Washington County, Iowa, United States

Last updated: 5:24 PM CDT  ·  Refresh
17°C
Feels like 12°
Clear
▲ 19°  /  ▼ 4°
Wind
12 mph S
Humidity
54%
Dew Point
6°
Pressure
29.48 inHg
Visibility
10 mi
UV Index
3.2
Cloud Cover
0%
Sunrise
7:21 AM
Sunset
6:21 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Washington County is currently clear at 17°C. Dry conditions are expected through the next 24 hours. Sunrise: 7:21AM · Sunset: 6:21PM.

Alerts

No active alerts for this location.
26 AQI · Good Dominant: O3 Air Quality
Hourly Forecast · Next 24 Hours
Now
17°
3%
6 PM
16°
3%
7 PM
13°
3%
8 PM
13°
3%
9 PM
11°
3%
10 PM
10°
3%
11 PM
9°
3%
12 AM
9°
3%
1 AM
8°
3%
2 AM
8°
3%
3 AM
8°
3%
4 AM
7°
3%
5 AM
5°
3%
6 AM
5°
3%
7 AM
5°
3%
8 AM
7°
3%
9 AM
11°
3%
10 AM
12°
3%
11 AM
14°
3%
12 PM
18°
3%
1 PM
19°
3%
2 PM
19°
3%
3 PM
19°
3%
4 PM
19°
3%
7-Day Forecast
Today
19° 4°
Clear.
Mon
22° 5°
Partly Cloudy.
Tue
23° 7°
Clear.
Wed
24° 7°
Clear.
Thu
26° 10°
Clear.
Fri
26° 11°
Partly Cloudy.
Sat
25° 12°
Overcast.
TimeTempConditionsPrecipWindHumidity
Now 17° Clear 3% 12 mph S 54%
6 PM 16° Clear 3% 9 mph S 56%
7 PM 13° Clear 3% 8 mph S 62%
8 PM 13° Clear 3% 7 mph S 67%
9 PM 11° Clear 3% 7 mph S 71%
10 PM 10° Clear 3% 7 mph S 75%
11 PM 9° Clear 3% 7 mph S 76%
12 AM 9° Clear 3% 7 mph S 76%
1 AM 8° Clear 3% 6 mph S 76%
2 AM 8° Mostly Clear 3% 6 mph S 75%
3 AM 8° Mostly Clear 3% 5 mph S 74%
4 AM 7° Mostly Clear 3% 4 mph S 74%
5 AM 5° Mostly Clear 3% 5 mph SSE 75%
6 AM 5° Mostly Clear 3% 5 mph S 76%
7 AM 5° Mostly Clear 3% 5 mph SSE 76%
8 AM 7° Mostly Clear 3% 4 mph S 73%
9 AM 11° Partly Cloudy 3% 4 mph S 68%
10 AM 12° Partly Cloudy 3% 4 mph S 62%
11 AM 14° Partly Cloudy 3% 5 mph S 56%
12 PM 18° Partly Cloudy 3% 5 mph S 52%
1 PM 19° Partly Cloudy 3% 5 mph S 49%
2 PM 19° Partly Cloudy 3% 5 mph S 49%
3 PM 19° Partly Cloudy 3% 5 mph S 48%
4 PM 19° Partly Cloudy 3% 5 mph SSE 50%
15-Day Forecast
Today
10/18
Clear
3%
4°
19°
Mon
10/19
Partly Cloudy
3%
5°
22°
Tue
10/20
Clear
3%
7°
23°
Wed
10/21
Clear
7%
7°
24°
Thu
10/22
Clear
3%
10°
26°
Fri
10/23
Partly Cloudy
3%
11°
26°
Sat
10/24
Overcast
17%
12°
25°
Sun
10/25
Overcast
25%
12°
25°
Mon
10/26
Partly Cloudy
18%
9°
22°
Tue
10/27
Drizzle
45%
8°
20°
Wed
10/28
Drizzle
60%
8°
21°
Thu
10/29
Drizzle
60%
8°
21°
Fri
10/30
Drizzle
60%
8°
19°
Sat
10/31
Drizzle
60%
9°
20°
Sun
11/1
Drizzle
60%
8°
19°
26
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
17 AQI 3.2 µg/m³
O3
Ground-level ozone
Dominant
26 AQI 28 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Mon 26 Good 26 17
Tue 28 Good 28 28
Wed 35 Good 34 35
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 Oct 18, 21:00'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
MLCAPE4 J/kg
MUCAPE0 J/kg
SBCIN0 J/kg
MLCIN0 J/kg
Lifted Index13.8
Kinematics
0–6 km Shear14 kt
0–1 km Shear11 kt
Eff. Shear—
0–1 km SRH59
0–3 km SRH78
Eff. SRH—
Storm Motion279° @ 14 kt
0–1 km EHI0.0
Composite Parameters
Sig. Tornado0.0
STP (eff)—
Supercell—
K-Index-29.0
Thermo & Levels
PWAT0.35 in
0–3 km LR4.2 °C/km
700–500 LR5.5 °C/km
Total Totals11.4
LCL850 hPa
LFC998 hPa
EL998 hPa
Freezing Lvl13,947 ft