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Rule Blue Hour

Podere Belvedere - Blue Hour - Tuscany

San Quirico d'Orcia, Tuscany, Italy

When city lights balance with the deep blue twilight sky

Currently

Real-time conditions
Cloud Cover100%
Moon Altitude-5.3°

Upcoming Opportunities

When all conditions match, PhotoWeather marks an opportunity window.

Times shown in Europe/Rome
blue-hour weather icon
Next opportunity
Good Blue Hour (clear) at Sunset
Podere Belvedere
Mon, Mar 16 · 18:38–18:49 · 1h window
Medium confidence
50%
🌉Blue Hour Quality66.6%
Cloud Cover: 1%
Moon Illumination: 8%
Moon Altitude: -25.1°

What this forecast looks for

Plain-language explanation from the rule

This forecast tracks the magical twilight conditions that transform Tuscany's historic cities and hilltop villages into glowing jewels. We combine cloud cover, visibility, and atmospheric clarity to predict optimal blue hour conditions for urban and architectural photography.

Tuscany's medieval and Renaissance cities take on extraordinary beauty during the blue hour—the period just after sunset when electric lights glow warm against deep blue skies. Hilltop towns perched on ridges become islands of light, while the region's famous towers and domes stand silhouetted against colorful twilight.

What makes Tuscany special for blue-hour photography:

  • Historic architecture - Florence's Duomo, Siena's Piazza del Campo, and countless medieval structures
  • Hilltop villages - San Gimignano's towers, Montepulciano, Volterra glowing against twilight
  • Dramatic silhouettes - Cypress-lined roads and Val d'Orcia farmhouses against colored skies
  • Warm light contrast - Traditional streetlights and building illumination against cool blue sky

Florence's Duomo offers one of Europe's most spectacular blue hour compositions—the massive cathedral and Brunelleschi's dome illuminated against deepening blue sky, viewed from Piazzale Michelangelo. San Gimignano's medieval towers become golden beacons during twilight, their stone catching warm artificial light while the sky transitions through deep blues and purples. In the Val d'Orcia countryside, hilltop villages like Pienza glow from within during blue hour, their lights reflecting the region's historic charm. The timing window is brief—typically 20-30 minutes after sunset—when sky color and building lights are perfectly balanced. Clear to partly cloudy conditions work best, with some clouds adding color without obscuring the sky.

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72-hour requirements breakdown

What passed or failed, hour by hour
0matching hours in the next 92 hours
AND logic: all conditions required
Meets requirement
Misses requirement
Time
Europe/Rome
Blue Hour
Any
Blue Hour Quality
≥ 65.0%
Precipitation Chance
≤ 15.0%
Thu, Mar 12
05:004.1%87%
06:0046%93%
07:002.3%99%
08:002.3%100%
09:001.5%100%
10:001.5%100%
11:001.2%100%
12:001.1%100%
13:000.9%100%
14:001.4%79%
15:001.2%59%
16:001.3%39%
17:001.3%39%
18:0027%39%
19:0016%39%
20:003.9%42%
21:003.9%46%
22:003.9%50%
23:003.9%50%
Fri, Mar 13
24:003.9%50%
01:003.9%50%
02:003.9%34%
03:006.9%19%
04:003.9%3.5%
05:004.4%15%
06:0034%26%
07:002.3%38%
08:002.8%47%
09:002.8%57%
10:003.3%67%
11:003.2%70%
12:003.2%73%
13:003.1%76%
14:003%50%
15:002.6%25%
16:002.3%0%
17:002.7%0%
18:0052%0%
19:0034%0%
20:0010%0%
21:0010%0%
22:008.8%0%
23:0010%0%
Sat, Mar 14
24:0010%0%
01:0010%0%
02:008.8%0%
03:008.7%0%
04:008.6%0.001%
05:0057%19%
06:0046%37%
07:002.3%56%
08:002.5%60%
09:002.5%64%
10:002.7%69%
11:002.6%64%
12:001.8%60%
13:002.2%56%
14:002%38%
15:002%19%
16:002.7%0%
17:002.6%13%
18:0048%26%
19:0028%39%
20:006.9%38%
21:006.9%36%
22:006.9%35%
23:004%40%
Sun, Mar 15
24:004%45%
01:006.9%50%
02:004%40%
03:003.9%30%
04:004%20%
05:0046%13%
06:0046%6.7%
07:002.3%0%
08:002.4%7.4%
09:002.4%15%
10:002.4%22%
11:002.4%23%
12:002.4%25%
13:002.2%26%
14:002.2%17%
15:001.9%8.7%
16:001.9%0%
17:002.2%0%
18:0044%0%
19:0026%0%
20:006.6%0%
21:006.7%0%
22:007.1%0%
23:007.4%0%
Mon, Mar 16
24:007.9%0%
How to read: colored cells show whether each predicate requirement is met; highlighted rows mean the full rule matched (an opportunity).

What does Blue Hour Quality mean?

Inputs that drive the score

This derived score summarizes multiple raw weather signals. The table below shows the supporting inputs hour by hour, so you can see what's pushing the score up or down.

Time
Europe/Rome
Blue Hour
High Clouds
%
Low Clouds
%
Mid-Level Clouds
%
Relative Humidity
%
Solar Elevation
°
Total Cloud Coverage
%
Visibility
m
Wind Speed
m/s
Fri, Mar 13 Sunrise 06:29 Sunset 18:17
03:00
- 81% 13% 100% 92% -37° 100% 24135m 1.1m/s
04:00
- 92% 37% 99% 93% -27° 100% 24134m 1.3m/s
05:00
- 62% 63% 53% 93% -17° 70% 24135m 1.3m/s
06:00
- 10% 56% 13% 93% -6.2° 56% 24135m 1.3m/s
07:00
- 1% 37% 5% 93% 4.9° 37% 24134m 1.3m/s
08:00
- 0% 20% 5% 88% 15° 20% 24135m 1.2m/s
09:00
- 0% 27% 3% 81% 25° 27% 24134m 1.5m/s
10:00
- 0% 12% 5% 74% 34° 12% 24116m 1.6m/s
11:00
- 0% 6% 4% 68% 40° 6% 16867m 1.8m/s
12:00
- 0% 16% 5% 64% 44° 16% 13619m 1.8m/s
13:00
- 0% 20% 4% 63% 43° 20% 10761m 1.2m/s
14:00
- 0% 22% 3% 63% 39° 22% 9918m 0.55m/s
15:00
- 0% 32% 22% 64% 32° 34% 10293m 1.3m/s
16:00
- 0% 30% 17% 72% 23° 36% 10971m 2.2m/s
17:00
- 0% 5% 4% 82% 13° 5% 13130m 2m/s
18:00
- 0% 11% 21% 87% 2.6° 21% 18271m 1.6m/s
19:00
- 0% 7% 5% 90% -8.6° 7% 24135m 1.7m/s
20:00
- 0% 5% 5% 91% -19° 5% 24135m 1.6m/s
21:00
- 0% 5% 2% 91% -30° 5% 24135m 1.3m/s
22:00
- 0% 5% 0% 91% -39° 5% 24134m 1.1m/s
23:00
- 5% 5% 0% 91% -46° 5% 24134m 1.2m/s
Sat, Mar 14 Sunrise 06:29 Sunset 18:17
24:00
- 5% 4% 0% 91% -49° 5% 24134m 1.2m/s
01:00
- 5% 3% 5% 91% -49° 5% 24135m 1.1m/s
02:00
- 5% 3% 5% 90% -44° 5% 24135m 1.3m/s
03:00
- 5% 1% 6% 89% -37° 6% 24135m 1.3m/s
04:00
- 5% 2% 12% 89% -27° 12% 24135m 1.2m/s
05:00
- 8% 1% 5% 89% -17° 8% 24134m 1.3m/s
06:00
- 88% 1% 87% 88% -5.8° 92% 24134m 1.5m/s
07:00
- 100% 0% 100% 88% 5.2° 100% 24135m 1.7m/s
08:00
- 100% 0% 99% 85% 16° 100% 24134m 1m/s
09:00
- 100% 2% 100% 78% 26° 100% 24135m 0.48m/s
10:00
- 100% 8% 100% 72% 34° 100% 24135m 1.4m/s
11:00
- 100% 13% 98% 66% 41° 100% 24134m 2.7m/s
12:00
- 37% 44% 90% 63% 44° 90% 24135m 3.7m/s
13:00
- 99% 45% 42% 63% 44° 99% 24134m 4.4m/s
14:00
- 100% 26% 40% 66% 40° 100% 24135m 4.6m/s
15:00
- 100% 41% 85% 66% 32° 100% 24135m 4.5m/s
16:00
- 61% 14% 33% 69% 23° 61% 24135m 4.1m/s
17:00
- 100% 4% 100% 74% 13° 100% 24134m 3.5m/s
18:00
- 88% 1% 100% 82% 2.8° 100% 24135m 2.3m/s
19:00
- 88% 2% 93% 86% -8.4° 94% 24134m 1.8m/s
20:00
- 69% 1% 100% 87% -19° 100% 24134m 1.7m/s
21:00
- 100% 5% 100% 86% -29° 100% 24135m 1.3m/s
22:00
- 72% 5% 100% 87% -38° 100% 24135m 1.5m/s
23:00
- 87% 21% 100% 87% -45° 100% 24134m 1.7m/s
Sun, Mar 15 Sunrise 06:27 Sunset 18:18
24:00
- 100% 30% 100% 88% -49° 100% 24135m 1.6m/s
01:00
- 100% 4% 100% 90% -48° 100% 24134m 1.7m/s
02:00
- 100% 22% 100% 92% -44° 100% 24135m 1.7m/s
03:00
- 100% 38% 100% 90% -36° 100% 24135m 1.7m/s
04:00
- 100% 18% 100% 89% -27° 100% 24135m 1.5m/s
05:00
- 100% 6% 100% 90% -16° 100% 24134m 1.8m/s
06:00
- 100% 0% 99% 92% -5.5° 100% 24135m 1.9m/s
07:00
- 100% 0% 100% 91% 5.5° 100% 24135m 1.8m/s
08:00
- 86% 0% 98% 83% 16° 98% 24135m 3m/s
09:00
- 71% 1% 96% 74% 26° 96% 24135m 4.2m/s
10:00
- 57% 1% 95% 65% 35° 95% 24135m 5.3m/s
11:00
- 71% 1% 72% 72% 41° 96% 24135m 4.4m/s
12:00
- 84% 0% 49% 79% 45° 97% 24135m 3.4m/s
13:00
- 98% 0% 27% 85% 44° 98% 24135m 2.4m/s
14:00
- 98% 0% 21% 87% 40° 98% 24135m 2.4m/s
15:00
- 98% 0% 15% 88% 33° 98% 24135m 2.3m/s
16:00
- 98% 0% 8% 89% 24° 98% 24135m 2.3m/s
17:00
- 99% 0% 22% 91% 14° 99% 24135m 2.3m/s
18:00
- 99% 0% 35% 92% 99% 24135m 2.3m/s
19:00
- 100% 0% 49% 93% -8.1° 100% 24135m 2.3m/s
20:00
- 88% 1% 50% 93% -19° 89% 24135m 2.4m/s
21:00
- 76% 2% 51% 94% -29° 78% 24135m 2.6m/s
22:00
- 63% 3% 52% 94% -38° 67% 24135m 2.8m/s
23:00
- 48% 2% 50% 91% -45° 60% 24135m 3.3m/s
Mon, Mar 16 Sunrise 06:26 Sunset 18:19
24:00
- 33% 1% 48% 89% -48° 53% 24135m 3.8m/s
01:00
- 18% 1% 46% 86% -48° 46% 24135m 4.3m/s
02:00
- 37% 6% 62% 80% -43° 63% 24135m 4.7m/s
How to read: these inputs help produce the derived score; they are not requirements by themselves.

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