Heat Advisory — Suwannee, FL, Baker, FL, Inland Nassau, FL, Union, FL, Bradford, FL, Gilchrist, FL, Inland Flagler, FL, Eastern Hamilton, FL, Coastal Nassau, FL, Coastal Duval, FL, Eastern Clay, FL, Eastern Alachua, FL, Eastern Putnam, FL, Coastal Flagler, FL, Eastern Marion, FL, Western Hamilton, FL, Trout River, FL, Western Clay, FL, Northeast Coastal St. Johns, FL, Western Alachua, FL, Western Putnam, FL, Central Marion, FL, Northern Columbia, FL, South Central Duval, FL, Southeast Coastal St. Johns, FL, Western Marion, 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, Inland Camden, GA, Coastal Camden, GA 6:00 PM

Fernandina Beach, Florida

Last updated: 5:16 AM CDT  ·  Refresh
26°C
Feels like 30°
Mostly Clear
▲ 36°  /  ▼ 27°
Wind
5 mph SW
Humidity
87%
Dew Point
24°
Pressure
30.10 inHg
Visibility
9 mi
UV Index
0.0
Cloud Cover
21%
Sunrise
6:49 AM
Sunset
8:11 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Fernandina Beach is currently mostly clear at 26°C. Precipitation is likely — peak probability 51% around 5 PM. Atmospheric instability is elevated (CAPE up to 2357 J/kg) — isolated convective development possible. Sunrise: 6:49AM · Sunset: 8:11PM.

Alerts

Heat Advisory
Suwannee, FL, Baker, FL, Inland Nassau, FL, Union, FL, Bradford, FL, Gilchrist, FL, Inland Flagler, FL, Eastern Hamilton, FL, Coastal Nassau, FL, Coastal Duval, FL, Eastern Clay, FL, Eastern Alachua, FL, Eastern Putnam, FL, Coastal Flagler, FL, Eastern Marion, FL, Western Hamilton, FL, Trout River, FL, Western Clay, FL, Northeast Coastal St. Johns, FL, Western Alachua, FL, Western Putnam, FL, Central Marion, FL, Northern Columbia, FL, South Central Duval, FL, Southeast Coastal St. Johns, FL, Western Marion, 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, Inland Camden, GA, Coastal Camden, GA
Expires 6:00 PM
43 AQI · Good Dominant: PM2.5 Air Quality
Hourly Forecast · Next 24 Hours
Now
26°
15%
7 AM
27°
31%
8 AM
27°
31%
9 AM
29°
31%
10 AM
31°
31%
11 AM
32°
31%
12 PM
33°
31%
1 PM
33°
32%
2 PM
34°
41%
3 PM
34°
47%
4 PM
34°
50%
5 PM
34°
51%
6 PM
32°
44%
7 PM
31°
45%
8 PM
29°
45%
9 PM
29°
45%
10 PM
28°
33%
11 PM
28°
27%
12 AM
27°
27%
1 AM
27°
18%
2 AM
27°
16%
3 AM
27°
16%
4 AM
27°
16%
5 AM
27°
14%
7-Day Forecast
Today
36° 27°
Partly Cloudy with a 47% chance of rain.
Wed
37° 27°
Partly Cloudy with a 50% chance of rain.
Thu
37° 27°
Mostly Clear with a 29% chance of rain.
Fri
37° 26°
Mostly Clear with a 65% chance of rain.
Sat
36° 26°
Rain, 80% chance.
Sun
36° 26°
Rain, 63% chance.
Mon
37° 26°
Rain, 63% chance.
TimeTempConditionsPrecipWindHumidity
Now 26° Mostly Clear 15% 5 mph SW 87%
7 AM 27° Mostly Clear 31% 6 mph SW 85%
8 AM 27° Mostly Clear 31% 6 mph WSW 82%
9 AM 29° Mostly Clear 31% 6 mph WSW 75%
10 AM 31° Partly Cloudy 31% 6 mph W 68%
11 AM 32° Partly Cloudy 31% 6 mph W 62%
12 PM 33° Partly Cloudy 31% 4 mph WSW 60%
1 PM 33° Partly Cloudy 32% 5 mph SW 57%
2 PM 34° Partly Cloudy 41% 5 mph SSW 55%
3 PM 34° Mostly Clear 47% 6 mph S 55%
4 PM 34° Mostly Clear 50% 6 mph S 55%
5 PM 34° Mostly Clear 51% 7 mph SSE 57%
6 PM 32° Mostly Clear 44% 8 mph S 63%
7 PM 31° Mostly Clear 45% 9 mph S 69%
8 PM 29° Partly Cloudy 45% 9 mph S 74%
9 PM 29° Partly Cloudy 45% 6 mph S 76%
10 PM 28° Mostly Cloudy 33% 7 mph SSW 77%
11 PM 28° Mostly Cloudy 27% 8 mph SW 78%
12 AM 27° Mostly Cloudy 27% 7 mph WSW 77%
1 AM 27° Mostly Cloudy 18% 7 mph WSW 77%
2 AM 27° Mostly Cloudy 16% 8 mph WSW 76%
3 AM 27° Partly Cloudy 16% 7 mph WSW 76%
4 AM 27° Partly Cloudy 16% 7 mph W 77%
5 AM 27° Partly Cloudy 14% 7 mph W 78%
15-Day Forecast
Today
8/11
Partly Cloudy
47%
27°
36°
Wed
8/12
Partly Cloudy
50%
27°
37°
Thu
8/13
Mostly Clear
29%
27°
37°
Fri
8/14
Mostly Clear
65%
26°
37°
Sat
8/15
Rain
80%
26°
36°
Sun
8/16
Rain
63%
26°
36°
Mon
8/17
Rain
63%
26°
37°
Tue
8/18
Thunderstorm
75%
26°
38°
Wed
8/19
Rain
72%
26°
36°
Thu
8/20
Drizzle
56%
26°
34°
Fri
8/21
Drizzle
60%
26°
37°
Sat
8/22
Drizzle
60%
26°
36°
Sun
8/23
Drizzle
60%
26°
36°
Mon
8/24
Drizzle
60%
26°
36°
Tue
8/25
Drizzle
60%
26°
36°
43
Good
U.S. Air Quality Index · Dominant: PM2.5
50 100 150 200

Air quality is satisfactory and poses little or no health risk.

Pollutant Breakdown · Today
PM2.5
Fine particulate matter
Dominant
43 AQI 7.7 µg/m³
O3
Ground-level ozone
34 AQI 38 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Today 43 Good 34 43
Wed 44 Good 31 44
Thu 34 Good 26 34
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 11, 09:00'Z' · F0 · 130 (13 km CONUS/NA)
Hodograph · kt
10 20 30 40 SM
0–1 1–3 3–6 6–9 km
Instability
SBCAPE1734 J/kg
MLCAPE529 J/kg
MUCAPE1734 J/kg
SBCIN-141 J/kg
MLCIN0 J/kg
Lifted Index-5.0
Kinematics
0–6 km Shear7 kt
0–1 km Shear7 kt
Eff. Shear9 kt
0–1 km SRH35
0–3 km SRH41
Eff. SRH41
Storm Motion5° @ 11 kt
0–1 km EHI0.4
Composite Parameters
Sig. Tornado0.0
STP (eff)0.0
Supercell0.0
K-Index31.1
Thermo & Levels
PWAT1.93 in
0–3 km LR4.9 °C/km
700–500 LR6.2 °C/km
Total Totals46.0
LCL993 hPa
LFC812 hPa
EL158 hPa
Freezing Lvl15,787 ft