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A taxi driver tries to cool off in Tehran as temperatures in the Iranian capital exceed 35C. Photograph: Abedin Atehrkenareh/EPA
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Tuesday has been officially recognized as the hottest day ever recorded

A taxi driver tries to cool off in Tehran as temperatures in the Iranian capital exceed 35C. Photograph: Abedin Atehrkenareh/EPA
A taxi driver tries to cool off in Tehran as temperatures in the Iranian capital exceed 35C.
Photograph: Abedin Atehrkenareh/EPA

Average global temperature hits 17.18C and experts expect record to be broken again very soon


World temperature records have been broken for a second consecutive day, according to data, as experts have issued a warning indicating that this year’s warmest days are yet to come – and along with them, the warmest days ever documented. This alarming trend serves as a poignant reminder of the significant challenges we face in combating climate change, urging us to take swift and decisive action to mitigate its adverse effects.

The average global air temperature was 17.18C (62.9F) on Tuesday, according to data collated by the US National Centers for Environmental Prediction (NCEP), surpassing the record 17.01C reached on Monday. Until the start of this week, the hottest day on record was in 2016, during the last El Niño global weather event, when the global average temperature reached 16.92C. Monday’s global average temperature, as reported by the US National Centers for Environmental Prediction (NCEP), surpassed the previous record set in 2016 during the last El Niño global weather event. The temperature soared to 17.01C, marking a new high. However, this record was soon surpassed on Tuesday when the average global air temperature reached 17.18C. These rising temperatures highlight the ongoing impact of the climate crisis on our planet.

On Tuesday, the World Meteorological Organization, the UN’s weather body, confirmed El Niño had returned. Experts predicted that, combined with the increased heat from anthropogenic global heating, it would lead to more record-breaking temperatures.

“El Niño hasn’t peaked yet and summer is still in full swing in the northern hemisphere, so it wouldn’t be surprising if the record were broken again in coming days or weeks,” said Dr Paulo Ceppi, a lecturer in climate science at the Grantham Institute, Imperial College London.

Dr Karsten Haustein, a research fellow in atmospheric radiation at Leipzig University, said: “The coming days will probably see a small downturn, but since the annual global temperature maximum is at the end of July, more days are likely to be warmer than yesterday (given that El Niño is now pretty much in full swing) …

“Chances are that the month of July will be the warmest ever, and with it the hottest month ever … ‘ever’ meaning since the Eemian, which is indeed some 120,000 years ago.”


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The record-breaking mean temperature was reported by the Climate Reanalyzer service hosted by the University of Maine’s Climate Change Institute. It uses data from the NCEP’s climate forecast system to provide a time series of daily mean two-metre air temperature, based on readings from surface, air balloon, and satellite observations. The Guardian contacted the Climate Change Institute for comment. According to the Climate Reanalyzer service, this remarkable temperature is a clear indication of the ongoing climate change phenomenon. As temperatures continue to rise, it is crucial for institutions and governments worldwide to prioritize sustainable practices and adopt measures that mitigate the effects of climate change on our planet’s ecosystems.

Various parts of the world have been experiencing heatwaves, an increasingly frequent occurrence attributed to climate change. The Met Office recently reported that the UK had its hottest ever June, raising concerns about the long-term implications of rising temperatures. Similarly, the southern US has been sweltering under an intense heat dome, which has significantly impacted daily life and even holiday celebrations. Meanwhile, in parts of China, the enduring heatwave persists with temperatures well above 35C, aggravating the challenges faced by communities.

A security guard wipes sweat from his forehead in Beijing, China, on 3 July 2023. Photograph: Andy Wong/AP
A security guard wipes sweat from his forehead in Beijing, China, on 3 July 2023.
Photograph: Andy Wong/AP

Beyond these regions, North Africa has witnessed scorching temperatures nearing 50C, creating a hazardous environment for residents and visitors alike. In the Middle East, thousands of pilgrims embarking on the hajj religious journey in Saudi Arabia have had to endure unusually high temperatures, further highlighting the severity of the heatwave. These extreme weather events serve as reminders of the urgent need for governments, communities, and individuals to take decisive action to mitigate the effects of climate change and ensure the well-being of current and future generations.

Even Antarctica, where it is currently winter, has registered anomalously high temperatures. Ukraine’s Vernadsky research base, in the vast frozen continent’s Argentine Islands, recently broke its July temperature record with a reading of 8.7C. Antarctica, despite being in the midst of its winter season, has experienced unusually high temperatures. Notably, Ukraine’s Vernadsky research base, located in the Argentine Islands of this expansive frozen continent, recently set a new record for July with a temperature reading of 8.7C.

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“The temperatures creating these record-breaking days match exactly expectations under human-caused climate change,” said Ilan Kelman, a professor of disasters and health at University College London’s Institute for Risk and Disaster Reduction.

“As the rising temperatures drive worsening heatwaves, including terrible humidity, we expect to see substantial increases in related deaths. Many people cannot afford indoor cooling and some people must be outside for work. Heat-humidity then becomes the silent killer, since we often do not realise how many people are in lethal difficulty, especially when it does not cool down at night.”



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