SmogRank / The Netherlands / North Brabant
Air quality in Waalre
North Brabant, The Netherlands. Over the last 24 hours its air rated Moderate, the 298th most polluted of 1,340 cities measured.
24-hour average 55US AQI
Moderate PM2.5 11.5 µg/m³, 0.8× the WHO 24-hour guideline. The figure the 24-hour ranking uses.
Latest hour: 58 US AQI (12.7 µg/m³), 03:00 local time
About 2.0× its usual for early October (5.8 µg/m³).
Where Waalre ranks 24 hours #298 of 1,340, at 55 US AQI (11.5 µg/m³)
7 days #688 of 2,680, at 52 US AQI (9.6 µg/m³)
30 days #1,419 of 2,888, at 37 US AQI (6.7 µg/m³)
This year #1,048 of 2,734, at 52 US AQI (9.8 µg/m³)
Why it ranks here Seasonal. Over the past year its worst months were January, March, averaging up to 16.9 µg/m³ against 5.7 in its cleanest month. Seasonal peaks usually come from heating, crop burning, fire or dust seasons.
Based on Waalre's own measurements; causes are the usual kinds for a pattern like this, not a confirmed source.
Bad-air episodes that reached Waalre Europe, 18 to 25 March 2026 18 to 25 March 2026, 8 days 430 cities136 µg/m³ peak, Łask Europe, 1 to 12 March 2026 1 to 12 March 2026, 12 days 532 cities109 µg/m³ peak, Radomsko Europe, January and February 2026 12 January to 12 February 2026, 32 days 625 cities252 µg/m³ peak, Travnik Europe, December 2025 to January 2026 25 December 2025 to 2 January 2026, 9 days 189 cities110 µg/m³ peak, Kempten (Allgäu) Europe, March 2025 19 to 30 March 2025, 12 days 401 cities83 µg/m³ peak, Kikinda Germany, Poland and 25 more countries, March 2025 3 to 13 March 2025, 11 days 553 cities152 µg/m³ peak, Negotin Europe, 14 February to 1 March 2025 14 February to 1 March 2025, 16 days 619 cities178 µg/m³ peak, Krotoszyn Europe, 1 to 14 February 2025 1 to 14 February 2025, 14 days 628 cities179 µg/m³ peak, Banja Luka Times when Waalre and many cities around it had PM2.5 at twice their usual or more on the same days. Latest 8 of 17. All episodes .
The last 12 months, day by day
1 10 20 31 Nov 2025 Dec Jan 2026 Feb Mar Apr May Jun Jul Aug Sep Oct 2025-11-01: 6.3 µg/m³ 2025-11-02: 4.5 µg/m³ 2025-11-03: 6.2 µg/m³ 2025-11-04: 6.5 µg/m³ 2025-11-05: 6.7 µg/m³ 2025-11-06: 9.6 µg/m³ 2025-11-07: 13.9 µg/m³ 2025-11-08: 14.2 µg/m³ 2025-11-09: 14.3 µg/m³ 2025-11-10: 9.7 µg/m³ 2025-11-11: 7.3 µg/m³ 2025-11-12: 7.1 µg/m³ 2025-11-13: 9.6 µg/m³ 2025-11-14: 12.6 µg/m³ 2025-11-15: 16.0 µg/m³ 2025-11-16: 8.0 µg/m³ 2025-11-17: 7.7 µg/m³ 2025-11-18: 12.6 µg/m³ 2025-11-19: no daily value, under 18 hours of readings, or readings that failed our checks 2025-11-20: no daily value, under 18 hours of readings, or readings that failed our checks 2025-11-21: no daily value, under 18 hours of readings, or readings that failed our checks 2025-11-22: no daily value, under 18 hours of readings, or readings that failed our checks 2025-11-23: 8.4 µg/m³ 2025-11-24: 6.6 µg/m³ 2025-11-25: no daily value, under 18 hours of readings, or readings that failed our checks 2025-11-26: no daily value, under 18 hours of readings, or readings that failed our checks 2025-11-27: no daily value, under 18 hours of readings, or readings that failed our checks 2025-11-28: 5.3 µg/m³ 2025-11-29: no daily value, under 18 hours of readings, or readings that failed our checks 2025-11-30: 6.4 µg/m³ 2025-12-01: no daily value, under 18 hours of readings, or readings that failed our checks 2025-12-02: no daily value, under 18 hours of readings, or readings that failed our checks 2025-12-03: 9.5 µg/m³ 2025-12-04: 7.3 µg/m³ 2025-12-05: 10.3 µg/m³ 2025-12-06: 5.4 µg/m³ 2025-12-07: no daily value, under 18 hours of readings, or readings that failed our checks 2025-12-08: 6.1 µg/m³ 2025-12-09: no daily value, under 18 hours of readings, or readings that failed our checks 2025-12-10: no daily value, under 18 hours of readings, or readings that failed our checks 2025-12-11: 10.6 µg/m³ 2025-12-12: no daily value, under 18 hours of readings, or readings that failed our checks 2025-12-13: no daily value, under 18 hours of readings, or readings that failed our checks 2025-12-14: 10.0 µg/m³ 2025-12-15: 10.3 µg/m³ 2025-12-16: 11.6 µg/m³ 2025-12-17: 14.7 µg/m³ 2025-12-18: 8.1 µg/m³ 2025-12-19: 8.2 µg/m³ 2025-12-20: 15.6 µg/m³ 2025-12-21: no daily value, under 18 hours of readings, or readings that failed our checks 2025-12-22: 15.7 µg/m³ 2025-12-23: 14.7 µg/m³ 2025-12-24: 9.1 µg/m³ 2025-12-25: 12.1 µg/m³ 2025-12-26: 21.2 µg/m³ 2025-12-27: 20.4 µg/m³ 2025-12-28: 16.8 µg/m³ 2025-12-29: 17.2 µg/m³ 2025-12-30: 10.5 µg/m³ 2025-12-31: 22.1 µg/m³ 2026-01-01: 36.7 µg/m³ 2026-01-02: 3.6 µg/m³ 2026-01-03: 7.7 µg/m³ 2026-01-04: 7.1 µg/m³ 2026-01-05: 11.6 µg/m³ 2026-01-06: 14.6 µg/m³ 2026-01-07: 7.9 µg/m³ 2026-01-08: 12.6 µg/m³ 2026-01-09: 6.0 µg/m³ 2026-01-10: 15.0 µg/m³ 2026-01-11: 20.9 µg/m³ 2026-01-12: 5.7 µg/m³ 2026-01-13: 4.9 µg/m³ 2026-01-14: 9.2 µg/m³ 2026-01-15: 5.2 µg/m³ 2026-01-16: 5.8 µg/m³ 2026-01-17: 12.3 µg/m³ 2026-01-18: 19.1 µg/m³ 2026-01-19: 21.4 µg/m³ 2026-01-20: 19.2 µg/m³ 2026-01-21: 14.4 µg/m³ 2026-01-22: 24.6 µg/m³ 2026-01-23: 21.8 µg/m³ 2026-01-24: 24.5 µg/m³ 2026-01-25: 43.5 µg/m³ 2026-01-26: 50.3 µg/m³ 2026-01-27: 23.5 µg/m³ 2026-01-28: 17.3 µg/m³ 2026-01-29: 28.3 µg/m³ 2026-01-30: no daily value, under 18 hours of readings, or readings that failed our checks 2026-01-31: 11.0 µg/m³ 2026-02-01: 10.6 µg/m³ 2026-02-02: 13.0 µg/m³ 2026-02-03: 19.9 µg/m³ 2026-02-04: 7.7 µg/m³ 2026-02-05: 26.9 µg/m³ 2026-02-06: 16.1 µg/m³ 2026-02-07: 7.8 µg/m³ 2026-02-08: 13.2 µg/m³ 2026-02-09: 13.8 µg/m³ 2026-02-10: 10.5 µg/m³ 2026-02-11: 6.1 µg/m³ 2026-02-12: 6.2 µg/m³ 2026-02-13: 6.5 µg/m³ 2026-02-14: 11.7 µg/m³ 2026-02-15: 14.7 µg/m³ 2026-02-16: 7.1 µg/m³ 2026-02-17: 6.9 µg/m³ 2026-02-18: 12.3 µg/m³ 2026-02-19: 8.6 µg/m³ 2026-02-20: 13.1 µg/m³ 2026-02-21: 9.4 µg/m³ 2026-02-22: 4.8 µg/m³ 2026-02-23: 8.3 µg/m³ 2026-02-24: 7.5 µg/m³ 2026-02-25: 6.9 µg/m³ 2026-02-26: 9.6 µg/m³ 2026-02-27: 9.8 µg/m³ 2026-02-28: 6.7 µg/m³ 2026-03-01: 7.2 µg/m³ 2026-03-02: 8.3 µg/m³ 2026-03-03: 16.6 µg/m³ 2026-03-04: 29.9 µg/m³ 2026-03-05: 22.7 µg/m³ 2026-03-06: 18.8 µg/m³ 2026-03-07: 37.5 µg/m³ 2026-03-08: 36.7 µg/m³ 2026-03-09: 35.9 µg/m³ 2026-03-10: 14.5 µg/m³ 2026-03-11: 9.3 µg/m³ 2026-03-12: 8.3 µg/m³ 2026-03-13: 6.2 µg/m³ 2026-03-14: 5.5 µg/m³ 2026-03-15: 11.5 µg/m³ 2026-03-16: 8.7 µg/m³ 2026-03-17: 8.8 µg/m³ 2026-03-18: 9.0 µg/m³ 2026-03-19: 23.3 µg/m³ 2026-03-20: 21.5 µg/m³ 2026-03-21: 14.1 µg/m³ 2026-03-22: 22.3 µg/m³ 2026-03-23: 27.8 µg/m³ 2026-03-24: 30.6 µg/m³ 2026-03-25: 5.3 µg/m³ 2026-03-26: 6.1 µg/m³ 2026-03-27: 9.0 µg/m³ 2026-03-28: 8.2 µg/m³ 2026-03-29: 8.2 µg/m³ 2026-03-30: 6.6 µg/m³ 2026-03-31: 9.4 µg/m³ 2026-04-01: 10.5 µg/m³ 2026-04-02: 13.8 µg/m³ 2026-04-03: 7.8 µg/m³ 2026-04-04: 9.4 µg/m³ 2026-04-05: 6.3 µg/m³ 2026-04-06: 7.4 µg/m³ 2026-04-07: 8.8 µg/m³ 2026-04-08: 8.6 µg/m³ 2026-04-09: 11.5 µg/m³ 2026-04-10: 8.3 µg/m³ 2026-04-11: 10.6 µg/m³ 2026-04-12: 7.3 µg/m³ 2026-04-13: 10.8 µg/m³ 2026-04-14: 14.2 µg/m³ 2026-04-15: 13.4 µg/m³ 2026-04-16: 9.6 µg/m³ 2026-04-17: 11.2 µg/m³ 2026-04-18: 12.3 µg/m³ 2026-04-19: 6.2 µg/m³ 2026-04-20: 5.9 µg/m³ 2026-04-21: 11.2 µg/m³ 2026-04-22: 7.6 µg/m³ 2026-04-23: 7.9 µg/m³ 2026-04-24: 9.2 µg/m³ 2026-04-25: 10.1 µg/m³ 2026-04-26: 7.8 µg/m³ 2026-04-27: 9.0 µg/m³ 2026-04-28: 8.2 µg/m³ 2026-04-29: 5.2 µg/m³ 2026-04-30: 5.9 µg/m³ 2026-05-01: 9.0 µg/m³ 2026-05-02: 11.6 µg/m³ 2026-05-03: 6.8 µg/m³ 2026-05-04: 10.0 µg/m³ 2026-05-05: 8.6 µg/m³ 2026-05-06: 7.4 µg/m³ 2026-05-07: 6.1 µg/m³ 2026-05-08: 13.6 µg/m³ 2026-05-09: 13.1 µg/m³ 2026-05-10: 9.9 µg/m³ 2026-05-11: 4.4 µg/m³ 2026-05-12: 5.0 µg/m³ 2026-05-13: 6.0 µg/m³ 2026-05-14: 4.3 µg/m³ 2026-05-15: 5.4 µg/m³ 2026-05-16: 5.7 µg/m³ 2026-05-17: 4.6 µg/m³ 2026-05-18: 4.9 µg/m³ 2026-05-19: 5.2 µg/m³ 2026-05-20: 6.5 µg/m³ 2026-05-21: 9.2 µg/m³ 2026-05-22: 10.7 µg/m³ 2026-05-23: 11.7 µg/m³ 2026-05-24: 11.2 µg/m³ 2026-05-25: 8.1 µg/m³ 2026-05-26: 10.2 µg/m³ 2026-05-27: 8.0 µg/m³ 2026-05-28: 8.3 µg/m³ 2026-05-29: 12.5 µg/m³ 2026-05-30: 10.3 µg/m³ 2026-05-31: 10.3 µg/m³ 2026-06-01: 5.9 µg/m³ 2026-06-02: 4.6 µg/m³ 2026-06-03: 3.8 µg/m³ 2026-06-04: 1.7 µg/m³ 2026-06-05: 4.5 µg/m³ 2026-06-06: 4.0 µg/m³ 2026-06-07: 6.0 µg/m³ 2026-06-08: 5.3 µg/m³ 2026-06-09: 2.6 µg/m³ 2026-06-10: no daily value, under 18 hours of readings, or readings that failed our checks 2026-06-11: 4.4 µg/m³ 2026-06-12: 3.2 µg/m³ 2026-06-13: 7.4 µg/m³ 2026-06-14: 5.0 µg/m³ 2026-06-15: 5.1 µg/m³ 2026-06-16: no daily value, under 18 hours of readings, or readings that failed our checks 2026-06-17: 8.9 µg/m³ 2026-06-18: 6.1 µg/m³ 2026-06-19: 5.6 µg/m³ 2026-06-20: 8.3 µg/m³ 2026-06-21: no daily value, under 18 hours of readings, or readings that failed our checks 2026-06-22: no daily value, under 18 hours of readings, or readings that failed our checks 2026-06-23: 9.0 µg/m³ 2026-06-24: 14.4 µg/m³ 2026-06-25: 15.7 µg/m³ 2026-06-26: 14.4 µg/m³ 2026-06-27: 14.9 µg/m³ 2026-06-28: 7.9 µg/m³ 2026-06-29: no daily value, under 18 hours of readings, or readings that failed our checks 2026-06-30: 7.7 µg/m³ 2026-07-01: 9.7 µg/m³ 2026-07-02: 5.4 µg/m³ 2026-07-03: no daily value, under 18 hours of readings, or readings that failed our checks 2026-07-04: no daily value, under 18 hours of readings, or readings that failed our checks 2026-07-05: no daily value, under 18 hours of readings, or readings that failed our checks 2026-07-06: no daily value, under 18 hours of readings, or readings that failed our checks 2026-07-07: no daily value, under 18 hours of readings, or readings that failed our checks 2026-07-08: 5.7 µg/m³ 2026-07-09: 6.2 µg/m³ 2026-07-10: 8.3 µg/m³ 2026-07-11: 8.3 µg/m³ 2026-07-12: 6.0 µg/m³ 2026-07-13: no daily value, under 18 hours of readings, or readings that failed our checks 2026-07-14: no daily value, under 18 hours of readings, or readings that failed our checks 2026-07-15: no daily value, under 18 hours of readings, or readings that failed our checks 2026-07-16: 9.8 µg/m³ 2026-07-17: 11.7 µg/m³ 2026-07-18: 12.1 µg/m³ 2026-07-19: 6.4 µg/m³ 2026-07-20: 5.6 µg/m³ 2026-07-21: 5.2 µg/m³ 2026-07-22: 4.1 µg/m³ 2026-07-23: 4.5 µg/m³ 2026-07-24: 6.3 µg/m³ 2026-07-25: 8.1 µg/m³ 2026-07-26: 7.5 µg/m³ 2026-07-27: 4.0 µg/m³ 2026-07-28: 3.8 µg/m³ 2026-07-29: 5.4 µg/m³ 2026-07-30: 10.1 µg/m³ 2026-07-31: 12.6 µg/m³ 2026-08-01: 3.3 µg/m³ 2026-08-02: 5.3 µg/m³ 2026-08-03: 6.7 µg/m³ 2026-08-04: 9.8 µg/m³ 2026-08-05: 5.4 µg/m³ 2026-08-06: 4.6 µg/m³ 2026-08-07: 4.5 µg/m³ 2026-08-08: 4.9 µg/m³ 2026-08-09: 5.9 µg/m³ 2026-08-10: 5.0 µg/m³ 2026-08-11: 3.5 µg/m³ 2026-08-12: 4.1 µg/m³ 2026-08-13: 5.8 µg/m³ 2026-08-14: 8.9 µg/m³ 2026-08-15: 10.4 µg/m³ 2026-08-16: 3.6 µg/m³ 2026-08-17: 5.5 µg/m³ 2026-08-18: 7.7 µg/m³ 2026-08-19: 6.6 µg/m³ 2026-08-20: 5.9 µg/m³ 2026-08-21: 3.5 µg/m³ 2026-08-22: 3.9 µg/m³ 2026-08-23: 7.6 µg/m³ 2026-08-24: 5.7 µg/m³ 2026-08-25: 5.8 µg/m³ 2026-08-26: no daily value, under 18 hours of readings, or readings that failed our checks 2026-08-27: 9.8 µg/m³ 2026-08-28: 7.5 µg/m³ 2026-08-29: 2.4 µg/m³ 2026-08-30: 3.8 µg/m³ 2026-08-31: 3.0 µg/m³ 2026-09-01: 6.6 µg/m³ 2026-09-02: no daily value, under 18 hours of readings, or readings that failed our checks 2026-09-03: 3.4 µg/m³ 2026-09-04: 1.6 µg/m³ 2026-09-05: 4.4 µg/m³ 2026-09-06: 4.3 µg/m³ 2026-09-07: 4.9 µg/m³ 2026-09-08: no daily value, under 18 hours of readings, or readings that failed our checks 2026-09-09: 3.6 µg/m³ 2026-09-10: 4.2 µg/m³ 2026-09-11: 4.6 µg/m³ 2026-09-12: 6.6 µg/m³ 2026-09-13: 4.3 µg/m³ 2026-09-14: 6.7 µg/m³ 2026-09-15: 5.2 µg/m³ 2026-09-16: 5.1 µg/m³ 2026-09-17: 3.3 µg/m³ 2026-09-18: 6.0 µg/m³ 2026-09-19: 6.4 µg/m³ 2026-09-20: 3.8 µg/m³ 2026-09-21: no daily value, under 18 hours of readings, or readings that failed our checks 2026-09-22: 7.6 µg/m³ 2026-09-23: 8.9 µg/m³ 2026-09-24: 5.4 µg/m³ 2026-09-25: 6.4 µg/m³ 2026-09-26: 8.1 µg/m³ 2026-09-27: 11.1 µg/m³ 2026-09-28: 11.3 µg/m³ 2026-09-29: 14.6 µg/m³ 2026-09-30: 10.1 µg/m³ 2026-10-01: 6.1 µg/m³ 2026-10-02: 5.3 µg/m³ 2026-10-03: 8.5 µg/m³ 2026-10-04: 11.1 µg/m³ 38 of 331 measured days were over the WHO 24-hour guideline (15 µg/m³). 34 days without a value, all with under 18 hours of readings or readings that failed our checks; point at a grey square for its reason (why days go blank ). One row per month, one square per local day. Good 0–50
Moderate 51–100
Sensitive groups 101–150
Unhealthy 151–200
Very unhealthy 201–300
Hazardous 301+
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
Last 4 days, hour by hour 15 30 4 Oct 03:00 local, 2026-10-04 01:00 UTC: 10.9 µg/m³ 4 Oct 04:00 local, 2026-10-04 02:00 UTC: 11.4 µg/m³ 4 Oct 05:00 local, 2026-10-04 03:00 UTC: 11.3 µg/m³ 4 Oct 06:00 local, 2026-10-04 04:00 UTC: 11.6 µg/m³ 4 Oct 07:00 local, 2026-10-04 05:00 UTC: 11.2 µg/m³ 4 Oct 08:00 local, 2026-10-04 06:00 UTC: 11.6 µg/m³ 4 Oct 09:00 local, 2026-10-04 07:00 UTC: 15.5 µg/m³ 4 Oct 10:00 local, 2026-10-04 08:00 UTC: 13.6 µg/m³ 4 Oct 11:00 local, 2026-10-04 09:00 UTC: 11.1 µg/m³ 4 Oct 12:00 local, 2026-10-04 10:00 UTC: 11.4 µg/m³ 4 Oct 13:00 local, 2026-10-04 11:00 UTC: 8.6 µg/m³ 4 Oct 14:00 local, 2026-10-04 12:00 UTC: 6.2 µg/m³ 4 Oct 15:00 local, 2026-10-04 13:00 UTC: 5.3 µg/m³ 4 Oct 16:00 local, 2026-10-04 14:00 UTC: 7.1 µg/m³ 4 Oct 17:00 local, 2026-10-04 15:00 UTC: 10.7 µg/m³ 4 Oct 18:00 local, 2026-10-04 16:00 UTC: 9.4 µg/m³ 4 Oct 19:00 local, 2026-10-04 17:00 UTC: 9.8 µg/m³ 4 Oct 20:00 local, 2026-10-04 18:00 UTC: 10.8 µg/m³ 4 Oct 21:00 local, 2026-10-04 19:00 UTC: 11.8 µg/m³ 4 Oct 22:00 local, 2026-10-04 20:00 UTC: 15.2 µg/m³ 4 Oct 23:00 local, 2026-10-04 21:00 UTC: 17.9 µg/m³ 5 Oct 00:00 local, 2026-10-04 22:00 UTC: 16.1 µg/m³ 5 Oct 01:00 local, 2026-10-04 23:00 UTC: 13.8 µg/m³ 5 Oct 02:00 local, 2026-10-05 00:00 UTC: 12.5 µg/m³ 5 Oct 03:00 local, 2026-10-05 01:00 UTC: 12.7 µg/m³ Oct 2 Oct 3 Oct 4 Oct 5 Waalre's local time; hover a bar for UTC. Dashed line: WHO 24-hour guideline (15 µg/m³).
Where it stood each day Top 10 Top 100 #1 #10 #100 #1,000 #3,193 Nov Dec Jan Feb Mar Apr May Jun Jul Aug Sep #757 Its rank on each day's world board, #1 being the most polluted city that day. Higher is worse. Each gridline down is ten times the rank above it (#1, #10, #100, #1,000), so the top places get the most room. See it among every city .
2026 against 2025, month by month 15 Jan 2025: 12.6 µg/m³ Jan 2026: 16.9 µg/m³ Jan Feb 2025: 19.3 µg/m³ Feb 2026: 10.6 µg/m³ Feb Mar 2025: 15.5 µg/m³ Mar 2026: 15.7 µg/m³ Mar Apr 2025: 9.3 µg/m³ Apr 2026: 9.2 µg/m³ Apr May 2025: 4.7 µg/m³ May 2026: 8.3 µg/m³ May Jun 2025: 5.4 µg/m³ Jun 2026: 7.1 µg/m³ Jun Jul 2025: 4.9 µg/m³ Jul 2026: 7.3 µg/m³ Jul Aug 2025: 6.5 µg/m³ Aug 2026: 5.7 µg/m³ Aug Sep 2025: 5.3 µg/m³ Sep 2026: 6.2 µg/m³ Sep Oct 2025: 7.4 µg/m³ Oct Nov 2025: 9.1 µg/m³ Nov Dec 2025: 12.5 µg/m³ Dec Faded bars: 2025. A month shows once it has 10 measured days.
This week against past years This week This week: 9.6 µg/m³ 9.6 2025 2025: 10.7 µg/m³ 10.7 2024 2024: 4.5 µg/m³ 4.5 2023 no data Mean PM2.5 for 28 Sept to 4 Oct in each year. Dashed line: WHO 24-hour guideline.
Monitors
PM2.5 from 2 reference monitors, updated hourly. Only 1 of them reported in the last 24 hours.
Station Operator Type Veldhoven-EuropalaanCC BY 4.0 (RIVM Luchtmeetnet) Netherlands Reference Veldhoven-EuropalaanODC-BY OpenAQ admin Reference
The city's value is the median of its reference monitors each hour, when at least a third of them report (three are always enough); low-cost sensors are listed but not counted when reference monitors exist. Data via OpenAQ; licences as listed. How we rank . Embed this on your site .
Use this page SmogRank, PM2.5 daily means, Waalre, The Netherlands, 5 Oct 2025 – 4 Oct 2026, smogrank.com/nl/waalre (accessed 5 Oct 2026).
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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.
Other cities in The Netherlands 30-day averages, US AQI. All of The Netherlands .
Updated 2026-10-05 03:07 UTC. Values are PM2.5 (fine particles), the median of each city's monitors, as the US AQI PM2.5 sub-index.