Paris hits 100th day above 77F, its highest tally since records began in 1872

With 100 days above 77 degrees Fahrenheit already logged in 2026, Paris set a heat record unmatched in observations that go back to the 19th century.

Here's what to know

BBC Weather reported that Paris reached that 100-day total Tuesday based on measurements from the city's Montsouris station.

With records extending back to 1872, 2026 stands alone.

Officials at Météo-France, the national meteorological service, cautioned that the total was "very probably far from final." BBC Weather also said warmer conditions are expected to return to Paris on Monday.

More background

Hot weather is one of the most dangerous forms of extreme weather. It can increase the risk of dehydration, heat exhaustion, and heat stroke while also worsening heart and lung conditions, especially for older adults, young children, and people who work outdoors.

Worsening extreme weather disasters also threaten lives and livelihoods. Longer, hotter seasons can strain hospitals, raise electricity bills, disrupt transportation systems, reduce worker productivity, and put pressure on local businesses. For families already living on tight budgets, the added cost of staying cool can be a significant financial burden.

Cities are particularly vulnerable because concrete, asphalt, and densely packed buildings trap heat, making urban neighborhoods hotter than surrounding areas. That also means that temperature records that may seem modest can translate into uncomfortable — and sometimes unsafe — conditions on the ground.

What can be done?

At the city level, officials can reduce heat risks by expanding shade, planting and maintaining trees, opening cooling centers, improving access to public drinking water, and designing buildings and streets to absorb less heat. Alert systems can also help residents prepare before hot spells arrive.

It's important to stay hydrated, close blinds during the hottest hours, use fans or air conditioning, avoid strenuous activity during peak heat, and check in on neighbors or relatives who may be vulnerable.

Paying attention to local weather advisories and community resources can also help during prolonged warm periods. Knowing where to find a cooler indoor space can make a meaningful difference during a stretch of above-average heat.

Reducing the pollution that fuels rising global temperatures and investing in more resilient cities will be essential to limiting future heat risks.

Where can I learn more?

Paris is not alone; places all over the world are dealing with extreme heat. Here are just three examples of how brutal heat waves are impacting communities. 

• In Japan, one city hit a national heat record last year.

• The United Arab Emirates marked its second consecutive day of record-breaking and dangerous heat in 2025.

• Across Australia, residents faced temperatures beyond thermometer limits during a deadly January heat wave.

• In Arizona, officials warned that one of the driest winters could strain water supplies.

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