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Why can I smell rain before it actually starts to rain?

Mark Sterling
Mark Sterling
Research Editor · Jan 2, 2026 · Updated Apr 13, 2026

You were probably smelling ozone. Oxygen is normally two atoms of oxygen linked together. Ozone is three atoms of oxygen linked together.

75
Words

1 min
Read Time

#188
of 500 in Space & Astronomy

+10%
vs Category Avg

The Short Answer

You were probably smelling ozone. Oxygen is normally two atoms of oxygen linked together. Ozone is three atoms of oxygen linked together. When a storm is approaching, lightning from the storm can split nitrogen and oxygen atoms in the atmosphere up. Some of these recombine to form oxygen again or other compounds, but sometimes they can form ozone. The air from the storm rushing down towards the ground then carries that ozone to your nose.

Analysis

Key Concepts: Oxygen, ozone, atoms

This explanation focuses on oxygen, ozone, atoms and spans 75 words across 6 sentences. The depth is typical for Space & Astronomy questions (category average: 68 words), striking a balance between accessibility and completeness.

What This Answer Covers

The explanation opens with: “You were probably smelling ozone.” It then elaborates by presenting a contrasting perspective, ultimately building toward a complete picture across 6 connected points.

How This Compares in Space & Astronomy

Ranked #188 of 500 Space & Astronomy questions by answer depth (top 38%). This falls in the detailed tier — above average depth. The explanation goes beyond surface-level but keeps things accessible.

Frequently Asked Questions

Is there a simple explanation for why i smell rain before it actually starts to rain?

You were probably smelling ozone. Oxygen is normally two atoms of oxygen linked together. Ozone is three atoms of oxygen linked together. When a storm is approaching, lightning from the storm can split nitrogen and oxygen atoms in the atmosphere…

How detailed is this explanation compared to similar Space & Astronomy questions?

This is an above-average answer at 75 words, ranked #188 of 500 Space & Astronomy questions by depth. The key concepts covered are oxygen, ozone, atoms.

What approach does this answer take to explain i smell rain before it actually starts to rain?

The explanation uses contrasting perspectives across 75 words. It is categorized under Space & Astronomy and addresses the question through 1 analytical lens.