Chittoor vs Howrah
Side-by-side air quality comparison between Chittoor and Howrah.
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
Pollutant-level comparison (PM2.5, PM10, O3, NO2, SO2, CO)▾
| Pollutant | Chittoor | Howrah |
|---|---|---|
| PM2.5(µg/m³) | 6.10 | 64.70 |
| PM10(µg/m³) | 7.70 | 69.40 |
| NO₂(µg/m³) | 7.30 | 18.10 |
| SO₂(µg/m³) | 3.10 | 13.10 |
| O₃(µg/m³) | 47.00 | 86.00 |
| CO(µg/m³) | 212.00 | 421.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Chittoor averaged an AQI of 76 while Howrah averaged 126 — a 50-point (66%) gap, with Howrah the more polluted and Chittoor the cleaner of the two. On 281 days when both cities reported, Chittoor was cleaner on 225 of them; the average daily gap was 101 AQI points.
Seasonality & days
Chittoor peaks in October, while Howrah peaks in December. Chittoor logged 0% Severe days and 84.9% Good-or-Satisfactory days; Howrah was 0.7% Severe and 48.7% Good-or-Satisfactory. Longest clean-air streaks: Chittoor 37 days, Howrah 120 days.
Year-over-year progress
Chittoor has worsened by 5 AQI points (7%) from 2022 to 2024; Howrah has improved by 32 AQI points (20.3%) over the same window. The worst recorded day for Chittoor reached AQI 348 at Gangineni Cheruvu (APPCB) on 2023-11-13; Howrah hit AQI 500 at Ghusuri (WBPCB) on 2017-04-15.
Station-level disparity
Chittoor spans 1 CPCB stations with a 0-point spread (min 72, max 72); Howrah spans 5 stations with a 116-point spread (min 111, max 227).
Verdict
🏆 Chittoor has better air quality with an AQI of 10 compared to Howrah's 117. That's a significant difference of 107 points.