Data tracker
How Hot Is India Getting?
Warmest full year
2024
India average 23.3 °C, of 2020–2025
Days ≥ 40 °C in 2025
12.6
average across India's area, against 16.1 in 2020–2024
Data coverage
2020–2026
2026 is partial, through 24 Oct 2026
India: Days ≥ 40 °C
India: Days ≥ 40 °C
No data yetTap a region for its value, then open its page. Click a region on the map to open its page. ERA5 is a reanalysis estimate on a ~28 km grid, so district values are smoothed. Boundaries are not official Survey of India boundaries.
Values come from ERA5, a global climate reanalysis, mapped onto state and district boundaries. This is not a forecast and not an official heatwave warning.
Data through 2026-10-24 (full years to 2025; 2026 is partial) · ERA5 reanalysis · release 2026-10-31-f8bb6a6 · updated 2026-10-31
Warmest full year
2024
India average 23.3 °C, of 2020–2025
Days ≥ 40 °C in 2025
12.6
average across India's area, against 16.1 in 2020–2024
Data coverage
2020–2026
2026 is partial, through 24 Oct 2026
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What ERA5 is
A reanalysis: a weather model constrained by observations. It is not a thermometer reading, and it can understate local extremes.
What days ≥ 40 °C means
Counts grid-cell days with a modelled daily maximum of at least 40 °C. IMD heatwave declarations use station data and regional criteria, so the two are different things.
About the data
The grid is about 28 km wide, so small districts and islands may be covered by only part of one cell. District values are smoothed. Boundaries are not official Survey of India boundaries.