SmogRank / Episodes / The Netherlands
Bad-air episodes in The Netherlands
35 times since January 2023, many cities in The Netherlands had air at least twice as dirty as their usual for the time of year on the same days. The largest reached 608 cities: Central Europe, February 2023.
2026
- France and Belgium, June 202625 June 2026, 1 day13 cities39Unna
- Central Europe, March 202618 to 25 March 2026, 8 days361 cities136Łask
- Central Europe, March 20261 to 12 March 2026, 12 days442 cities109Radomsko
- Central Europe, January and February 202612 January to 12 February 2026, 32 days498 cities252Travnik
- Central Europe, December 2025 to January 202625 December 2025 to 2 January 2026, 9 days170 cities110Kempten (Allgäu)
2025
- Central Europe, November 202522 to 23 November 2025, 2 days53 cities74Żary
- Eastern Europe, November 20258 to 10 November 2025, 3 days71 cities93Żywiec
- Germany, Belgium and The Netherlands, August 202513 to 14 August 2025, 2 days16 cities29Krefeld
- United Kingdom, May 20251 to 2 May 2025, 2 days9 cities38Clacton-on-Sea
- Belgium and United Kingdom, April 202512 April 2025, 1 day16 cities31Evergem
- Central Europe, March 202519 to 30 March 2025, 12 days333 cities83Kikinda
- Central Europe, March 20253 to 13 March 2025, 11 days458 cities152Negotin
- Central Europe, February and March 202514 February to 1 March 2025, 16 days513 cities178Krotoszyn
- Central Europe, February 20251 to 14 February 2025, 14 days503 cities179Banja Luka
- Central Europe, January 202514 to 23 January 2025, 10 days383 cities252Sarajevo
- Eastern Europe, January 202522 to 23 January 2025, 2 days123 cities145Żywiec
- Western Europe, January 202510 to 12 January 2025, 3 days50 cities53Le Havre
- Eastern Europe, December 2024 to January 202524 December 2024 to 3 January 2025, 11 days276 cities245Opole
2024
- Western Europe, December 202412 to 14 December 2024, 3 days75 cities57Sallanches
- Western Europe, November 20245 to 7 November 2024, 3 days38 cities38Grays
- United Kingdom and The Netherlands, September 202419 to 20 September 2024, 2 days13 cities33Canterbury
- Belgium, France and 2 more countries, August 20241 to 2 August 2024, 2 days23 cities33Menen
- Belgium, May 20249 to 10 May 2024, 2 days18 cities39Menen
- Belgium, May 20242 May 2024, 1 day24 cities40Lochristi
- United Kingdom and The Netherlands, March 202411 to 12 March 2024, 2 days20 cities38Dartford
- Central Europe, February and March 202428 February to 10 March 2024, 12 days264 cities90Otwock
- Central Europe, January 20248 to 27 January 2024, 20 days449 cities244Czechowice-Dziedzice
- Western Europe, January 202414 to 16 January 2024, 3 days117 cities60Manlleu
2023
- Belgium and Germany, May 202322 May 2023, 1 day26 cities38Andenne
- Central Europe, April 20239 to 10 April 2023, 2 days67 cities58Jastrzębie Zdrój
- Belgium and France, April 20235 April 2023, 1 day9 cities31Roeselare
- Central Europe, February and March 202328 February to 4 March 2023, 5 days274 cities148Radomsko
- Central Europe, February 20236 to 25 February 2023, 20 days608 cities137Banja Luka
- France and The Netherlands, January 202329 January 2023, 1 day9 cities35Valenciennes
- France, The Netherlands and United Kingdom, January 202321 to 25 January 2023, 5 days66 cities52Tilburg
Each row: one bar per day, as tall as the number of cities counted that day and coloured by their median level; the number of cities; the highest daily reading and where. An episode is a run of days when many cities close to each other (four or more within 350 km on a day, 8 or more in all) each had a daily PM2.5 mean of at least 25 µg/m³ and at least 2 times their usual for that time of year. Found in our own measurements, not picked by hand. How we find episodes.