Estimated difference between the most recent month's temperature and the reference temperature for that month from the 1951-1980 base period. Temperature differences are reported in degrees Celsius (C) over land and sea.

April 2024 Surface Temperature Anomalies

Most recent available past 24-hour average concentration of fine particulate matter (PM2.5) in micrograms per cubic meter (µg/m³). As of the last update, the 24-hour average is calculated based on all measurements between November 06, 2023 00:00 UTC and November 07, 2023 00:00 UTC.

Classes are based on standards set by U.S. Environmental Protection Agency and are defined as follows: Good=0.0-12.0 µg/m³, Moderate=12.1-35.4 µg/m³, Unhealthy for Sensitive Groups=35.5-55.4 µg/m³, Unhealthy=55.5-150.4 µg/m³, Very Unhealthy=150.5-250.4 µg/m³, and Hazardous=250.5-500 µg/m³.

April 2024 Surface Temperature Anomalies

Latest 24-hour Average PM2.5 Concentration (µg/m³)

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