SD · free air
Free air in South Dakota
Is air free in South Dakota?
Owner decidesNot by law. South Dakota has no free-air law, so each station owner decides. Of the 77 places with air we have mapped in South Dakota, 52 (68 %) are free or usually free, mostly at Kwik Trip, Pilot and Flying J and Hy-Vee, plus tire shops such as Les Schwab and Discount Tire that fill tires for free.
- places with air
- 77
- free or usually free
- 52
- tire shops fill free
- 13
- open 24/7 (known)
- 22
Chains with air in South Dakota
The brands with the most locations on our South Dakota map, and what to expect at each.
| Chain | Locations in SD | Free air |
|---|---|---|
| Kwik Trip | 19 | Usually free |
| Sinclair | 18 | Depends on the store |
| Les Schwab | 11 | Free, staff fill |
| Pilot and Flying J | 5 | Usually free |
| Hy-Vee | 4 | Usually free |
| Lowe's | 3 | Usually free |
| Kum & Go | 2 | Usually free |
| BP | 1 | Depends on the store |
| Holiday | 1 | Depends on the store |
| Circle K | 1 | Depends on the store |
| QuikTrip | 1 | Usually free |
| Discount Tire | 1 | Free, staff fill |
| Costco | 1 | Free for members |
Free air by city in South Dakota
Number of places with air per city. Cities with a link have their own page with every address.
- Sioux Falls22 free / 23
- Rapid City14
- Brookings3
- Pierre3
- Watertown3
- Harrisburg3
- Brandon3
- Yankton2
- Aberdeen2
- Madison2
- Murdo2
- Mitchell2
- Burbank1
- Volga1
- Milbank1
- Keystone1
- Custer1
- Belle Fourche1
- Humboldt1
- Vivian1
- Elk Point1
- Hartford1
- Vermillion1
- Spearfish1
Confirmed free air pumps in South Dakota
Places where drivers or the operator confirmed the air is free.
BP
Free47051 South Dakota Highway 50, Burbank, SD 57010
Winter tire pressure in South Dakota
−5 PSI
typical drop from July to January
The average temperature in South Dakota goes from about 73 °F in July to 20 °F in January. Tire pressure falls roughly 1 PSI for every 10 °F, so a tire set to 35 PSI on a summer afternoon reads about 30 PSI on an average winter morning.
Most tire pressure warning lights switch on when a tire is about 25 % below its recommended pressure. A cold front plus a slow leak gets there fast, so check your tires as soon as the first cold mornings arrive.
Free air in neighboring states
Free air in South Dakota: questions
Is air free at gas stations in South Dakota?
Only where the owner chooses. South Dakota doesn't require free air, so many stations use coin or card machines that cost one to two dollars. Chains that give air away at most stores are your best bet, and some clerks switch a paid machine to free if you ask.
Which gas stations have free air in South Dakota?
On our map, the chains with the most free or usually free air pumps in South Dakota are Kwik Trip (19), Pilot and Flying J (5), Hy-Vee (4) and Lowe's (3). At franchised brands like Shell, BP or Exxon, it depends on the owner.
Where can I check my tire pressure for free in South Dakota?
Tire shops are the easiest option: Les Schwab (11 locations) and Discount Tire (1 locations) check and fill tires for free during business hours, no purchase needed.
How much does tire pressure drop in winter in South Dakota?
South Dakota averages about 73 °F in July and 20 °F in January (NOAA, 2015–2024). At roughly 1 PSI per 10 °F, tires filled in summer lose about 5 PSI by midwinter, often enough to switch on the low-pressure warning. Top them up when the weather turns.
Which city in South Dakota has the most free air pumps?
On our map, Sioux Falls has the most free or usually free spots in South Dakota: 22 of 23 places with air.