Unusual pink glows lighting up night skies above football stadiums have recently caught public attention across parts of England.
But while the phenomenon may look striking, campaigners are warning that the powerful lights used to maintain pitches could carry unintended consequences.
What has been said about stadium light pollution?
Concerns have been raised by DarkSky UK, whose chair Roy Alexander says intense artificial lighting used in stadium turf maintenance could interfere with natural biological rhythms.
The issue gained prominence after bright pink skies were seen above St Andrew’s Stadium, home of Birmingham City F.C.
The glow was linked to LED lighting used to help grow and maintain grass on the pitch, with atmospheric conditions such as cloud cover and snow reflecting the light back into the sky.
Alexander warned that exposure to strong artificial light at night could disrupt the body’s natural sleep cycle. Humans, animals and plants evolved to operate on a 24-hour rhythm of light and darkness, he said, and excessive brightness at night risks interfering with that process, via the BBC.
A House of Lords Science and Technology Committee report in 2023 also examined the effects of light pollution, suggesting that prolonged exposure may contribute to adverse health outcomes, including an increased risk of heart disease. The report acknowledged, however, that more research is still needed to fully understand the scale of the problem.
Campaigners are also concerned about wildlife, particularly nocturnal animals that rely on darkness to feed and navigate. Alexander described artificially lit night skies as an “environmental disaster” and argued the UK is lagging behind other countries in managing light pollution around large venues.
FGG says: Football’s modern tech needs smarter lighting solutions
Grow lights have become a vital tool for maintaining elite-level pitches, especially in enclosed modern stadiums.
But as technology evolves, clubs may increasingly need to balance turf quality with environmental responsibility and community impact.
If pink skies are becoming a regular sight, it suggests the conversation around smarter, more focused lighting systems is only just beginning.