Air Quality
3.1/5
19.0 µg/m³Sensitive Groups
Air Quality Profile
Ratnapura reports an annual PM2.5 of 19.0 µg/m³. That's meaningfully above the WHO 2021 guideline of 5 µg/m³ yet within the EU annual limit of 25 µg/m³.
Ratnapura
Sri Lanka
Sri LankaAnnual Average
ModerateWHO annual classification
19.0µg/m³
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
PM2.5
2525 µg/m³ — Poor
2929 µg/m³ — Poor
3030 µg/m³ — Poor
2626 µg/m³ — Poor
1313 µg/m³ — Fair
1212 µg/m³ — Fair
1515 µg/m³ — Moderate
1212 µg/m³ — Fair
1313 µg/m³ — Fair
1616 µg/m³ — Moderate
1414 µg/m³ — Fair
2323 µg/m³ — Moderate
Jan
Feb
Mar
Apr
May
Jun
2525 µg/m³ — Poor
2929 µg/m³ — Poor
3030 µg/m³ — Poor
2626 µg/m³ — Poor
1313 µg/m³ — Fair
1212 µg/m³ — Fair
Jul
Aug
Sep
Oct
Nov
Dec
1515 µg/m³ — Moderate
1212 µg/m³ — Fair
1313 µg/m³ — Fair
1616 µg/m³ — Moderate
1414 µg/m³ — Fair
2323 µg/m³ — Moderate
Best months: May–Jun, AugWorst months: Feb–Apr
Fair10–15 µg/m³Moderate15–25 µg/m³Poor25–35 µg/m³
Based on WUSTL PM2.5 dataset (2020–2024) · WHO 2021 thresholds
Confidence: ●●●
Air Quality Profile
Ratnapura reports an annual PM2.5 of 19.0 µg/m³. That's meaningfully above the WHO 2021 guideline of 5 µg/m³ yet within the EU annual limit of 25 µg/m³.
RatnapuraSri Lanka
Sri LankaAnnual Average
ModerateWHO annual classification
19.0µg/m³
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
PM2.5
2525 µg/m³ — Poor
2929 µg/m³ — Poor
3030 µg/m³ — Poor
2626 µg/m³ — Poor
1313 µg/m³ — Fair
1212 µg/m³ — Fair
1515 µg/m³ — Moderate
1212 µg/m³ — Fair
1313 µg/m³ — Fair
1616 µg/m³ — Moderate
1414 µg/m³ — Fair
2323 µg/m³ — Moderate
Jan
Feb
Mar
Apr
May
Jun
2525 µg/m³ — Poor
2929 µg/m³ — Poor
3030 µg/m³ — Poor
2626 µg/m³ — Poor
1313 µg/m³ — Fair
1212 µg/m³ — Fair
Jul
Aug
Sep
Oct
Nov
Dec
1515 µg/m³ — Moderate
1212 µg/m³ — Fair
1313 µg/m³ — Fair
1616 µg/m³ — Moderate
1414 µg/m³ — Fair
2323 µg/m³ — Moderate
Best months: May–Jun, AugWorst months: Feb–Apr
Fair10–15 µg/m³Moderate15–25 µg/m³Poor25–35 µg/m³
Based on WUSTL PM2.5 dataset (2020–2024) · WHO 2021 thresholds
Confidence: ●●●
Who thrives in Ratnapura
Things to consider in Ratnapura
PM2.5 annual average of 19.0 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 Ratnapura?
Why not Ratnapura? Honestly, air quality could be better — Ratnapura's 19.0 µg/m³ annual PM2.5 is above WHO guidelines, though still within ranges common for larger cities.
Frequently asked about Ratnapura
▶How many sunny days does Ratnapura have per year?
Ratnapura averages approximately 202 sunny days per year, based on historical climate data.
▶What is the air quality in Ratnapura?
Ratnapura has an annual PM2.5 concentration of 19.0 µg/m³, classified as "Moderate" by WHO standards. Above WHO targets. Some respiratory effects possible with prolonged exposure.