Acceptable conditions

Delémont — 825m

Jura · Orientation S
53%
Local flying
Best window: 9h — 11h
Local flying reaches 53% because the launch setup looks mostly workable, while lift quality and timing are what keep the score from climbing higher.
Local window 9h — 11hXC window No clear XC window
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Launch wind
7 km/h
SW · 228°
Gust spread
40 km/h
rough launch feel
Lift quality
0.5 m/s
4/5 climb support
Cloud base
1191 m
30.6 km
Precipitation risk
0.5 mm/h
becomes limiting
Acceptable conditions

Delémont — 825m

Jura · Orientation S

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Hourly windows

2026-05-04 · Local flying
6h
🌙
NIGHT
7h
☁️
MARGINAL
8h
☁️
MARGINAL
9h
⛅
GO
10h
⛅
GO
11h
⛅
GO
12h
⛅
MARGINAL
13h
⛅
MARGINAL
14h
⛅
MARGINAL
15h
🌦
NO-GO
16h
🌦
NO-GO
17h
🌦
NO-GO
tailwind
18h
🌤
NO-GO
tailwind
19h
🌤
NO-GO
tailwind
20h
🌤
NO-GO
Best window: 9h — 11h
AI analysis
No analysis available for this day.

📊 Wind & thermals aloft

🎓 Full view
💡
Overview: colored arrows show wind speed and direction. Yellow to orange cells highlight the active thermal layer. The LAUNCH line marks the takeoff altitude.
Alt.6h7h8h9h10h11h12h13h14h15h16h17h18h
Top
BLH
——
865m
1180m
1390m
1620m
1835m
1990m
2050m
1980m
1815m
1585m
1345m
Base
clouds
——
1125m
1313m
1575m
1825m
2025m
2225m
2312m
2187m
1963m
1800m
1675m
3600m
↗
35
↗
38
↗
40
↗
39
↗
39
↗
40
↗
42
↗
45
↗
47
↗
49
↗
51
↗
51
↗
49
3400m
↗
36
↗
39
↗
41
↗
41
↗
41
↗
41
↗
43
↗
46
↗
48
↗
50
↗
51
↗
51
↗
49
3200m
↗
38
↗
40
↗
42
↗
42
↗
42
↗
43
↗
44
↗
46
↗
48
↗
50
↗
52
↗
52
↗
50
3000m
↗
38
↗
40
↗
42
↗
42
↗
43
↗
43
↗
44
↗
46
↗
47
↗
49
↗
51
↗
51
↗
49
2800m
↗
37
↗
39
↗
40
↗
41
↗
41
↗
42
↗
42
↗
43
↗
44
↗
46
↗
47
↗
47
↗
46
2600m
↗
35
↗
37
↗
38
↗
39
↗
40
↗
40
↗
40
↗
41
↗
41
↗
42
↗
43
↗
43
↗
43
2400m
↗
34
↗
35
↗
36
↗
37
↗
38
↗
39
↗
39
↗
38
↗
38
↗
39
↗
39
↗
40
↗
39
2200m
↗
33
↗
34
↗
35
↗
36
↗
37
↗
38
↗
37
↗
36
↗
35
↗
35
↗
35
↗
36
↗
36
2000m
↗
31
↗
32
↗
33
↗
34
↗
36
↗
36
↗
35
↗
33
↗
32
↗
32
↗
31
↗
32
↗
33
1800m
↗
27
↗
27
↗
28
↗
30
↗
32
↗
32
↗
31
↗
29
↗
27
↗
27
↗
28
↗
29
↗
30
1600m
↗
22
↗
23
↗
24
↗
25
↗
28
↗
28
↗
27
↗
24
↗
22
↗
22
→
24
→
25
→
26
1400m
↗
18
↗
18
↗
19
↗
20
↗
22
↗
23
↗
22
↗
21
↗
19
↗
19
→
20
→
21
→
22
1200m
↗
12
↑
13
↑
14
↑
14
↑
15
↗
16
↗
17
↗
18
↗
18
↗
17
→
16
→
17
→
17
1000m
↑
8
↑
8
↑
9
↑
9
↑
9
↑
9
↗
12
↗
15
↗
16
→
14
→
13
↘
13
→
12
800mLAUNCH
↑
7
↑
7
↖
8
↑
8
↑
8
↑
8
↗
10
↗
13
↗
14
→
12
→
11
↘
12
↘
10
600m
400m
200m
0m
0–56–1011–1516–2021–25>25km/hBLH topCloud baseThermals

💨 Wind at launch

🎓 Safety thresholds
💡
Mean wind is the constant speed. Gusts are sudden accelerations. Thresholds: 15 km/h = caution, 25 km/h = critical.

🌡 Temperature

🎓 Why it matters?
💡
Launch temperature affects your comfort and safety. Below 0°C, your fingers go numb and handling controls becomes difficult.

💧 Precipitation

🎓 Impact on the wing
⚠️
Golden rule: never fly in rain or snow. Water weighs down the wing (up to +5 kg), alters its aerodynamic profile and reduces lift. Snow can freeze on suspension lines.
Snow Rain/Showers

Sources: Open-Meteo (AROME 1.3km, ICON-D2 2km) · 2026-05-04 · Data fetched on 28 Apr at 20:09
⚠️ This report is informational only. The final decision to fly always rests with the pilot on site.