SmogRank / India

Air quality in Salem estimated

Tamil Nadu, India. No ground monitor we can use is in this city, so these numbers are model estimates, not measurements.

≈ 27 µg/m³
Moderate

Estimated PM2.5, 7-day average to 2026-09-30, about 1.8× the WHO 24-hour guideline. 30-day average ≈ 26 µg/m³.

Model estimate from the Copernicus Atmosphere Monitoring Service (CAMS), scaled by 1.62 to match 10 measured cities within 300 km over the last week. Adjusted this way, a single day lands within ×1.5 of what a monitor would read about two times in three: a guide, not a measurement. Not ranked on SmogRank's boards.

Last 30 days, estimated

152026-09-01: ≈ 20 µg/m³ (estimate)09-012026-09-02: ≈ 19 µg/m³ (estimate)2026-09-03: ≈ 25 µg/m³ (estimate)2026-09-04: ≈ 22 µg/m³ (estimate)2026-09-05: ≈ 24 µg/m³ (estimate)2026-09-06: ≈ 27 µg/m³ (estimate)2026-09-07: ≈ 25 µg/m³ (estimate)2026-09-08: ≈ 28 µg/m³ (estimate)09-082026-09-09: ≈ 23 µg/m³ (estimate)2026-09-10: ≈ 21 µg/m³ (estimate)2026-09-11: ≈ 22 µg/m³ (estimate)2026-09-12: ≈ 26 µg/m³ (estimate)2026-09-13: ≈ 32 µg/m³ (estimate)2026-09-14: ≈ 39 µg/m³ (estimate)2026-09-15: ≈ 30 µg/m³ (estimate)09-152026-09-16: ≈ 32 µg/m³ (estimate)2026-09-17: ≈ 27 µg/m³ (estimate)2026-09-18: ≈ 29 µg/m³ (estimate)2026-09-19: ≈ 27 µg/m³ (estimate)2026-09-20: ≈ 18 µg/m³ (estimate)2026-09-21: ≈ 15 µg/m³ (estimate)2026-09-22: ≈ 21 µg/m³ (estimate)09-222026-09-23: ≈ 38 µg/m³ (estimate)2026-09-24: ≈ 30 µg/m³ (estimate)2026-09-25: ≈ 16 µg/m³ (estimate)2026-09-26: ≈ 19 µg/m³ (estimate)2026-09-27: ≈ 33 µg/m³ (estimate)2026-09-28: ≈ 33 µg/m³ (estimate)2026-09-29: ≈ 33 µg/m³ (estimate)09-292026-09-30: ≈ 27 µg/m³ (estimate)

Daily means, UTC days. Dashed line: WHO 24-hour guideline (15 µg/m³).

Measured cities nearby

CityDistance7-day average
Perundurai75 km–
Coimbatore148 km–
Closepet152 km17.8 µg/m³
Bengaluru159 km18.1 µg/m³
Kolār165 km–
Cuddalore176 km–

Estimates contain modified Copernicus Atmosphere Monitoring Service information 2026. How estimates are made.