Solar radiation in Washington DC, Washington-Dulles International Airport 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: 3046 wh/m2Hours08:0056 w/m2
09:00140 w/m2
10:00249 w/m2
11:00332 w/m2
12:00392 w/m2
13:00395 w/m2
14:00452 w/m2
15:00413 w/m2
16:00329 w/m2
17:00202 w/m2
18:0084 w/m2
19:002 w/m2
Tomorrow, September 17
Total: 2142 wh/m2Hours08:0046 w/m2
09:00109 w/m2
10:00181 w/m2
11:00247 w/m2
12:00298 w/m2
13:00294 w/m2
14:00318 w/m2
15:00267 w/m2
16:00201 w/m2
17:00125 w/m2
18:0055 w/m2
19:001 w/m2
Wednesday, September 18
Total: 3331 wh/m2Hours08:0060 w/m2
09:00165 w/m2
10:00286 w/m2
11:00388 w/m2
12:00443 w/m2
13:00476 w/m2
14:00460 w/m2
15:00407 w/m2
16:00332 w/m2
17:00220 w/m2
18:0092 w/m2
19:002 w/m2
Thursday, September 19
Total: 3575 wh/m2Hours08:0073 w/m2
09:00194 w/m2
10:00310 w/m2
11:00408 w/m2
12:00466 w/m2
13:00499 w/m2
14:00493 w/m2
15:00446 w/m2
16:00353 w/m2
17:00233 w/m2
18:0099 w/m2
19:001 w/m2
Friday, September 20
Total: 4979 wh/m2Hours08:00105 w/m2
09:00277 w/m2
10:00441 w/m2
11:00571 w/m2
12:00662 w/m2
13:00697 w/m2
14:00677 w/m2
15:00606 w/m2
16:00485 w/m2
17:00322 w/m2
18:00135 w/m2
19:001 w/m2
Saturday, September 21
Total: 4739 wh/m2Hours08:0095 w/m2
09:00257 w/m2
10:00412 w/m2
11:00541 w/m2
12:00624 w/m2
13:00665 w/m2
14:00652 w/m2
15:00586 w/m2
16:00468 w/m2
17:00310 w/m2
18:00128 w/m2
19:001 w/m2
Sunday, September 22
Total: 4962 wh/m2Hours08:00116 w/m2
09:00306 w/m2
10:00474 w/m2
11:00598 w/m2
12:00666 w/m2
13:00679 w/m2
14:00637 w/m2
15:00582 w/m2
16:00467 w/m2
17:00311 w/m2
18:00126 w/m2
Monday, September 23
Total: 4862 wh/m2Hours08:00107 w/m2
09:00287 w/m2
10:00448 w/m2
11:00572 w/m2
12:00653 w/m2
13:00682 w/m2
14:00656 w/m2
15:00582 w/m2
16:00460 w/m2
17:00298 w/m2
18:00117 w/m2
Tuesday, September 24
Total: 5071 wh/m2Hours08:00109 w/m2
09:00298 w/m2
10:00468 w/m2
11:00602 w/m2
12:00688 w/m2
13:00714 w/m2
14:00687 w/m2
15:00607 w/m2
16:00475 w/m2
17:00306 w/m2
18:00117 w/m2
Wednesday, September 25
Total: 4903 wh/m2Hours08:00101 w/m2
09:00280 w/m2
10:00446 w/m2
11:00579 w/m2
12:00661 w/m2
13:00694 w/m2
14:00667 w/m2
15:00593 w/m2
16:00468 w/m2
17:00301 w/m2
18:00113 w/m2
Thursday, September 26
Total: 5137 wh/m2Hours08:00107 w/m2
09:00301 w/m2
10:00479 w/m2
11:00615 w/m2
12:00701 w/m2
13:00731 w/m2
14:00700 w/m2
15:00614 w/m2
16:00477 w/m2
17:00302 w/m2
18:00110 w/m2
Friday, September 27
Total: 1777 wh/m2Hours08:00103 w/m2
09:00261 w/m2
10:00312 w/m2
11:00159 w/m2
12:00181 w/m2
13:00189 w/m2
14:00182 w/m2
15:00159 w/m2
16:00123 w/m2
17:0078 w/m2
18:0030 w/m2
Saturday, September 28
Total: 5261 wh/m2Hours08:00106 w/m2
09:00306 w/m2
10:00489 w/m2
11:00632 w/m2
12:00722 w/m2
13:00753 w/m2
14:00722 w/m2
15:00632 w/m2
16:00489 w/m2
17:00305 w/m2
18:00105 w/m2
Sunday, September 29
Total: 5215 wh/m2Hours08:00103 w/m2
09:00303 w/m2
10:00486 w/m2
11:00628 w/m2
12:00718 w/m2
13:00749 w/m2
14:00717 w/m2
15:00627 w/m2
16:00484 w/m2
17:00300 w/m2
18:00100 w/m2
Monday, September 30
Total: 2755 wh/m2Hours08:0073 w/m2
09:00233 w/m2
10:00394 w/m2
11:00538 w/m2
12:00522 w/m2
13:00410 w/m2
14:00196 w/m2
15:00171 w/m2
16:00120 w/m2
17:0074 w/m2
18:0024 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.
