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Air quality · Latvia

Riga Air Quality Index (AQI) today

Modelled estimate for 14:00 local time (UTC+2), refreshed 3 Nov, 07:52 UTC+0.

23 Good

Live estimate · modelled

US EPA AQI14:00 UTC+2, 3 Nov Main pollutant: O₃

Air quality is satisfactory, and air pollution poses little or no risk.

This page uses EPA’s NowCast, which follows the last few hours, as the US government’s AirNow does. On a 24-hour average of particles, as many apps show, it is 56.

Over the next 24 hours the model expects the AQI to range from 26 around 15:00 to 44 around 09:00 (4 Nov).

824th most polluted of 849 cities worldwide right now.

What to do today

  • Long walk or run outside OK
  • Kids playing outside OK
  • Airing the house Open
  • Mask outdoors Not needed

Based on the US EPA’s health statement: “Air quality is satisfactory, and air pollution poses little or no risk.” General guidance, not medical advice.

Last 24 hours and next 48

Past hours Forecast

15:00 · 39 16:00 · 47 17:00 · 54 18:00 · 62 19:00 · 69 20:00 · 73 21:00 · 75 22:00 · 74 23:00 · 71 00:00 · 67 01:00 · 62 02:00 · 59 03:00 · 56 04:00 · 55 05:00 · 55 06:00 · 55 07:00 · 55 08:00 · 52 09:00 · 44 10:00 · 34 11:00 · 28 12:00 · 21 13:00 · 20 14:00 · 23 15:00 · 26 16:00 · 29 17:00 · 31 18:00 · 34 19:00 · 38 20:00 · 39 21:00 · 38 22:00 · 34 23:00 · 31 00:00 · 31 01:00 · 31 02:00 · 30 03:00 · 30 04:00 · 29 05:00 · 28 06:00 · 27 07:00 · 29 08:00 · 37 09:00 · 44 10:00 · 39 11:00 · 38 12:00 · 39 13:00 · 37 14:00 · 37 15:00 · 34 16:00 · 36 17:00 · 40 18:00 · 46 19:00 · 46 20:00 · 43 21:00 · 39 22:00 · 35 23:00 · 32 00:00 · 28 01:00 · 27 02:00 · 28 03:00 · 29 04:00 · 29 05:00 · 30 06:00 · 31 07:00 · 31 08:00 · 31 09:00 · 31 Now

US EPA AQI per hour, UTC+2. Particles use EPA’s NowCast (a 12-hour weighted average), ozone and CO an 8-hour average. Lighter bars are the CAMS forecast.

Show as a table
TimeAQI
Mon 15:0039
Mon 16:0047
Mon 17:0054
Mon 18:0062
Mon 19:0069
Mon 20:0073
Mon 21:0075
Mon 22:0074
Mon 23:0071
Tue 00:0067
Tue 01:0062
Tue 02:0059
Tue 03:0056
Tue 04:0055
Tue 05:0055
Tue 06:0055
Tue 07:0055
Tue 08:0052
Tue 09:0044
Tue 10:0034
Tue 11:0028
Tue 12:0021
Tue 13:0020
Tue 14:00 · Now23
Tue 15:00 · Forecast26
Tue 16:00 · Forecast29
Tue 17:00 · Forecast31
Tue 18:00 · Forecast34
Tue 19:00 · Forecast38
Tue 20:00 · Forecast39
Tue 21:00 · Forecast38
Tue 22:00 · Forecast34
Tue 23:00 · Forecast31
Wed 00:00 · Forecast31
Wed 01:00 · Forecast31
Wed 02:00 · Forecast30
Wed 03:00 · Forecast30
Wed 04:00 · Forecast29
Wed 05:00 · Forecast28
Wed 06:00 · Forecast27
Wed 07:00 · Forecast29
Wed 08:00 · Forecast37
Wed 09:00 · Forecast44
Wed 10:00 · Forecast39
Wed 11:00 · Forecast38
Wed 12:00 · Forecast39
Wed 13:00 · Forecast37
Wed 14:00 · Forecast37
Wed 15:00 · Forecast34
Wed 16:00 · Forecast36
Wed 17:00 · Forecast40
Wed 18:00 · Forecast46
Wed 19:00 · Forecast46
Wed 20:00 · Forecast43
Wed 21:00 · Forecast39
Wed 22:00 · Forecast35
Wed 23:00 · Forecast32
Thu 00:00 · Forecast28
Thu 01:00 · Forecast27
Thu 02:00 · Forecast28
Thu 03:00 · Forecast29
Thu 04:00 · Forecast29
Thu 05:00 · Forecast30
Thu 06:00 · Forecast31
Thu 07:00 · Forecast31
Thu 08:00 · Forecast31
Thu 09:00 · Forecast31

Pollutants this hour

  • PM2.5 3.2 µg/m³ 24-hour mean 11.8 µg/m³ · within WHO’s 24-hour guideline (15) 18
  • PM10 6 µg/m³ 5
  • O₃ 70 µg/m³ 23
  • NO₂ 4 µg/m³ 2
  • SO₂ 1 µg/m³ 0
  • CO 0.15 mg/m³ 1

Modelled concentrations at the city’s location (CAMS). The sub-index uses the same averaging as the headline, so the highest one is the AQI.

Nearby cities

City AQI
Vilnius Lithuania 28
Tallinn Estonia 31
Helsinki Finland 27
Minsk Belarus 49
Stockholm Sweden 21
Saint Petersburg Russia 39
Warsaw Poland 61

Where this number comes from

The Copernicus Atmosphere Monitoring Service (CAMS) forecasts air pollution worldwide on a grid (about 11 km over Europe, about 45 km elsewhere). We take the grid value at Riga’s coordinates and score it with the US EPA’s method. It is a model, not a measurement: a nearby monitoring station can read quite differently, especially next to busy roads or during fires and dust storms.

Full methodology · Data: CAMS via Open-Meteo (CC BY 4.0); city list: GeoNames (CC BY 4.0).

  • Good 0–50
  • Moderate 51–100
  • Unhealthy for sensitive groups 101–150
  • Unhealthy 151–200
  • Very unhealthy 201–300
  • Hazardous 301–500

Questions

What is the AQI in Riga right now?
23 on the US EPA scale (Good) at 14:00 UTC+2, 3 Nov. O₃ is the pollutant with the highest sub-index. This is a modelled estimate from the Copernicus Atmosphere Monitoring Service (CAMS), not a reading from a monitoring station.

Is it safe to exercise outside in Riga today?
For most people, yes. The EPA’s statement for “Good”: Air quality is satisfactory, and air pollution poses little or no risk. General guidance, not medical advice.

Will the air in Riga get better or worse tomorrow?
Over the next 24 hours the model expects the AQI to range from 26 around 15:00 to 44 around 09:00 (4 Nov). Forecasts beyond a day are less certain.

How does Riga compare with other cities?
Right now it is the 824th most polluted of 849 cities we track worldwide, all on the same US EPA scale.

Why does another app show a different AQI for Riga?
Apps differ in source (government stations, low-cost sensors or a model like this one), in scale (US EPA, European, or a national index) and in averaging (hourly or NowCast, 8-hour, 24-hour). This page uses the US EPA AQI with EPA’s NowCast for particles, computed from the CAMS forecast for the city’s location.