India Environmental Monitoring · 435,742 Records · ML Quality Scoring · 1987–2015
FILTERS ACTIVE
📅 1987–2015
🏙 304 Cities · 33 States
StateConfidenceYear→Min Score0+Showing 304 cities
Total Records
435K
📍 304 cities · 33 states
High Confidence
--%
Medium Confidence
--%
Low Confidence
--%
Avg Quality Score
--/100
✓ Based on filtered cities
Quality Score Trend — 1987 to 2015
Annual average · filtered by year range
TIME SERIES
Confidence Distribution
Share of filtered cities by confidence level
ML OUTPUT
● High --● Med --● Low --
Pollutant Concentrations Over Time
Annual averages in µg/m³ — use tabs to focus
POLLUTANTS
All
SO₂
NO₂
RSPM
SPM
Pollutant Statistics
Real data from your dataset
SO₂
14.8 µg/m³
✓ 1.30% outliers 401,096 readings
NO₂
27.2 µg/m³
✓ 1.65% outliers 419,509 readings
RSPM
109.4 µg/m³
⚠ 1.45% outliers 395,520 readings
PM2.5
-- µg/m³
✗ 1.88% outliers 9,314 readings only
AI Insight: SO₂ dropped 63% from 1987→2015 (22→8 µg/m³) due to cleaner fuel mandates. NO₂ remains elevated at 27 µg/m³, reflecting persistent vehicular & industrial emissions across major cities.
City Quality Rankings
All 304 cities — click column headers to sort
CITY RANK
#
City
State
Score ↓
Conf.
Records
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Outlier Analysis by Pollutant
% of readings flagged (Z-score > 3) · real data
OUTLIERS
AI Insight: PM2.5 has highest outlier rate (1.88%) despite fewest readings — monitoring started post-2000 with older equipment. SPM outliers reflect industrial dust spikes near manufacturing zones.
Quality Score Distribution
How your 43,574 sampled records cluster across score ranges