Heat Advisory — Iowa, IA, Johnson, IA, Cedar, IA, Muscatine, IA, Scott, IA, Keokuk, IA, Washington, IA, Louisa, IA, Jefferson, IA, Henry, IA, Des Moines, IA, Van Buren, IA, Lee, IA, Rock Island, IL, Henry, IL, Mercer, IL, Henderson, IL, Warren, IL, Hancock, IL, McDonough, IL, Scotland, MO, Clark, MO 7:00 PM

Mercer County, Illinois, United States

Last updated: 12:05 AM CDT  ·  Refresh
25°C
Feels like 24°
Mostly Clear
▲ 34°  /  ▼ 22°
Wind
11 mph SSE
Humidity
65%
Dew Point
19°
Pressure
29.18 inHg
Visibility
10 mi
UV Index
0.0
Cloud Cover
22%
Sunrise
6:28 AM
Sunset
7:37 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Mercer County is currently mostly clear at 25°C. Dry conditions are expected through the next 24 hours. Atmospheric instability is elevated (CAPE up to 2689 J/kg) — isolated convective development possible. Sunrise: 6:28AM · Sunset: 7:37PM.

Alerts

Heat Advisory
Iowa, IA, Johnson, IA, Cedar, IA, Muscatine, IA, Scott, IA, Keokuk, IA, Washington, IA, Louisa, IA, Jefferson, IA, Henry, IA, Des Moines, IA, Van Buren, IA, Lee, IA, Rock Island, IL, Henry, IL, Mercer, IL, Henderson, IL, Warren, IL, Hancock, IL, McDonough, IL, Scotland, MO, Clark, MO
Expires 7:00 PM
59 AQI · Moderate Dominant: PM2.5 Air Quality
Hourly Forecast · Next 24 Hours
Now
25°
15%
1 AM
26°
15%
2 AM
25°
18%
3 AM
24°
18%
4 AM
24°
18%
5 AM
23°
18%
6 AM
23°
20%
7 AM
23°
21%
8 AM
24°
21%
9 AM
24°
26%
10 AM
26°
22%
11 AM
27°
22%
12 PM
29°
19%
1 PM
32°
7%
2 PM
33°
12%
3 PM
33°
17%
4 PM
33°
17%
5 PM
33°
25%
6 PM
32°
22%
7 PM
31°
20%
8 PM
29°
21%
9 PM
28°
21%
10 PM
28°
24%
11 PM
27°
26%
7-Day Forecast
Today
34° 22°
Partly Cloudy with a 26% chance of rain.
Tue
37° 22°
Mostly Clear with a 20% chance of rain.
Wed
38° 22°
Clear with a 32% chance of rain.
Thu
36° 19°
Partly Cloudy with a 58% chance of rain.
Fri
37° 23°
Mostly Clear with a 52% chance of rain.
Sat
35° 22°
Mostly Clear with a 36% chance of rain.
Sun
32° 19°
Mostly Cloudy with a 27% chance of rain.
TimeTempConditionsPrecipWindHumidity
Now 25° Mostly Clear 15% 11 mph SSE 65%
1 AM 26° Mostly Clear 15% 11 mph S 59%
2 AM 25° Mostly Clear 18% 11 mph S 62%
3 AM 24° Partly Cloudy 18% 10 mph S 64%
4 AM 24° Mostly Cloudy 18% 10 mph S 66%
5 AM 23° Partly Cloudy 18% 10 mph S 69%
6 AM 23° Partly Cloudy 20% 10 mph SSW 71%
7 AM 23° Partly Cloudy 21% 11 mph SSW 73%
8 AM 24° Partly Cloudy 21% 11 mph SSW 72%
9 AM 24° Partly Cloudy 26% 12 mph SSW 70%
10 AM 26° Partly Cloudy 22% 12 mph SSW 69%
11 AM 27° Mostly Clear 22% 12 mph SSW 66%
12 PM 29° Mostly Clear 19% 12 mph SSW 62%
1 PM 32° Mostly Clear 7% 12 mph SW 55%
2 PM 33° Partly Cloudy 12% 11 mph SW 54%
3 PM 33° Partly Cloudy 17% 10 mph SSW 54%
4 PM 33° Partly Cloudy 17% 9 mph SSW 54%
5 PM 33° Partly Cloudy 25% 8 mph SSW 60%
6 PM 32° Mostly Cloudy 22% 7 mph S 64%
7 PM 31° Mostly Cloudy 20% 7 mph S 68%
8 PM 29° Mostly Cloudy 21% 7 mph S 70%
9 PM 28° Mostly Cloudy 21% 7 mph S 71%
10 PM 28° Partly Cloudy 24% 8 mph S 72%
11 PM 27° Partly Cloudy 26% 7 mph S 71%
15-Day Forecast
Today
8/31
Partly Cloudy
26%
22°
34°
Tue
9/1
Mostly Clear
20%
22°
37°
Wed
9/2
Clear
32%
22°
38°
Thu
9/3
Partly Cloudy
58%
19°
36°
Fri
9/4
Mostly Clear
52%
23°
37°
Sat
9/5
Mostly Clear
36%
22°
35°
Sun
9/6
Mostly Cloudy
27%
19°
32°
Mon
9/7
Rain
53%
18°
35°
Tue
9/8
Mostly Clear
35%
17°
28°
Wed
9/9
Partly Cloudy
24%
16°
29°
Thu
9/10
Drizzle
60%
18°
31°
Fri
9/11
Drizzle
60%
17°
31°
Sat
9/12
Drizzle
60%
18°
30°
Sun
9/13
Drizzle
60%
18°
32°
Mon
9/14
Drizzle
60%
17°
30°
59
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
59 AQI 13.5 µg/m³
O3
Ground-level ozone
35 AQI 38 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Today 59 Moderate 35 59
Tue 61 Moderate 41 61
Wed 63 Moderate 42 63
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 LCL0°C Temperature (°C) Pressure (hPa)
Temp Dewpoint Parcel (SB) CAPE CIN Dry adiabat Moist adiabat Mixing ratio
RAP
Valid Mon Aug 31, 03:00'Z' · F0 · 130 (13 km CONUS/NA)
Hodograph · kt
10 20 30 40 SM
0–1 1–3 3–6 6–9 km
Instability
SBCAPE0 J/kg
MLCAPE20 J/kg
MUCAPE131 J/kg
SBCIN—
MLCIN0 J/kg
Lifted Index0.1
Kinematics
0–6 km Shear31 kt
0–1 km Shear24 kt
Eff. Shear—
0–1 km SRH227
0–3 km SRH266
Eff. SRH—
Storm Motion297° @ 14 kt
0–1 km EHI0.0
Composite Parameters
Sig. Tornado0.0
STP (eff)—
Supercell—
K-Index14.3
Thermo & Levels
PWAT1.58 in
0–3 km LR4.1 °C/km
700–500 LR6.9 °C/km
Total Totals44.3
LCL907 hPa
LFC—
EL—
Freezing Lvl15,725 ft