Cracker conundrum

1. At a Glance

• Core issue: whether the Supreme Court should ban firecrackers outright or allow regulated use, given that pollution from them is hard to isolate from other sources [1].
• Regulatory model: the Oct 2025 order allowed temporary NCR use, limited to NEERI-approved green crackers from PESO-licensed manufacturers, with fixed bursting windows [2].
• Evidence problem: the Court has awaited quantitative evidence of health and environmental effects, which The Hindu calls "almost impossible to furnish" as direct causal proof [1].
• UPSC value: links air pollution, judicial policymaking, science-based regulation and last-mile enforcement [1][2].

2. Why in the News

• The Hindu editorial "Cracker conundrum" (10 Nov 2026, p. 14, Chennai) reviewed two Deepavali nights after the SC's temporary relaxation of the cracker ban [1].
• AQI in several north Indian cities was already "poor" or "very poor" in the first week of November and turned "severe" on Diwali night [1].
• Several sensors, maintained by various organisations, reported PM2.5 above 1,000 in Delhi and its outskirts by Diwali night [1].
• Delhi's five-day average AQI rose from about 350 before Diwali to 376 after in 2026 [1].
• Editorial's position: any regulation of crackers needs strict enforcement at all levels [1].
• Limit: the text of the 2026 order was not retrieved, so its geographic scope and conditions are unconfirmed.

3. Background & Evolution

• Driving rationale: post-monsoon dryness and slackening winds trap particulates from vehicles, industries, construction dust and stubble burning; crackers add to already degraded air [1].
• 9 Oct 2017: an SC judgment set out PESO-approved compositions for fireworks in Delhi and NCR and prohibited antimony, lithium, mercury, arsenic and lead compounds [4].
• 2018: the Arjun Gopal approach to regulated bursting, later adopted by the Court in Oct 2025 [2].
• CSIR R&D track: a fast-track mission-mode project on eco-friendly firecrackers and e-crackers was launched under Dr. Harsh Vardhan [7].
• "Green Crackers" launch: announced by the Government as a measure to curb air pollution [6].
• 3 Apr 2025: SC rejected applications to relax the NCR ban, refusing to reconsider unless pollution from "so-called Green crackers" is shown to be at the bare minimum [3].
• 15 Oct 2025 (2025 INSC 1233): SC allowed temporary bursting in NCR on conditions [2].
• Early Nov 2026: SC again granted a temporary relaxation [1].

4. Core Static Facts

Item	Fact
Formulation and approval body	CSIR-NEERI, which approves green crackers [2]
Licensing body	PESO, which issues the explosives licence [2]
Registration condition	Only PESO explosives licence holders can obtain NEERI registration; NEERI's SOP covers registration and formulation transfer [2]†
Emission claim	30% reduction in particulate matter from reduced-emission formulations [6]†
Barium nitrate	CSIR-NEERI improved conventional barium nitrate-based formulations [6]†; NEERI later said it does not recommend barium nitrate because the Court had banned it [5]†
Centres of Excellence	National Centre of Excellence for Green Firecrackers at CSIR-NEERI, Nagpur; Centre of Excellence at CSIR-CECRI, Karaikudi [8]
Oct 2025 prohibitions	Online sales barred; firecrackers joined in series (laris) barred from manufacture or sale [2]
Oct 2025 penalties	Penalties for violators, plus cancellation of their PESO or NEERI licence or registration [2]

Delhi five-day average AQI around Diwali [1] (change columns computed from those figures)

Year	Before	After	Rise	% rise
2024	~298	358	60	20.1%
2025	259	315	56	21.6%
2026	350	376	26	7.4%

5. Multi-Dimensional Analysis

Environmental

• Crackers are an additional load on air already burdened by vehicles, industry, construction dust and stubble burning [1].
• Post-Diwali AQI rose in each of 2024, 2025 and 2026, a timing consistent with a cracker contribution [1].
• Their precise share cannot be isolated from other emissions and meteorology [1].
• The smallest rise, in 2026, came from the highest baseline (computed from [1]); this alone does not show lower cracker use.

Legal / Judicial

• The Court moved from refusing relaxation in Apr 2025 to conditional relaxation in Oct 2025 [3][2].
• The 2026 order, as reported, acknowledges the consequences of emissions but awaits quantitative evidence [1].
• The Court was told that an absolute ban would encourage "illegal crackers from across the border" [1].

Scientific / Technological

• Green crackers reduce emissions rather than eliminate them: the stated gain is 30% in particulate matter [6]†.
• Isolating the cracker effect is confounded by simultaneous emission sources and weather [1].
• Institutional capacity has grown through dedicated centres at Nagpur and Karaikudi [8].

Administrative

• Compliance depends on a dual gate of NEERI approval and a PESO licence [2].
• Timing is a practical constraint: the cracker season begins a fortnight before Diwali, so a late judicial decision leaves little lead time [1].
• Time windows and bans on online sales and laris all require on-ground policing, hence the editorial's call for enforcement at all levels [1][2].

Ethical / Governance (mentor's inference, except where cited)

• Requiring proof that the source itself says is almost impossible to furnish [1] risks making regulatory inaction the default.
• A precautionary approach would shift the burden towards those seeking relaxation, close to the Apr 2025 reasoning [3].
• Year-by-year relaxations can create uncertainty for regulators and licensed producers.

6. Recent Developments (last 12-18 months)

• 15 Oct 2025: SC order (2025 INSC 1233) permitted temporary NCR bursting of NEERI-approved green crackers within set windows [2].
• Diwali 2025: Delhi's five-day average AQI rose from 259 to 315 [1].
• Early Nov 2026 (the week before the 10 Nov editorial): SC order on crackers, with temporary relaxation of the ban [1].
• Diwali 2026: AQI "severe" in several north Indian cities; five-day Delhi average rose from about 350 to 376 [1].

7. Prelims Hooks (high-density factual bullets)

• Green crackers permitted in NCR under the Oct 2025 order must be approved by NEERI [2].
• Their manufacturers must hold a PESO licence [2].
• The Oct 2025 order is cited as 2025 INSC 1233 [2].
• The Oct 2025 order adopted the 2018 Arjun Gopal approach [2].
• The Oct 2025 order barred online sales of firecrackers [2].
• Laris are firecrackers joined in series, and their manufacture or sale was barred [2].
• The Oct 2017 judgment prohibited antimony, lithium, mercury, arsenic and lead compounds in fireworks for Delhi and NCR [4].
• Reduced-emission formulations claim a 30% cut in particulate matter [6]†.
• National Centre of Excellence for Green Firecrackers: CSIR-NEERI, Nagpur [8].
• Centre of Excellence for Green Firecrackers: CSIR-CECRI, Karaikudi [8].
• In Apr 2025, the SC refused to relax the NCR ban, referring to "so-called Green crackers" [3].
• Delhi's five-day average AQI rose from about 298 to 358 around Diwali 2024 [1].

8. What the 2026 Order Added, and Where It Can Still Leak

• The 2026 rules are now partly known
• As reported, the Court let makers with valid CSIR-NEERI and PESO certificates produce green crackers from 2 to 6 November [9].
• Bursting was allowed only on 7 and 8 November, from 6 to 7 am and from 8 to 10 pm. The full ban returned from 9 November [9].
• Each green cracker needs its own QR code. Laris and garlands (crackers joined in a chain) stay banned [9].

• The reports differ on the date of the order (29 October or 2 November), so check the order itself before you quote a date [9].

• A QR code only works if someone scans it

• The QR code is supposed to prove that a cracker is a real, approved green cracker [9].
• On a crowded street at night, the police cannot check every box that is burst. A banned cracker and a green cracker look the same once they are in the sky.

• So the rule is strong at the factory and the licensed shop, and weak at the point where the pollution actually happens.

• The order now threatens officials, not just sellers

• Officials who fail to follow the order can face contempt action. Contempt means punishment by the court for disobeying it [9].

• This matters because the 2025 order punished only violators and their licences [2]. Now the court is also putting pressure on the people who are meant to enforce the rules.

• Diwali night shows the gap

• Even with these limits, 20 of Delhi's 59 monitoring stations were in the 'severe' category on Diwali night, 8 November 2026 [10].
• Either crackers were burst outside the allowed hours and types, or the background pollution was already too high for the limits to matter. The data cannot tell us which.

9. Why Two Sources Give Different Diwali Numbers

• The same Diwali, two very different rises
• The Hindu puts Delhi's five-day average AQI for 2024 at about 298 before Diwali and 358 after [1].
• Down to Earth puts 2024 at 276 before and 281 after [10].

• For 2025, The Hindu says 259 to 315 [1]. Down to Earth says 291 to 319 [10].

• Why this happens

• An AQI 'average' depends on which days are counted and which stations are included. Change either one and the number changes.

• Neither source, as retrieved, says exactly which days and stations it used. So the two series cannot be mixed.

• The direction holds even where the size changes

• Delhi-NCR's air got worse after Diwali in eight of the past nine years [10].

• So the trend is solid. The size of the rise in any one year is not.

• How to use this in an answer

• Quote one series and name its source. Never take the 'before' figure from one source and the 'after' figure from another.
• Say 'AQI worsened after Diwali in most recent years' rather than claiming an exact cracker share.

10. Why Asking for Proof of Harm Is a Hard Test to Pass

• Science can measure the spike, but not easily count the sick
• Studies elsewhere show that fireworks clearly push up particulate matter. During New York's 4 July show, PM2.5 (fine dust particles small enough to enter the lungs) was 162–240 µg/m³ [14].
• Metals such as zinc, lead and antimony more than doubled in river water after that same show [14]. So the harm reaches water and soil, not just the air.

• Health outcomes are harder to prove. A Netherlands study of New Year fireworks notes that only a handful of small studies have looked at their health effects at all [13].

• Why this matters for the Court's approach

• The Court is waiting for numbers on health and environmental effects [1].
• The kind of evidence that is easy to get (air readings) already exists. The kind it seems to want (exact harm caused by crackers alone) is what The Hindu calls almost impossible to supply [1].

• If the test is proof that cannot be produced, each relaxation becomes the default and each ban needs special justification.

• Delhi-specific evidence already points one way

• A five-year Delhi study found that more particles settle in people's airways during and after Diwali [16].
• This is a model of exposure, not a count of hospital cases, but it is real evidence of harm to the body [16].
• The precautionary principle (act to prevent serious harm even when full proof is missing) would treat this as enough to keep strict limits.

11. The Strongest Case Against a Total Ban

• The argument: a ban hurts workers and does little for the air
• Sivakasi in Tamil Nadu makes nearly 90% of India's firecrackers [11].
• The shift to green crackers cut production of traditional crackers sharply, and many producers shut down [11].
• Because barium salts are banned, one Sivakasi association says it cannot make popular items such as sparklers, chakris, anars and pencils [11].
• Manufacturers said back in 2018 that there is 'no such thing' as a green cracker, and called the label misleading [12].
• A total ban, the Court was told, would only push buyers towards illegal crackers from across the border [1].

• Research on Delhi finds that controlling pollution across the whole airshed (the larger region whose air flows into the city) works better than local controls, even in bad winter weather [15]. A city-level cracker ban is one such local control.

• What is right about it

• The livelihood cost is real, and it falls on one district far from Delhi.
• Crackers are a short burst on top of a long, steady load from vehicles, industry, dust and stubble [1]. Banning them alone will not clean Delhi's air.

• The 'green' label promises more than a 30% particle cut can deliver [6].

• Where it falls short

• The cracker spike arrives on the very nights when post-monsoon weather traps pollution [1]. A small extra load on a 'severe' day causes more harm than the same load on a clean day.
• The 'local controls are not enough' finding [15] argues for doing more across the region. It does not argue for removing the one control that already exists.
• The worker problem is better solved by helping firms shift to approved formulations, through the CSIR centres at Nagpur and Karaikudi [8], than by relaxing the rules for the whole of NCR.

12. What Should Happen Before Next Diwali

• CPCB should publish its three-phase data as the Court's evidence base
• CPCB is to assess air quality before Diwali (2–6 Nov), on Diwali (7–8 Nov) and after it (9–30 Nov) [9].
• If it publishes these readings station by station, with the days fixed, the Court finally gets one agreed series instead of two clashing ones [1][10].

• Using the same method every year is what turns an AQI spike into usable evidence.

• The Supreme Court should fix the rules well before the season

• The cracker season starts about a fortnight before Diwali [1]. In 2026, makers had only a five-day production window [9].

• A standing rule, known months ahead, lets PESO and NEERI check stock and QR codes before it reaches the shops, not after.

• CSIR-NEERI should give Sivakasi a barium-free route for popular items

• The banned barium compounds block the most popular products [11][5].

• The national centre at Nagpur and the centre at Karaikudi [8] exist for this purpose. Their work should be judged by how many such items get approved formulations.

• The Centre and the NCR states should treat crackers as part of an airshed plan

• Delhi-only measures do less than action across the region [15].
• Cracker limits should sit inside a wider plan that also covers stubble, vehicles and construction dust over the same weeks [1]. Otherwise the Diwali debate keeps hiding the larger problem.

13. Anchors for Answers

• Data: 20 of Delhi's 59 monitoring stations were 'severe' on Diwali night, 8 Nov 2026, despite the cracker limits [10]
• Data: Delhi-NCR's air got worse after Diwali in 8 of the last 9 years [10]
• Data: Sivakasi makes nearly 90% of India's firecrackers, which is where the livelihood side of the debate sits [11]
• Law/Case: Arjun Gopal (2018) approach to regulated bursting, adopted in 2025 INSC 1233 (15 Oct 2025) [2]; 9 Oct 2017 judgment banning antimony, lithium, mercury, arsenic and lead compounds [4]
• Law/Case: 2026 order: product-specific QR codes, fixed bursting hours, and contempt action against officials who do not comply [9]
• Comparison: New York's 4 July fireworks pushed PM2.5 to 162–240 µg/m³ and more than doubled metals in river water [14]; Netherlands New Year study notes how few health studies exist [13]
• Scheme: CSIR fast-track mission-mode R&D on eco-friendly crackers [7] and the Centres of Excellence at Nagpur and Karaikudi [8], the route for barium-free formulations

14. Mains Relevance

• GS-III: Conservation, environmental pollution and degradation.
• GS-II: Government policies and interventions; functioning of the Judiciary.
• GS-IV (secondary): Ethical issues in balancing public health, livelihoods and cultural practice.

Question stems

1. "Direct causal evidence should not be a precondition for regulating a known pollutant." Discuss with reference to judicial handling of firecrackers in India.
2. Examine the effectiveness of "green crackers" as a regulatory compromise. What institutional and enforcement gaps limit their impact?
3. Festival-linked pollution spikes occur against a background of chronic emissions and adverse meteorology. Suggest an integrated response for north Indian cities.

15. Related Topics to Study Next

• AQI and PM2.5 measurement: needed to interpret Diwali readings and sensor data.
• Stubble burning: a named contributor to the post-monsoon particulate load.
• Post-monsoon meteorology: explains why slack winds and dry air trap pollutants.
• Vehicular, industrial and construction emissions: the baseline on which crackers add.
• Delhi-NCR air quality governance: shows who must enforce restrictions on the ground.
• Right to a clean environment: the constitutional lens for judicial intervention.
• Explosives regulation and PESO: the statutory side of cracker licensing.
• CSIR laboratories (NEERI, CECRI): an example of mission-mode R&D supporting regulation.

16. NCERT Concepts to Revise

• Green crackers (Geography): The note's central regulatory compromise; it cuts particulate emissions but does not eliminate pollution.
• CSIR-NEERI (Geography): NEERI approves green-cracker formulations and registration, and hosts the national centre of excellence in Nagpur.
• Council of Scientific and Industrial Research (Geography): CSIR labs such as NEERI and CECRI supply the research behind green-cracker regulation.
• Particulate matter (Geography): PM2.5 sensor readings above 1,000 and the 30% particulate cut are central to the note.
• National Air Quality Index (Geography): Needed to read the 'poor', 'very poor' and 'severe' labels and Delhi's five-day AQI figures.
• Air pollution (Economy): Explains the vehicle, industry and construction emissions that crackers add to on Diwali.
• Stubble burning (Geography): A named post-monsoon source of particulates that makes it hard to isolate the cracker share.
• Right to a clean environment (Polity): The Article 21 basis on which the Supreme Court intervenes to regulate crackers.
• Judiciary (Polity): The note turns on the Supreme Court's shift from refusing relaxation to allowing regulated bursting.
• Monsoon (Geography): Post-monsoon dry air and slack winds trap pollutants, which is why Diwali smog worsens.
• Correlation (Economy): Post-Diwali AQI spikes are consistent with a cracker contribution but do not prove its share.

17. Common Errors / Trap Areas

• NEERI vs PESO: NEERI handles formulation approval and registration; PESO handles the explosives licence [2].
• "Green" does not mean zero-emission: the stated gain is a 30% particulate reduction [6]†.
• Apr 2025 vs Oct 2025: the first refused relaxation and the second allowed it conditionally [3][2].
• Do not carry 2025 conditions into 2026: the retrieved material does not confirm that the 2026 order kept them.
• Correlation vs attribution: post-Diwali spikes are consistent with a cracker contribution but do not establish its share [1].
• AQI vs PM2.5: the 1,000+ figure is a PM2.5 sensor reading from various organisations, not the five-day AQI series [1].