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Live conditions for a sample hub city until you search.

Sample snapshot — search a route to replace this with your origin, destination, and travel date.

Origin (departure city)

Chengdu

45 Chengdu (成都)

Good — Air quality is satisfactory. Pollution poses little or no risk for most people.

For travelers: Outdoor sightseeing and station transfers are fine for almost everyone.

Main driver today: Ozone (O₃) — Forms on sunny days from other pollutants — can irritate lungs during afternoon outdoor activity.

Supporting readings (what the numbers are)

Fine particles (PM2.5) 34Tiny soot and dust from traffic, coal, and industry — the usual driver of smog in Chinese cities.
Coarse dust (PM10) 9Larger particles from roads, construction, and wind-blown dust.
Ozone (O₃) drives index 44.7Forms on sunny days from other pollutants — can irritate lungs during afternoon outdoor activity.
Nitrogen dioxide (NO₂) 6.4A traffic-related gas — higher near busy roads and rail approaches.
Carbon monoxide (CO) 5.5From incomplete fuel burning — usually low outdoors but worth noting in tunnels or heavy traffic.

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Upcoming holidays

Official public holidays in the next ~8 weeks. Run a train search to see how they line up with your travel date.

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