Clean Truck Check Credentialed Tester

Clean Truck Check in San Jose, CA

32 credentialed testers in San Jose.

Testers in San Jose

Nearby truck stops

OpenStreetMap-tagged truck stops, services areas, and HGV-marked fuel stations within 25 miles of San Jose. Useful for routing a service stop around your CTC test.

+1 unnamed stop also in range.

Source: © OpenStreetMap contributors. Last updated 2026-05-18.

Air quality context in and around San Jose

Annual aggregate readings from EPA Air Quality System monitors within about 25 miles of San Jose, reporting year 2025. Clean Truck Check exists to reduce real-world emissions from heavy-duty vehicles — the numbers below are the local baseline those rules are designed to improve.

PM2.5
4.57 Micrograms/cubic meter (LC)
2 monitors · 22,691 observations · 11 days above standard
Nitrogen dioxide (NO₂)
5.96 Parts per billion
1 monitor · 16,524 observations · 0 days above standard
Ozone (O₃)
0.04 Parts per million
2 monitors · 63,722 observations · 0 days above standard

Source: EPA Air Quality System (AQS) API. Reporting year 2025. Last fetched 2026-05-18.