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: 12:29 PM CDT  ·  Refresh
34°C
Feels like 38°
Clear
▲ 37°  /  ▼ 24°
Wind
8 mph W
Humidity
51%
Dew Point
23°
Pressure
29.93 inHg
Visibility
10 mi
UV Index
9.8
Cloud Cover
8%
Sunrise
6:58 AM
Sunset
8:03 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Polk County is currently clear at 34°C. Dry conditions are expected through the next 24 hours. Atmospheric instability is elevated (CAPE up to 2979 J/kg) — isolated convective development possible. Sunrise: 6:58AM · Sunset: 8:03PM.

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
52 AQI · Moderate Dominant: PM2.5 Air Quality
Hourly Forecast · Next 24 Hours
Now
34°
3%
2 PM
36°
3%
3 PM
36°
3%
4 PM
36°
3%
5 PM
37°
3%
6 PM
35°
3%
7 PM
33°
3%
8 PM
32°
3%
9 PM
29°
3%
10 PM
28°
3%
11 PM
28°
3%
12 AM
27°
3%
1 AM
26°
3%
2 AM
26°
8%
3 AM
26°
19%
4 AM
26°
23%
5 AM
25°
23%
6 AM
25°
24%
7 AM
26°
24%
8 AM
26°
36%
9 AM
29°
28%
10 AM
31°
34%
11 AM
31°
35%
12 PM
32°
37%
7-Day Forecast
Today
37° 24°
Clear.
Tue
37° 25°
Rain, 47% chance.
Wed
36° 24°
Rain, 79% chance.
Thu
35° 23°
Partly Cloudy with a 65% chance of rain.
Fri
36° 24°
Rain, 69% chance.
Sat
34° 23°
Drizzle, 52% chance.
Sun
35° 23°
Drizzle, 52% chance.
TimeTempConditionsPrecipWindHumidity
Now 34° Clear 3% 8 mph W 51%
2 PM 36° Clear 3% 9 mph W 48%
3 PM 36° Clear 3% 10 mph W 48%
4 PM 36° Clear 3% 11 mph W 47%
5 PM 37° Clear 3% 11 mph W 49%
6 PM 35° Clear 3% 11 mph W 54%
7 PM 33° Clear 3% 9 mph W 60%
8 PM 32° Clear 3% 8 mph W 66%
9 PM 29° Clear 3% 7 mph W 72%
10 PM 28° Clear 3% 6 mph W 76%
11 PM 28° Clear 3% 6 mph W 80%
12 AM 27° Clear 3% 6 mph W 83%
1 AM 26° Mostly Clear 3% 5 mph W 86%
2 AM 26° Mostly Clear 8% 5 mph W 88%
3 AM 26° Mostly Clear 19% 5 mph W 88%
4 AM 26° Mostly Clear 23% 5 mph W 88%
5 AM 25° Mostly Clear 23% 6 mph W 89%
6 AM 25° Mostly Clear 24% 6 mph W 88%
7 AM 26° Mostly Clear 24% 6 mph W 88%
8 AM 26° Mostly Clear 36% 6 mph W 84%
9 AM 29° Mostly Clear 28% 7 mph W 78%
10 AM 31° Clear 34% 8 mph W 72%
11 AM 31° Mostly Clear 35% 8 mph W 68%
12 PM 32° Partly Cloudy 37% 8 mph W 65%
15-Day Forecast
Today
8/17
Clear
3%
24°
37°
Tue
8/18
Rain
47%
25°
37°
Wed
8/19
Rain
79%
24°
36°
Thu
8/20
Partly Cloudy
65%
23°
35°
Fri
8/21
Rain
69%
24°
36°
Sat
8/22
Drizzle
52%
23°
34°
Sun
8/23
Drizzle
52%
23°
35°
Mon
8/24
Drizzle
53%
23°
35°
Tue
8/25
Drizzle
44%
24°
35°
Wed
8/26
Drizzle
60%
26°
36°
Thu
8/27
Drizzle
60%
23°
36°
Fri
8/28
Drizzle
60%
26°
35°
Sat
8/29
Drizzle
60%
25°
35°
Sun
8/30
Drizzle
60%
25°
34°
Mon
8/31
Drizzle
60%
25°
34°
52
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
52 AQI 10.0 µg/m³
O3
Ground-level ozone
34 AQI 38 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Tue 52 Moderate 34 52
Wed 51 Moderate 36 51
Thu 49 Good 41 49
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
SBCAPE2255 J/kg
MLCAPE2074 J/kg
MUCAPE2277 J/kg
SBCIN-14 J/kg
MLCIN-22 J/kg
Lifted Index-5.7
Kinematics
0–6 km Shear7 kt
0–1 km Shear4 kt
Eff. Shear20 kt
0–1 km SRH-3
0–3 km SRH9
Eff. SRH9
Storm Motion151° @ 7 kt
0–1 km EHI-0.0
Composite Parameters
Sig. Tornado0.0
STP (eff)0.0
Supercell0.2
K-Index25.6
Thermo & Levels
PWAT1.86 in
0–3 km LR7.5 °C/km
700–500 LR5.8 °C/km
Total Totals45.3
LCL861 hPa
LFC818 hPa
EL146 hPa
Freezing Lvl16,020 ft