Areal Flood Watch 2:00 AM Coastal Flood Advisory — Eastern Clay, FL, Eastern Putnam, FL, South Central Duval, FL, Western St. Johns, FL 1:00 PM

Saint Augustine Beach, Florida

Last updated: 10:59 PM CDT  ·  Refresh
25°C
Feels like 25°
Overcast
▲ 26°  /  ▼ 24°
Wind
14 mph E
Humidity
82%
Dew Point
22°
Pressure
29.96 inHg
Visibility
10 mi
UV Index
0.0
Cloud Cover
96%
Sunrise
7:22 AM
Sunset
7:02 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Saint Augustine Beach is currently overcast at 25°C. Precipitation is likely — peak probability 90% around 5 AM. Atmospheric instability is elevated (CAPE up to 1893 J/kg) — isolated convective development possible. Sunrise: 7:22AM · Sunset: 7:02PM.

Alerts

Areal Flood Watch
Expires 2:00 AM
Coastal Flood Advisory
Eastern Clay, FL, Eastern Putnam, FL, South Central Duval, FL, Western St. Johns, FL
Expires 1:00 PM
35 AQI · Good Dominant: O3 Air Quality
Hourly Forecast · Next 24 Hours
Now
25°
68%
12 AM
25°
47%
1 AM
25°
43%
2 AM
26°
50%
3 AM
26°
87%
4 AM
26°
86%
5 AM
26°
90%
6 AM
26°
76%
7 AM
26°
76%
8 AM
26°
85%
9 AM
26°
85%
10 AM
27°
77%
11 AM
27°
85%
12 PM
27°
86%
1 PM
26°
78%
2 PM
26°
78%
3 PM
27°
57%
4 PM
27°
57%
5 PM
27°
58%
6 PM
27°
63%
7 PM
27°
63%
8 PM
27°
61%
9 PM
26°
61%
10 PM
26°
62%
7-Day Forecast
Tonight
26° 24°
Overcast with a 68% chance of rain.
Fri
28° 24°
Rain, 90% chance.
Sat
31° 26°
Partly Cloudy with a 74% chance of rain.
Sun
30° 23°
Drizzle, 54% chance.
Mon
29° 21°
Clear.
Tue
28° 21°
Clear.
Wed
28° 22°
Clear.
TimeTempConditionsPrecipWindHumidity
Now 25° Overcast 68% 14 mph E 82%
12 AM 25° Overcast 47% 16 mph E 79%
1 AM 25° Overcast 43% 16 mph E 79%
2 AM 26° Overcast 50% 14 mph E 81%
3 AM 26° Rain 87% 15 mph E 82%
4 AM 26° Overcast 86% 14 mph E 84%
5 AM 26° Rain 90% 14 mph E 84%
6 AM 26° Rain 76% 15 mph ENE 82%
7 AM 26° Thunderstorm 76% 17 mph ENE 81%
8 AM 26° Thunderstorm 85% 18 mph ENE 81%
9 AM 26° Thunderstorm 85% 15 mph ENE 80%
10 AM 27° Thunderstorm 77% 16 mph ENE 80%
11 AM 27° Rain 85% 16 mph ENE 82%
12 PM 27° Rain 86% 16 mph ENE 84%
1 PM 26° Rain 78% 15 mph ENE 85%
2 PM 26° Mostly Cloudy 78% 13 mph ENE 84%
3 PM 27° Mostly Cloudy 57% 12 mph ENE 84%
4 PM 27° Mostly Cloudy 57% 11 mph ENE 82%
5 PM 27° Mostly Cloudy 58% 12 mph E 84%
6 PM 27° Overcast 63% 12 mph E 86%
7 PM 27° Rain 63% 12 mph E 87%
8 PM 27° Rain 61% 12 mph E 88%
9 PM 26° Rain 61% 12 mph E 88%
10 PM 26° Rain 62% 12 mph ESE 89%
15-Day Forecast
Today
10/8
Overcast
68%
24°
26°
Fri
10/9
Rain
90%
24°
28°
Sat
10/10
Partly Cloudy
74%
26°
31°
Sun
10/11
Drizzle
54%
23°
30°
Mon
10/12
Clear
15%
21°
29°
Tue
10/13
Clear
8%
21°
28°
Wed
10/14
Clear
17%
22°
28°
Thu
10/15
Rain
27%
22°
28°
Fri
10/16
Drizzle
69%
23°
28°
Sat
10/17
Rain
68%
23°
28°
Sun
10/18
Rain
64%
22°
27°
Mon
10/19
Drizzle
60%
22°
27°
Tue
10/20
Rain
90%
22°
24°
Wed
10/21
Drizzle
60%
22°
26°
Thu
10/22
Rain
90%
21°
26°
35
Good
U.S. Air Quality Index · Dominant: O3
50 100 150 200

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

Pollutant Breakdown · Today
PM2.5
Fine particulate matter
12 AQI 2.3 µg/m³
O3
Ground-level ozone
Dominant
35 AQI 38 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Today 35 Good 35 12
Sat 39 Good 39 13
Sun 19 Good 19 13
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 Fri Oct 9, 02:00'Z' · F0 · 130 (13 km CONUS/NA)
Hodograph · kt
10 20 30 40 SM
0–1 1–3 3–6 6–9 km
Instability
SBCAPE321 J/kg
MLCAPE371 J/kg
MUCAPE593 J/kg
SBCIN-76 J/kg
MLCIN-54 J/kg
Lifted Index-1.8
Kinematics
0–6 km Shear31 kt
0–1 km Shear9 kt
Eff. Shear28 kt
0–1 km SRH-17
0–3 km SRH32
Eff. SRH32
Storm Motion312° @ 7 kt
0–1 km EHI-0.0
Composite Parameters
Sig. Tornado0.0
STP (eff)0.0
Supercell0.3
K-Index33.5
Thermo & Levels
PWAT2.26 in
0–3 km LR5.6 °C/km
700–500 LR5.0 °C/km
Total Totals41.3
LCL971 hPa
LFC782 hPa
EL375 hPa
Freezing Lvl15,499 ft