OpenDQ Observatory

Incident summary

DATA DRIFT · WARNING severity

OPEN

Hourly weather

temperature_c PSI drift · drift:temperature_c:psi

Hourly weather temperature_c PSI drift detected. Observed metric: 3.3346032447047826; threshold: 0.2.

Occurrences41Persisted observations

Last seen9/15/202611:42:53 AM

Opened: 9/6/2026, 3:08:42 AM
Incident key: hourly-weather:drift:temperature_c:psi

Deterministic root cause

A ranked explanation derived from persisted evidence. It is authoritative for this view; optional AI is shown later.

No AI inference

Top ranked causeDISTRIBUTION SHIFT

HIGH confidence

Probable cause: distribution shift. Evidence: psi distribution shift. Confidence: HIGH. Affected downstream assets: 3.

Ranked candidates

#1 DISTRIBUTION SHIFTHIGH confidencescore 10

Evidence used

psi distribution shiftDRIFT_RESULT · drift_resultsweight 10

Algorithm deterministic-rca-v1 · fingerprint 1e6d1f2a16b4… · created 9/15/2026, 4:52:51 AM

Evidence

Human-readable fields are the first view. Raw JSON remains available when exact payload inspection is useful.

41 occurrences

Method: PSI
Details.Epsilon: 0
Details.Baseline Bins: [26.56,27.08,27.56,28.06,29.05,29.66,31.09,32.08,34.36]
Details.Location Shift.P95 Shift: -5.015
Details.Location Shift.Mean Shift: -2.935
Details.Location Shift.Current P95: 30.31
Details.Location Shift.Baseline P95: 35.325
Details.Location Shift.Current Mean: 26.753
Details.Location Shift.Median Shift: -2.65
Details.Location Shift.Baseline Mean: 29.688
Details.Location Shift.Current Median: 26.4
Details.Location Shift.Baseline Median: 29.05
Details.Location Shift.Normalized Median Shift: -0.561
Details.Warning Threshold: 0.1
Details.Current Distribution: [0.55,0.11,0.08,0.03,0.08,0.02,0.1,0.03,0,0]
Details.Baseline Distribution: [0.125,0.08333333333333333,0.08333333333333333,0.125,0.08333333333333333,0.08333333333333333,0.125,0.08333333333333333,0.08333333333333333,0.125]
Threshold: 0.2
Column Name: temperature_c
Drift Result Id: 321
Observed Metric: 3.335
Baseline Version: 1
Current Sample Count: 100
Baseline Sample Count: 24

View raw evidence JSON

{
  "method": "PSI",
  "details": {
    "epsilon": 0.000001,
    "baseline_bins": [
      26.56,
      27.08,
      27.56,
      28.06,
      29.05,
      29.66,
      31.09,
      32.08,
      34.36
    ],
    "location_shift": {
      "p95_shift": -5.014999999999997,
      "mean_shift": -2.9345,
      "current_p95": 30.31,
      "baseline_p95": 35.324999999999996,
      "current_mean": 26.753,
      "median_shift": -2.6499999999999986,
      "baseline_mean": 29.6875,
      "current_median": 26.4,
      "baseline_median": 29.049999999999997,
      "normalized_median_shift": -0.5608465608465608
    },
    "warning_threshold": 0.1,
    "current_distribution": [
      0.55,
      0.11,
      0.08,
      0.03,
      0.08,
      0.02,
      0.1,
      0.03,
      0,
      0
    ],
    "baseline_distribution": [
      0.125,
      0.08333333333333333,
      0.08333333333333333,
      0.125,
      0.08333333333333333,
      0.08333333333333333,
      0.125,
      0.08333333333333333,
      0.08333333333333333,
      0.125
    ]
  },
  "threshold": 0.2,
  "column_name": "temperature_c",
  "drift_result_id": 321,
  "observed_metric": 3.3346032447047826,
  "baseline_version": 1,
  "current_sample_count": 100,
  "baseline_sample_count": 24
}

Blast radius

Downstream assets captured when this incident was evaluated.

Open dataset lineage

Open-Meteo Quality EvaluationPROCESS · distance 1

dataset:hourly-weatherprocess:quality-open-meteo

Quality APIAPI · distance 2

dataset:hourly-weatherprocess:quality-open-meteoapi:quality

Quality DashboardDASHBOARD · distance 3

dataset:hourly-weatherprocess:quality-open-meteoapi:qualityui:quality-dashboard

Lifecycle

Chronological state transitions recorded for this incident.

41 events

OPENED9/6/2026, 3:08:42 AM
Hourly weather evaluation error temperature_c PSI drift quality rule. Observed: none. Expected: none.
OPEN
OBSERVED AGAIN9/6/2026, 3:08:42 AM
Hourly weather temperature_c PSI drift detected. Observed metric: 1.9808481926550836; threshold: 0.2.
OPEN toOPEN
OBSERVED AGAIN9/6/2026, 4:36:54 AM
Hourly weather temperature_c PSI drift detected. Observed metric: 1.9808481926550836; threshold: 0.2.
OPEN toOPEN
OBSERVED AGAIN9/6/2026, 4:42:59 AM
Hourly weather temperature_c PSI drift detected. Observed metric: 1.9808481926550836; threshold: 0.2.
OPEN toOPEN
OBSERVED AGAIN9/6/2026, 5:26:38 AM
Hourly weather temperature_c PSI drift detected. Observed metric: 1.9808481926550836; threshold: 0.2.
OPEN toOPEN
OBSERVED AGAIN9/6/2026, 7:03:27 AM
Hourly weather temperature_c PSI drift detected. Observed metric: 1.9808481926550836; threshold: 0.2.
OPEN toOPEN
OBSERVED AGAIN9/6/2026, 10:54:39 AM
Hourly weather temperature_c PSI drift detected. Observed metric: 1.9808481926550836; threshold: 0.2.
OPEN toOPEN
OBSERVED AGAIN9/6/2026, 3:27:26 PM
Hourly weather temperature_c PSI drift detected. Observed metric: 1.9808481926550836; threshold: 0.2.
OPEN toOPEN
OBSERVED AGAIN9/6/2026, 8:23:15 PM
Hourly weather temperature_c PSI drift detected. Observed metric: 1.9808481926550836; threshold: 0.2.
OPEN toOPEN
OBSERVED AGAIN9/7/2026, 4:39:10 AM
Hourly weather temperature_c PSI drift detected. Observed metric: 1.7817922557809565; threshold: 0.2.
OPEN toOPEN
OBSERVED AGAIN9/7/2026, 12:30:24 PM
Hourly weather temperature_c PSI drift detected. Observed metric: 1.7817922557809565; threshold: 0.2.
OPEN toOPEN
OBSERVED AGAIN9/7/2026, 9:30:08 PM
Hourly weather temperature_c PSI drift detected. Observed metric: 1.7817922557809565; threshold: 0.2.
OPEN toOPEN
OBSERVED AGAIN9/8/2026, 4:33:43 AM
Hourly weather temperature_c PSI drift detected. Observed metric: 1.8627663318558965; threshold: 0.2.
OPEN toOPEN
OBSERVED AGAIN9/8/2026, 11:17:06 AM
Hourly weather temperature_c PSI drift detected. Observed metric: 1.8627663318558965; threshold: 0.2.
OPEN toOPEN
OBSERVED AGAIN9/8/2026, 4:37:16 PM
Hourly weather temperature_c PSI drift detected. Observed metric: 1.8627663318558965; threshold: 0.2.
OPEN toOPEN
OBSERVED AGAIN9/8/2026, 9:08:23 PM
Hourly weather temperature_c PSI drift detected. Observed metric: 1.8627663318558965; threshold: 0.2.
OPEN toOPEN
OBSERVED AGAIN9/9/2026, 4:40:00 AM
Hourly weather temperature_c PSI drift detected. Observed metric: 1.8073563231618182; threshold: 0.2.
OPEN toOPEN
OBSERVED AGAIN9/9/2026, 11:21:11 AM
Hourly weather temperature_c PSI drift detected. Observed metric: 1.8073563231618182; threshold: 0.2.
OPEN toOPEN
OBSERVED AGAIN9/9/2026, 4:37:18 PM
Hourly weather temperature_c PSI drift detected. Observed metric: 1.8073563231618182; threshold: 0.2.
OPEN toOPEN
OBSERVED AGAIN9/9/2026, 8:55:02 PM
Hourly weather temperature_c PSI drift detected. Observed metric: 1.8073563231618182; threshold: 0.2.
OPEN toOPEN
OBSERVED AGAIN9/10/2026, 4:40:50 AM
Hourly weather temperature_c PSI drift detected. Observed metric: 2.0386440486673627; threshold: 0.2.
OPEN toOPEN
OBSERVED AGAIN9/10/2026, 11:17:44 AM
Hourly weather temperature_c PSI drift detected. Observed metric: 2.0386440486673627; threshold: 0.2.
OPEN toOPEN
OBSERVED AGAIN9/10/2026, 4:23:15 PM
Hourly weather temperature_c PSI drift detected. Observed metric: 2.0386440486673627; threshold: 0.2.
OPEN toOPEN
OBSERVED AGAIN9/10/2026, 8:51:16 PM
Hourly weather temperature_c PSI drift detected. Observed metric: 2.0386440486673627; threshold: 0.2.
OPEN toOPEN
OBSERVED AGAIN9/11/2026, 4:38:18 AM
Hourly weather temperature_c PSI drift detected. Observed metric: 2.1623073766896574; threshold: 0.2.
OPEN toOPEN
OBSERVED AGAIN9/11/2026, 11:19:13 AM
Hourly weather temperature_c PSI drift detected. Observed metric: 2.1623073766896574; threshold: 0.2.
OPEN toOPEN
OBSERVED AGAIN9/11/2026, 4:27:25 PM
Hourly weather temperature_c PSI drift detected. Observed metric: 2.1623073766896574; threshold: 0.2.
OPEN toOPEN
OBSERVED AGAIN9/11/2026, 8:56:52 PM
Hourly weather temperature_c PSI drift detected. Observed metric: 2.1623073766896574; threshold: 0.2.
OPEN toOPEN
OBSERVED AGAIN9/12/2026, 4:32:41 AM
Hourly weather temperature_c PSI drift detected. Observed metric: 3.14053952939907; threshold: 0.2.
OPEN toOPEN
OBSERVED AGAIN9/12/2026, 10:44:28 AM
Hourly weather temperature_c PSI drift detected. Observed metric: 3.14053952939907; threshold: 0.2.
OPEN toOPEN
OBSERVED AGAIN9/12/2026, 3:30:42 PM
Hourly weather temperature_c PSI drift detected. Observed metric: 3.14053952939907; threshold: 0.2.
OPEN toOPEN
OBSERVED AGAIN9/12/2026, 8:32:22 PM
Hourly weather temperature_c PSI drift detected. Observed metric: 3.14053952939907; threshold: 0.2.
OPEN toOPEN
OBSERVED AGAIN9/13/2026, 4:45:47 AM
Hourly weather temperature_c PSI drift detected. Observed metric: 3.487815560908099; threshold: 0.2.
OPEN toOPEN
OBSERVED AGAIN9/13/2026, 11:49:58 AM
Hourly weather temperature_c PSI drift detected. Observed metric: 3.487815560908099; threshold: 0.2.
OPEN toOPEN
OBSERVED AGAIN9/13/2026, 4:17:30 PM
Hourly weather temperature_c PSI drift detected. Observed metric: 3.487815560908099; threshold: 0.2.
OPEN toOPEN
OBSERVED AGAIN9/13/2026, 8:48:49 PM
Hourly weather temperature_c PSI drift detected. Observed metric: 3.487815560908099; threshold: 0.2.
OPEN toOPEN
OBSERVED AGAIN9/14/2026, 4:54:07 AM
Hourly weather temperature_c PSI drift detected. Observed metric: 3.2673203066481062; threshold: 0.2.
OPEN toOPEN
OBSERVED AGAIN9/14/2026, 12:44:18 PM
Hourly weather temperature_c PSI drift detected. Observed metric: 3.2673203066481062; threshold: 0.2.
OPEN toOPEN
OBSERVED AGAIN9/14/2026, 9:48:55 PM
Hourly weather temperature_c PSI drift detected. Observed metric: 3.2673203066481062; threshold: 0.2.
OPEN toOPEN
OBSERVED AGAIN9/15/2026, 4:52:51 AM
Hourly weather temperature_c PSI drift detected. Observed metric: 3.3346032447047826; threshold: 0.2.
OPEN toOPEN
OBSERVED AGAIN9/15/2026, 11:42:49 AM
Hourly weather temperature_c PSI drift detected. Observed metric: 3.3346032447047826; threshold: 0.2.
OPEN toOPEN

AI Incident Copilot

Optional explanatory context based on the same persisted evidence. It cannot change incident state.

Optional · non-authoritative

FALLBACKdeterministic-fallback · deterministic-rca-v1

Deterministic OpenDQ analysis identifies distribution shift as the leading explanation with high confidence.

This explanation follows the persisted deterministic RCA result. The leading cause is distribution shift; the AI provider was not used or was unavailable.

Evidence highlights

drift-result:313{"column": "temperature_c", "method": "PSI", "metric": 3.3346032447047826, "status": "DRIFT", "threshold": 0.2}

Suggested investigation

Compare the current distribution with the stored baseline and inspect the affected column.

Uncertainties

No additional uncertainties recorded.

Prompt incident-copilot-v1 · generated 9/15/2026, 4:53:06 AM · new analysis