This is a summary of the key findings of the report and priorities for the coming year.

Changes to pollutant levels and emissions in 2025

Air quality in Cambridge remained good during 2025, with concentrations of nitrogen dioxide (NO₂), PM₁₀ and PM₂.₅ all below national objectives and targets. NO₂ levels have now remained below the national objective for more than five years, leading to the revocation of the Cambridge Air Quality Management Area (AQMA) in January 2025.

Pollutant concentrations increased slightly during 2025 but remain well below historic levels and broadly stable compared with recent years. Traffic volumes were largely unchanged, while continued uptake of electric and low-emission vehicles, together with changes in travel behaviour such as increased home working, are helping to reduce emissions.

PM₁₀ and PM₂.₅ concentrations also remained stable. Most PM₂.₅ in Cambridge originates from regional sources, although local emissions from transport, domestic burning and construction continue to contribute.

The Greater Cambridge Air Quality Strategy continues to guide air quality improvements across the area, with a commitment to work towards World Health Organisation (WHO) air quality guidelines. This work also supports wider council priorities, including tackling climate change, improving public health, reducing inequalities and encouraging sustainable travel.

Air quality improvements have been achieved despite continued population and economic growth. Maintaining and further improving air quality while supporting future growth remains the key challenge.

What we will be working on in 2026/27

• Delivering the priorities set out in the Greater Cambridge Air Quality Strategy [PDF, 0.7MB].
• Progressing a city-wide Smoke Control Area and promoting cleaner burning practices.
• Supporting transport and infrastructure projects that improve public transport, walking and cycling.
• Helping to develop the Greater Cambridge Local Plan and associated air quality guidance.
• Raising awareness of air quality through communications, website updates and engagement with schools and communities.
• Supporting the transition to low-emission transport, including electric vehicle charging infrastructure and electric taxis.

What you can do

Walk or cycle for short journeys instead of driving, use public transport where possible, and consider car sharing, home working or switching to a low-emission vehicle. Avoid unnecessary engine idling.

If you burn solid fuel, only burn approved fuels in well-maintained appliances and never burn household waste.

Small changes can help reduce emissions, improve public health and support Cambridge's ambition to achieve WHO air quality guideline levels.