Firework Noise Levels: A Scientific Guide

How firework noise is measured

Firework noise is reported in decibels (dB), but the specific unit used by UK regulators is AI Max dB: the peak sound pressure reading with "A" frequency weighting (approximating the response of human hearing) and impulse time weighting (so the meter captures short, sharp bangs the way an ear does, rather than averaging them out).

The measurement protocol comes from British/European standard BS EN 15947. A calibrated noise meter is placed 1 m above ground at the standard-mandated distance from the firing point: 8 m for category F2 fireworks, 15 m for category F3. Multiple firings of the same article are averaged. Wind speed must be at or below 5 m/s, or the test is invalidated. Reference: OPSS / HSE Noise Testing of Fireworks, January 2023.

The dB scale is logarithmic. A 3 dB increase doubles the sound energy. A 10 dB increase is perceived as roughly twice as loud. That matters when comparing a 90 dB low-noise cake with a 120 dB rocket: the latter carries 1,000 times the energy.

Firework noise compared with everyday sounds

Sound	Typical level (dB)	Notes
Quiet rural night	20-30	Reference for "quiet"
Normal conversation	60	At 1 m
Vacuum cleaner	70	At user position
Washing machine on spin	75-80
Low-noise fireworks (Galactic range)	70-90	Measured at 8 m
Lawn mower	90	Hearing damage starts after sustained exposure
Heavy traffic	85	WHO threshold for hearing damage
Underground train	95-100	Passing, on platform
F3 rocket (HSE 2023 testing)	107-115	Measured at 15 m
Thunderclap (close)	120
UK consumer firework legal ceiling	120	At the regulatory test distance
Rock concert (front rows)	120	Immediate-pain threshold
Jet engine at 100 m	140	Above the consumer firework legal limit

Note that fireworks are impulsive sounds, not continuous, so direct comparison with steady-state sources (a lawn mower running for an hour) understates the startle effect on people, pets and wildlife. The peak still matters, particularly for hearing-damage risk.

Firework categories and what they mean for noise

UK consumer fireworks fall into three categories, set out in the Pyrotechnic Articles Safety Regulations 2015. The category does not lock the noise level to a specific number, but it does cap it and prescribe how it is measured.

Category F1: indoor and very close range

Defined in regulation as fireworks presenting "a very low hazard and negligible noise level", suitable for use in confined areas including inside domestic buildings. Indoor sparklers, party poppers, ice fountains and some small outdoor fountains sit here. Practical noise level is typically under 80 dB at 1 m. F1 is the natural choice for inside the house, on a wedding-cake table or a venue with a noise restriction.

Category F2: gardens and small displays

"Low hazard and low noise level, intended for outdoor use in confined areas." Tested at 8 m; the legal ceiling is 120 dB (AI Max) at that distance. Most garden cakes, smaller rockets, single shots and roman candles sold on the high street are F2. Spectator safety distance under BS EN 15947 is 15 m, at which the noise has typically dropped by another 5-6 dB from the test reading.

Category F3: open spaces and larger displays

"Medium hazard, for outdoor use in large open areas." Tested at 15 m; the legal ceiling is the same 120 dB (AI Max). Larger compound cakes and the bigger consumer rockets are typically F3. Spectator safety distance is 25 m. F3 fireworks contain more energetic compositions and a greater net explosive quantity (NEQ). The legal ceiling is the same 120 dB because F3 articles are tested further from the firing point.

What the actual testing found

The HSE tested 72 articles across 9 firework types for OPSS in 2022-2023. Of those, only 4 articles breached the 120 dB ceiling, all batteries of shot tubes (evenly split between F2 and F3). Category 3 rockets clustered between 107 and 115 dB. Category 2 fireworks showed greater variation than F3, partly because F2 includes a wider range of effect types and compositions.

The headline finding for buyers: category does not reliably predict loudness. A large F2 battery of shot tubes can be as loud as an F3 rocket, and an F3 fountain can be quieter than an F2 cake. The specific product matters more than the category. Where noise is the deciding factor, look at the manufacturer's stated effects (whistles, crackles and reports drive the dB upwards) or, better, pick from a curated low-noise range.

How noise drops with distance

The inverse square law gives a working rule for outdoor noise propagation: every doubling of distance reduces the sound level by approximately 6 dB. Real-world conditions modify this. Wind can carry sound, buildings reflect it, cold dense air at low altitude can refract sound back to the ground (the "inversion" effect that makes fireworks sound louder on still autumn nights). The table below applies the textbook attenuation to a 120 dB source.

Distance from firing point	Approx. level (from 120 dB source)
8 m (F2 test point)	120 dB
15 m (F2 spectator line)	~115 dB
25 m (F3 spectator line)	~110 dB
50 m	~104 dB
100 m	~98 dB
200 m	~92 dB
500 m	~84 dB
1 km	~78 dB

The practical takeaway: a neighbour 50 m down the road still hears something equivalent to a power tool running outside their window. The whole-village reach of large displays is real, particularly in flat or built-up environments where reflections add several dB back.

Why 85 dB matters, especially for pets

The 85 dB threshold is the World Health Organization's working limit for occupational noise exposure. Sustained exposure above this level can cause permanent hearing damage to the cochlear hair cells. Short impulsive peaks above 120 dB can cause immediate hearing damage, regardless of duration.

Dogs are more vulnerable than people for two reasons. They hear a wider frequency range, particularly the higher frequencies present in firework whistles and reports. They also detect sounds at roughly four times the distance a human can. The RSPCA, Dogs Trust and Cats Protection all report sharp increases in distress calls and behaviour-related vet visits around Bonfire Night and New Year. Repeated exposure can produce noise phobias that persist year-round.

Cats, rabbits and small mammals show similar sensitivity. Horses and livestock have well-documented bolting risks. The British Horse Society maintains a separate guidance note for keeping horses safe during the firework season.

Sources for further reading: RSPCA fireworks guidance, Dogs Trust fireworks advice.

UK noise law, curfew hours and penalties

Three pieces of legislation regulate firework noise and use in Great Britain:

• Fireworks Regulations 2004: sets the night-hours curfew and the public possession restrictions.
• Pyrotechnic Articles (Safety) Regulations 2015: sets the 120 dB ceiling at the prescribed test distance and the F1/F2/F3 category system.
• British/European Standard BS EN 15947: defines the test method (referenced by, but not part of, the Regulations).

Curfew hours

Setting off fireworks is prohibited between 11 pm and 7 am, with the following extensions:

• 5 November (Bonfire Night): until midnight.
• New Year's Eve: until 1 am on 1 January.
• Diwali (date varies): until 1 am the following day.
• Chinese New Year (date varies): until 1 am the following day.

The curfew applies to all consumer use of fireworks in England, Scotland and Wales. Northern Ireland has separate, stricter licensing rules.

Penalties

Use of fireworks outside permitted hours, sale to under-18s, possession in a public place by under-18s, or use of fireworks classified as F4 (display-only, not for consumer use) can result in a fine of up to £5,000, six months' imprisonment, or both. Local councils and police have powers to issue on-the-spot fines of £90 under fixed penalty notice provisions.

Excessive noise from a regular firing point on private land can be tackled by the local authority as a statutory nuisance under the Environmental Protection Act 1990, with abatement notices and fines for non-compliance.

Low-noise fireworks: what is actually different

"Low noise" or "quiet" fireworks are not silent. Every pyrotechnic article makes some noise as the lifting charge ignites and the effect develops. What low-noise products avoid is the high-energy report compositions that produce the loud bangs at the end of a shot: titanium salutes, flash powder reports, crackling micro-stars, whistle compositions.

The visual effects are still varied. Most low-noise fireworks rely on:

• Horsetails and willows: long, trailing colour effects with slow burn.
• Comets and tails: bright single trails of colour without a final break.
• Mines and silver effects: fast vertical sprays of sparks.
• Fan and palm effects: soft-edged colour spreads.

A well-built low-noise display will measure between 70 and 90 dB at the standard 8 m test distance, roughly the volume range from a washing machine to a lawn mower. The flip side is that the absence of bangs changes the rhythm of the display. Some people find this calmer, others miss the punctuation. For weddings, residential venues, pet-friendly events and households with young children or noise-sensitive family members, low-noise is usually the right choice.

Galactic's Low Noise collection currently holds 93 products curated against this criterion. Each entry lists the manufacturer's stated noise rating where available.

Practical tips: reducing impact on pets and neighbours

Tell people before the event. There is no legal duty to notify neighbours in the UK, but a card through letterboxes or a quick word reduces the surprise factor for people with pets, young children, autism or PTSD. Vulnerable neighbours can then plan accordingly.

Pick a date with care. Concentrating displays into the four exempt windows (5 November, NYE, Diwali, Chinese New Year) reduces the total number of disruption nights. A random Saturday in March hits unprepared neighbours the hardest.

Distance does the heavy lifting. A 200 m gap between firing point and the nearest house drops a 120 dB firework to roughly 92 dB at the listener. Still loud, but no longer in immediate-damage territory.

Choose low-noise where the audience is sensitive. Wedding venues, residential streets and family-only displays do not need the loudest products to look impressive. A well-designed low-noise set with horsetails, willows and silver mines delivers genuine spectacle at 75-85 dB.

Keep pets indoors with masking sound. Closed curtains, a familiar TV programme or radio at moderate volume, and a safe space (an interior room, ideally with no exterior wall) significantly reduces measured indoor sound levels. Sedatives are not generally advised without veterinary guidance. Speak to your vet in advance if a pet has a known noise phobia.

Buy from licensed retailers. Sub-£5,000-fine territory is where unlabelled or imported fireworks sit. Every firework legitimately sold in the UK has been CE/UKCA-marked and tested to BS EN 15947, which is the system that puts the 120 dB ceiling in place.

Sources and further reading

• OPSS / Health and Safety Executive, Noise Testing of Fireworks, final report, January 2023: PDF.
• Pyrotechnic Articles (Safety) Regulations 2015, Schedule 2: legislation.gov.uk.
• Fireworks Regulations 2004: legislation.gov.uk.
• BS EN 15947:2015: Pyrotechnic Articles. Fireworks, Categories F1, F2 and F3 (test method standard, available via BSI).
• GOV.UK firework law summary: gov.uk/fireworks-the-law.
• RSPCA fireworks guidance: rspca.org.uk.
• Dogs Trust fireworks advice: dogstrust.org.uk.

Last reviewed: 11 May 2026. Data drawn from the most recent UK regulatory testing (HSE 2023). If you spot a number that has moved on, drop us a note at help@galacticfireworks.co.uk.