SmogRank / Peru / Lima region

Air quality in San Francisco De Borja

Lima region, Peru. PM2.5 from 2 reference monitors, updated hourly.

13.3 µg/m³
Moderate

Mean for 29 Sept, the most recent day with readings, 0.9× the WHO 24-hour guideline. No hourly readings have reached us since; some networks publish days late.

Rank

24 h
–
not enough data
7 days
–
not enough data
30 days
–
not enough data
Year
#214
of 2,173 · 21.9 µg/m³

Hour by hour

No hourly readings in the last few days. The chart returns when the monitors' data arrives.

Every day for a year

SepNovDecJanFebMarAprMayJunJulAugSepMonWedFri2025-09-29: 33.8 µg/m³2025-09-30: 29.1 µg/m³2025-10-01: 26.6 µg/m³2025-10-02: 26.5 µg/m³2025-10-03: 21.6 µg/m³2025-10-04: 19.4 µg/m³2025-10-05: 17.9 µg/m³2025-10-06: 21.2 µg/m³2025-10-07: 22.9 µg/m³2025-10-08: 25.8 µg/m³2025-10-09: 23.9 µg/m³2025-10-10: 28.2 µg/m³2025-10-11: 21.3 µg/m³2025-10-12: 33.7 µg/m³2025-10-13: 26.7 µg/m³2025-10-14: 25.0 µg/m³2025-10-15: 21.1 µg/m³2025-10-16: 15.4 µg/m³2025-10-17: 16.9 µg/m³2025-10-18: 13.5 µg/m³2025-10-19: 10.0 µg/m³2025-10-20: 21.7 µg/m³2025-10-21: 28.5 µg/m³2025-10-22: 28.1 µg/m³2025-10-23: 25.2 µg/m³2025-10-24: 25.0 µg/m³2025-10-25: 20.4 µg/m³2025-10-26: 21.5 µg/m³2025-10-27: 21.2 µg/m³2025-10-28: 31.1 µg/m³2025-10-29: 28.8 µg/m³2025-10-30: 32.9 µg/m³2025-10-31: 25.7 µg/m³2025-11-01: 25.4 µg/m³2025-11-02: 21.2 µg/m³2025-11-03: 21.9 µg/m³2025-11-04: 32.0 µg/m³2025-11-05: 24.7 µg/m³2025-11-06: 31.2 µg/m³2025-11-07: 26.8 µg/m³2025-11-08: 23.5 µg/m³2025-11-09: 28.4 µg/m³2025-11-10: 30.9 µg/m³2025-11-11: 36.2 µg/m³2025-11-12: 34.8 µg/m³2025-11-13: 26.3 µg/m³2025-11-14: 20.9 µg/m³2025-11-15: 22.0 µg/m³2025-11-16: 19.4 µg/m³2025-11-17: 27.2 µg/m³2025-11-18: 17.5 µg/m³2025-11-19: 18.7 µg/m³2025-11-20: 14.6 µg/m³2025-11-21: 12.3 µg/m³2025-11-22: 23.0 µg/m³2025-11-23: 24.5 µg/m³2025-11-24: 25.6 µg/m³2025-11-25: 29.2 µg/m³2025-11-26: 25.7 µg/m³2025-11-27: 23.8 µg/m³2025-11-28: 25.8 µg/m³2025-11-29: 21.8 µg/m³2025-11-30: 19.3 µg/m³2025-12-01: 24.9 µg/m³2025-12-02: 20.1 µg/m³2025-12-03: 17.8 µg/m³2025-12-04: 21.3 µg/m³2025-12-05: 15.8 µg/m³2025-12-06: 16.2 µg/m³2025-12-07: 15.7 µg/m³2025-12-08: 19.7 µg/m³2025-12-09: 20.6 µg/m³2025-12-10: 13.8 µg/m³2025-12-11: 13.6 µg/m³2025-12-12: 19.2 µg/m³2025-12-13: 23.9 µg/m³2025-12-14: 23.8 µg/m³2025-12-15: 27.0 µg/m³2025-12-16: 29.9 µg/m³2025-12-17: 24.2 µg/m³2025-12-18: 23.2 µg/m³2025-12-19: 31.2 µg/m³2025-12-20: 24.9 µg/m³2025-12-21: 23.0 µg/m³2025-12-22: 25.5 µg/m³2025-12-23: 19.6 µg/m³2025-12-24: 22.6 µg/m³2025-12-25: 38.3 µg/m³2025-12-26: 23.7 µg/m³2025-12-27: 26.6 µg/m³2025-12-28: 30.2 µg/m³2025-12-29: 29.3 µg/m³2025-12-30: 23.5 µg/m³2025-12-31: 25.4 µg/m³2026-01-01: 42.3 µg/m³2026-01-02: 16.1 µg/m³2026-01-03: 21.3 µg/m³2026-01-04: 16.8 µg/m³2026-01-05: 21.5 µg/m³2026-01-06: 20.0 µg/m³2026-01-07: 14.6 µg/m³2026-01-08: 15.7 µg/m³2026-01-09: 16.1 µg/m³2026-01-10: 19.4 µg/m³2026-01-11: 15.7 µg/m³2026-01-12: 14.9 µg/m³2026-01-13: 12.0 µg/m³2026-01-14: 14.6 µg/m³2026-01-15: no data2026-01-16: no data2026-01-17: 16.0 µg/m³2026-01-18: 16.2 µg/m³2026-01-19: 13.5 µg/m³2026-01-20: 15.5 µg/m³2026-01-21: 16.7 µg/m³2026-01-22: 18.2 µg/m³2026-01-23: no data2026-01-24: no data2026-01-25: 13.5 µg/m³2026-01-26: 17.4 µg/m³2026-01-27: 16.1 µg/m³2026-01-28: 16.2 µg/m³2026-01-29: 11.8 µg/m³2026-01-30: 15.3 µg/m³2026-01-31: 13.3 µg/m³2026-02-01: 11.5 µg/m³2026-02-02: 15.9 µg/m³2026-02-03: 14.1 µg/m³2026-02-04: 13.5 µg/m³2026-02-05: 13.2 µg/m³2026-02-06: 19.0 µg/m³2026-02-07: 19.1 µg/m³2026-02-08: 11.3 µg/m³2026-02-09: 14.9 µg/m³2026-02-10: 19.3 µg/m³2026-02-11: 17.2 µg/m³2026-02-12: 17.0 µg/m³2026-02-13: 17.6 µg/m³2026-02-14: 17.2 µg/m³2026-02-15: 13.8 µg/m³2026-02-16: 11.9 µg/m³2026-02-17: 13.4 µg/m³2026-02-18: 17.7 µg/m³2026-02-19: 15.1 µg/m³2026-02-20: 14.2 µg/m³2026-02-21: 14.8 µg/m³2026-02-22: 12.5 µg/m³2026-02-23: 15.3 µg/m³2026-02-24: 14.6 µg/m³2026-02-25: 12.3 µg/m³2026-02-26: 17.3 µg/m³2026-02-27: 15.3 µg/m³2026-02-28: 12.3 µg/m³2026-03-01: 17.8 µg/m³2026-03-02: 17.2 µg/m³2026-03-03: 17.9 µg/m³2026-03-04: 19.3 µg/m³2026-03-05: 19.0 µg/m³2026-03-06: 16.8 µg/m³2026-03-07: 14.5 µg/m³2026-03-08: 12.6 µg/m³2026-03-09: 23.3 µg/m³2026-03-10: 26.0 µg/m³2026-03-11: 20.0 µg/m³2026-03-12: 24.0 µg/m³2026-03-13: 21.1 µg/m³2026-03-14: 22.0 µg/m³2026-03-15: 19.0 µg/m³2026-03-16: 18.9 µg/m³2026-03-17: 20.2 µg/m³2026-03-18: 20.2 µg/m³2026-03-19: 17.8 µg/m³2026-03-20: 19.4 µg/m³2026-03-21: 22.1 µg/m³2026-03-22: 19.7 µg/m³2026-03-23: 34.1 µg/m³2026-03-24: 24.7 µg/m³2026-03-25: 37.0 µg/m³2026-03-26: 27.5 µg/m³2026-03-27: 23.0 µg/m³2026-03-28: 26.1 µg/m³2026-03-29: 28.5 µg/m³2026-03-30: 29.2 µg/m³2026-03-31: 25.0 µg/m³2026-04-01: 26.9 µg/m³2026-04-02: 21.2 µg/m³2026-04-03: 22.4 µg/m³2026-04-04: 21.1 µg/m³2026-04-05: 17.1 µg/m³2026-04-06: 16.1 µg/m³2026-04-07: 16.7 µg/m³2026-04-08: 21.2 µg/m³2026-04-09: 24.4 µg/m³2026-04-10: 24.9 µg/m³2026-04-11: 23.7 µg/m³2026-04-12: 28.0 µg/m³2026-04-13: 25.6 µg/m³2026-04-14: 22.9 µg/m³2026-04-15: 29.0 µg/m³2026-04-16: 25.3 µg/m³2026-04-17: 23.6 µg/m³2026-04-18: 19.9 µg/m³2026-04-19: 18.4 µg/m³2026-04-20: 24.8 µg/m³2026-04-21: 28.0 µg/m³2026-04-22: 34.1 µg/m³2026-04-23: 20.3 µg/m³2026-04-24: 22.3 µg/m³2026-04-25: 42.4 µg/m³2026-04-26: 32.2 µg/m³2026-04-27: 30.0 µg/m³2026-04-28: 33.2 µg/m³2026-04-29: 33.6 µg/m³2026-04-30: 42.2 µg/m³2026-05-01: 80.8 µg/m³2026-05-02: 74.2 µg/m³2026-05-03: 73.4 µg/m³2026-05-04: 34.2 µg/m³2026-05-05: 32.2 µg/m³2026-05-06: 29.7 µg/m³2026-05-07: 21.1 µg/m³2026-05-08: 17.3 µg/m³2026-05-09: 21.9 µg/m³2026-05-10: 21.7 µg/m³2026-05-11: 22.5 µg/m³2026-05-12: 13.7 µg/m³2026-05-13: 15.0 µg/m³2026-05-14: 19.0 µg/m³2026-05-15: 20.5 µg/m³2026-05-16: 24.3 µg/m³2026-05-17: 24.8 µg/m³2026-05-18: 24.5 µg/m³2026-05-19: 20.8 µg/m³2026-05-20: 22.0 µg/m³2026-05-21: 29.8 µg/m³2026-05-22: 25.5 µg/m³2026-05-23: 27.9 µg/m³2026-05-24: 20.7 µg/m³2026-05-25: 17.8 µg/m³2026-05-26: 36.4 µg/m³2026-05-27: 19.5 µg/m³2026-05-28: 22.0 µg/m³2026-05-29: 32.0 µg/m³2026-05-30: 37.9 µg/m³2026-05-31: 33.7 µg/m³2026-06-01: 29.8 µg/m³2026-06-02: 21.1 µg/m³2026-06-03: 21.7 µg/m³2026-06-04: 35.6 µg/m³2026-06-05: 21.5 µg/m³2026-06-06: 17.7 µg/m³2026-06-07: 14.5 µg/m³2026-06-08: 16.6 µg/m³2026-06-09: 20.6 µg/m³2026-06-10: 19.6 µg/m³2026-06-11: 19.8 µg/m³2026-06-12: 18.8 µg/m³2026-06-13: 17.1 µg/m³2026-06-14: 20.4 µg/m³2026-06-15: 24.1 µg/m³2026-06-16: 21.2 µg/m³2026-06-17: 18.3 µg/m³2026-06-18: 15.0 µg/m³2026-06-19: 14.3 µg/m³2026-06-20: 17.4 µg/m³2026-06-21: 12.3 µg/m³2026-06-22: 19.9 µg/m³2026-06-23: 23.5 µg/m³2026-06-24: 26.4 µg/m³2026-06-25: 26.6 µg/m³2026-06-26: 25.5 µg/m³2026-06-27: 22.9 µg/m³2026-06-28: 27.9 µg/m³2026-06-29: 25.1 µg/m³2026-06-30: 23.6 µg/m³2026-07-01: 19.3 µg/m³2026-07-02: 22.7 µg/m³2026-07-03: 43.4 µg/m³2026-07-04: 44.4 µg/m³2026-07-05: 11.0 µg/m³2026-07-06: 23.0 µg/m³2026-07-07: 26.7 µg/m³2026-07-08: no data2026-07-09: no data2026-07-10: no data2026-07-11: no data2026-07-12: no data2026-07-13: no data2026-07-14: no data2026-07-15: no data2026-07-16: no data2026-07-17: no data2026-07-18: no data2026-07-19: no data2026-07-20: no data2026-07-21: no data2026-07-22: no data2026-07-23: no data2026-07-24: 22.2 µg/m³2026-07-25: 24.1 µg/m³2026-07-26: no data2026-07-27: no data2026-07-28: no data2026-07-29: no data2026-07-30: no data2026-07-31: 21.0 µg/m³2026-08-01: no data2026-08-02: no data2026-08-03: 17.6 µg/m³2026-08-04: no data2026-08-05: 28.9 µg/m³2026-08-06: 16.8 µg/m³2026-08-07: no data2026-08-08: no data2026-08-09: 22.8 µg/m³2026-08-10: 26.8 µg/m³2026-08-11: no data2026-08-12: 18.9 µg/m³2026-08-13: no data2026-08-14: no data2026-08-15: 9.0 µg/m³2026-08-16: no data2026-08-17: no data2026-08-18: no data2026-08-19: no data2026-08-20: no data2026-08-21: no data2026-08-22: 22.6 µg/m³2026-08-23: no data2026-08-24: 22.7 µg/m³2026-08-25: 20.4 µg/m³2026-08-26: no data2026-08-27: 16.9 µg/m³2026-08-28: no data2026-08-29: no data2026-08-30: no data2026-08-31: no data2026-09-01: 12.5 µg/m³2026-09-02: 16.9 µg/m³2026-09-03: 18.0 µg/m³2026-09-04: no data2026-09-05: no data2026-09-06: no data2026-09-07: no data2026-09-08: no data2026-09-09: no data2026-09-10: no data2026-09-11: no data2026-09-12: no data2026-09-13: no data2026-09-14: 11.6 µg/m³2026-09-15: 19.3 µg/m³2026-09-16: no data2026-09-17: no data2026-09-18: no data2026-09-19: 15.3 µg/m³2026-09-20: no data2026-09-21: no data2026-09-22: no data2026-09-23: no data2026-09-24: no data2026-09-25: no data2026-09-26: no data2026-09-27: no data2026-09-28: no data2026-09-29: 13.3 µg/m³2026-09-30: no data
Good 0–9.0Moderate 9.1+Unhealthy for sensitive groups 35.5+Unhealthy 55.5+Very unhealthy 125.5+Hazardous 225.5+No data

255 of 297 measured days were over the WHO 24-hour guideline.

Daily world rank

#1#1088OctNovDecJanFebMarAprMayJunJulAugSep

Rank on each day's board (1 = most polluted city that day).

2026 against 2025, month by month

15Jan 2025: 16.2 µg/m³Jan 2026: 17.1 µg/m³JanFeb 2025: 16.3 µg/m³Feb 2026: 15.0 µg/m³FebMar 2025: 16.8 µg/m³Mar 2026: 22.1 µg/m³MarApr 2025: 21.3 µg/m³Apr 2026: 25.7 µg/m³AprMay 2025: 32.6 µg/m³May 2026: 29.6 µg/m³MayJun 2025: 24.9 µg/m³Jun 2026: 21.3 µg/m³JunJul 2025: 28.6 µg/m³Jul 2026: 25.8 µg/m³JulAug 2025: 26.2 µg/m³Aug 2026: 20.3 µg/m³AugSep 2025: 30.6 µg/m³SepOct 2025: 23.5 µg/m³OctNov 2025: 24.5 µg/m³NovDec 2025: 23.0 µg/m³Dec

Faded bars: 2025. A month shows once it has 10 measured days.

Monitors

StationOperatorType
SAN BORJAODC-By 1.0 (SENAMHI, Peru)SenamhiReference
CAMPO DE MARTEODC-By 1.0 (SENAMHI, Peru)SenamhiReference

The city's value is the median of its reference monitors each hour; low-cost sensors are listed but not counted when reference monitors exist. Data via OpenAQ; licences as listed. How we rank. Embed this on your site.

Updated 2026-10-01 12:07 UTC. Values are PM2.5 in µg/m³ (fine particles), the median of each city's monitors.