Next open dayWed 12 Aug3,020 mcable car

Titlis

PEAK92/100

Medium confidence

Sharp, clear air across the whole panorama. Best window 09:00–12:00.

Live reading · 17:00 UTC

Instrument reading

Best time tomorrow

09:00–12:0092/100

Evidence for the window

The verdict above is for tomorrow — these are tomorrow's hours, the ones the engine actually scored, with the recommended window lit below.

Rows: local time · temp °C · wind km/h · precip chance % · cloud base m

Cloud base over tomorrow's hours (Wed 12 Aug), 05:00–22:00 local time, against the 3,020 m summit; 9 of 18 hours are clear above it.
Local time	Operating	Temperature (°C)	Wind (km/h)	Precipitation chance (%)	Cloud base (m)	In recommended window
05:00	closed	7	4	0	clear above the summit	no
06:00	closed	7	4	0	clear above the summit	no
07:00	closed	7	3	0	clear above the summit	no
08:00	closed	8	4	0	clear above the summit	no
09:00	open	10	4	0	clear above the summit	yes
10:00	open	11	3	0	clear above the summit	yes
11:00	open	12	3	0	clear above the summit	yes
12:00	open	13	4	0	3640 m	no
13:00	open	13	5	0	3120 m	no
14:00	open	13	7	5	2840 m	no
15:00	open	11	5	57	2700 m	no
16:00	open	9	6	71	clear above the summit	no
17:00	closed	12	7	19	not reported	no
18:00	closed	11	6	5	3080 m	no
19:00	closed	11	5	0	not reported	no
20:00	closed	10	3	0	not reported	no
21:00	closed	9	2	0	not reported	no
22:00	closed	8	5	0	clear above the summit	no

The signature reading

The question a forecast percentage cannot answer: is the viewpoint above the cloud, or inside it, right now?

The verdict above is for the next day — this reading is what the sky looks like right now, not then.

Cloud base is reported far above the 3,020 m viewpoint, around 20900 m — well clear of the summit-vs-cloud question. Expect clear air at the top.

The reasoning, audited

5-day shape