Sentence examples for pollution levels from inspiring English sources

Billboards flash pollution levels.

Pollution levels have since subsided.

Pollution levels are often extreme.

Other areas will have low pollution levels.

Yet air pollution levels remain perilously high.

Lichens can reveal local air pollution levels.

But pollution levels remain incredibly high.

Most cities improved their ozone pollution levels.

Researchers look to quantify pollution levels.

The current law does not spell out safe pollution levels.

That will continue to rise with pollution levels.