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

Jacksonville, Florida

Last updated: 12:39 PM CDT  ·  Refresh
33°C
Feels like 41°
Partly Cloudy
▲ 37°  /  ▼ 26°
Wind
9 mph W
Humidity
60%
Dew Point
25°
Pressure
30.00 inHg
Visibility
10 mi
UV Index
9.1
Cloud Cover
44%
Sunrise
6:54 AM
Sunset
8:06 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Jacksonville is currently partly cloudy at 34°C. Dry conditions are expected through the next 24 hours. Atmospheric instability is elevated (CAPE up to 2650 J/kg) — isolated convective development possible. Sunrise: 6:54AM · Sunset: 8:06PM.

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
54 AQI · Moderate Dominant: PM2.5 Air Quality
Hourly Forecast · Next 24 Hours
Now
33°
22%
2 PM
34°
34%
3 PM
35°
16%
4 PM
35°
16%
5 PM
36°
19%
6 PM
35°
19%
7 PM
34°
19%
8 PM
33°
20%
9 PM
30°
20%
10 PM
29°
20%
11 PM
28°
13%
12 AM
28°
10%
1 AM
28°
5%
2 AM
28°
5%
3 AM
28°
5%
4 AM
27°
5%
5 AM
26°
3%
6 AM
26°
3%
7 AM
26°
3%
8 AM
27°
18%
9 AM
29°
21%
10 AM
31°
30%
11 AM
32°
31%
12 PM
33°
31%
7-Day Forecast
Today
37° 26°
Partly Cloudy with a 22% chance of rain.
Tue
38° 26°
Partly Cloudy with a 61% chance of rain.
Wed
39° 23°
Partly Cloudy with a 59% chance of rain.
Thu
36° 23°
Partly Cloudy with a 73% chance of rain.
Fri
37° 24°
Drizzle, 51% chance.
Sat
33° 24°
Rain, 82% chance.
Sun
33° 22°
Rain, 63% chance.
TimeTempConditionsPrecipWindHumidity
Now 33° Partly Cloudy 22% 9 mph W 60%
2 PM 34° Partly Cloudy 34% 10 mph W 54%
3 PM 35° Partly Cloudy 16% 8 mph W 48%
4 PM 35° Mostly Cloudy 16% 10 mph W 43%
5 PM 36° Partly Cloudy 19% 9 mph W 44%
6 PM 35° Mostly Cloudy 19% 8 mph W 49%
7 PM 34° Mostly Cloudy 19% 7 mph WSW 54%
8 PM 33° Partly Cloudy 20% 6 mph SW 60%
9 PM 30° Mostly Cloudy 20% 7 mph SW 66%
10 PM 29° Overcast 20% 7 mph SW 72%
11 PM 28° Overcast 13% 7 mph WSW 75%
12 AM 28° Mostly Cloudy 10% 7 mph WSW 75%
1 AM 28° Partly Cloudy 5% 7 mph WSW 76%
2 AM 28° Partly Cloudy 5% 8 mph WSW 77%
3 AM 28° Partly Cloudy 5% 7 mph WSW 78%
4 AM 27° Partly Cloudy 5% 7 mph W 79%
5 AM 26° Mostly Clear 3% 7 mph W 80%
6 AM 26° Partly Cloudy 3% 7 mph W 80%
7 AM 26° Partly Cloudy 3% 7 mph WSW 81%
8 AM 27° Partly Cloudy 18% 7 mph W 77%
9 AM 29° Mostly Clear 21% 7 mph W 70%
10 AM 31° Mostly Clear 30% 7 mph W 64%
11 AM 32° Mostly Clear 31% 7 mph W 59%
12 PM 33° Mostly Clear 31% 7 mph W 55%
15-Day Forecast
Today
8/17
Partly Cloudy
22%
26°
37°
Tue
8/18
Partly Cloudy
61%
26°
38°
Wed
8/19
Partly Cloudy
59%
23°
39°
Thu
8/20
Partly Cloudy
73%
23°
36°
Fri
8/21
Drizzle
51%
24°
37°
Sat
8/22
Rain
82%
24°
33°
Sun
8/23
Rain
63%
22°
33°
Mon
8/24
Rain
69%
22°
35°
Tue
8/25
Drizzle
44%
23°
36°
Wed
8/26
Drizzle
60%
24°
36°
Thu
8/27
Drizzle
60%
24°
35°
Fri
8/28
Drizzle
60%
25°
33°
Sat
8/29
Drizzle
60%
24°
33°
Sun
8/30
Drizzle
60%
24°
33°
Mon
8/31
Drizzle
60%
24°
33°
54
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
54 AQI 10.8 µg/m³
O3
Ground-level ozone
29 AQI 32 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Tue 54 Moderate 29 54
Wed 54 Moderate 30 54
Thu 52 Moderate 37 52
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
SBCAPE3545 J/kg
MLCAPE1517 J/kg
MUCAPE3545 J/kg
SBCIN-77 J/kg
MLCIN-32 J/kg
Lifted Index-6.7
Kinematics
0–6 km Shear7 kt
0–1 km Shear3 kt
Eff. Shear13 kt
0–1 km SRH-8
0–3 km SRH-11
Eff. SRH-11
Storm Motion220° @ 14 kt
0–1 km EHI-0.2
Composite Parameters
Sig. Tornado0.0
STP (eff)0.0
Supercell0.0
K-Index35.4
Thermo & Levels
PWAT2.28 in
0–3 km LR7.5 °C/km
700–500 LR5.4 °C/km
Total Totals46.6
LCL893 hPa
LFC854 hPa
EL124 hPa
Freezing Lvl16,696 ft