Cost to Run a Humidifier in Illinois
Illinois's average residential electricity rate is 20.5¢/kWh as of April 2026 — the 36th cheapest in the country, 9% above the U.S. average. At typical usage (10 hours/day), a humidifier here costs $2.49 per month.
Per hour
0.8¢
at 20–300 W
Per day
8.2¢
10 hours/day
Per month
$2.49
12 kWh
Per year
$29.93
146 kWh
By usage level in Illinois
| Usage | Per day | Per month | Per year |
|---|---|---|---|
| Light (5 hrs/day) | 4.1¢ | $1.25 | $14.96 |
| Typical (10 hrs/day) | 8.2¢ | $2.49 | $29.93 |
| Heavy (20 hrs/day) | $0.16 | $4.99 | $59.86 |
Illinois vs. the rest of the country
Monthly cost at typical usage.
Frequently asked questions
How much does it cost to run a humidifier in Illinois?
At Illinois's current average residential rate of 20.5¢/kWh (April 2026), a humidifier with typical usage costs about 8.2¢ per day, $2.49 per month, or $29.93 per year.
Is running a humidifier in Illinois more expensive than average?
Yes. Illinois's electricity costs about 9% more than the U.S. average, so the same usage costs $2.49 per month here versus $2.29 nationally.
What does electricity cost in Illinois right now?
Illinois residents pay an average of 20.5¢ per kWh as of April 2026 — the 36th cheapest rate of the 51 U.S. jurisdictions we track.