What it means
Summer heat shows how hot the warm season can feel. This matters for comfort, activity, cooling costs, and health.
How we calculate it
We read warm season temperature patterns and give more comfort to places where heat is less extreme and more manageable.
Sources and freshness
NASA POWER, Open Meteo, NOAA, and public weather records.
Source periods vary by place. City pages show dated source context for the applicable measure when it is available.
Limitations
Seasonal patterns do not capture every heat wave, neighborhood microclimate, home cooling condition, or personal heat tolerance.