Smoke from raging wildfires in the western US and Canada drifted thousands of miles east — leaving a thick layer of haze over the Big Apple that made the sun glow with a red-orange hue. 

The smoky conditions in New York City also led to harmful air quality.

On Wednesday morning, the air quality index climbed to 157 in Manhattan — higher than the threshold of 100 that triggers health concerns, according to climate data nonprofit Berkeley Health.

Vulnerable people, including pregnant women and the elderly, are warned that they may experience breathing difficulty, throat irritation and runny eyes when exposed to the air.

Footage showed the sun appear as if it were red-orange on Tuesday evening due to the conditions.

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