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Hisar vs Nagapattinam

Side-by-side air quality comparison between Hisar and Nagapattinam.

Cleaner right now: Nagapattinam (162-pt gap)Historical head-to-head: Nagapattinam cleaner 36/37 days

Live AQI from Open-Meteo CAMS (~45 km global model, updated hourly). Multi-year history from CPCB station data via aqinow.co pipeline (2016–2024, station-level daily records).

AQI Comparison

Hisar

Haryana, India

Moderate

PM2.5: 75.7 µg/m³

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VS
🏆 Cleaner

Nagapattinam

Tamil Nadu, India

Good

PM2.5: 12.5 µg/m³

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Pollutant-level comparison (PM2.5, PM10, O3, NO2, SO2, CO)
PollutantHisarNagapattinam
PM2.5(µg/m³)75.7012.50
PM10(µg/m³)224.4016.20
NO₂(µg/m³)34.709.80
SO₂(µg/m³)8.304.10
O₃(µg/m³)43.0038.00
CO(µg/m³)508.00211.00

CPCB Multi-Year History (2016–2024)

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Summary

Overview

In 2024, Hisar averaged an AQI of 136 while Nagapattinam averaged 60 — a 76-point (127%) gap, with Hisar the more polluted and Nagapattinam the cleaner of the two. On 37 days when both cities reported, Nagapattinam was cleaner on 36 of them; the average daily gap was 143 AQI points.

Seasonality & days

Both cities see their worst air in November on average. Hisar logged 1.6% Severe days and 29.700000000000003% Good-or-Satisfactory days; Nagapattinam was 0% Severe and 91.5% Good-or-Satisfactory. Longest clean-air streaks: Hisar 34 days, Nagapattinam 8 days.

Year-over-year progress

The worst recorded day for Hisar reached AQI 490 at Urban Estate-II (HSPCB) on 2019-11-02; Nagapattinam hit AQI 113 at Velippalayam (TNPCB) on 2024-12-16.

Station-level disparity

Hisar spans 1 CPCB stations with a 0-point spread (min 168, max 168); Nagapattinam spans 1 stations with a 0-point spread (min 60, max 60).

Verdict

🏆 Nagapattinam has better air quality with an AQI of 21 compared to Hisar's 183. That's a significant difference of 162 points.

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