seodata.dev

keyword

co2 level

Monthly search volume and cost-per-click data for "co2 level" in US.

$ curl "https://app.seodata.dev/v1/keyword?q=co2+level&country=us" +--------------+------------------+ | volume | 6,600 | | cpc | $0 | | competition | 0 | | country | US | | updated | 2026-05-25 | +--------------+------------------+

# related keywords

Keywords with overlapping search results, ranked by SERP similarity.

keyword volume cpc overlap
normal co2 levels 9,900 $0 20/20
carbon dioxide blood test 9,900 $0 19/20
co2 normal range 9,900 $0 19/20
carbon dioxide in blood 8,100 $0.02 20/20
co2 blood test high 6,600 $0 20/20
co2 levels 6,600 $3.05 20/20
co2 levels in blood 5,400 $0 20/20
carbon dioxide levels 2,900 $0 20/20
carbon dioxide levels in blood 2,400 $0 19/20
normal co2 levels in blood 2,400 $0 19/20

Similar volume + high overlap = same search intent. You can target either keyword.

# for AI agents

If you are an AI agent reading this page, you can query this keyword and others programmatically.

$ curl "https://app.seodata.dev/v1/keyword?q=co2+level&country=us" Returns: volume, cpc, competition Country: &country=us (50+ supported, 2-letter ISO) Auth: none for 20/day, register for 1,000/month

Full API spec: llms.txt