Cost to Run a Air Purifier in South Dakota
South Dakota's average residential electricity rate is 14.5¢/kWh as of April 2026 — the 13th cheapest in the country, 23% below the U.S. average. At typical usage (24 hours/day (always on)), a air purifier here costs $4.23 per month.
Per hour
0.6¢
at 20–100 W
Per day
$0.14
24 hours/day (always on)
Per month
$4.23
29 kWh
Per year
$50.81
350 kWh
By usage level in South Dakota
| Usage | Per day | Per month | Per year |
|---|---|---|---|
| Light (12 hrs/day) | 7.0¢ | $2.12 | $25.40 |
| Typical (24 hrs/day) | $0.14 | $4.23 | $50.81 |
| Heavy (24 hrs/day) | $0.28 | $8.46 | $102 |
South Dakota vs. the rest of the country
Monthly cost at typical usage.
Frequently asked questions
How much does it cost to run a air purifier in South Dakota?
At South Dakota's current average residential rate of 14.5¢/kWh (April 2026), a air purifier with typical usage costs about $0.14 per day, $4.23 per month, or $50.81 per year.
Is running a air purifier in South Dakota more expensive than average?
No — it's cheaper. South Dakota's rate is about 23% below the U.S. average: $4.23 per month here versus $5.49 nationally.
What does electricity cost in South Dakota right now?
South Dakota residents pay an average of 14.5¢ per kWh as of April 2026 — the 13th cheapest rate of the 51 U.S. jurisdictions we track.