Map
Ozone Season Lengths Across the Country
As long as ozone season sticks around, so do concerns about the health risks of poor air quality. Check out where ozone is an issue across the country.
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Explainer: How Ground-Level Ozone Is Formed
Ground-level ozone is a hazardous air pollutant and a key component of smog. Here’s how it forms.
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How Ozone Levels Are Changing in Your City
Ozone pollution can reach unhealthy levels in your city. Here’s how the number of unhealthy ozone days have changed over time.
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More Extremely Hot Days (2019)
Climate change is making summer scorchers all the more extreme—check the trend for area.
Map
Planting Zones Moving North
Planting zones are shifting north as the climate warms, influencing which plants grow best in your area.
Map
The Changing Growing Season Around the U.S.
Climate change is affecting the growing season — and the allergies that come with it — around the country.
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Longer Growing Season Means Longer Allergy Season
Here’s how climate change is affecting the allergy season in your city.
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