Heat inequality becomes glaringly evident during a heatwave, raising questions about why certain suburbs suffer more intensely and what can be done to alleviate this disparity. The phenomenon isn’t limited to just one region; while western Sydney often serves as the poster child for heat inequality, similar patterns emerge in cities like Melbourne and Adelaide. In these areas, inland suburbs endure the brunt of the heat compared to their coastal neighbors.

Experts point to several contributing factors. One significant issue is the prevalence of “dark surfaces,” which absorb heat much like a hot pot of boiling water. These surfaces create a localized oven effect, substantially raising temperatures in urban areas.

The impact of these hotter conditions isn’t felt equally across all demographics. Particular groups are more vulnerable, including the elderly, individuals with chronic illnesses, and those without access to air conditioning. These factors often overlap, compounding the risk for those already at a disadvantage.

Addressing heat inequality requires a multifaceted approach, considering both the urban infrastructure that contributes to higher temperatures and the socio-economic factors that leave certain populations more exposed to extreme heat. The call to action is clear: we must find sustainable solutions to protect those most at risk in our communities.

Why does it matter?

“People who are older, people who have a chronic disease, often people who don’t have access to air conditioning, or all three of those things put together.”

“If we just think about the hospital cases [during a heatwave], both mortality and morbidity, then what we really see is that all of those numbers are massively amplified in people who are elderly … and people who have chronic diseases such as heart disease, kidney disease,” Jay said.

“It’s looking to a not-so-nice future for us, because urbanisation is increasing, density is increasing. With poor planning, that’s where we are headed.”

What can be done?

“So even if you put all your best landscaping and all the best urban planning in one council area, it will improve the situation, but it’s like operating the air conditioning with the windows open.”