Rank 94 · Singapore

Singapore

Singapore · metro
5.5
HECI score
D
Class D
Marginal

Component breakdown

Air Quality
PM2.5 as US AQI, annual means over the window
6.5
Fair
Climate
Apparent temperature, 18-24°C optimal
2.4
Severe
Wind
Daily maximum gusts, calm is comfortable
9.4
Optimal
UV Safety
Hazardous UV peaks penalized, low UV is not
6.5
Fair
Day-Night Swing
Daily max-min gap, mild swings score high
3.1
Poor
Seasons
Distinct but gentle seasons score highest
7.8
Good
Sunlight
Annual sunshine hours
8.4
Good
Rainfall
Volume and year-to-year reliability
4.4
Poor
Disaster Risk
Recorded events, 3 yr / 50 km
9.4
Optimal

Goldilocks curve

Cold18-24°CHot

Singapore sits on the hot slope: mean feels-like 31.8°C.

Air quality source

Ground monitor

This city's air quality is measured by a real monitoring station: OpenAQ ground monitor (5.9km).

Coordinates1.3521, 103.8198
Data window10y
Updated7/13/2026
Sources: Open-Meteo, OpenAQ ground monitor (5.9km), USGS Earthquakes, NOAA IBTrACS, Smithsonian GVP, GloFAS (Copernicus)