Nearly 400 neonatal deaths are attributed to heatwaves annually — but the true burden, from preterm birth and direct hyperthermia, is orders of magnitude larger. NeoHeat makes it visible, city by city, ward by ward.
Kinshasa · Niamey · Lagos · Bamako · Nairobi · Luanda · Abidjan · Kano · +35 more
3D hexagonal city columns show heat-attributable deaths across 43 African cities. Fly to any city, compare scenarios and years, all in real time.
Open map →Neonates cannot thermoregulate for the first 3 weeks. Every degree above 32°C exponentially increases mortality risk. We model this with a continent-specific beta coefficient derived from Chersich et al. (2020).
Maternal heat stress elevates preterm birth risk by ~5% per degree above 29°C. Excess preterm births then face a composite NMR of 150/1000 — up to 5× the city baseline. This is the hidden majority of the heat burden.
Heat raises stillbirth risk by ~8% per degree (Chersich 2020). We track this separately from neonatal mortality — making the full reproductive cost of extreme heat visible to planners and clinicians.
Niamey sits at 13°N with already extreme summer temperatures. Under high-emission trajectories, Tx5d reaches 43°C+ by 2050 — generating 138 heatwave days per year above the neonatal stress threshold. The preterm birth pathway alone accounts for 405 deaths/yr, entirely invisible in standard climate mortality statistics.