KMIW METAR

Current observed weather at Marshalltown Municipal (MIW · KMIW), Marshalltown, IA, elevation 975 ft. Reported 21 Sep 2026 0453Z, decoded below with the past 24 hours of observations. · Open on the map

All of Marshalltown Municipal — runways, frequencies, charts and live weather

METAR observed 21 Sep 2026 0453Z

MVFR

METAR KMIW 210453Z AUTO 08012KT 10SM OVC021 16/13 A3009 RMK AO2 SLP188 T01610128

Wind

080° at 12 kt

Visibility

10+ SM

Ceiling

2,100 ft OVC

Temp / Dewpoint

16° / 13°C

Altimeter

30.09"

Times are UTC (Zulu), as they appear in the report.

What it says

Field	Value	What that means
Flight category	MVFR	Marginal VFR — ceiling 1,000 to 3,000 ft and/or visibility 3 to 5 SM.
Wind	080° at 12 kt	Direction is degrees true, as reported.
Visibility	10+ SM	10 SM is the maximum an automated US station reports; it means 10 or greater.
Ceiling	2,100 ft OVC	Lowest OVC layer, 2,100 ft above the field.
Sky	Overcast at 2,100 ft AGL	—
Temperature	16°C (61°F)	—
Dewpoint	13°C (55°F)	—
Temp/dewpoint spread	3°C	The margin before the air reaches saturation.
Altimeter	30.09 inHg	Set this in the Kollsman window; it is the field’s current sea level pressure setting.

VFRMVFRIFRLIFRhover for the full observation

Flight category

Wind · kt (gust shading)

Ceiling · ft (log scale, ▲ = unlimited)

Visibility · SM

All 24 stored observations time · category · wind · visibility · ceiling · temp

Time	Category	Wind	Visibility	Ceiling	Temp
0553Z	LIFR	360° at 9 kt	3 SM	300 ft	18°C
0653Z	LIFR	270° at 8-19 kt	1.75 SM	300 ft	18°C
0753Z	VFR	040° at 10 kt	9 SM	11,000 ft	17°C
0853Z	VFR	040° at 10 kt	10+ SM	9,000 ft	18°C
0953Z	IFR	040° at 8 kt	10+ SM	700 ft	18°C
1053Z	IFR	050° at 12-18 kt	10+ SM	600 ft	18°C
1153Z	LIFR	050° at 7 kt	3 SM	300 ft	17°C
1253Z	IFR	050° at 10 kt	2.5 SM	500 ft	17°C
1353Z	IFR	060° at 13-20 kt	4 SM	500 ft	17°C
1453Z	IFR	060° at 10 kt	5 SM	800 ft	17°C
1553Z	MVFR	060° at 13 kt	10+ SM	1,000 ft	17°C
1653Z	MVFR	070° at 13-24 kt	6 SM	1,300 ft	18°C
1753Z	IFR	050° at 13-22 kt	3 SM	800 ft	17°C
1853Z	MVFR	060° at 17-25 kt	10+ SM	1,000 ft	17°C
1953Z	IFR	070° at 12 kt	8 SM	900 ft	17°C
2053Z	MVFR	080° at 17-26 kt	10+ SM	1,600 ft	18°C
2153Z	MVFR	080° at 12-23 kt	10+ SM	1,800 ft	18°C
2253Z	MVFR	080° at 16-21 kt	10+ SM	1,800 ft	17°C
2353Z	MVFR	080° at 12-21 kt	10+ SM	1,900 ft	17°C
0053Z	MVFR	070° at 9 kt	10+ SM	1,500 ft	17°C
0153Z	MVFR	090° at 11-22 kt	10+ SM	2,600 ft	17°C
0253Z	VFR	080° at 9 kt	10+ SM	3,400 ft	17°C
0353Z	MVFR	080° at 11-19 kt	10+ SM	2,900 ft	16°C
0453Z	MVFR	080° at 12 kt	10+ SM	2,100 ft	16°C

Frequently asked

What is the current METAR at KMIW?

The 21 Sep 2026 0453Z observation at Marshalltown Municipal reads: METAR KMIW 210453Z AUTO 08012KT 10SM OVC021 16/13 A3009 RMK AO2 SLP188 T01610128

Is KMIW VFR right now?

Marshalltown Municipal is reporting MVFR. Marginal VFR — ceiling 1,000 to 3,000 ft and/or visibility 3 to 5 SM.

How often is the KMIW METAR updated?

Routine observations are issued hourly, usually in the 5 minutes before the hour. A SPECI is issued between them whenever conditions change significantly — a ceiling or visibility crossing a category threshold, a wind shift, or the onset of precipitation or a thunderstorm.

More about KMIW

Observations from the US National Weather Service Aviation Weather Center. Times are UTC (Zulu). For planning and education only — always confirm with an official preflight briefing.

Something here wrong or out of date? Report a data problem.