Air Quality History for Chelmsford, United Kingdom
Historical PM2.5 and AQI trend from monitoring stations near Chelmsford, United Kingdom.
5
Current AQI
Good Station
Good Station
Air Quality Index Station
201hPM2.5 Station
201h · 1 stationTemperature GFS model
80ptPrecipitation GFS model
mm/dayDaily Summary Station
| Date | AQI | Range | PM2.5 avg | PM10 avg | Hours | Stations |
|---|---|---|---|---|---|---|
| 2026-10-21 | 14 | 4–29 | 3.3 µg/m³ | 3.7 | 10h | 1 |
| 2026-10-20 | 93 | 20–125 | 32.1 µg/m³ | 35.7 | 24h | 1 |
| 2026-10-19 | 46 | 5–89 | 12.6 µg/m³ | 13.9 | 20h | 1 |
| 2026-10-16 | 3 | 2–4 | 0.8 µg/m³ | 1.1 | 5h | 1 |
| 2026-10-15 | 12 | 3–58 | 3.0 µg/m³ | 3.3 | 14h | 1 |
| 2026-10-14 | 7 | 2–13 | 1.7 µg/m³ | 2.0 | 7h | 1 |
| 2026-10-13 | 6 | 3–9 | 1.5 µg/m³ | 1.8 | 5h | 1 |
| 2026-10-12 | 9 | 4–23 | 2.1 µg/m³ | 2.3 | 13h | 1 |
| 2026-10-11 | 20 | 4–65 | 5.3 µg/m³ | 5.9 | 7h | 1 |
| 2026-10-10 | 4 | 4–4 | 1.0 µg/m³ | 1.0 | 1h | 1 |
| 2026-10-08 | 4 | 3–4 | 0.9 µg/m³ | 1.2 | 3h | 1 |
| 2026-10-07 | 22 | 1–82 | 5.6 µg/m³ | 6.1 | 17h | 1 |
| 2026-10-06 | 10 | 3–19 | 2.4 µg/m³ | 2.6 | 13h | 1 |
| 2026-10-05 | 18 | 4–41 | 4.2 µg/m³ | 4.7 | 10h | 1 |
| 2026-10-04 | 30 | 10–68 | 7.5 µg/m³ | 8.0 | 19h | 1 |
| 2026-10-03 | 21 | 3–70 | 5.4 µg/m³ | 5.8 | 18h | 1 |
| 2026-10-02 | 4 | 3–7 | 1.1 µg/m³ | 1.4 | 9h | 1 |
| 2026-10-01 | 6 | 4–8 | 1.4 µg/m³ | 1.7 | 6h | 1 |