Loading the owned archive and shared-hour comparison…
Compare campus air
Start with the two campuses you actually care about. Compare their latest linked-monitor PM2.5, then check whether the same pattern held across the exact same archived hours. Extra campuses stay optional context rather than crowding the main comparison.
Research status · pilot / method development
This live comparison is exploratory and is not a primary-study result. September observations are being used to validate collection, provenance, QC and analysis behavior. The frozen prospective primary period begins 1 October 2026.
Direct comparison
The default is 24 hours so a young archive does not open on a mostly empty 7-day chart. Switch to 7 days when you want a wider window.
Archive window: 24/24 hours available
Right now · latest linked-monitor snapshot
The historical comparison below remains available for archived hours that satisfy the selected shared-hour rules.
LHMC
182 µg/m³
MAMC
435 µg/m³
Ambient reference-monitor readings only. This is not a measurement of personal exposure or air inside either campus.
Now
Current comparison withheld because at least one snapshot is stale.
Paired archive
0 shared PM2.5 hours
Do the two views agree?
Archive building
There are not yet enough paired archived hours to compare the short-term pattern with the latest snapshot.
A ↔ B same-hour history
At least four paired hours are required before this page states which linked monitor had the lower same-hour average.
Optional historical context
The direct A-vs-B result above stays pairwise. Multi-campus ranking below uses hours shared by every independent selected monitor.
2 campuses → 2 independent monitors
Shared-hour ranking · independent monitors
0
common PM2.5 hours out of 24 archive-eligible hours in this view
At least 4 common hours across the independent reference monitors are required before this page ranks them. The archive will fill automatically.
Lower here means a lower average PM2.5 at the linked physical monitor across the exact same archived hours. It is not a long-term health ranking of the campuses.
Threshold context
LHMC
0%
of 22 archived PM2.5 hours ≤ 60 µg/m³
MAMC
—
of 0 archived PM2.5 hours ≤ 60 µg/m³
These are concentration thresholds for exploring the archive, not official AQI categories and not exposure limits.
Connaught Place area
Lady Hardinge Medical College
Current PM2.5
182 µg/m³
Average
228.4 µg/m³
Median
231.5 µg/m³
Lowest
176 µg/m³
24 Oct, 9:30 am
Highest
280 µg/m³
23 Oct, 6:30 pm
Data coverage
22/24 eligible h · 92%
Denominator starts at this monitor's first archived observation in the selected archive window; later missing hours stay missing.
Reference monitor
Mandir Marg, Delhi - DPCC
1.1 km from campus · DPCC
Bahadur Shah Zafar Marg
Maulana Azad Medical College
Current PM2.5
435 µg/m³
Average
—
Median
—
Lowest
—
—
Highest
—
—
Data coverage
0/24 eligible h · 0%
Denominator starts at this monitor's first archived observation in the selected archive window; later missing hours stay missing.
Reference monitor
ITO, Delhi - CPCB
0.8 km from campus · CPCB
Interpretation boundary
This compares the nearby monitoring stations associated with each campus, not personal exposure and not air inside classrooms, hostels or hospitals. Campuses sharing one physical reference monitor are grouped into one independent series for historical ranking, threshold summaries and charting. Pre-archive time is never coded as missing. Coverage is computed only over archive-eligible hours, and the ranking uses only PM2.5 hours shared by every independent selected reference monitor.
Archive-first CPCB-linked data · Latest stored source timestamp and monitor provenance are attached to every value.