SmogRank / World / Europe / France / Occitanie

Most polluted cities in Occitanie, France

10 measured cities, last 30 days; 0 above the WHO 24-hour guideline. Worst: Nîmes at 7.2 µg/m³, #1,243 in the world.

Ranked by unhealthy days: the share of each city's measured days with a daily mean over 35.4 µg/m³ (US AQI 101+), Unhealthy for Sensitive Groups or worse on the US EPA's scale. Ties go to the higher average.

New Aquitaine: 9 measured citiesOccitanie: 10 measured citiesAuvergne-Rhône-Alpes: 20 measured citiesProvence-Alpes-Côte d'Azur: 10 measured cities#10 Rodez: 4.6 µg/m³#9 Lourdes: 5.3 µg/m³#8 Montauban: 5.4 µg/m³#7 Castres: 5.5 µg/m³#4 Tarbes: 5.8 µg/m³#5 Perpignan: 5.8 µg/m³#6 Albi: 5.8 µg/m³#3 Toulouse: 6.4 µg/m³#2 Montpellier: 6.6 µg/m³#1 Nîmes: 7.2 µg/m³
Each dot is a measured city, coloured by its PM2.5; tap a dot to open the city.
← Nîmes 0% 0.75%0
Every measured city in Occitanie, France, one column each, ranked by unhealthy days: height is the share of its measured days that were unhealthy, colour its average. Point at it to read a city; tap to open it.
  1. 1Nîmes 0%
  2. 2Montpellierlast full day 3 Oct 0%
  3. 3Toulouselast full day 3 Oct 0%
  4. 4Tarbeslast full day 3 Oct 0%
  5. 4Perpignanlast full day 3 Oct 0%
  6. 4Albilast full day 3 Oct 0%
  7. 7Castreslast full day 3 Oct 0%
  8. 8Montaubanlast full day 3 Oct 0%
  9. 9Lourdeslast full day 3 Oct 0%
  10. 10Rodezlast full day 3 Oct 0%
Good0–50
Moderate51–100
Sensitive groups101–150
Unhealthy151–200
Very unhealthy201–300
Hazardous301+

The US EPA's Air Quality Index for PM2.5 (2024 breakpoints). Show values as: µg/m³ · US AQI · India AQI · China AQI · European AQI · UK DAQI · Canada AQHI+. About the scales

Estimated: cities without a monitor

Occitanie cities we can't measure, with model estimates for the last 7 days. Listed by population, not ranked: estimates aren't precise enough to rank. Model estimates from the Copernicus Atmosphere Monitoring Service (CAMS), adjusted to measured cities nearby where there are any. Adjusted, a single day lands within ×1.5 of what a monitor would read about two times in three; unadjusted, it can be off by half or double. Treat them as a guide, not a measurement.

City7-day estimateBand
Béziers≈ 8 µg/m³Good
Narbonne≈ 10 µg/m³Moderate
Carcassonne≈ 6 µg/m³Good
Alès≈ 7 µg/m³Good
Sète≈ 7 µg/m³Good
Colomiers≈ 7 µg/m³Good
Tournefeuille≈ 7 µg/m³Good
Auch≈ 7 µg/m³Good
Muret≈ 7 µg/m³Good
Blagnac≈ 7 µg/m³Good
Cahors≈ 5 µg/m³Good
Millau≈ 5 µg/m³Good
Agde≈ 10 µg/m³Moderate
Frontignan≈ 7 µg/m³Good
Bagnols-sur-Cèze≈ 9 µg/m³Moderate
Plaisance-du-Touch≈ 7 µg/m³Good
Mauguio≈ 8 µg/m³Good
Castelnau-le-Lez≈ 8 µg/m³Good
Lattes≈ 8 µg/m³Good
Pamiers≈ 8 µg/m³Good
Balma≈ 6 µg/m³Good
Cugnaux≈ 7 µg/m³Good

Bad-air episodes in Occitanie

Times when many cities around here had PM2.5 at twice their usual or more on the same days.

Use this board

SmogRank, most polluted cities in Occitanie, France, PM2.5, last 30 days to 6 Oct 2026, 22:00 UTC, smogrank.com/fr/region/occitanie?w=30d.

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You're welcome to reuse a single chart, image or figure with this citation and a link. Terms. Raw monitor readings in bulk are published by OpenAQ, under each provider's licence.

Updated 2026-10-06 22:07 UTC. Values are PM2.5 (fine particles), the median of each city's monitors, as the US AQI PM2.5 sub-index.