Heat Advisory — Sumter, FL, Pinellas, FL, Polk, FL, Hardee, FL, Highlands, FL, DeSoto, FL, Coastal Levy, FL, Coastal Citrus, FL, Coastal Hernando, FL, Coastal Pasco, FL, Coastal Hillsborough, FL, Coastal Manatee, FL, Coastal Sarasota, FL, Coastal Charlotte, FL, Coastal Lee, FL, Inland Levy, FL, Inland Citrus, FL, Inland Hernando, FL, Inland Pasco, FL, Inland Hillsborough, FL, Inland Manatee, FL, Inland Sarasota, FL, Inland Charlotte, FL, Inland Lee, FL 6:00 PM

Polk County, Florida, United States

Last updated: 11:26 AM CDT  ·  Refresh
33°C
Feels like 39°
Mostly Clear
▲ 37°  /  ▼ 24°
Wind
11 mph WNW
Humidity
58%
Dew Point
24°
Pressure
29.91 inHg
Visibility
10 mi
UV Index
9.5
Cloud Cover
16%
Sunrise
6:58 AM
Sunset
8:02 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Polk County is currently mostly clear at 33°C. Precipitation is likely — peak probability 65% around 12 PM. Atmospheric instability is elevated (CAPE up to 3095 J/kg) — isolated convective development possible. Sunrise: 6:58AM · Sunset: 8:02PM.

Alerts

Heat Advisory
Sumter, FL, Pinellas, FL, Polk, FL, Hardee, FL, Highlands, FL, DeSoto, FL, Coastal Levy, FL, Coastal Citrus, FL, Coastal Hernando, FL, Coastal Pasco, FL, Coastal Hillsborough, FL, Coastal Manatee, FL, Coastal Sarasota, FL, Coastal Charlotte, FL, Coastal Lee, FL, Inland Levy, FL, Inland Citrus, FL, Inland Hernando, FL, Inland Pasco, FL, Inland Hillsborough, FL, Inland Manatee, FL, Inland Sarasota, FL, Inland Charlotte, FL, Inland Lee, FL
Expires 6:00 PM
49 AQI · Good Dominant: PM2.5 Air Quality
Hourly Forecast · Next 24 Hours
Now
33°
3%
1 PM
34°
21%
2 PM
36°
14%
3 PM
36°
16%
4 PM
36°
17%
5 PM
35°
17%
6 PM
35°
18%
7 PM
33°
15%
8 PM
32°
7%
9 PM
31°
9%
10 PM
28°
10%
11 PM
28°
13%
12 AM
27°
13%
1 AM
27°
8%
2 AM
26°
8%
3 AM
26°
17%
4 AM
26°
20%
5 AM
26°
33%
6 AM
25°
37%
7 AM
25°
47%
8 AM
26°
47%
9 AM
27°
47%
10 AM
30°
52%
11 AM
31°
59%
7-Day Forecast
Today
37° 24°
Mostly Clear.
Wed
38° 25°
Mostly Cloudy with a 64% chance of rain.
Thu
37° 25°
Mostly Cloudy with a 45% chance of rain.
Fri
34° 24°
Rain, 70% chance.
Sat
34° 24°
Drizzle, 51% chance.
Sun
35° 23°
Drizzle, 51% chance.
Mon
35° 23°
Rain, 55% chance.
TimeTempConditionsPrecipWindHumidity
Now 33° Mostly Clear 3% 11 mph WNW 58%
1 PM 34° Mostly Clear 21% 12 mph W 52%
2 PM 36° Mostly Clear 14% 13 mph W 50%
3 PM 36° Partly Cloudy 16% 13 mph W 50%
4 PM 36° Mostly Clear 17% 13 mph W 51%
5 PM 35° Mostly Clear 17% 12 mph W 53%
6 PM 35° Mostly Clear 18% 11 mph W 57%
7 PM 33° Clear 15% 9 mph W 62%
8 PM 32° Clear 7% 7 mph W 67%
9 PM 31° Mostly Clear 9% 5 mph W 71%
10 PM 28° Mostly Clear 10% 4 mph W 75%
11 PM 28° Partly Cloudy 13% 4 mph W 79%
12 AM 27° Mostly Clear 13% 4 mph WSW 82%
1 AM 27° Mostly Clear 8% 5 mph WSW 85%
2 AM 26° Mostly Clear 8% 5 mph WSW 87%
3 AM 26° Mostly Clear 17% 5 mph WSW 88%
4 AM 26° Mostly Clear 20% 6 mph W 88%
5 AM 26° Partly Cloudy 33% 6 mph W 89%
6 AM 25° Partly Cloudy 37% 6 mph W 88%
7 AM 25° Partly Cloudy 47% 6 mph W 87%
8 AM 26° Partly Cloudy 47% 6 mph W 85%
9 AM 27° Partly Cloudy 47% 6 mph W 81%
10 AM 30° Partly Cloudy 52% 7 mph WNW 77%
11 AM 31° Partly Cloudy 59% 7 mph WNW 72%
15-Day Forecast
Today
8/18
Mostly Clear
18%
24°
37°
Wed
8/19
Mostly Cloudy
64%
25°
38°
Thu
8/20
Mostly Cloudy
45%
25°
37°
Fri
8/21
Rain
70%
24°
34°
Sat
8/22
Drizzle
51%
24°
34°
Sun
8/23
Drizzle
51%
23°
35°
Mon
8/24
Rain
55%
23°
35°
Tue
8/25
Rain
69%
22°
36°
Wed
8/26
Drizzle
44%
22°
35°
Thu
8/27
Rain
68%
24°
34°
Fri
8/28
Drizzle
60%
23°
34°
Sat
8/29
Drizzle
60%
25°
34°
Sun
8/30
Drizzle
60%
25°
34°
Mon
8/31
Drizzle
60%
25°
34°
Tue
9/1
Drizzle
60%
24°
34°
49
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
49 AQI 9.0 µg/m³
O3
Ground-level ozone
31 AQI 34 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Wed 49 Good 31 49
Thu 51 Moderate 41 51
Fri 53 Moderate 43 53
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 18, 15:00'Z' · F0 · 130 (13 km CONUS/NA)
Hodograph · kt
10 20 30 40 SM
0–1 1–3 3–6 6–9 km
Instability
SBCAPE3625 J/kg
MLCAPE2133 J/kg
MUCAPE3625 J/kg
SBCIN0 J/kg
MLCIN-37 J/kg
Lifted Index-7.8
Kinematics
0–6 km Shear13 kt
0–1 km Shear4 kt
Eff. Shear16 kt
0–1 km SRH-13
0–3 km SRH-47
Eff. SRH-47
Storm Motion226° @ 17 kt
0–1 km EHI-0.3
Composite Parameters
Sig. Tornado0.0
STP (eff)0.0
Supercell0.0
K-Index18.0
Thermo & Levels
PWAT1.59 in
0–3 km LR7.4 °C/km
700–500 LR6.0 °C/km
Total Totals42.6
LCL888 hPa
LFC1013 hPa
EL140 hPa
Freezing Lvl15,919 ft