Did you know that October is National Energy Awareness Month?

Me neither. But 74 percent of Americans today support efforts to protect the environment. So says personal-finance website WalletHub, which has conducted an “in-depth analysis” of 2016’s Greenest Cities in America.

Analysts compared the 100 largest cities across 20 key indicators of sustainability, ranging from “greenhouse-gas emissions per capita” to “number of smart-energy policies and initiatives.”

La Hoihoi Ea festival Thomas Square (Hawaiian flag day) as a Hawaiian flag blows in the wind. 30 july 2016

The La Hoihoi Ea festival in Thomas Square, July 30.

Cory Lum/Civil Beat

Guess what? Honolulu is No. 2.

Here’s how we scored when it comes to “greenness” “

  • 1st – greenhouse-gas emissions per capita
  • 1st – percentage of green space
  • 12th – percentage of commuters who drive
  • 1st – number of farmers markets per capita
  • 1st – median air quality index
  • 21st – walk score

Greenest city? San Francisco.

Least-greenest city? Baton Rouge, Louisiana.

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