 mph SW 76%
15-Day Forecast
Today
7/29
Mostly Cloudy
87%
27°
36°
Thu
7/30
Partly Cloudy
70%
27°
37°
Fri
7/31
Mostly Clear
74%
26°
36°
Sat
8/1
Heavy Rain
85%
26°
34°
Sun
8/2
Rain
85%
26°
34°
Mon
8/3
Rain
82%
25°
34°
Tue
8/4
Drizzle
63%
25°
35°
Wed
8/5
Drizzle
60%
25°
34°
Thu
8/6
Drizzle
60%
25°
34°
Fri
8/7
Drizzle
60%
26°
36°
Sat
8/8
Drizzle
60%
26°
36°
Sun
8/9
Drizzle
60%
26°
37°
Mon
8/10
Rain
90%
26°
37°
Tue
8/11
Drizzle
60%
26°
37°
Wed
8/12
Drizzle
60%
26°
37°
60
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
60 AQI 14.0 µg/m³
O3
Ground-level ozone
39 AQI 43 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Thu 60 Moderate 39 60
Fri 58 Moderate 38 58
Sat 58 Moderate 46 58
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 Wed Jul 29, 21:00'Z' · F0 · 130 (13 km CONUS/NA)
Hodograph · kt
10 20 30 40 SM
0–1 1–3 3–6 6–9 km
Instability
SBCAPE3967 J/kg
MLCAPE2408 J/kg
MUCAPE3967 J/kg
SBCIN0 J/kg
MLCIN0 J/kg
Lifted Index-7.9
Kinematics
0–6 km Shear19 kt
0–1 km Shear13 kt
Eff. Shear22 kt
0–1 km SRH-1
0–3 km SRH-7
Eff. SRH-7
Storm Motion250° @ 24 kt
0–1 km EHI-0.0
Composite Parameters
Sig. Tornado0.0
STP (eff)0.0
Supercell0.0
K-Index30.2
Thermo & Levels
PWAT2.26 in
0–3 km LR7.1 °C/km
700–500 LR6.1 °C/km
Total Totals48.9
LCL886 hPa
LFC1007 hPa
EL135 hPa
Freezing Lvl15,226 ft