Cost to Run a Air Purifier in South Dakota
South Dakota's average residential electricity rate is 15.7¢/kWh as of May 2026 — the 21st cheapest in the country, 15% below the U.S. average. At typical usage (24 hours/day (always on)), a air purifier here costs $4.58 per month.
Per hour
0.6¢
at 20–100 W
Per day
$0.15
24 hours/day (always on)
Per month
$4.58
29 kWh
Per year
$55.01
350 kWh
By usage level in South Dakota
| Usage | Per day | Per month | Per year |
|---|---|---|---|
| Light (12 hrs/day) | 7.5¢ | $2.29 | $27.51 |
| Typical (24 hrs/day) | $0.15 | $4.58 | $55.01 |
| Heavy (24 hrs/day) | $0.30 | $9.16 | $110 |
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 15.7¢/kWh (May 2026), a air purifier with typical usage costs about $0.15 per day, $4.58 per month, or $55.01 per year.
Is running a air purifier in South Dakota more expensive than average?
No — it's cheaper. South Dakota's rate is about 15% below the U.S. average: $4.58 per month here versus $5.37 nationally.
What does electricity cost in South Dakota right now?
South Dakota residents pay an average of 15.7¢ per kWh as of May 2026 — the 21st cheapest rate of the 51 U.S. jurisdictions we track.