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, Echols, GA 7:00 PM Excessive Heat Warning — 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, Echols, GA 7:00 PM

Fernandina Beach, Florida

Last updated: 12:45 PM CDT  ·  Refresh
33°C
Feels like 41°
Partly Cloudy
▲ 37°  /  ▼ 28°
Wind
7 mph W
Humidity
61%
Dew Point
25°
Pressure
29.99 inHg
Visibility
10 mi
UV Index
9.2
Cloud Cover
38%
Sunrise
6:53 AM
Sunset
8:05 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Fernandina Beach is currently partly cloudy at 34°C. Dry conditions are expected through the next 24 hours. Atmospheric instability is elevated (CAPE up to 2900 J/kg) — isolated convective development possible. Sunrise: 6:53AM · Sunset: 8:05PM.

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, Echols, GA
Expires 7:00 PM
Excessive Heat Warning
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, Echols, GA
Expires 7:00 PM
55 AQI · Moderate Dominant: PM2.5 Air Quality
Hourly Forecast · Next 24 Hours
Now
33°
3%
2 PM
35°
14%
3 PM
36°
16%
4 PM
35°
16%
5 PM
34°
20%
6 PM
33°
32%
7 PM
32°
19%
8 PM
32°
20%
9 PM
30°
17%
10 PM
29°
9%
11 PM
29°
10%
12 AM
29°
10%
1 AM
29°
5%
2 AM
28°
5%
3 AM
28°
10%
4 AM
28°
10%
5 AM
28°
8%
6 AM
28°
8%
7 AM
28°
9%
8 AM
28°
18%
9 AM
31°
19%
10 AM
32°
19%
11 AM
33°
29%
12 PM
34°
34%
7-Day Forecast
Today
37° 28°
Partly Cloudy.
Tue
38° 27°
Partly Cloudy with a 61% chance of rain.
Wed
38° 26°
Partly Cloudy with a 28% chance of rain.
Thu
36° 26°
Partly Cloudy with a 57% chance of rain.
Fri
36° 26°
Clear with a 27% chance of rain.
Sat
34° 26°
Rain, 78% chance.
Sun
34° 24°
Rain, 90% chance.
TimeTempConditionsPrecipWindHumidity
Now 33° Partly Cloudy 3% 7 mph W 61%
2 PM 35° Mostly Clear 14% 5 mph WSW 56%
3 PM 36° Partly Cloudy 16% 4 mph SW 54%
4 PM 35° Partly Cloudy 16% 6 mph SSW 52%
5 PM 34° Mostly Cloudy 20% 6 mph SSW 54%
6 PM 33° Mostly Cloudy 32% 5 mph SSW 58%
7 PM 32° Partly Cloudy 19% 5 mph S 63%
8 PM 32° Partly Cloudy 20% 5 mph SSW 67%
9 PM 30° Partly Cloudy 17% 7 mph SSW 71%
10 PM 29° Partly Cloudy 9% 8 mph SW 73%
11 PM 29° Partly Cloudy 10% 9 mph SW 75%
12 AM 29° Partly Cloudy 10% 9 mph WSW 76%
1 AM 29° Mostly Clear 5% 9 mph WSW 77%
2 AM 28° Mostly Clear 5% 10 mph WSW 78%
3 AM 28° Mostly Clear 10% 9 mph WSW 79%
4 AM 28° Mostly Clear 10% 9 mph W 80%
5 AM 28° Mostly Clear 8% 9 mph W 80%
6 AM 28° Mostly Clear 8% 9 mph W 80%
7 AM 28° Partly Cloudy 9% 9 mph W 80%
8 AM 28° Mostly Clear 18% 9 mph W 76%
9 AM 31° Mostly Clear 19% 8 mph W 71%
10 AM 32° Mostly Clear 19% 8 mph W 66%
11 AM 33° Mostly Clear 29% 8 mph W 62%
12 PM 34° Mostly Clear 34% 7 mph W 59%
15-Day Forecast
Today
8/17
Partly Cloudy
19%
28°
37°
Tue
8/18
Partly Cloudy
61%
27°
38°
Wed
8/19
Partly Cloudy
28%
26°
38°
Thu
8/20
Partly Cloudy
57%
26°
36°
Fri
8/21
Clear
27%
26°
36°
Sat
8/22
Rain
78%
26°
34°
Sun
8/23
Rain
90%
24°
34°
Mon
8/24
Rain
69%
24°
34°
Tue
8/25
Drizzle
44%
26°
36°
Wed
8/26
Drizzle
60%
26°
36°
Thu
8/27
Drizzle
60%
26°
36°
Fri
8/28
Drizzle
60%
25°
34°
Sat
8/29
Drizzle
60%
25°
34°
Sun
8/30
Drizzle
60%
24°
33°
Mon
8/31
Drizzle
60%
24°
34°
55
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
55 AQI 11.0 µg/m³
O3
Ground-level ozone
36 AQI 40 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Tue 55 Moderate 36 55
Wed 55 Moderate 35 55
Thu 54 Moderate 44 54
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 Mon Aug 17, 16:00'Z' · F0 · 130 (13 km CONUS/NA)
Hodograph · kt
10 20 30 40 SM
0–1 1–3 3–6 6–9 km
Instability
SBCAPE3593 J/kg
MLCAPE1710 J/kg
MUCAPE3593 J/kg
SBCIN-53 J/kg
MLCIN-37 J/kg
Lifted Index-6.7
Kinematics
0–6 km Shear5 kt
0–1 km Shear6 kt
Eff. Shear10 kt
0–1 km SRH-14
0–3 km SRH-13
Eff. SRH-13
Storm Motion223° @ 14 kt
0–1 km EHI-0.3
Composite Parameters
Sig. Tornado0.0
STP (eff)0.0
Supercell0.0
K-Index33.1
Thermo & Levels
PWAT2.25 in
0–3 km LR7.4 °C/km
700–500 LR5.5 °C/km
Total Totals45.4
LCL895 hPa
LFC857 hPa
EL124 hPa
Freezing Lvl16,611 ft