Rating
Singapore risk rating
Expired, last assessment only · Model activity-rating-2
Computed: 2026-10-04 12:47:35 UTC · Valid until: 2026-10-04 14:47:35 UTC
Coverage is selective. Missing or expired assessments do not mean zero hazard. Scores are heuristic indices, not calibrated probabilities. Model cards and limits
- state:
- partial
- missing Country:
- unassessed
- country Limit:
- 100
- forecast:
- assessed
- population Metric:
- urban event exposures not unique people
This is a last assessment, not a current rating. Its validity has expired or was not recorded. That does not establish that no events or hazards are present.
The rating is a composite index of reported activity; it does not measure structural vulnerability or coping capacity. It shares inputs with the Calamity Forecast Index. Neither index is a calibrated event probability. Model cards and formulas.
Rating components
Recorded hazard contributions
Mean event index: 46/100 · Eligible records: 1
Rating history
- AtoAindex 16 → 78d agoActivity score changed from 16 to 7Current dominant event: Unhealthy Air Quality (AQI 159) (CalamityScore 46); cause of change not attributedseverity component 10.0 → 9.2population component 45.1 → 5.0
Activity score changed from 16 to 7. Current dominant event: Unhealthy Air Quality (AQI 159) (CalamityScore 46); cause of change not attributed. severity component 10.0 → 9.2. population component 45.1 → 5.0. Context: EVENT: Unhealthy Air Quality (AQI 159) — SG Detected: 2026-10-03T04:00:00.000Z CalamityScore: 46/100 Severity: medium URBAN EXPOSURE INDEX: 50,321 weighted city population units; not unique people or a census of the affected area CONTEXT: Country: SG. Consult current official local emergency instructions. This automated index does not issue evacuation orders. No scenario matched the configured rules; this does not establish absence of risk.
- AtoAindex 7 → 169d agoActivity score changed from 7 to 16Current dominant event: Unhealthy Air Quality (AQI 156) (CalamityScore 50); cause of change not attributedseverity component 9.2 → 10.0population component 5.0 → 45.1
- BtoAindex 27 → 79d agoCountry rating changed from B to A (score 27 → 7)Current dominant event: Unhealthy Air Quality (AQI 154) (CalamityScore 46); cause of change not attributedseverity component 11.8 → 9.2population component 100.0 → 5.0
- AtoBindex 7 → 2712d agoCountry rating changed from A to B (score 7 → 27)Current dominant event: Unhealthy Air Quality (AQI 170) (CalamityScore 59); cause of change not attributedseverity component 9.2 → 11.8population component 5.0 → 100.0
- AtoAindex 16 → 713d agoActivity score changed from 16 to 7Current dominant event: Unhealthy Air Quality (AQI 194) (CalamityScore 46); cause of change not attributedseverity component 10.0 → 9.2population component 45.1 → 5.0
- AtoAindex 7 → 1613d agoActivity score changed from 7 to 16Current dominant event: Unhealthy Air Quality (AQI 185) (CalamityScore 50); cause of change not attributedseverity component 9.2 → 10.0population component 5.0 → 45.1
- AtoAindex 8 → 7Yellow → Green13d agoOperational status changed from yellow to greenCurrent dominant event: Unhealthy Air Quality (AQI 198) (CalamityScore 46); cause of change not attributedseverity component 10.6 → 9.2
- AtoAindex 7 → 8Green → Yellow13d agoOperational status changed from green to yellowCurrent dominant event: Very Unhealthy Air Quality (AQI 215) (CalamityScore 53); cause of change not attributedseverity component 9.2 → 10.6
- AtoAindex 7 → 7Yellow → Green13d agoOperational status changed from yellow to greenCurrent dominant event: Unhealthy Air Quality (AQI 184) (CalamityScore 46); cause of change not attributed
- AtoAindex 7 → 7Green → Yellow13d agoOperational status changed from green to yellowCurrent dominant event: Very Unhealthy Air Quality (AQI 200) (CalamityScore 46); cause of change not attributed
- BtoAindex 27 → 713d agoCountry rating changed from B to A (score 27 → 7)Current dominant event: Unhealthy Air Quality (AQI 194) (CalamityScore 46); cause of change not attributedseverity component 11.8 → 9.2population component 100.0 → 5.0
- AtoBindex 16 → 2714d agoCountry rating changed from A to B (score 16 → 27)Current dominant event: Unhealthy Air Quality (AQI 151) (CalamityScore 59); cause of change not attributedseverity component 10.0 → 11.8population component 45.1 → 100.0
- AtoAindex 7 → 1615d agoActivity score changed from 7 to 16Current dominant event: Unhealthy Air Quality (AQI 172) (CalamityScore 50); cause of change not attributedseverity component 9.2 → 10.0population component 5.0 → 45.1
- AtoAindex 19 → 716d agoActivity score changed from 19 to 7Current dominant event: Unhealthy Air Quality (AQI 152) (CalamityScore 46); cause of change not attributedseverity component 11.0 → 9.2population component 60.2 → 5.0
- AtoAindex 7 → 19Yellow → Green18d agoOperational status changed from yellow to greenCurrent dominant event: Unhealthy Air Quality (AQI 158) (CalamityScore 55); cause of change not attributedseverity component 9.2 → 11.0population component 5.0 → 60.2
- AtoAindex 19 → 7Green → Yellow22d agoOperational status changed from green to yellowCurrent dominant event: Very Unhealthy Air Quality (AQI 200) (CalamityScore 46); cause of change not attributedseverity component 11.0 → 9.2population component 60.2 → 5.0
- AtoAindex 7 → 19Yellow → Green26d agoOperational status changed from yellow to greenCurrent dominant event: Unhealthy Air Quality (AQI 174) (CalamityScore 55); cause of change not attributedseverity component 9.2 → 11.0population component 5.0 → 60.2
- AtoAindex 20 → 727d agoActivity score changed from 20 to 7Current dominant event: Very Unhealthy Air Quality (AQI 200) (CalamityScore 46); cause of change not attributedseverity component 12.4 → 9.2population component 60.2 → 5.0
- AtoBindex 18 → 2528d agoCountry rating changed from A to B (score 18 → 25)Unhealthy Air Quality (AQI 156) (CalamityScore 55)
- BtoAindex 23 → 1148d agoCountry rating changed from B to A (score 23 → 11)Unhealthy Air Quality (AQI 155) (CalamityScore 31)