What is the air quality in Chelmsford today?

The current Air Quality Index (AQI) in Chelmsford is 13 (Good). PM2.5 concentration is 3.1 µg/m³.

What is the temperature in Chelmsford right now?

The current temperature in Chelmsford is 8.2°C (feels like 3.5°C). Humidity is 90.9% and wind speed is 40.0 km/h.

Is it safe to go outside in Chelmsford?

Air quality is satisfactory. Enjoy outdoor activities. The UV Index is 0.7 (Low).

Air Quality in Chelmsford, United Kingdom

Drizzle

8.2°C · 90.9% humidity

8.2°

Feels 3.5°

Good

Air quality is satisfactory. Enjoy outdoor activities.

1 station

Nearby Monitoring Stations

AQI Forecast Calibrated

8 12am

13 3am

9 6am

9 9am

9 12pm

9 3pm

9 6pm

9 9pm

Station readings 6h ago

AQI 8

PM2.5 2.0 µg/m³ · 6h ago

CAMS model adj -16

Air Quality Index Trend

25h · 1 stn

View full history →

Chelmsford's air quality is shaped by traffic emissions and residential heating. Pollution levels tend to peak during winter months when cold air traps emissions close to ground level.

90.9%

Humidity

40.0 km/h

Wind WNW

1019.8 hPa

Pressure

0.7

UV Low

GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲

3.1 µg/m³

PM10

13.7 µg/m³

050100150200300500

What is the weather forecast for Chelmsford?

Temperature & Precipitation

PM2.5 Trend

25h · 1 station

PM2.53.1 µg/m³ ✓ WHO

Good

PM1013.7 µg/m³

Good

UV INDEX0.7

Low

Station readings (1 station within 25 km)

3.1

Median

3.1

Average

3.1

Low

3.1

High

PM2.5 µg/m³ · Model: 5.9 · Bias: +2.8

What is the 7-day forecast for Chelmsford?

06-09

17.4° 8.2°

0.19 mm

06-10

15.2° 11.0°

8.88 mm

06-11

26.4° 14.2°

2.63 mm

06-12

20.9° 10.1°

06-13

22.7° 9.3°

0.19 mm

06-14

17.8° 10.9°

2.63 mm

06-15

15.3° 10.5°

8.06 mm

Both models agree Avg diff: 3.9°C

Where are air quality stations near Chelmsford?

Stanford-le-Hope Roadside, United Kingdom

24.3 km PM2.5: 6.0 µg/m³

Stanford-le-Hope Roadside, United Kingdom

24.3 km PM2.5: 16.9 µg/m³

Stanford-le-Hope Roadside, United Kingdom

24.3 km PM2.5: 2.9 µg/m³

–

united-kingdom-bishops-stortford-edens-close

25.3 km 14.0°C 55.6% RH PM2.5: 0.0 µg/m³ PM10: 0.0 µg/m³

Southend-on-Sea, United Kingdom

25.7 km PM2.5: 7.7 µg/m³

Southend-on-Sea, United Kingdom

25.7 km PM2.5: 15.9 µg/m³

What cities are near Chelmsford?

15 Billericay 33 Witham 20 Maldon 17 Wickford 32 Braintree 18 Brentwood 15 Basildon 19 Rayleigh 16 Pitsea 18 South Benfleet

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Data sources: AQI from ground-level monitoring stations via AQICN. Weather forecast from ECMWF (IFS & CAMS models). AQI calculated using US EPA standard. Updated 2026-06-09T02:42 UTC.