"2015 European heatwave" I remember that one, it coincided with high air pollution: so much that one evening while leaving work, I realized that the Eiffel tow

"2015 European heatwave" I remember that one, it coincided with high air pollution: so much that one evening while leaving work, I realized that the Eiffel tower, quite close to the workplace, was barely visible in a haze of pollution. Also that heatwave, compared to the current, was made worse by a lack of wind, as far as I remember.