Cost to Run a Humidifier in Illinois
Illinois's average residential electricity rate is 23.9¢/kWh as of May 2026 — the 40th cheapest in the country, 30% above the U.S. average. At typical usage (10 hours/day), a humidifier here costs $2.91 per month.
Per hour
1.0¢
at 20–300 W
Per day
$0.10
10 hours/day
Per month
$2.91
12 kWh
Per year
$34.89
146 kWh
By usage level in Illinois
| Usage | Per day | Per month | Per year |
|---|---|---|---|
| Light (5 hrs/day) | 4.8¢ | $1.45 | $17.45 |
| Typical (10 hrs/day) | $0.10 | $2.91 | $34.89 |
| Heavy (20 hrs/day) | $0.19 | $5.81 | $69.79 |
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 23.9¢/kWh (May 2026), a humidifier with typical usage costs about $0.10 per day, $2.91 per month, or $34.89 per year.
Is running a humidifier in Illinois more expensive than average?
Yes. Illinois's electricity costs about 30% more than the U.S. average, so the same usage costs $2.91 per month here versus $2.24 nationally.
What does electricity cost in Illinois right now?
Illinois residents pay an average of 23.9¢ per kWh as of May 2026 — the 40th cheapest rate of the 51 U.S. jurisdictions we track.