Air Quality
0.8/5
49.5 µg/m³Very Unhealthy
Air Quality Profile
Onitsha reports an annual PM2.5 of 49.5 µg/m³. That's above the EU annual limit of 25 µg/m³ — long-term exposure here carries documented health trade-offs.
Onitsha
Nigeria
NigeriaAnnual Average
UnhealthyWHO annual classification
49.5µg/m³
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
PM2.5
8888 µg/m³ — Hazardous
7878 µg/m³ — Hazardous
5353 µg/m³ — Very Unhealthy
3939 µg/m³ — Unhealthy
3434 µg/m³ — Poor
3333 µg/m³ — Poor
3737 µg/m³ — Unhealthy
3939 µg/m³ — Unhealthy
2727 µg/m³ — Poor
3939 µg/m³ — Unhealthy
5757 µg/m³ — Very Unhealthy
7070 µg/m³ — Very Unhealthy
Jan
Feb
Mar
Apr
May
Jun
8888 µg/m³ — Hazardous
7878 µg/m³ — Hazardous
5353 µg/m³ — Very Unhealthy
3939 µg/m³ — Unhealthy
3434 µg/m³ — Poor
3333 µg/m³ — Poor
Jul
Aug
Sep
Oct
Nov
Dec
3737 µg/m³ — Unhealthy
3939 µg/m³ — Unhealthy
2727 µg/m³ — Poor
3939 µg/m³ — Unhealthy
5757 µg/m³ — Very Unhealthy
7070 µg/m³ — Very Unhealthy
Best months: May–Jun, SepWorst months: Jan–Feb, Dec
Poor25–35 µg/m³Unhealthy35–50 µg/m³Very Unhealthy50–75 µg/m³Hazardous>75 µg/m³
Based on WUSTL PM2.5 dataset (2020–2024) · WHO 2021 thresholds
Confidence: ●●●
Air Quality Profile
Onitsha reports an annual PM2.5 of 49.5 µg/m³. That's above the EU annual limit of 25 µg/m³ — long-term exposure here carries documented health trade-offs.
OnitshaNigeria
NigeriaAnnual Average
UnhealthyWHO annual classification
49.5µg/m³
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
PM2.5
8888 µg/m³ — Hazardous
7878 µg/m³ — Hazardous
5353 µg/m³ — Very Unhealthy
3939 µg/m³ — Unhealthy
3434 µg/m³ — Poor
3333 µg/m³ — Poor
3737 µg/m³ — Unhealthy
3939 µg/m³ — Unhealthy
2727 µg/m³ — Poor
3939 µg/m³ — Unhealthy
5757 µg/m³ — Very Unhealthy
7070 µg/m³ — Very Unhealthy
Jan
Feb
Mar
Apr
May
Jun
8888 µg/m³ — Hazardous
7878 µg/m³ — Hazardous
5353 µg/m³ — Very Unhealthy
3939 µg/m³ — Unhealthy
3434 µg/m³ — Poor
3333 µg/m³ — Poor
Jul
Aug
Sep
Oct
Nov
Dec
3737 µg/m³ — Unhealthy
3939 µg/m³ — Unhealthy
2727 µg/m³ — Poor
3939 µg/m³ — Unhealthy
5757 µg/m³ — Very Unhealthy
7070 µg/m³ — Very Unhealthy
Best months: May–Jun, SepWorst months: Jan–Feb, Dec
Poor25–35 µg/m³Unhealthy35–50 µg/m³Very Unhealthy50–75 µg/m³Hazardous>75 µg/m³
Based on WUSTL PM2.5 dataset (2020–2024) · WHO 2021 thresholds
Confidence: ●●●
Who thrives in Onitsha
Things to consider in Onitsha
Air Quality
PM2.5 annual average of 49.5 µg/m³ exceeds the WHO interim target of 15 µg/m³.
The WHO guideline value is 5 µg/m³.
Data sources: WHO (air quality), OECD (safety).
Why not Onitsha?
Why not Onitsha? Honestly, air quality is a genuine health trade-off — Onitsha's annual PM2.5 of 49.5 µg/m³ exceeds the EU limit and WHO standards by a wide margin, with respiratory impacts documented at these levels.
About Onitsha
Mobility
▶Public Transit
Insufficient transit-feed data to measure coverage.
Frequently asked about Onitsha
▶How many sunny days does Onitsha have per year?
Onitsha averages approximately 179 sunny days per year, based on historical climate data.
▶What is the air quality in Onitsha?
Onitsha has an annual PM2.5 concentration of 49.5 µg/m³, classified as "Unhealthy" by WHO standards. Far exceeds WHO targets. Respiratory and cardiovascular effects likely.