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r/radon↗

Radon Information and Help

Radon is an odorless, invisible, radioactive gas naturally released from rocks, soil, and water. Radon can get into homes and buildings through small cracks or holes and build up in the air. Over time, breathing in high levels of radon can cause lung cancer.

10k subscribers86 posts / mo in Sep 202681 authors / mosince 2013

r/radon has 10k members (+65% over the last 12 months). It gets about 86 posts a month from 81 people. Top topics: Wildfire Smoke Impact.

Free report

When to post on r/radon

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Visitors without an account can open 3 subreddit reports a day. The best time to post on r/radon, removal risk and the rest of the report are one step away.

Size and growth

How r/radon has grown

r/radon

Subscriber growth

Subscribers over time

+65%in 12 months · +8.4% in 3 months · +2.3% in 1 month
Oct 202610k
Growing10k subscribers
Data since Mar 2018Live · through Oct 2026
r/radon

Monthly activity

Posts, comments and authors per month

−4.4%vs Sep 2025 · +4.7% last 3 months vs the 3 before
Sep 202686
QuieterPeaked at 156 in Jan 2026
Data through Sep 2026 · October usually lands mid-November

What people talk about

Topics and brands on r/radon

Top topics

Share of the subreddit's posts

  1. Wildfire Smoke Impact1.0%

Brands people mention

Most-mentioned brands and sites, last 12 months

  1. US EPA
  2. The Home Depot
  3. AirThings
  4. Canada
  5. GraphPad

The full report

Everything else about r/radon

Posting rules and account requirements, how often posts get removed, who writes here (age, gender, countries), what people ask for, how they talk, and related subreddits — all in the full report.

Posts and activity for Sep 2026. Members from Reddit's subscriber counts. Read from the same data the app runs on. Our research