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 Extreme 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: 3:02 PM CDT  ·  Refresh
34°C
Feels like 42°
Partly Cloudy
▲ 36°  /  ▼ 27°
Wind
6 mph WSW
Humidity
55%
Dew Point
23°
Pressure
29.96 inHg
Visibility
10 mi
UV Index
8.0
Cloud Cover
37%
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 35°C. Dry conditions are expected through the next 24 hours. Atmospheric instability is elevated (CAPE up to 2962 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
Extreme 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
34°
8%
5 PM
36°
8%
6 PM
34°
8%
7 PM
33°
18%
8 PM
31°
22%
9 PM
31°
22%
10 PM
29°
21%
11 PM
29°
21%
12 AM
29°
8%
1 AM
28°
8%
2 AM
28°
5%
3 AM
28°
5%
4 AM
28°
5%
5 AM
28°
5%
6 AM
28°
5%
7 AM
27°
3%
8 AM
27°
3%
9 AM
28°
9%
10 AM
31°
9%
11 AM
32°
9%
12 PM
33°
21%
1 PM
34°
26%
2 PM
34°
25%
3 PM
36°
39%
7-Day Forecast
Today
36° 27°
Partly Cloudy with a 21% chance of rain.
Tue
38° 27°
Partly Cloudy with a 65% chance of rain.
Wed
38° 27°
Mostly Clear with a 28% chance of rain.
Thu
37° 27°
Rain, 64% chance.
Fri
37° 25°
Clear with a 27% chance of rain.
Sat
35° 26°
Rain, 81% chance.
Sun
35° 24°
Drizzle, 60% chance.
TimeTempConditionsPrecipWindHumidity
Now 34° Partly Cloudy 8% 6 mph WSW 55%
5 PM 36° Partly Cloudy 8% 6 mph SW 51%
6 PM 34° Partly Cloudy 8% 5 mph S 54%
7 PM 33° Mostly Clear 18% 6 mph S 60%
8 PM 31° Mostly Clear 22% 6 mph S 69%
9 PM 31° Mostly Clear 22% 6 mph SSW 72%
10 PM 29° Partly Cloudy 21% 7 mph SW 74%
11 PM 29° Partly Cloudy 21% 9 mph SW 77%
12 AM 29° Partly Cloudy 8% 9 mph SW 77%
1 AM 28° Mostly Clear 8% 9 mph WSW 78%
2 AM 28° Mostly Clear 5% 9 mph WSW 79%
3 AM 28° Mostly Clear 5% 9 mph WSW 80%
4 AM 28° Mostly Clear 5% 9 mph WSW 81%
5 AM 28° Mostly Clear 5% 9 mph WSW 81%
6 AM 28° Mostly Clear 5% 9 mph W 81%
7 AM 27° Mostly Clear 3% 8 mph WSW 82%
8 AM 27° Mostly Clear 3% 8 mph WSW 82%
9 AM 28° Mostly Clear 9% 8 mph W 77%
10 AM 31° Mostly Clear 9% 8 mph W 72%
11 AM 32° Clear 9% 7 mph W 68%
12 PM 33° Clear 21% 7 mph W 64%
1 PM 34° Mostly Clear 26% 6 mph W 61%
2 PM 34° Mostly Clear 25% 6 mph WSW 57%
3 PM 36° Partly Cloudy 39% 5 mph WSW 58%
15-Day Forecast
Today
8/17
Partly Cloudy
21%
27°
36°
Tue
8/18
Partly Cloudy
65%
27°
38°
Wed
8/19
Mostly Clear
28%
27°
38°
Thu
8/20
Rain
64%
27°
37°
Fri
8/21
Clear
27%
25°
37°
Sat
8/22
Rain
81%
26°
35°
Sun
8/23
Drizzle
60%
24°
35°
Mon
8/24
Drizzle
60%
25°
35°
Tue
8/25
Drizzle
60%
25°
36°
Wed
8/26
Drizzle
60%
26°
35°
Thu
8/27
Drizzle
60%
26°
35°
Fri
8/28
Drizzle
60%
25°
34°
Sat
8/29
Drizzle
60%
24°
34°
Sun
8/30
Drizzle
60%
24°
33°
Mon
8/31
Rain
90%
24°
33°
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, 18:00'Z' · F0 · 130 (13 km CONUS/NA)
Hodograph · kt
10 20 30 40 SM
0–1 1–3 3–6 6–9 km
Instability
SBCAPE2592 J/kg
MLCAPE2507 J/kg
MUCAPE3087 J/kg
SBCIN-1 J/kg
MLCIN-16 J/kg
Lifted Index-5.6
Kinematics
0–6 km Shear5 kt
0–1 km Shear8 kt
Eff. Shear8 kt
0–1 km SRH-7
0–3 km SRH-10
Eff. SRH-10
Storm Motion193° @ 10 kt
0–1 km EHI-0.1
Composite Parameters
Sig. Tornado0.0
STP (eff)0.0
Supercell0.0
K-Index34.4
Thermo & Levels
PWAT2.45 in
0–3 km LR7.6 °C/km
700–500 LR5.7 °C/km
Total Totals46.2
LCL857 hPa
LFC846 hPa
EL136 hPa
Freezing Lvl16,421 ft