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 19
Total: 6308 wh/m2Hours08:0056 w/m2
09:00277 w/m2
10:00499 w/m2
11:00684 w/m2
12:00814 w/m2
13:00880 w/m2
14:00874 w/m2
15:00800 w/m2
16:00661 w/m2
17:00475 w/m2
18:00251 w/m2
19:0037 w/m2
Tomorrow, September 20
Total: 6171 wh/m2Hours08:0054 w/m2
09:00264 w/m2
10:00478 w/m2
11:00658 w/m2
12:00771 w/m2
13:00873 w/m2
14:00873 w/m2
15:00797 w/m2
16:00656 w/m2
17:00467 w/m2
18:00246 w/m2
19:0034 w/m2
Saturday, September 21
Total: 6208 wh/m2Hours08:0054 w/m2
09:00274 w/m2
10:00497 w/m2
11:00679 w/m2
12:00805 w/m2
13:00861 w/m2
14:00858 w/m2
15:00788 w/m2
16:00652 w/m2
17:00467 w/m2
18:00242 w/m2
19:0031 w/m2
Sunday, September 22
Total: 6238 wh/m2Hours08:0053 w/m2
09:00273 w/m2
10:00496 w/m2
11:00681 w/m2
12:00809 w/m2
13:00872 w/m2
14:00869 w/m2
15:00795 w/m2
16:00657 w/m2
17:00465 w/m2
18:00239 w/m2
19:0029 w/m2
Monday, September 23
Total: 6218 wh/m2Hours08:0052 w/m2
09:00272 w/m2
10:00495 w/m2
11:00680 w/m2
12:00810 w/m2
13:00873 w/m2
14:00868 w/m2
15:00793 w/m2
16:00654 w/m2
17:00461 w/m2
18:00234 w/m2
19:0026 w/m2
Tuesday, September 24
Total: 6167 wh/m2Hours08:0050 w/m2
09:00270 w/m2
10:00492 w/m2
11:00676 w/m2
12:00804 w/m2
13:00865 w/m2
14:00862 w/m2
15:00788 w/m2
16:00649 w/m2
17:00457 w/m2
18:00230 w/m2
19:0024 w/m2
Wednesday, September 25
Total: 6086 wh/m2Hours08:0049 w/m2
09:00266 w/m2
10:00487 w/m2
11:00669 w/m2
12:00797 w/m2
13:00859 w/m2
14:00853 w/m2
15:00777 w/m2
16:00638 w/m2
17:00447 w/m2
18:00223 w/m2
19:0021 w/m2
Thursday, September 26
Total: 6049 wh/m2Hours08:0047 w/m2
09:00263 w/m2
10:00483 w/m2
11:00666 w/m2
12:00795 w/m2
13:00858 w/m2
14:00847 w/m2
15:00772 w/m2
16:00634 w/m2
17:00445 w/m2
18:00220 w/m2
19:0019 w/m2
Friday, September 27
Total: 6025 wh/m2Hours08:0047 w/m2
09:00262 w/m2
10:00482 w/m2
11:00664 w/m2
12:00791 w/m2
13:00854 w/m2
14:00848 w/m2
15:00772 w/m2
16:00632 w/m2
17:00440 w/m2
18:00216 w/m2
19:0017 w/m2
Saturday, September 28
Total: 5947 wh/m2Hours08:0045 w/m2
09:00257 w/m2
10:00475 w/m2
11:00655 w/m2
12:00783 w/m2
13:00846 w/m2
14:00839 w/m2
15:00764 w/m2
16:00624 w/m2
17:00434 w/m2
18:00210 w/m2
19:0015 w/m2
Sunday, September 29
Total: 6012 wh/m2Hours08:0044 w/m2
09:00260 w/m2
10:00481 w/m2
11:00665 w/m2
12:00794 w/m2
13:00858 w/m2
14:00850 w/m2
15:00772 w/m2
16:00630 w/m2
17:00436 w/m2
18:00209 w/m2
19:0013 w/m2
Monday, September 30
Total: 5202 wh/m2Hours08:0043 w/m2
09:00260 w/m2
10:00482 w/m2
11:00665 w/m2
12:00793 w/m2
13:00855 w/m2
14:00820 w/m2
15:00650 w/m2
16:00345 w/m2
17:00206 w/m2
18:0080 w/m2
19:003 w/m2
Tuesday, October 1
Total: 5361 wh/m2Hours08:0017 w/m2
09:00133 w/m2
10:00297 w/m2
11:00530 w/m2
12:00719 w/m2
13:00823 w/m2
14:00827 w/m2
15:00758 w/m2
16:00620 w/m2
17:00427 w/m2
18:00200 w/m2
19:0010 w/m2
Wednesday, October 2
Total: 5509 wh/m2Hours08:0041 w/m2
09:00256 w/m2
10:00476 w/m2
11:00656 w/m2
12:00778 w/m2
13:00833 w/m2
14:00790 w/m2
15:00650 w/m2
16:00444 w/m2
17:00384 w/m2
18:00193 w/m2
19:008 w/m2
Thursday, October 3
Total: 5815 wh/m2Hours08:0039 w/m2
09:00244 w/m2
10:00432 w/m2
11:00641 w/m2
12:00783 w/m2
13:00848 w/m2
14:00838 w/m2
15:00758 w/m2
16:00614 w/m2
17:00419 w/m2
18:00192 w/m2
19:007 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.
