Solar Irradiance Data: Chicago
Monthly average solar irradiance for 23 representative global locations — GHI, DNI, DHI, tilt irradiance, peak sun hours, clearness index, and temperature. TMY-style reference data for PV system design and solar energy analysis. Each location has 12 monthly records (month=1-12) plus one annual summary row (month=0).
| location | month | DHI kWh per m2 per day (kWh/m2/day) | DNI kWh per m2 per day (kWh/m2/day) | GHI kWh per m2 per day (kWh/m2/day) | avg temp C (C) | clearness index Kt | climate zone | latitude deg (deg) | longitude deg (deg) | peak sun hours (h/day) | tilt latitude kWh per m2 per day (kWh/m2/day) |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Chicago | 1 | 0.98 | 2.68 | 1.98 | -3.8 | 0.39 | continental | 41.9 | -87.6 | 1.98 | 2.88 |
| Chicago | 2 | 1.18 | 3.52 | 2.88 | -1.8 | 0.44 | continental | 41.9 | -87.6 | 2.88 | 3.68 |
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