Riga air quality index (AQI).

Historical information for 2019 - 2025 year.

„Mīlgrāvis”
Mīlgrāvja street 10 „Brīvības iela”
Brīvības street 73 „Pārdaugava”
Kantora and Slampes street intersection (56°55'10.7"N 24°03'33.1"E)

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- Value -
5
- Level -
Very good

The main pollutant:
O₃ µg/m³
Date and time:
2026.07.01 01:00
Observation station:
„Mīlgrāvis”

Graphs with detailed values for the last 24h: +

- Value -
29
- Level -
Mediocre

The main pollutant:
NO₂ µg/m³
Date and time:
2026.07.01 05:00
Observation station:
„Brīvības iela”

Graphs with detailed values for the last 24h: +

- Value -
49
- Level -
Very good

The main pollutant:
O₃ µg/m³
Date and time:
2026.07.01 05:00
Observation station:
„Pārdaugava”

Graphs with detailed values for the last 24h: +

AQI major pollutants, zoning and colors.

Level	PM₂.₅ µg/m³ 1 h average	PM₁₀ µg/m³ 1 h average	NO₂ µg/m³ 1 h average	SO₂ µg/m³ 1 h average	O₃ µg/m³ 1 h average
Very good	0-5	0-15	0-10	0-20	0-60
Good	6-15	16-45	11-25	21-40	61-100
Mediocre	16-50	46-120	26-60	41-125	101-120
Bad	51-90	121-195	61-100	126-190	121-160
Very bad	91-140	196-270	101-150	191-275	161-180
Especially bad	>140	>270	>150	>275	>180

Pollution assessment was performed using operational data before data quality control.

Data for further analysis by year (Older data is available in the historical information section): +

Since the 1st of January 2026, changes have been introduced on the Riga State City Municipality air quality monitoring website regarding how air quality monitoring data is displayed, in accordance with the requirements of the European Parliament and Council Directive (EU) 2024/2881 on air quality and cleaner air for Europe.

Updated air quality assessment limit values and classification indicators have been applied for the following pollutants:

PM₂.₅ (µg/m³);
PM₁₀ (µg/m³);
NO₂ (µg/m³);
SO₂ (µg/m³);
O₃ (µg/m³).

Along with these changes, the tables and air quality assessments now use the current limit values required by the European Union, ensuring a unified and comparable interpretation of air quality data.

Historical air quality monitoring data for the period from 2019 to 2026 has been preserved and is available in the section "Historical information for 2019 - 2025 year."

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