Acceptable conditions

Montgremay — 875m

Jura · Orientation N, NW
60%
Local flying
Best window: 10h — 18h
Local flying reaches 60% because launch wind and basic weather stay usable, but the day does not generate enough lift to feel easy or rewarding for long.
Local window 10h — 18hXC window No clear XC window
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Launch wind
8 km/h
N · 340°
Gust spread
27 km/h
rough launch feel
Lift quality
0.0 m/s
0/5 climb support
Cloud base
1468 m
41.7 km
Precipitation risk
Dry
no signal
Acceptable conditions

Montgremay — 875m

Jura · Orientation N, NW

Save this forecast to your account for quick access later.

Hourly windows

2026-04-09 · Local flying
6h
🌙
NIGHT
7h
☀️
MARGINAL
8h
☀️
MARGINAL
9h
🌤
MARGINAL
10h
🌤
GO
11h
☀️
GO
12h
☀️
GO
13h
☀️
GO
14h
☀️
GO
15h
☀️
GO
16h
☀️
GO
17h
☀️
GO
18h
☀️
GO
19h
☀️
MARGINAL
20h
☀️
GO
Best window: 10h — 18h
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
——
890m
970m
1135m
1335m
1465m
1600m
1720m
1795m
1710m
1620m
1570m
Base
clouds
——
1638m
1763m
2025m
1838m
2038m
2338m
2563m
2650m
2950m
2787m
2513m
3600m
↘
19
↘
20
↘
21
↘
21
↘
21
↘
20
↘
19
↘
18
↘
19
↘
20
↘
23
↘
25
↘
26
3400m
↘
18
↘
19
↘
19
↘
20
↘
20
↘
19
↘
19
↘
17
↘
17
↘
18
↘
20
↘
22
↘
24
3200m
↘
18
↘
18
↘
18
↘
19
↘
19
↘
18
↘
18
↘
16
↘
16
↘
15
↘
17
↘
20
↘
21
3000m
↘
16
↘
16
↘
16
↘
17
↘
18
↘
17
↘
17
↘
16
↘
15
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15
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16
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18
↘
19
2800m
↘
14
↘
14
↘
15
↘
16
↘
16
↘
16
↘
16
↘
15
↘
15
↘
15
↘
16
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17
↘
18
2600m
↘
12
↘
12
↘
13
↘
14
↘
15
↘
15
↘
15
↘
14
↘
15
↘
15
↘
16
↘
16
↘
16
2400m
↘
10
↘
11
↘
11
↘
13
↘
13
↘
14
↘
14
↘
13
↘
15
↘
15
↘
15
↘
15
↘
15
2200m
↘
8
↘
9
↘
10
↘
11
↘
12
↘
13
↘
13
↘
13
↘
14
↘
15
↘
15
↘
14
↘
13
2000m
↘
6
↘
7
↘
8
↘
9
↘
11
↘
12
↘
12
↘
12
↘
14
↘
15
↘
15
↘
13
↘
12
1800m
↘
4
→
5
→
7
→
9
→
10
→
12
↘
12
→
12
→
15
→
16
↘
15
↘
12
↘
10
1600m
→
2
→
4
→
5
→
8
→
9
→
11
→
12
→
12
→
15
→
16
↘
15
↘
11
↘
8
1400m
→
2
↗
3
→
4
→
6
→
8
→
10
→
11
→
11
→
14
↘
15
↘
14
↘
10
↘
8
1200m
↑
3
↑
3
↗
3
→
4
→
6
→
8
↘
9
↘
10
↘
12
↘
13
↘
13
↘
10
↘
7
1000m
↖
4
↑
3
↑
3
↗
3
→
5
↘
7
↘
8
↘
9
↘
11
↘
12
↘
12
↘
10
↘
7
800mLAUNCH
↖
6
↖
5
↑
4
↗
2
↘
3
↘
5
↘
7
↘
8
↘
10
↘
12
↘
12
↓
10
↓
8
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) · 2026-04-09 · Data fetched on 8 Apr at 14:45
⚠️ This report is informational only. The final decision to fly always rests with the pilot on site.