Excessive Heat Warning — Buchanan, IA, Delaware, IA, Dubuque, IA, Benton, IA, Linn, IA, Jones, IA, Jackson, IA, Iowa, IA, Johnson, IA, Cedar, IA, Clinton, IA, Muscatine, IA, Scott, IA, Keokuk, IA, Washington, IA, Louisa, IA, Jefferson, IA, Henry, IA, Des Moines, IA, Van Buren, IA, Lee, IA, Whiteside, IL, Rock Island, IL, Henry, IL, Bureau, IL, Putnam, IL, Mercer, IL, Henderson, IL, Warren, IL, Hancock, IL, McDonough, IL, Scotland, MO, Clark, MO 9:00 PM Extreme Heat Watch 10:00 PM

Washington County, Iowa, United States

Last updated: 8:57 AM CDT  ·  Refresh
27°C
Feels like 30°
Fog
▲ 36°  /  ▼ 24°
Wind
4 mph SSW
Humidity
89%
Dew Point
25°
Pressure
29.11 inHg
Visibility
0 mi
UV Index
3.5
Cloud Cover
85%
Sunrise
5:56 AM
Sunset
8:29 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Washington County is currently fog at 27°C. Dry conditions are expected through the next 24 hours. Atmospheric instability is elevated (CAPE up to 3924 J/kg) — isolated convective development possible. Sunrise: 5:56AM · Sunset: 8:29PM.

Alerts

Excessive Heat Warning
Buchanan, IA, Delaware, IA, Dubuque, IA, Benton, IA, Linn, IA, Jones, IA, Jackson, IA, Iowa, IA, Johnson, IA, Cedar, IA, Clinton, IA, Muscatine, IA, Scott, IA, Keokuk, IA, Washington, IA, Louisa, IA, Jefferson, IA, Henry, IA, Des Moines, IA, Van Buren, IA, Lee, IA, Whiteside, IL, Rock Island, IL, Henry, IL, Bureau, IL, Putnam, IL, Mercer, IL, Henderson, IL, Warren, IL, Hancock, IL, McDonough, IL, Scotland, MO, Clark, MO
Expires 9:00 PM
Extreme Heat Watch
Expires 10:00 PM
49 AQI · Good Dominant: PM2.5 Air Quality
Hourly Forecast · Next 24 Hours
Now
27°
11%
9 AM
28°
14%
10 AM
31°
14%
11 AM
32°
14%
12 PM
34°
3%
1 PM
35°
3%
2 PM
36°
4%
3 PM
36°
4%
4 PM
36°
13%
5 PM
36°
13%
6 PM
35°
13%
7 PM
33°
13%
8 PM
31°
13%
9 PM
29°
14%
10 PM
28°
18%
11 PM
28°
18%
12 AM
27°
18%
1 AM
26°
18%
2 AM
26°
18%
3 AM
26°
18%
4 AM
26°
18%
5 AM
26°
8%
6 AM
26°
5%
7 AM
26°
12%
7-Day Forecast
Today
36° 24°
Mostly Cloudy.
Mon
37° 24°
Mostly Clear with a 25% chance of rain.
Tue
30° 21°
Mostly Cloudy.
Wed
31° 18°
Mostly Clear with a 32% chance of rain.
Thu
31° 18°
Clear with a 64% chance of rain.
Fri
28° 19°
Rain, 64% chance.
Sat
29° 18°
Drizzle, 63% chance.
TimeTempConditionsPrecipWindHumidity
Now 27° Fog 11% 4 mph SSW 89%
9 AM 28° Overcast 14% 5 mph SSW 83%
10 AM 31° Mostly Cloudy 14% 5 mph SSW 78%
11 AM 32° Mostly Cloudy 14% 5 mph WSW 71%
12 PM 34° Mostly Cloudy 3% 5 mph W 66%
1 PM 35° Mostly Cloudy 3% 4 mph WSW 62%
2 PM 36° Partly Cloudy 4% 4 mph W 58%
3 PM 36° Partly Cloudy 4% 4 mph W 54%
4 PM 36° Partly Cloudy 13% 2 mph W 54%
5 PM 36° Partly Cloudy 13% 3 mph S 56%
6 PM 35° Partly Cloudy 13% 3 mph SE 61%
7 PM 33° Partly Cloudy 13% 4 mph SSE 66%
8 PM 31° Partly Cloudy 13% 5 mph SSW 70%
9 PM 29° Partly Cloudy 14% 6 mph SSW 74%
10 PM 28° Mostly Cloudy 18% 6 mph SSW 74%
11 PM 28° Partly Cloudy 18% 7 mph SSW 75%
12 AM 27° Partly Cloudy 18% 7 mph SSW 76%
1 AM 26° Partly Cloudy 18% 5 mph SSW 79%
2 AM 26° Rain 18% 5 mph SSW 83%
3 AM 26° Rain 18% 7 mph SSE 86%
4 AM 26° Rain 18% 5 mph SSE 86%
5 AM 26° Partly Cloudy 8% 6 mph SSE 86%
6 AM 26° Partly Cloudy 5% 8 mph SSE 86%
7 AM 26° Mostly Clear 12% 8 mph S 82%
15-Day Forecast
Today
7/26
Mostly Cloudy
18%
24°
36°
Mon
7/27
Mostly Clear
25%
24°
37°
Tue
7/28
Mostly Cloudy
14%
21°
30°
Wed
7/29
Mostly Clear
32%
18°
31°
Thu
7/30
Clear
64%
18°
31°
Fri
7/31
Rain
64%
19°
28°
Sat
8/1
Drizzle
63%
18°
29°
Sun
8/2
Drizzle
42%
18°
30°
Mon
8/3
Clear
44%
18°
32°
Tue
8/4
Drizzle
51%
20°
35°
Wed
8/5
Drizzle
60%
19°
32°
Thu
8/6
Drizzle
60%
18°
31°
Fri
8/7
Drizzle
60%
17°
31°
Sat
8/8
Drizzle
60%
18°
33°
Sun
8/9
Drizzle
60%
19°
33°
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
37 AQI 41 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Mon 49 Good 37 49
Tue 41 Good 37 41
Wed 55 Moderate 38 55
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 Sun Jul 26, 11:00'Z' · F0 · 130 (13 km CONUS/NA)
Hodograph · kt
10 20 30 40 50 SM
0–1 1–3 3–6 6–9 km
Instability
SBCAPE3296 J/kg
MLCAPE3226 J/kg
MUCAPE4535 J/kg
SBCIN0 J/kg
MLCIN0 J/kg
Lifted Index-9.2
Kinematics
0–6 km Shear35 kt
0–1 km Shear12 kt
Eff. Shear33 kt
0–1 km SRH-76
0–3 km SRH-243
Eff. SRH-243
Storm Motion278° @ 28 kt
0–1 km EHI-1.6
Composite Parameters
Sig. Tornado0.0
STP (eff)0.0
Supercell0.0
K-Index26.4
Thermo & Levels
PWAT1.79 in
0–3 km LR4.5 °C/km
700–500 LR7.8 °C/km
Total Totals48.9
LCL965 hPa
LFC986 hPa
EL155 hPa
Freezing Lvl15,203 ft