Frost Advisory — Louisa, IA, Henry, IA, Des Moines, IA, Van Buren, IA, Lee, IA, Henry, IL, Bureau, IL, Putnam, IL, Mercer, IL, Henderson, IL, Warren, IL, Hancock, IL, McDonough, IL, Scotland, MO, Clark, MO 9:00 a. m.

Mercer County, Illinois, United States

Last updated: 7:38 p. m. CDT  ·  Refresh
9°C
Feels like 6°
Partly Cloudy
▲ 11°  /  ▼ 2°
Wind
12 mph NNW
Humidity
74%
Dew Point
4°
Pressure
29,64 inHg
Visibility
10 mi
UV Index
0,0
Cloud Cover
30%
Sunrise
7:14 a. m.
Sunset
6:20 p. m.
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Mercer County is currently partly cloudy at 9°C. Dry conditions are expected through the next 24 hours. Sunrise: 7:14A. M. · Sunset: 6:20P. M..

Alerts

Frost Advisory
Louisa, IA, Henry, IA, Des Moines, IA, Van Buren, IA, Lee, IA, Henry, IL, Bureau, IL, Putnam, IL, Mercer, IL, Henderson, IL, Warren, IL, Hancock, IL, McDonough, IL, Scotland, MO, Clark, MO
Expires 9:00 a. m.
22 AQI · Good Dominant: O3 Air Quality
Hourly Forecast · Next 24 Hours
Now
9°
12%
8 p. m.
9°
11%
9 p. m.
7°
6%
10 p. m.
7°
6%
11 p. m.
6°
4%
12 a. m.
6°
4%
1 a. m.
5°
3%
2 a. m.
4°
3%
3 a. m.
4°
3%
4 a. m.
3°
3%
5 a. m.
2°
3%
6 a. m.
2°
3%
7 a. m.
2°
3%
8 a. m.
4°
3%
9 a. m.
6°
3%
10 a. m.
8°
3%
11 a. m.
9°
3%
12 p. m.
10°
3%
1 p. m.
13°
3%
2 p. m.
13°
3%
3 p. m.
13°
3%
4 p. m.
13°
3%
5 p. m.
11°
3%
6 p. m.
10°
3%
7-Day Forecast
Tonight
11° 2°
Partly Cloudy.
Sat
14° 2°
Clear.
Sun
18° 4°
Clear.
Mon
22° 6°
Mostly Clear.
Tue
23° 9°
Mostly Clear.
Wed
24° 11°
Partly Cloudy.
Thu
26° 12°
Clear.
TimeTempConditionsPrecipWindHumidity
Now 9° Partly Cloudy 12% 12 mph NNW 74%
8 p. m. 9° Mostly Clear 11% 11 mph NNW 73%
9 p. m. 7° Clear 6% 11 mph N 74%
10 p. m. 7° Clear 6% 10 mph N 76%
11 p. m. 6° Clear 4% 9 mph N 78%
12 a. m. 6° Clear 4% 8 mph N 80%
1 a. m. 5° Clear 3% 7 mph N 82%
2 a. m. 4° Clear 3% 6 mph N 83%
3 a. m. 4° Clear 3% 5 mph N 84%
4 a. m. 3° Clear 3% 4 mph N 84%
5 a. m. 2° Clear 3% 4 mph NNW 84%
6 a. m. 2° Clear 3% 3 mph NNW 84%
7 a. m. 2° Mostly Clear 3% 3 mph NW 81%
8 a. m. 4° Mostly Clear 3% 2 mph W 75%
9 a. m. 6° Mostly Clear 3% 2 mph SSW 68%
10 a. m. 8° Clear 3% 3 mph SSW 60%
11 a. m. 9° Clear 3% 4 mph SSW 53%
12 p. m. 10° Clear 3% 5 mph SW 48%
1 p. m. 13° Clear 3% 6 mph SW 45%
2 p. m. 13° Clear 3% 6 mph SW 44%
3 p. m. 13° Clear 3% 6 mph SW 43%
4 p. m. 13° Clear 3% 6 mph SW 45%
5 p. m. 11° Clear 3% 6 mph SSW 48%
6 p. m. 10° Clear 3% 6 mph SSW 52%
15-Day Forecast
Today
10/16
Partly Cloudy
12%
2°
11°
Sat
10/17
Clear
3%
2°
14°
Sun
10/18
Clear
3%
4°
18°
Mon
10/19
Mostly Clear
3%
6°
22°
Tue
10/20
Mostly Clear
5%
9°
23°
Wed
10/21
Partly Cloudy
9%
11°
24°
Thu
10/22
Clear
5%
12°
26°
Fri
10/23
Clear
8%
13°
26°
Sat
10/24
Mostly Cloudy
35%
12°
26°
Sun
10/25
Mostly Cloudy
35%
9°
20°
Mon
10/26
Overcast
44%
8°
18°
Tue
10/27
Drizzle
60%
7°
17°
Wed
10/28
Clear
60%
8°
18°
Thu
10/29
Drizzle
60%
8°
19°
Fri
10/30
Drizzle
60%
8°
18°
22
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
20 AQI 3.7 µg/m³
O3
Ground-level ozone
Dominant
22 AQI 25 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Today 22 Good 22 20
Sun 26 Good 26 8
Mon 31 Good 31 21
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 vie. oct. 16, 23:00'Z' · F0 · 130 (13 km CONUS/NA)
Hodograph · kt
10 20 30 40 50 60 70 80 SM
0–1 1–3 3–6 6–9 km
Instability
SBCAPE0 J/kg
MLCAPE3 J/kg
MUCAPE26 J/kg
SBCIN-134 J/kg
MLCIN-40 J/kg
Lifted Index13.6
Kinematics
0–6 km Shear51 kt
0–1 km Shear20 kt
Eff. Shear—
0–1 km SRH108
0–3 km SRH124
Eff. SRH—
Storm Motion24° @ 40 kt
0–1 km EHI0.0
Composite Parameters
Sig. Tornado0.0
STP (eff)—
Supercell—
K-Index-0.0
Thermo & Levels
PWAT0.42 in
0–3 km LR5.7 °C/km
700–500 LR4.1 °C/km
Total Totals33.0
LCL934 hPa
LFC826 hPa
EL824 hPa
Freezing Lvl4,259 ft