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Rule Blue Hour

Cappella della Madonna di Vitaleta - Blue Hour - Tuscany

San Quirico d'Orcia, Tuscany, Italy

When city lights balance with the deep blue twilight sky

No opportunities right now
Here’s what usually blocks matches

No Blue Hour opportunities in the next 14 days

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Rule requirements (key thresholds)
Blue Hour · Any Blue Hour Quality · ≥ 65.0% Precipitation Chance · ≤ 15.0%

Tip: Scroll down to the 72-hour table to see exactly which condition fails hour by hour.

Most common blockers (next 72 hours)
Blue Hour Quality 97% failing
Blue Hour 92% failing
Precipitation Chance 13% failing

Currently

Real-time conditions
Cloud Cover5%
Moon Altitude40.9°

Upcoming Opportunities

When all conditions match, PhotoWeather marks an opportunity window.

Times shown in Europe/Rome

No opportunities in the next 10 days

See the blocker timeline below to understand which conditions are preventing matches.

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 95 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%
Sat, Feb 21
20:0012%0%
21:0012%0%
22:0011%0%
23:0011%0%
Sun, Feb 22
24:0011%0%
01:0011%0%
02:0011%0%
03:0011%0%
04:0011%0%
05:0011%0%
06:0071%0%
07:0013%0%
08:003.1%0%
09:003.7%0%
10:003.9%0%
11:002.9%0%
12:003%0%
13:002.3%0%
14:004%0%
15:004%0%
16:003.9%0%
17:003.7%0%
18:0071%0%
19:0010%0%
20:0010%0%
21:009.7%0%
22:0010%0%
23:0011%0%
Mon, Feb 23
24:0011%0%
01:007%0%
02:004.5%0%
03:005.4%0%
04:005.3%0%
05:003.9%0%
06:0027%0%
07:0014%0%
08:002.3%2.3%
09:002.6%4.7%
10:003.7%7%
11:003.7%18%
12:003.3%28%
13:003.8%39%
14:002.5%27%
15:002.5%15%
16:002.6%3.5%
17:002.9%2.3%
18:0051%1.2%
19:008.2%0%
20:0011%0%
21:0010%0%
22:008.6%0%
23:008.5%0%
Tue, Feb 24
24:0010%0%
01:008.7%0%
02:008.6%0%
03:0010%0%
04:008.5%0%
05:0010%0%
06:0067%0%
07:003.3%0%
08:003.3%0%
09:003.5%0%
10:003.3%0%
11:003.3%0%
12:002.9%0%
13:002.6%0%
14:002.7%0%
15:002.4%0%
16:002.4%0%
17:001.7%0%
18:0045%0%
19:007%0%
20:007.3%0%
21:008.4%0%
22:0010%0%
23:0010%0%
Wed, Feb 25
24:0010%0%
01:0010%0%
02:0010%0%
03:0011%0%
04:0011%0%
05:0010%0%
06:0066%0%
07:003.5%0%
08:003%2.3%
09:002.4%4.7%
10:002.1%7%
11:001.8%18%
12:001.8%28%
13:001.6%39%
14:001.6%26%
15:001.7%13%
16:001.8%0%
17:002.2%0%
18:0046%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
Sun, Feb 22 Sunrise 07:01 Sunset 17:53
20:00
- 5% 0% 0% 88% -24° 5% 24134m 1.8m/s
21:00
- 5% 0% 0% 88% -34° 5% 24134m 2m/s
22:00
- 5% 0% 0% 86% -44° 5% 24135m 1.7m/s
23:00
- 5% 0% 5% 82% -52° 5% 24135m 1.6m/s
Mon, Feb 23 Sunrise 07:01 Sunset 17:53
24:00
- 16% 1% 5% 82% -56° 16% 24135m 1.2m/s
01:00
- 5% 31% 17% 86% -56° 34% 24135m 1.3m/s
02:00
- 53% 62% 52% 88% -51° 67% 24135m 1.4m/s
03:00
- 97% 60% 62% 89% -43° 97% 22797m 1.3m/s
04:00
- 93% 60% 93% 90% -33° 93% 22738m 1.2m/s
05:00
- 99% 55% 100% 91% -23° 100% 22819m 1.5m/s
06:00
- 100% 18% 100% 92% -12° 100% 24135m 1.5m/s
07:00
- 100% 1% 100% 93% -0.29° 100% 24134m 1.5m/s
08:00
- 100% 0% 100% 89% 9.8° 100% 24135m 1m/s
09:00
- 60% 0% 58% 81% 19° 73% 24134m 0.59m/s
10:00
- 5% 0% 0% 72% 28° 5% 24135m 0.93m/s
11:00
- 5% 0% 5% 65% 34° 5% 24134m 1.3m/s
12:00
- 40% 0% 5% 60% 37° 40% 24134m 1.4m/s
13:00
- 24% 3% 0% 57% 37° 24% 24135m 1.7m/s
14:00
- 100% 18% 4% 57% 33° 100% 24134m 1.8m/s
15:00
- 100% 38% 9% 59% 27° 100% 24135m 1.8m/s
16:00
- 0% 27% 25% 62% 18° 46% 24135m 1.5m/s
17:00
- 8% 27% 0% 71% 8.8° 29% 24134m 1.5m/s
18:00
- 12% 27% 0% 78% -1.5° 34% 24134m 1.3m/s
19:00
- 34% 26% 0% 80% -13° 36% 24134m 1.1m/s
20:00
- 4% 1% 0% 83% -23° 5% 24135m 1.3m/s
21:00
- 4% 1% 0% 88% -34° 4% 24135m 0.09m/s
22:00
- 5% 9% 0% 90% -44° 12% 24135m 0.3m/s
23:00
- 5% 6% 0% 91% -52° 9% 24135m 0.75m/s
Tue, Feb 24 Sunrise 06:59 Sunset 17:54
24:00
- 5% 0% 0% 91% -56° 5% 24134m 0.64m/s
01:00
- 3% 5% 0% 92% -56° 6% 24135m 0.45m/s
02:00
- 3% 5% 0% 93% -51° 7% 24134m 0.25m/s
03:00
- 4% 0% 0% 93% -43° 4% 24134m 0.51m/s
04:00
- 9% 0% 0% 93% -33° 9% 24135m 0.69m/s
05:00
- 5% 0% 0% 93% -22° 5% 24135m 0.72m/s
06:00
- 5% 0% 0% 92% -11° 5% 24135m 0.8m/s
07:00
- 5% 0% 0% 92% 0.1° 5% 24135m 0.75m/s
08:00
- 5% 0% 0% 90% 10° 5% 24134m 0.49m/s
09:00
- 5% 0% 0% 81% 20° 5% 24134m 0.34m/s
10:00
- 5% 0% 0% 74% 28° 5% 24135m 0.66m/s
11:00
- 6% 2% 4% 68% 34° 6% 24135m 1.4m/s
12:00
- 56% 9% 5% 64% 37° 57% 24134m 1.7m/s
13:00
- 80% 13% 13% 62% 37° 80% 24135m 1.7m/s
14:00
- 54% 16% 20% 60% 33° 56% 24134m 1.5m/s
15:00
- 88% 26% 58% 60% 27° 88% 24135m 1.1m/s
16:00
- 100% 39% 100% 62% 19° 100% 24135m 0.71m/s
17:00
- 17% 40% 79% 72% 9.1° 81% 24134m 0.22m/s
18:00
- 5% 45% 6% 78% -1.3° 45% 24135m 0.25m/s
19:00
- 3% 41% 0% 81% -12° 41% 24135m 0.64m/s
20:00
- 0% 38% 0% 84% -23° 38% 24134m 0.49m/s
21:00
- 0% 10% 0% 87% -34° 10% 24134m 0.2m/s
22:00
- 0% 0% 0% 90% -43° 0% 24134m 0.22m/s
23:00
- 0% 0% 0% 91% -51° 0% 24134m 0.45m/s
Wed, Feb 25 Sunrise 06:58 Sunset 17:56
24:00
- 0% 0% 0% 91% -56° 0% 24134m 0.64m/s
01:00
- 0% 0% 0% 91% -55° 0% 24135m 0.9m/s
02:00
- 0% 0% 0% 86% -50° 0% 24135m 1.1m/s
03:00
- 0% 0% 0% 81% -42° 0% 24135m 1.3m/s
04:00
- 0% 0% 0% 75% -33° 0% 24135m 1.5m/s
05:00
- 0% 5% 0% 71% -22° 5% 24135m 1.5m/s
06:00
- 0% 10% 0% 67% -11° 10% 24135m 1.4m/s
07:00
- 0% 16% 0% 63% 0.33° 16% 24135m 1.3m/s
08:00
- 0% 34% 0% 63% 10° 34% 24135m 1.1m/s
09:00
- 0% 53% 0% 63% 20° 53% 24135m 0.87m/s
10:00
- 0% 72% 0% 63% 28° 72% 24135m 0.64m/s
11:00
- 0% 79% 0% 68% 34° 79% 24135m 0.72m/s
12:00
- 0% 86% 0% 73% 38° 86% 24135m 0.8m/s
13:00
- 0% 92% 0% 78% 37° 92% 24135m 0.87m/s
14:00
- 2% 81% 0% 79% 34° 81% 24135m 0.88m/s
15:00
- 3% 71% 0% 81% 27° 71% 24135m 0.88m/s
16:00
- 5% 60% 0% 82% 19° 60% 24135m 0.88m/s
17:00
- 5% 47% 0% 84% 9.3° 48% 24135m 0.96m/s
18:00
- 5% 35% 0% 86% -1° 36% 24135m 1m/s
19:00
- 5% 22% 0% 87% -12° 25% 24135m 1.1m/s
How to read: these inputs help produce the derived score; they are not requirements by themselves.

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