Houston usually makes the top 10 in rankings of U.S. traffic congestion, so motorists might take some small comfort in a recent list that has the city at No. 11.

The rest of the report, however, is a bit of a downer. An estimated one-quarter of travel time in Houston is blamed solely on congestion.

The staff of TomTom, the people who tracktrack how much time you wastewaste, released their annual traffic index Tuesday morning. Compared to cities across the globe, Houston comes in with the 93rd-worst traffic congestion. Mexico City, Bangkok and Istanbul take the top spots. Los Angeles is the only American city to crack the top 30.

Here are five things to consider and interesting facts about the findings in Houston, which focus on congestion during morning and evening commuting times.

34 minutes: The amount of extra travel time each day. Keep in mind this is not how long it takes people to get from home to work and vice versa. In Houston, where it’s totally normal to live 30 miles from where you work, travel times in general are going to be higher. That 34 minutes is the extra travel time blamed on congestion.

Streets more crowded: On highways, drivers experience 23 percent more travel time, meaning a 20-minute trip takes 24.6 minutes. On local streets, however, drivers endure 27 percent more travel time as a result of congestion, adding 48 seconds to that 20-minute trip on local streets.

It’s getting worse: From 2008 to 2011, traffic congestion in Houston stayed relatively stable in TomTom’s reports, with drivers experiencing between 17 percent and 19 percent more travel time for trips. Since 2012, however, the congestion has grown from 20 percent to 25 percent in 2014 and 2015. During that time, state and local transportation officials have spent billions on more streets and even light rail, which so far hasn’t led to a reduction in congestion.

Quitting time quagmire: Evening commutes in Houston are far worse than mornings, with every day except Fridays more than 60 percent longer in travel time because of peak congestion. From 5 p.m. to 6 p.m., traffic is at its worst every single day.

June gloom: In 2015, the worst travel day was June 30, which otherwise was a relatively quiet Tuesday. It was the 20th anniversary of the movie "Apollo 13" opening in theaters. So what made it the worst? The only abnormality in terms of traffic, based on the data compiled from Houston TranStar, is an abundance of accidents between 5 p.m. and 6 p.m. on the freeways.