WI · free air
Free air in Wisconsin
Is air free in Wisconsin?
Owner decidesNot by law. Wisconsin has no free-air law, so each station owner decides. Of the 693 places with air we have mapped in Wisconsin, 605 (87 %) are free or usually free, mostly at Kwik Trip, Costco and Pilot and Flying J, plus tire shops such as Discount Tire and Mavis Discount Tire that fill tires for free.
- places with air
- 693
- free or usually free
- 605
- tire shops fill free
- 18
- open 24/7 (known)
- 398
Chains with air in Wisconsin
The brands with the most locations on our Wisconsin map, and what to expect at each.
| Chain | Locations in WI | Free air |
|---|---|---|
| Kwik Trip | 558 | Usually free |
| BP | 16 | Depends on the store |
| Discount Tire | 15 | Free, staff fill |
| Costco | 13 | Free for members |
| Pilot and Flying J | 9 | Usually free |
| Mobil | 8 | Depends on the store |
| Lowe's | 8 | Usually free |
| Citgo | 7 | Depends on the store |
| Speedway | 5 | Depends on the store |
| Shell | 4 | Depends on the store |
| Hy-Vee | 3 | Usually free |
| Mavis Discount Tire | 3 | Free, staff fill |
| Circle K | 2 | Depends on the store |
| Casey's | 2 | Depends on the store |
| Marathon | 2 | Depends on the store |
Free air by city in Wisconsin
Number of places with air per city. Cities with a link have their own page with every address.
- Madison23 free / 39
- Eau Claire18
- Appleton15
- La Crosse14
- Waukesha13
- Green Bay12
- Janesville11
- Wausau10
- Oshkosh10
- Kenosha10
- Milwaukee9
- Fond du Lac9
- City of Superior8
- Menomonie7
- Middleton7
- New Berlin7
- Onalaska7
- West Bend6
- Sun Prairie6
- Sheboygan6
- Oak Creek6
- Manitowoc6
- Verona5
- Menomonee Falls5
- Fitchburg5
- Stoughton5
- Oconomowoc5
- Black River Falls5
- Mount Pleasant5
- Pleasant Prairie5
- Beloit5
- Delavan4
- Hudson4
- Stevens Point4
- Wisconsin Rapids4
- DeForest4
- Evansville4
- Pewaukee4
- River Falls4
- Ashwaubenon4
- Village of Lisbon4
- Mauston4
- De Pere4
- Tomah4
- Wauwatosa3
- Whitewater3
- Reedsburg3
- Elkhorn3
- Baraboo3
Confirmed free air pumps in Wisconsin
Places where drivers or the operator confirmed the air is free.
Coontail Market
Free5466 Park Street, Boulder Junction, WI 54512
Kwik Trip
Free1530 Elm St, Cumberland, WI 54829
Hours: Open 24/7
Kwik Trip
Free408 S Wright St, Delavan, WI 53115
Hours: Open 24/7
Circle K
FreeHudson, WI 54016
Kwik Trip
Free1213 Broadway Street South, Menomonie, WI 54751
Hours: Open 24/7
Air pump
FreeMiddleton, WI 53562
Air pump
FreeMilwaukee, WI 53211
Air pump
FreeMilwaukee, WI 53211
Air pump
FreeMilwaukee, WI 53211
Kwik Trip
Free1424 N Lake Ave, Phillips, WI 54555
Hours: Open 24/7
Kwik Trip
FreeReedsburg, WI 53959
Kwik Trip
Free2145 County Road Pb, Verona, WI 53593
Hours: Open 24/7
Kwik Trip
Free2215 N 6th St, Wausau, WI 54403
Hours: Open 24/7
Air pump
FreeWauwatosa, WI 53222
Kwik Trip
Free1580 E Washington St, West Bend, WI 53095
Hours: Open 24/7
Kwik Trip
Free305 Elkhorn Rd, Whitewater, WI 53190
Hours: Open 24/7
Winter tire pressure in Wisconsin
−5 PSI
typical drop from July to January
The average temperature in Wisconsin goes from about 70 °F in July to 17 °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 Wisconsin: questions
Is air free at gas stations in Wisconsin?
Only where the owner chooses. Wisconsin 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 Wisconsin?
On our map, the chains with the most free or usually free air pumps in Wisconsin are Kwik Trip (558), Costco (13), Pilot and Flying J (9) and Lowe's (8). At franchised brands like Shell, BP or Exxon, it depends on the owner.
Where can I check my tire pressure for free in Wisconsin?
Tire shops are the easiest option: Discount Tire (15 locations) and Mavis Discount Tire (3 locations) check and fill tires for free during business hours, no purchase needed.
How much does tire pressure drop in winter in Wisconsin?
Wisconsin averages about 70 °F in July and 17 °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 Wisconsin has the most free air pumps?
On our map, Madison has the most free or usually free spots in Wisconsin: 23 of 39 places with air.