6.8
HECI score
D
Class D
Marginal
Component breakdown
Air Quality
PM2.5 as US AQI, annual means over the window
7.8
Good
Climate
Apparent temperature, 18-24°C optimal
5.1
Fair
Wind
Daily maximum gusts, calm is comfortable
7.9
Good
UV Safety
Hazardous UV peaks penalized, low UV is not
9.2
Optimal
Day-Night Swing
Daily max-min gap, mild swings score high
9.4
Optimal
Seasons
Distinct but gentle seasons score highest
3.3
Poor
Sunlight
Annual sunshine hours
7.0
Good
Rainfall
Volume and year-to-year reliability
8.2
Good
Disaster Risk
Recorded events, 3 yr / 50 km
9.7
Optimal
Goldilocks curve
Cold18-24°CHot
Chicago sits on the cold slope: mean feels-like 8.1°C.
Air quality source
Ground monitor
This city's air quality is measured by a real monitoring station: OpenAQ ground monitor (5.0km).
Coordinates41.848, -87.6352
Data window10y
Updated7/13/2026
Sources: Open-Meteo, OpenAQ ground monitor (5.0km), USGS Earthquakes, NOAA IBTrACS, Smithsonian GVP, GloFAS (Copernicus)