Heat Advisory — Hardin, OH, Mercer, OH, Auglaize, OH, Darke, OH, Shelby, OH, Logan, OH, Miami, OH, Champaign, OH, Clark, OH, Preble, OH, Montgomery, OH, Greene, OH, Butler, OH, Warren, OH, Clinton, OH, Hamilton, OH, Clermont, OH, Brown, OH, Highland, OH, Adams, OH, Union, OH, Delaware, OH, Madison, OH, Franklin, OH, Licking, OH, Fayette, OH, Pickaway, OH, Fairfield, OH, Ross, OH, Hocking, OH, Pike, OH, Scioto, OH 7:00 PM Excessive Heat Warning — Hardin, OH, Mercer, OH, Auglaize, OH, Darke, OH, Shelby, OH, Logan, OH, Union, OH, Delaware, OH, Miami, OH, Champaign, OH, Clark, OH, Madison, OH, Franklin, OH, Licking, OH, Preble, OH, Montgomery, OH, Greene, OH, Fayette, OH, Pickaway, OH, Fairfield, OH, Butler, OH, Warren, OH, Clinton, OH, Ross, OH, Hocking, OH, Hamilton, OH, Clermont, OH, Brown, OH, Highland, OH, Adams, OH, Pike, OH, Scioto, OH 7:00 PM

Mercer County, Ohio, United States

Last updated: 5:04 PM CDT  ·  Refresh
33°C
Feels like 39°
Clear
▲ 33°  /  ▼ 22°
Wind
10 mph SW
Humidity
60%
Dew Point
23°
Pressure
29.06 inHg
Visibility
10 mi
UV Index
6.4
Cloud Cover
2%
Sunrise
6:12 AM
Sunset
9:12 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Mercer County is currently clear at 33°C. Dry conditions are expected through the next 24 hours. Atmospheric instability is elevated (CAPE up to 3760 J/kg) — isolated convective development possible. Sunrise: 6:12AM · Sunset: 9:12PM.

Alerts

Heat Advisory
Hardin, OH, Mercer, OH, Auglaize, OH, Darke, OH, Shelby, OH, Logan, OH, Miami, OH, Champaign, OH, Clark, OH, Preble, OH, Montgomery, OH, Greene, OH, Butler, OH, Warren, OH, Clinton, OH, Hamilton, OH, Clermont, OH, Brown, OH, Highland, OH, Adams, OH, Union, OH, Delaware, OH, Madison, OH, Franklin, OH, Licking, OH, Fayette, OH, Pickaway, OH, Fairfield, OH, Ross, OH, Hocking, OH, Pike, OH, Scioto, OH
Expires 7:00 PM
Excessive Heat Warning
Hardin, OH, Mercer, OH, Auglaize, OH, Darke, OH, Shelby, OH, Logan, OH, Union, OH, Delaware, OH, Miami, OH, Champaign, OH, Clark, OH, Madison, OH, Franklin, OH, Licking, OH, Preble, OH, Montgomery, OH, Greene, OH, Fayette, OH, Pickaway, OH, Fairfield, OH, Butler, OH, Warren, OH, Clinton, OH, Ross, OH, Hocking, OH, Hamilton, OH, Clermont, OH, Brown, OH, Highland, OH, Adams, OH, Pike, OH, Scioto, OH
Expires 7:00 PM
68 AQI · Moderate Dominant: PM2.5 Air Quality
Hourly Forecast · Next 24 Hours
Now
33°
3%
7 PM
33°
3%
8 PM
32°
3%
9 PM
29°
3%
10 PM
28°
3%
11 PM
26°
3%
12 AM
26°
3%
1 AM
25°
3%
2 AM
24°
3%
3 AM
24°
3%
4 AM
23°
3%
5 AM
23°
5%
6 AM
22°
5%
7 AM
23°
5%
8 AM
24°
5%
9 AM
26°
5%
10 AM
28°
5%
11 AM
29°
5%
12 PM
29°
5%
1 PM
32°
5%
2 PM
33°
5%
3 PM
33°
5%
4 PM
33°
5%
5 PM
34°
3%
7-Day Forecast
Tonight
33° 22°
Clear.
Thu
34° 22°
Mostly Clear.
Fri
33° 24°
Mostly Cloudy with a 70% chance of rain.
Sat
31° 22°
Partly Cloudy with a 57% chance of rain.
Sun
31° 22°
Rain, 82% chance.
Mon
29° 21°
Rain, 71% chance.
Tue
27° 20°
Rain, 64% chance.
TimeTempConditionsPrecipWindHumidity
Now 33° Clear 3% 10 mph SW 60%
7 PM 33° Clear 3% 9 mph SW 66%
8 PM 32° Clear 3% 8 mph SW 71%
9 PM 29° Clear 3% 7 mph SW 77%
10 PM 28° Clear 3% 8 mph SW 82%
11 PM 26° Clear 3% 8 mph SW 87%
12 AM 26° Clear 3% 7 mph SW 88%
1 AM 25° Clear 3% 7 mph SW 89%
2 AM 24° Clear 3% 7 mph SW 90%
3 AM 24° Clear 3% 6 mph SW 91%
4 AM 23° Clear 3% 6 mph SW 93%
5 AM 23° Clear 5% 6 mph WSW 94%
6 AM 22° Clear 5% 6 mph SW 92%
7 AM 23° Clear 5% 6 mph SW 91%
8 AM 24° Clear 5% 7 mph SW 88%
9 AM 26° Clear 5% 7 mph WSW 81%
10 AM 28° Clear 5% 7 mph WSW 76%
11 AM 29° Clear 5% 7 mph WSW 70%
12 PM 29° Mostly Clear 5% 7 mph WSW 66%
1 PM 32° Mostly Clear 5% 8 mph SW 63%
2 PM 33° Partly Cloudy 5% 8 mph SW 61%
3 PM 33° Mostly Clear 5% 8 mph SW 60%
4 PM 33° Mostly Clear 5% 9 mph SW 59%
5 PM 34° Mostly Clear 3% 9 mph SW 59%
15-Day Forecast
Today
7/1
Clear
3%
22°
33°
Thu
7/2
Mostly Clear
5%
22°
34°
Fri
7/3
Mostly Cloudy
70%
24°
33°
Sat
7/4
Partly Cloudy
57%
22°
31°
Sun
7/5
Rain
82%
22°
31°
Mon
7/6
Rain
71%
21°
29°
Tue
7/7
Rain
64%
20°
27°
Wed
7/8
Rain
63%
20°
28°
Thu
7/9
Rain
68%
19°
27°
Fri
7/10
Thunderstorm
90%
18°
28°
Sat
7/11
Drizzle
64%
19°
27°
Sun
7/12
Drizzle
60%
18°
27°
Mon
7/13
Drizzle
60%
18°
27°
Tue
7/14
Drizzle
60%
17°
27°
Wed
7/15
Drizzle
60%
17°
25°
68
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
68 AQI 18.5 µg/m³
O3
Ground-level ozone
35 AQI 38 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Thu 68 Moderate 35 68
Fri 59 Moderate 37 59
Sat 59 Moderate 36 59
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 Wed Jul 1, 20:00'Z' · F0 · 130 (13 km CONUS/NA)
Hodograph · kt
10 20 30 40 SM
0–1 1–3 3–6 6–9 km
Instability
SBCAPE3575 J/kg
MLCAPE2204 J/kg
MUCAPE3575 J/kg
SBCIN-83 J/kg
MLCIN0 J/kg
Lifted Index-7.4
Kinematics
0–6 km Shear19 kt
0–1 km Shear3 kt
Eff. Shear15 kt
0–1 km SRH-3
0–3 km SRH-70
Eff. SRH-70
Storm Motion219° @ 26 kt
0–1 km EHI-0.1
Composite Parameters
Sig. Tornado0.0
STP (eff)0.0
Supercell0.0
K-Index21.6
Thermo & Levels
PWAT1.29 in
0–3 km LR6.7 °C/km
700–500 LR6.9 °C/km
Total Totals46.7
LCL858 hPa
LFC738 hPa
EL143 hPa
Freezing Lvl14,390 ft