MO · free air
Free air in Missouri
Is air free in Missouri?
Owner decidesNot by law. Missouri has no free-air law, so each station owner decides. Of the 447 places with air we have mapped in Missouri, 312 (70 %) are free or usually free, mostly at QuikTrip, Lowe's and Kum & Go, plus tire shops such as Discount Tire that fill tires for free.
- places with air
- 447
- free or usually free
- 312
- tire shops fill free
- 24
- open 24/7 (known)
- 186
Chains with air in Missouri
The brands with the most locations on our Missouri map, and what to expect at each.
| Chain | Locations in MO | Free air |
|---|---|---|
| QuikTrip | 162 | Usually free |
| Lowe's | 47 | Usually free |
| Kum & Go | 34 | Usually free |
| Discount Tire | 24 | Free, staff fill |
| Pilot and Flying J | 22 | Usually free |
| Hy-Vee | 21 | Usually free |
| Phillips 66 | 20 | Depends on the store |
| Sinclair | 14 | Depends on the store |
| BP | 10 | Depends on the store |
| Costco | 10 | Free for members |
| Shell | 6 | Depends on the store |
| Casey's | 5 | Depends on the store |
| Maverik | 4 | Depends on the store |
| Circle K | 4 | Depends on the store |
| Mobil | 3 | Depends on the store |
Free air by city in Missouri
Number of places with air per city. Cities with a link have their own page with every address.
- Kansas City44 free / 66
- Springfield29 free / 41
- Independence17 free / 20
- St Louis16
- Saint Peters9
- Saint Louis8
- Saint Charles8
- Joplin8
- Lee's Summit8
- O'Fallon6
- Columbia6
- Republic6
- Overland5
- St Louis Downtown5
- Blue Springs5
- Fenton5
- Saint Joseph5
- Rolla5
- Liberty5
- Belton5
- Lake Ozark4
- Arnold4
- Wentzville4
- Kearney4
- Kirkwood3
- Branson3
- Maryville3
- Pleasant Valley3
- Maryland Heights3
- Ballwin3
- Matthews3
- Washington3
- Mansfield3
- Festus3
- Chesterfield3
- Platte City3
- Grain Valley3
- Ferguson3
- Hazelwood3
- Neosho3
- Lebanon3
- Bridgeton3
- Lake Saint Louis3
- Maplewood2
- Mehlville2
- Hillsboro2
- Collins2
- Jefferson City2
- Creve Coeur2
- Lawson2
- Bethany2
Confirmed free air pumps in Missouri
Places where drivers or the operator confirmed the air is free.
Gas station
FreeBranson, MO 65616
BP
FreeKansas City, MO 64111
QuikTrip
Free1201 Westport Rd, Kansas City, MO 64111
Hours: Open 24/7
QuikTrip
Free4327 Main St, Kansas City, MO 64111
Hours: Open 24/7
Air pump
FreeKirkwood, MO 63122
Air pump
FreeMaplewood, MO 63143
QuikTrip
FreeMehlville, MO 63125
Hours: Open 24/7
QuikTrip
Free8601 Mexico Road, O'Fallon, MO 63366
QuikTrip
Free2621 Woodson Rd, Overland, MO 63114
Hours: Open 24/7
QuikTrip
Free391 Main Street, Saint Peters, MO 63376
Hours: Open 24/7
QuikTrip
Free3000 Mid Rivers Mall Drive, Saint Peters, MO 63376
Hours: Open 24/7
Maverik
FreeSpringfield, MO 65807
Hours: Open 24/7
QuikTrip
Free3291 S Kingshighway Blvd, St Louis Downtown, MO 63139
Hours: Open 24/7
Winter tire pressure in Missouri
−5 PSI
typical drop from July to January
The average temperature in Missouri goes from about 78 °F in July to 32 °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 Missouri: questions
Is air free at gas stations in Missouri?
Only where the owner chooses. Missouri 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 Missouri?
On our map, the chains with the most free or usually free air pumps in Missouri are QuikTrip (162), Lowe's (47), Kum & Go (34) and Pilot and Flying J (22). At franchised brands like Shell, BP or Exxon, it depends on the owner.
Where can I check my tire pressure for free in Missouri?
Tire shops are the easiest option: Discount Tire (24 locations) check and fill tires for free during business hours, no purchase needed.
How much does tire pressure drop in winter in Missouri?
Missouri averages about 78 °F in July and 32 °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 Missouri has the most free air pumps?
On our map, Kansas City has the most free or usually free spots in Missouri: 44 of 66 places with air.