KALN METAR

Current observed weather at St Louis Regional (ALN · KALN), Alton/St Louis, IL, elevation 544 ft. Reported 21 Sep 2026 0535Z, decoded below with the past 24 hours of observations. · Open on the map

All of St Louis Regional — runways, frequencies, charts and live weather

METAR observed 21 Sep 2026 0535Z

MVFR

METAR KALN 210535Z AUTO 28009KT 4SM +TSRA SCT007 BKN015 OVC055 22/21 A3001 RMK AO2 LTG DSNT ALQS P0013 T02160208

Wind

280° at 9 kt

Visibility

4 SM

Ceiling

1,500 ft BKN

Temp / Dewpoint

22° / 21°C

Altimeter

30.01"

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	280° at 9 kt	Direction is degrees true, as reported.
Visibility	4 SM	Prevailing horizontal visibility in statute miles.
Ceiling	1,500 ft BKN	Lowest BKN layer, 1,500 ft above the field.
Sky	Scattered at 700 ft AGL, Broken at 1,500 ft AGL, Overcast at 5,500 ft AGL	—
Temperature	22°C (71°F)	—
Dewpoint	21°C (69°F)	—
Temp/dewpoint spread	1°C	A spread of 2°C or less favours fog or low stratus forming.
Altimeter	30.01 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
0535Z	VFR	180° at 5 kt	10+ SM	Clear	25°C
0635Z	VFR	170° at 3 kt	10+ SM	Clear	24°C
0735Z	VFR	190° at 4 kt	10+ SM	Clear	23°C
0835Z	VFR	220° at 4 kt	10+ SM	Clear	23°C
0935Z	VFR	280° at 8 kt	10+ SM	Clear	25°C
1035Z	VFR	000° at 0 kt	10+ SM	Clear	22°C
1150Z	VFR	320° at 5 kt	10+ SM	Clear	23°C
1250Z	VFR	000° at 0 kt	10+ SM	Clear	23°C
1350Z	VFR	Variable at 4 kt	10+ SM	Clear	24°C
1450Z	VFR	Variable at 4 kt	10+ SM	Clear	26°C
1550Z	VFR	Variable at 6 kt	10+ SM	Clear	28°C
1645Z	VFR	100° at 7 kt	10+ SM	Clear	29°C
1750Z	VFR	060° at 3 kt	10+ SM	Clear	31°C
1845Z	VFR	180° at 3 kt	10+ SM	Clear	32°C
1950Z	VFR	110° at 5 kt	10+ SM	Clear	32°C
2045Z	VFR	260° at 3 kt	10+ SM	Clear	33°C
2150Z	VFR	250° at 3 kt	10+ SM	9,000 ft	32°C
2250Z	VFR	300° at 3 kt	10+ SM	Clear	32°C
2350Z	VFR	Variable at 4 kt	10+ SM	Clear	30°C
0050Z	VFR	030° at 8 kt	10+ SM	Clear	26°C
0150Z	VFR	040° at 10 kt	10+ SM	Clear	25°C
0250Z	VFR	050° at 10 kt	10+ SM	11,000 ft	25°C
0335Z	MVFR	310° at 11-14 kt	3 SM	7,500 ft	23°C
0435Z	VFR	000° at 0 kt	10+ SM	Clear	22°C

Frequently asked

What is the current METAR at KALN?

The 21 Sep 2026 0535Z observation at St Louis Regional reads: METAR KALN 210535Z AUTO 28009KT 4SM +TSRA SCT007 BKN015 OVC055 22/21 A3001 RMK AO2 LTG DSNT ALQS P0013 T02160208

Is KALN VFR right now?

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

How often is the KALN 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 KALN

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.