Running on Bonfire Night: Smoke, Air Quality and Safety Tips (UK 2026)

Can you go running on Bonfire Night? Yes: for most healthy runners it is fine, as long as you run in daylight or early evening before displays start, and pick a route away from bonfires and firework smoke. The air around 5 November can carry short, sharp spikes of fine-particle pollution after dark, so in Bonfire week your timing and route matter more than your pace. Here is what the monitoring data shows and how to train around it.

When is Bonfire Night 2026, and why does the smoke last more than one night?

Bonfire Night falls on Thursday 5 November 2026. Because it lands midweek, many councils, schools and sports clubs will hold their organised displays on the nearest weekends instead, either Saturday 31 October and Sunday 1 November or Friday 6 to Sunday 8 November. Add private garden fireworks and you get a run of smoky evenings rather than a single night.

GOV.UK guidance says fireworks must not be set off between 11pm and 7am, except on Bonfire Night, when the cut-off is midnight, and on New Year's Eve, Diwali and Chinese New Year, when it is 1am. With the clocks having gone back on Sunday 25 October, the sun sets around 4.30pm in much of the UK in early November, so the window for fireworks is mostly dusk to midnight. That leaves mornings and lunchtimes largely clear.

What happens to air quality around 5 November?

Bonfires and fireworks release gases and fine particles. The ones that matter most are PM2.5, particles smaller than 2.5 microns across, small enough to be breathed deep into the lungs. The colours in fireworks come from metals, which end up in that smoke too.

The UK's national monitoring network, the Automatic Urban and Rural Network (AURN), has picked this up for years. In its Bonfire Night 2022 report for Defra, the network's average hourly PM2.5 over 5 and 6 November was almost twice the level of the rest of early November, and the highest single hourly reading was more than three times higher than any recorded on the other days.

The size of the spike depends heavily on the weather. The 2023 report found clear peaks on the evenings of 4 and 5 November, but they were much smaller than in 2018, likely because of wet weather. Cold, still air keeps smoke hanging around, while wind and rain help clear it. The National Centre for Atmospheric Science has also pointed out that people downwind of a display face considerably higher exposure than the wider area.

The practical takeaway: the pollution rise is real but mostly short, mostly after dark, and very local. That makes it easy to train around.

What is the Daily Air Quality Index, and how do you check it?

The Daily Air Quality Index (DAQI) is the UK's 1 to 10 scale for air pollution, a bit like the pollen count. It is based on five pollutants: ozone, nitrogen dioxide, sulphur dioxide and two sizes of particles (PM2.5 and PM10). The Met Office produces the forecast for Defra, with new forecasts each morning covering the next five days.

The easiest way to check it is the GOV.UK Check air quality service. Enter your postcode and you get the forecast for the next five days, hourly readings from nearby monitors and the option to sign up for air pollution alerts. Here is a summary of the official health advice for each band:

Summarised from Defra's Daily Air Quality Index health advice. Check the GOV.UK service for the full wording and your local forecast.

One important catch: the DAQI is a daily figure, and the forecast covers around 5,000 background locations rather than the field where your local display is. In 2023 the index stayed in the Low band across the whole national network, even though particle levels clearly peaked on Bonfire Night evening, and the report noted the daily index may underestimate short, sharp spikes. So treat a Low forecast as a green light for your morning run, not a guarantee about the air next to a bonfire at 8pm.

Should you run if you have asthma or a heart or lung condition?

This is one for your GP, asthma nurse or specialist, so follow their advice first, and check the air quality forecast daily in Bonfire week.

Ahead of Bonfire Night, the charity Asthma + Lung UK has advised people with asthma to keep using their preventer inhaler as prescribed, always carry their reliever, stand well back from fireworks and bonfires, and check which way the wind is blowing so they can avoid the smoke. It also notes that cold weather can be a trigger, that smoke lingers longest on still nights, and that if smoke has set off symptoms before, it may be safer to stay in. For year-round tips, see our guide on how to run with asthma.

When is the best time to run in Bonfire week?

Mornings and lunchtimes are mostly free of fresh firework smoke, and early evening is usually fine too if you finish before displays get going. On a cold, still night, smoke can hang around into the next morning, so if the air smells smoky when you step outside, keep the run easy or take it indoors. Here is a simple way to plan the fortnight:

How do you pick a smoke-free route?

• Know where the displays are. Check your council's events page. The park you usually run in may be the venue.
• Check the wind. Smoke drifts downwind, so plan your loop on the side of any display the wind is blowing from.
• Avoid busy roads. GOV.UK's air quality advice is to take routes with less traffic and keep as far from the road edge as you can.
• Run short loops near home. If you hit smoke or crowds, you can cut it short.
• Give displays and bonfires a wide berth. Never cut through a display area, and watch your footing for debris on paths the next morning.

How do you stay visible and safe in the dark?

If an evening run is the only option, make yourself easy to see. The Highway Code advises wearing reflective materials in the dark, such as armbands, sashes or jackets, which drivers can see up to three times as far away as non-reflective ones. Add a head torch or clip-on light, and expect distracted drivers near display sites.

Sudden bangs make anyone jump, so run with one earbud or none, stick to well-lit routes, and tell someone where you are going. Our winter running in the dark safety guide covers kit and lights in more detail.

What are the best indoor alternatives on smoky nights?

Missing one outdoor run will not undo your training, and a good indoor session keeps the week on track:

• Treadmill run. Swap like for like: an easy run stays easy, and an interval session can be done on the belt. Our treadmill workouts for runners has five sessions to beat the boredom.
• Home HIIT circuit. After a 5-minute warm-up, do 20 minutes of work: 4 rounds of 40 seconds on, 20 seconds off: squats, reverse lunges, mountain climbers, glute bridges and high knees. Finish with a 5-minute easy cool-down.
• Strength and mobility. A smoky evening is a good excuse for the strength session runners often skip.

GOV.UK's air quality advice is to make sure the room is well ventilated if you exercise indoors. This is also where a hybrid plan helps: Edge treats running, strength and HIIT as one plan, so swapping Thursday's outdoor run for an indoor session still fits the week. On Edge Pro, you can message a real coach to talk the swap through.

How do you look after your dog on fireworks nights?

The RSPCA advises walking dogs during daylight hours, making sure they cannot escape if there is a sudden noise, making sure they are microchipped in case they bolt, and never taking them to a fireworks display. So move dog runs to the morning, use a secure lead, and get home well before dusk.

The bottom line

Bonfire Night does not have to interrupt your training. Run in daylight, check the forecast, keep away from displays and busy roads, and have an indoor session ready for the smokiest evenings. A week or so of small tweaks and you are back to your usual routes.

This article is general guidance, not medical advice. If you are new to exercise, returning from injury, or managing a health condition, speak to your GP before starting, and see a physio for any niggle that does not settle.