Solar radiation in Alton Solar radiation 15 days
In the following list by days you can know the forecast of the predicted solar radiation. To know the data hour by hour, click on the day that interests you. If you have a solar panel system, these data will be useful to predict the energy it will produce.
The unit of measurement for solar radiation is expressed in W/m2 (Watts per square meter).
Solar radiation
Today, September 16
Total: 4494 wh/m2Hours07:001 w/m2
08:0096 w/m2
09:00236 w/m2
10:00443 w/m2
11:00527 w/m2
12:00699 w/m2
13:00402 w/m2
14:00589 w/m2
15:00527 w/m2
16:00504 w/m2
17:00330 w/m2
18:00139 w/m2
19:001 w/m2
Tomorrow, September 17
Total: 5804 wh/m2Hours07:001 w/m2
08:00145 w/m2
09:00353 w/m2
10:00540 w/m2
11:00686 w/m2
12:00778 w/m2
13:00809 w/m2
14:00777 w/m2
15:00684 w/m2
16:00538 w/m2
17:00350 w/m2
18:00142 w/m2
19:001 w/m2
Wednesday, September 18
Total: 5764 wh/m2Hours07:001 w/m2
08:00143 w/m2
09:00350 w/m2
10:00538 w/m2
11:00683 w/m2
12:00775 w/m2
13:00805 w/m2
14:00773 w/m2
15:00680 w/m2
16:00533 w/m2
17:00345 w/m2
18:00137 w/m2
19:001 w/m2
Thursday, September 19
Total: 5729 wh/m2Hours07:001 w/m2
08:00141 w/m2
09:00348 w/m2
10:00535 w/m2
11:00681 w/m2
12:00772 w/m2
13:00803 w/m2
14:00770 w/m2
15:00676 w/m2
16:00529 w/m2
17:00340 w/m2
18:00133 w/m2
Friday, September 20
Total: 5677 wh/m2Hours07:001 w/m2
08:00138 w/m2
09:00345 w/m2
10:00532 w/m2
11:00676 w/m2
12:00767 w/m2
13:00797 w/m2
14:00764 w/m2
15:00671 w/m2
16:00523 w/m2
17:00335 w/m2
18:00128 w/m2
Saturday, September 21
Total: 5503 wh/m2Hours08:00130 w/m2
09:00330 w/m2
10:00512 w/m2
11:00656 w/m2
12:00748 w/m2
13:00781 w/m2
14:00746 w/m2
15:00652 w/m2
16:00506 w/m2
17:00322 w/m2
18:00120 w/m2
Sunday, September 22
Total: 5534 wh/m2Hours08:00131 w/m2
09:00335 w/m2
10:00518 w/m2
11:00662 w/m2
12:00751 w/m2
13:00781 w/m2
14:00749 w/m2
15:00656 w/m2
16:00510 w/m2
17:00323 w/m2
18:00118 w/m2
Monday, September 23
Total: 5517 wh/m2Hours08:00128 w/m2
09:00331 w/m2
10:00518 w/m2
11:00663 w/m2
12:00755 w/m2
13:00785 w/m2
14:00749 w/m2
15:00653 w/m2
16:00505 w/m2
17:00317 w/m2
18:00113 w/m2
Tuesday, September 24
Total: 5483 wh/m2Hours08:00126 w/m2
09:00328 w/m2
10:00514 w/m2
11:00659 w/m2
12:00751 w/m2
13:00781 w/m2
14:00747 w/m2
15:00651 w/m2
16:00503 w/m2
17:00314 w/m2
18:00109 w/m2
Wednesday, September 25
Total: 5412 wh/m2Hours08:00126 w/m2
09:00329 w/m2
10:00512 w/m2
11:00653 w/m2
12:00740 w/m2
13:00767 w/m2
14:00735 w/m2
15:00642 w/m2
16:00495 w/m2
17:00308 w/m2
18:00105 w/m2
Thursday, September 26
Total: 5412 wh/m2Hours08:00123 w/m2
09:00326 w/m2
10:00511 w/m2
11:00655 w/m2
12:00745 w/m2
13:00774 w/m2
14:00739 w/m2
15:00642 w/m2
16:00493 w/m2
17:00304 w/m2
18:00100 w/m2
Friday, September 27
Total: 5408 wh/m2Hours08:00122 w/m2
09:00327 w/m2
10:00514 w/m2
11:00657 w/m2
12:00746 w/m2
13:00774 w/m2
14:00738 w/m2
15:00642 w/m2
16:00491 w/m2
17:00301 w/m2
18:0096 w/m2
Saturday, September 28
Total: 5369 wh/m2Hours08:00120 w/m2
09:00325 w/m2
10:00511 w/m2
11:00654 w/m2
12:00743 w/m2
13:00770 w/m2
14:00734 w/m2
15:00637 w/m2
16:00487 w/m2
17:00296 w/m2
18:0092 w/m2
Sunday, September 29
Total: 4750 wh/m2Hours08:00117 w/m2
09:00322 w/m2
10:00508 w/m2
11:00651 w/m2
12:00739 w/m2
13:00766 w/m2
14:00711 w/m2
15:00498 w/m2
16:00120 w/m2
17:00232 w/m2
18:0086 w/m2
Monday, September 30
Total: 5286 wh/m2Hours08:00115 w/m2
09:00319 w/m2
10:00505 w/m2
11:00648 w/m2
12:00736 w/m2
13:00763 w/m2
14:00726 w/m2
15:00628 w/m2
16:00477 w/m2
17:00286 w/m2
18:0083 w/m2
To carry out the solar radiation forecast, the angle of incidence of solar radiation is taken into account, which depends, among others, on the declination, latitude, inclination and hour angle. The weather forecast is also taken into account, since, for example, on a cloudy day we would only have diffuse radiation, much less than direct radiation.
