Weather in a Warming World: What Recent Data Shows About Forecasts, Extremes and Public Risk

Weather in a Warming World: What Recent Data Shows About Forecasts, Extremes and Public Risk

As of 2026, weather is being tracked in an atmosphere that has already reached record heat levels: the World Meteorological Organization reported that 2024 was the warmest year on record, at about 1.55°C above the 1850–1900 average. That finding, released in January 2025 and based on multiple international datasets, marked the first calendar year to exceed the 1.5°C level, although the WMO said a single year above that threshold does not mean the long-term Paris Agreement limit has been permanently breached.

Weather, called ವಾನಿಲೆ in Kannada, refers to short-term atmospheric conditions such as temperature, rainfall, wind, humidity, cloud cover and storms. It differs from climate, which describes long-term averages over decades. The distinction is important: daily weather can fluctuate sharply, but recent government and scientific data show that many weather extremes are occurring in a warmer climate system.

National weather agencies, including the India Meteorological Department (IMD), the U.S. National Oceanic and Atmospheric Administration (NOAA), the UK Met Office and the European Union’s Copernicus Climate Change Service, now combine satellites, radar, ocean buoys, automatic weather stations and supercomputer models to monitor changing conditions. Their data is also used by disaster agencies, airlines, farmers, ports, power grids and public health departments.

2024 Set a New Global Benchmark for Heat

The WMO said 2024 was the warmest year in observational records, with global average temperature about 1.55°C above the pre-industrial baseline. Copernicus reported in January 2025 that 2024 was also the first calendar year in its dataset to exceed 1.5°C above pre-industrial levels. NOAA separately ranked 2024 as the warmest year in its 175-year global climate record.

Reuters reported in January 2025 that the 2024 record was driven by the combined influence of long-term greenhouse gas accumulation and the El Niño event that developed in 2023 and continued into early 2024. El Niño is a natural warming of parts of the equatorial Pacific Ocean that can influence global rainfall and temperature patterns. Government weather agencies stress that El Niño does not create long-term warming by itself, but it can raise temperatures on top of the existing warming trend.

The year also included widespread marine heat. Copernicus data showed that global sea surface temperatures reached record levels in 2024 for several months. Warmer oceans can supply more moisture and energy to weather systems, which affects rainfall intensity, tropical cyclone development and heat stress in coastal areas.

How Weather Forecasting Works Today

Modern weather forecasting is built on observation and numerical modelling. Satellites measure cloud cover, water vapour, sea surface temperature and storm structure. Doppler radar tracks rainfall and wind movement inside storms. Surface stations record local temperature, pressure, wind and humidity. Ocean buoys and ships help monitor marine conditions.

Forecast models use these observations as starting points and run equations that describe atmospheric motion, heat exchange and moisture transport. Forecasts are updated regularly as new data arrives. The accuracy of forecasts has improved substantially over recent decades, especially for tropical cyclones and short-range warnings, but uncertainty remains higher for local thunderstorms, fog, lightning and extreme rainfall at small spatial scales.

In India, the IMD issues daily forecasts, severe weather warnings, cyclone bulletins, monsoon updates and heatwave alerts. It uses colour-coded warnings: green for no warning, yellow for watch, orange for alert and red for action. These warnings are shared with state disaster management authorities, media organisations and the public.

India’s Weather: Heat, Monsoon and Cyclones

India’s weather is shaped by the seasonal monsoon, Himalayan snow systems, Bay of Bengal and Arabian Sea cyclones, western disturbances, local thunderstorms and heatwaves. The southwest monsoon, usually from June to September, provides most of the country’s annual rainfall and is central to agriculture, reservoirs and power demand.

For 2024, the IMD reported that the southwest monsoon rainfall for India as a whole was about 108% of the long-period average, placing it in the above-normal category. The long-period average used by the IMD for all-India monsoon rainfall is 87 cm for the 1971–2020 period. However, rainfall distribution varied significantly by region, with some areas facing floods and others experiencing dry spells.

Heatwaves also affected India in 2024. The IMD and India’s Ministry of Earth Sciences reported unusually high temperatures during the pre-monsoon and early summer period. In May 2024, severe heatwave conditions were recorded across parts of northwest and central India. The IMD reported that Delhi’s Mungeshpur station recorded 52.9°C on 29 May 2024, while the agency later said the reading required examination because it was an outlier compared with nearby stations. Reuters reported the same day that parts of Delhi crossed 50°C during the extreme heat episode.

Public health risk rises sharply during prolonged heat, especially when high temperatures combine with humidity. Heat stress can affect outdoor workers, elderly people, children, people with chronic illnesses and those without reliable access to cooling. The India Meteorological Department’s heatwave criteria differ by region and depend on both maximum temperature and departure from normal.

Key Recent Weather and Climate Statistics

• 2024: The WMO reported global average temperature at about 1.55°C above 1850–1900 levels, the warmest year on record.
• 2024: Copernicus said every month from January to June 2024 was warmer than the corresponding month in any previous year in its dataset.
• 2024: IMD reported India’s southwest monsoon rainfall at 108% of the long-period average.
• 2024: Reuters reported severe heat in northern India, with parts of Delhi recording temperatures above 50°C in late May.
• 2024: NOAA said the Atlantic hurricane season produced 18 named storms, including 11 hurricanes and 5 major hurricanes.
• 2025: WMO’s January assessment confirmed 2024 as the warmest year in global datasets and stated that one year above 1.5°C does not mean the Paris Agreement target has been permanently exceeded.

Extreme Rainfall and Flooding

Extreme rainfall is one of the most difficult types of weather to manage because it can develop rapidly and vary sharply over short distances. A city may receive intense rain in one district while another area receives much less. Urban drainage, land use, river levels and slope conditions determine whether rainfall becomes flooding, landslides or waterlogging.

The WMO has reported that a warmer atmosphere can hold more moisture. A widely used physical estimate, based on the Clausius-Clapeyron relationship, is that atmospheric water vapour capacity rises by about 7% for every 1°C of warming. This does not mean rainfall increases everywhere equally, but it helps explain why heavy precipitation events can intensify when weather systems have sufficient moisture and lift.

In South Asia, the monsoon produces both beneficial rainfall and serious flood risk. IMD rainfall monitoring, Central Water Commission river data and state disaster management reports are used to issue warnings. India has expanded automatic weather stations, Doppler radars and forecast products, but flood losses still depend heavily on local exposure, drainage, dam operations, land-use planning and warning response.

Tropical Cyclones and Ocean Conditions

Tropical cyclones draw energy from warm ocean waters. They are monitored by satellite, ocean data, aircraft reconnaissance in some basins and numerical models. In the North Indian Ocean, IMD is the Regional Specialized Meteorological Centre for tropical cyclone advisories.

Globally, tropical cyclone activity varies by basin and year. NOAA reported that the 2024 Atlantic hurricane season had 18 named storms, 11 hurricanes and 5 major hurricanes. The agency said the season was above average. Reuters reported in 2024 that very warm Atlantic waters and changing atmospheric conditions contributed to concerns about hurricane intensity.

In the Bay of Bengal and Arabian Sea, cyclone impacts depend on track, storm surge, wind speed, rainfall, coastal population density and evacuation capacity. Bangladesh and India have reduced cyclone mortality over decades through improved warnings and shelters, according to disaster risk studies and government reporting, though economic and infrastructure damage remains significant during severe storms.

Weather, Agriculture and Water Security

Weather directly affects crop sowing, irrigation, pest outbreaks, harvesting and storage. In India, monsoon timing is closely watched by farmers and commodity markets. Rainfall deficits can increase irrigation demand, while excess rain can damage standing crops or delay harvests. Government agencies use weather forecasts to issue agrometeorological advisories.

Reservoir storage is another weather-sensitive indicator. Monsoon rainfall replenishes reservoirs used for drinking water, irrigation and hydropower. Dry spells can affect water availability, while sudden heavy rain can require controlled releases. The Central Water Commission publishes regular reservoir storage bulletins in India, and state authorities use those reports alongside rainfall forecasts.

Power demand is also weather-linked. Heatwaves increase electricity use for cooling, while cold waves raise heating demand in some regions. Grid operators use temperature forecasts to plan supply and prevent shortages. In 2024, several countries reported record or near-record power demand during heat events, according to government and grid operator releases reported by Reuters.

Public Health and Early Warnings

Weather warnings are public health tools. Heatwaves can cause dehydration, heat exhaustion and heat stroke. Cold waves can increase risk for people without adequate shelter. Heavy rain can contaminate drinking water and increase the risk of waterborne disease. Dust storms can worsen respiratory conditions. Lightning remains a major weather hazard in rural areas.

The WMO’s Early Warnings for All initiative aims to ensure that everyone on Earth is protected by early warning systems. The agency has said gaps remain, especially in low-income countries and small island states. Effective warnings require observation networks, forecast capacity, communication channels and community response plans.

India’s heat action plans, first developed at city level and later expanded by states and agencies, typically include public advisories, changes to work timing, hospital preparedness, drinking water access and outreach to vulnerable groups. Their effectiveness depends on local implementation, warning lead time and access to cooling.

Why Local Weather Can Differ From Global Trends

A colder-than-usual day or a wet season in one region does not contradict global warming data. Weather is local and short-term. Climate statistics are calculated across broader areas and longer periods. A warming world can still produce cold waves, snowstorms and local cool anomalies because atmospheric circulation continues to vary.

At the same time, long-term warming shifts the baseline on which daily weather occurs. This can increase the probability of some heat extremes and affect rainfall intensity. Attribution studies, which use climate models and observations, assess whether climate change made a specific event more likely or more intense. Such studies vary by event and are published by scientific groups, universities and meteorological agencies.

What “As of 2026” Means for Weather Users

As of 2026, weather information is more available than at any point in history, but risk is also more complex. Smartphones can receive alerts within seconds, satellites can track storms over oceans and high-resolution models can update forecasts several times a day. Yet exposure has increased in many locations because of urban growth, coastal development and infrastructure dependence.

For households, the most reliable information remains official weather warnings, local disaster authority instructions and verified public broadcasters. For businesses, weather risk management increasingly includes heat policies for workers, flood planning, backup power, supply-chain monitoring and insurance documentation. For farmers, district-level forecasts and agrometeorological advisories can support decisions on sowing, irrigation and harvesting.

Weather will continue to change from day to day, but the data from 2024 and 2025 show that those daily changes are occurring in a warmer global system. The practical response depends on accurate observation, timely warnings, resilient infrastructure and public access to verified information.

Sources: Reuters, Government releases, publicly available data.