Cost to Run a Humidifier in Missouri
Missouri's average residential electricity rate is 13.7¢/kWh as of May 2026 — the 7th cheapest in the country, 26% below the U.S. average. At typical usage (10 hours/day), a humidifier here costs $1.67 per month.
Per hour
0.5¢
at 20–300 W
Per day
5.5¢
10 hours/day
Per month
$1.67
12 kWh
Per year
$20.00
146 kWh
By usage level in Missouri
| Usage | Per day | Per month | Per year |
|---|---|---|---|
| Light (5 hrs/day) | 2.7¢ | $0.83 | $10.00 |
| Typical (10 hrs/day) | 5.5¢ | $1.67 | $20.00 |
| Heavy (20 hrs/day) | $0.11 | $3.33 | $40.00 |
Missouri vs. the rest of the country
Monthly cost at typical usage.
Frequently asked questions
How much does it cost to run a humidifier in Missouri?
At Missouri's current average residential rate of 13.7¢/kWh (May 2026), a humidifier with typical usage costs about 5.5¢ per day, $1.67 per month, or $20.00 per year.
Is running a humidifier in Missouri more expensive than average?
No — it's cheaper. Missouri's rate is about 26% below the U.S. average: $1.67 per month here versus $2.24 nationally.
What does electricity cost in Missouri right now?
Missouri residents pay an average of 13.7¢ per kWh as of May 2026 — the 7th cheapest rate of the 51 U.S. jurisdictions we track.