llms.txt
+11 −4
− - [World map and countries](https://smogrank.com/world): continents at /world/{asia, europe, africa, north-america, south-america, oceania}− - [Explore](https://smogrank.com/explore): the live map, every city since 2023, country and city races, city comparisons, year-on-year changes, the air calendar− - [Past rankings](https://smogrank.com/history): /history/YYYY, YYYY-MM, YYYY-Www, YYYY-MM-DD− - City pages: https://smogrank.com/{country code}/{city}, e.g. /us/los-angeles+ - Other ways to rank: ?by=days (share of measured days over 35.4 µg/m³, unhealthy) and ?by=people (population times that share) on the 30-day and year-to-date boards and on past months and years, e.g. https://smogrank.com/rankings?w=30d&by=days; ?by=peak (a city's worst 6 hours, read by two sites 3 km or more apart) where a board offers it+ - [World map and countries](https://smogrank.com/world): continents at /world/{asia, europe, africa, north-america, south-america, oceania}; the page's "Explore the map" opens the live map: every measured city with the day's fires, smoke and volcanic ash, the last week hour by hour, and every city day by day since January 2023+ - [Explore](https://smogrank.com/explore): every way to explore the measurements, listed below+ - [Past rankings](https://smogrank.com/history): /history/YYYY, YYYY-MM, YYYY-Www, YYYY-MM-DD; with the air calendar, every measured country's typical city week by week since 2023+ - [The race](https://smogrank.com/history/race): countries by their typical city over 30 days (?w=7d for 7), day by day since 2023, as a bar-chart race; ?k=cities for the 40 worst cities, &in={country code} for one country's, e.g. https://smogrank.com/history/race?k=cities&in=in+ - [Cleaner or dirtier](https://smogrank.com/changes): every measured city's PM2.5 against the same days a year earlier, biggest rise first; ?year=YYYY for a finished year, ?in={country code} for one country, e.g. https://smogrank.com/changes?in=in+ - [Compare two cities](https://smogrank.com/compare): pick any two measured cities, or go straight to https://smogrank.com/compare/{country code}-{city}/{country code}-{city}, the pair in alphabetical order, e.g. https://smogrank.com/compare/in-delhi/pk-lahore: means, months, years and worst days, on the days both cities measured in the last year+ - City pages: https://smogrank.com/{country code}/{city}, e.g. /us/los-angeles: PM2.5 now, why it ranks where it does, its ranks, the last 12 months and its bad-air episodes+ - A city's months: https://smogrank.com/{country code}/{city}/history, e.g. /in/delhi/history: every month since its first measured day, each year's mean, days measured and world rank, its worst months and days+ - [Find a city](https://smogrank.com/search?q=delhi): /search?q={name}+ - [Air quality scales](https://smogrank.com/scales): PM2.5 in µg/m³ on every scale we show (US AQI, India AQI, China AQI, the European index, UK DAQI, Canada AQHI+) on one chart, with a converter: ?ug={µg/m³}, or ?from={us|in|cn|uk|ca}&i={index}; a page per scale at /scales/{us|in|cn|eu|uk|ca} with its bands and how many cities are in each now