Solar radiation in Alton / St. Louis Regional 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, April 2
Total: 1928 wh/m2Hours07:005 w/m2
08:0066 w/m2
09:00177 w/m2
10:00200 w/m2
11:00251 w/m2
12:00225 w/m2
13:00213 w/m2
14:00206 w/m2
15:00185 w/m2
16:00149 w/m2
17:00134 w/m2
18:00106 w/m2
19:0011 w/m2
Tomorrow, April 3
Total: 3793 wh/m2Hours07:0010 w/m2
08:00174 w/m2
09:00301 w/m2
10:00359 w/m2
11:00388 w/m2
12:00438 w/m2
13:00486 w/m2
14:00471 w/m2
15:00446 w/m2
16:00380 w/m2
17:00237 w/m2
18:0095 w/m2
19:008 w/m2
Friday, April 4
Total: 3129 wh/m2Hours07:007 w/m2
08:00104 w/m2
09:00212 w/m2
10:00301 w/m2
11:00376 w/m2
12:00409 w/m2
13:00409 w/m2
14:00396 w/m2
15:00354 w/m2
16:00287 w/m2
17:00183 w/m2
18:0083 w/m2
19:008 w/m2
Saturday, April 5
Total: 3247 wh/m2Hours07:006 w/m2
08:0088 w/m2
09:00192 w/m2
10:00292 w/m2
11:00364 w/m2
12:00426 w/m2
13:00444 w/m2
14:00429 w/m2
15:00384 w/m2
16:00312 w/m2
17:00201 w/m2
18:0098 w/m2
19:0011 w/m2
Sunday, April 6
Total: 5218 wh/m2Hours07:0010 w/m2
08:00126 w/m2
09:00276 w/m2
10:00419 w/m2
11:00549 w/m2
12:00647 w/m2
13:00699 w/m2
14:00700 w/m2
15:00645 w/m2
16:00537 w/m2
17:00384 w/m2
18:00200 w/m2
19:0026 w/m2
Monday, April 7
Total: 6509 wh/m2Hours07:0019 w/m2
08:00203 w/m2
09:00412 w/m2
10:00596 w/m2
11:00740 w/m2
12:00830 w/m2
13:00861 w/m2
14:00832 w/m2
15:00744 w/m2
16:00604 w/m2
17:00422 w/m2
18:00217 w/m2
19:0029 w/m2
Tuesday, April 8
Total: 6605 wh/m2Hours07:0022 w/m2
08:00208 w/m2
09:00417 w/m2
10:00603 w/m2
11:00747 w/m2
12:00839 w/m2
13:00872 w/m2
14:00843 w/m2
15:00755 w/m2
16:00614 w/m2
17:00431 w/m2
18:00223 w/m2
19:0031 w/m2
Wednesday, April 9
Total: 6490 wh/m2Hours07:0025 w/m2
08:00207 w/m2
09:00413 w/m2
10:00598 w/m2
11:00738 w/m2
12:00828 w/m2
13:00858 w/m2
14:00828 w/m2
15:00738 w/m2
16:00600 w/m2
17:00415 w/m2
18:00212 w/m2
19:0030 w/m2
Thursday, April 10
Total: 6546 wh/m2Hours07:0026 w/m2
08:00207 w/m2
09:00412 w/m2
10:00598 w/m2
11:00740 w/m2
12:00831 w/m2
13:00863 w/m2
14:00834 w/m2
15:00746 w/m2
16:00606 w/m2
17:00426 w/m2
18:00223 w/m2
19:0034 w/m2
Friday, April 11
Total: 6715 wh/m2Hours07:0031 w/m2
08:00222 w/m2
09:00430 w/m2
10:00614 w/m2
11:00757 w/m2
12:00848 w/m2
13:00879 w/m2
14:00849 w/m2
15:00761 w/m2
16:00620 w/m2
17:00437 w/m2
18:00230 w/m2
19:0037 w/m2
Saturday, April 12
Total: 6755 wh/m2Hours07:0034 w/m2
08:00226 w/m2
09:00434 w/m2
10:00618 w/m2
11:00761 w/m2
12:00851 w/m2
13:00883 w/m2
14:00853 w/m2
15:00763 w/m2
16:00622 w/m2
17:00439 w/m2
18:00232 w/m2
19:0039 w/m2
Sunday, April 13
Total: 5854 wh/m2Hours07:0037 w/m2
08:00229 w/m2
09:00436 w/m2
10:00620 w/m2
11:00762 w/m2
12:00853 w/m2
13:00885 w/m2
14:00817 w/m2
15:00597 w/m2
16:00203 w/m2
17:00229 w/m2
18:00154 w/m2
19:0032 w/m2
Monday, April 14
Total: 6852 wh/m2Hours07:0041 w/m2
08:00236 w/m2
09:00444 w/m2
10:00627 w/m2
11:00769 w/m2
12:00858 w/m2
13:00889 w/m2
14:00859 w/m2
15:00770 w/m2
16:00629 w/m2
17:00447 w/m2
18:00239 w/m2
19:0044 w/m2
Tuesday, April 15
Total: 6891 wh/m2Hours07:0044 w/m2
08:00240 w/m2
09:00448 w/m2
10:00630 w/m2
11:00772 w/m2
12:00861 w/m2
13:00892 w/m2
14:00862 w/m2
15:00773 w/m2
16:00632 w/m2
17:00449 w/m2
18:00242 w/m2
19:0046 w/m2
Wednesday, April 16
Total: 2523 wh/m2Hours07:0046 w/m2
08:00213 w/m2
09:00299 w/m2
10:00158 w/m2
11:00213 w/m2
12:00238 w/m2
13:00246 w/m2
14:00237 w/m2
15:00213 w/m2
16:00190 w/m2
17:00248 w/m2
18:00181 w/m2
19:0041 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.
