Cost to Run a Humidifier in Illinois
Illinois's average residential electricity rate is 19.2¢/kWh as of July 2026 — the 35th cheapest in the country, 5% above the U.S. average. At typical usage (10 hours/day), a humidifier here costs $2.33 per month.
Per hour
0.8¢
at 20–300 W
Per day
7.7¢
10 hours/day
Per month
$2.33
12 kWh
Per year
$28.03
146 kWh
By usage level in Illinois
| Usage | Per day | Per month | Per year |
|---|---|---|---|
| Light (5 hrs/day) | 3.8¢ | $1.17 | $14.02 |
| Typical (10 hrs/day) | 7.7¢ | $2.33 | $28.03 |
| Heavy (20 hrs/day) | $0.15 | $4.67 | $56.06 |
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 19.2¢/kWh (July 2026), a humidifier with typical usage costs about 7.7¢ per day, $2.33 per month, or $28.03 per year.
Is running a humidifier in Illinois more expensive than average?
Yes. Illinois's electricity costs about 5% more than the U.S. average, so the same usage costs $2.33 per month here versus $2.23 nationally.
What does electricity cost in Illinois right now?
Illinois residents pay an average of 19.2¢ per kWh as of July 2026 — the 35th cheapest rate of the 51 U.S. jurisdictions we track.