Air at the HUM (otok Vis) station
Komiža, Croatia
Network: Državna mreža za trajno praćenje kvalitete zraka · Station code: HR0018A
This year, up to the last reading (September 29)
at least
98 days
with an 8-hour average of ozone (O₃) above the target value of 120 µg/m³.
The target value allows 25 such days a year, averaged over three years.
Worst day: April 27, 2026, O₃ 162 µg/m³ as a daily average, 1.3 times the limit.
Daily average for 246 of 279 days · data for 2026 not yet finally verified · Yardstick: EU limits (Directive 2008/50/EC)
No data has arrived from this station since September 29, 2026 at 14:00
No reading for 8 days.
We take the readings from the European Environment Agency (EEA), and no new values for this station are coming from there. The cause may lie with the station itself or with the data transmission.
Last reading: September 29, 2026 at 14:00
Measured then: O₃ 123.2 µg/m³
Nearest station measuring now: Split-3, Split, Croatia, about 59 km away.
That reading is from another place. Your air may be better or worse.
How the air is changing
There are not enough readings to compare with the week before.
- O₃: too few readings to compare
Last month there was less O₃ in the air than the month before.
- O₃: average 102 µg/m³, month before 117.1 µg/m³
Ozone O₃
no measurement
Now
too few readings
Last 24 hours
measured in 0 % of hours
too few readings
Last 7 days
measured in 0 % of hours
too few readings
Last 30 days
measured in 74 % of hours · provisional
too few readings
Last 12 months
measured in 89 % of hours · 1 month with too few readings · provisional
Days in 2024: O₃, 8-hour average above 120 µg/m³
49 days above the limit. 30 days without any reading from the station.
- above the limit
- below the limit
- too few readings for the day
- no data from the station
Days above the limit with values (49)
- Apr 7 122
- Apr 13 121
- Apr 30 124
- May 1 123
- May 11 131
- May 12 125
- May 13 126
- Jun 7 134
- Jun 8 133
- Jun 9 121
- Jun 22 120
- Jun 28 125
- Jun 29 123
- Jun 30 122
- Jul 19 127
- Jul 20 140
- Jul 21 137
- Jul 22 133
- Jul 23 122
- Jul 24 129
- Jul 26 122
- Jul 28 127
- Jul 30 124
- Jul 31 136
- Aug 1 146
- Aug 2 149
- Aug 3 134
- Aug 4 125
- Aug 5 126
- Aug 7 133
- Aug 8 137
- Aug 9 130
- Aug 15 128
- Aug 16 128
- Aug 17 130
- Aug 18 135
- Aug 22 128
- Aug 23 127
- Aug 24 129
- Aug 25 132
- Aug 26 149
- Aug 27 135
- Aug 28 136
- Aug 29 135
- Aug 30 139
- Aug 31 131
- Sep 1 135
- Sep 2 134
- Sep 3 128
Values in µg/m³, limit 120 µg/m³.
Months of 2024
| Month | Days above 120 | Highest 8 h | No readings |
|---|---|---|---|
| January | 0 | 97 | 0 |
| February | 0 | 107 | 0 |
| March | 0 | 111 | 0 |
| April | 3 above the number allowed | 124 | 0 |
| May | 4 above the number allowed | 131 | 0 |
| June | 7 above the number allowed | 134 | 0 |
| July | 10 above the number allowed | 140 | 10 |
| August | 22 above the number allowed | 149 | 0 |
| September | 3 above the number allowed | 135 | 0 |
| October | 0 | 102 | 15 |
| November | 0 | 92 | 5 |
| December | 0 | 91 | 0 |
Values in µg/m³. ■ marks a month with at least one day above the limit; the number allowed applies to the whole year. “No readings”: days on which not a single reading came from the station.
Values as a table
| Hour to | µg/m³ | Note |
|---|---|---|
| Wednesday, 10/7 | ||
| 22:00 | 115 | model estimate, not counted |
| 21:00 | 116 | model estimate, not counted |
| 20:00 | 114 | model estimate, not counted |
| 19:00 | 115 | model estimate, not counted |
| 18:00 | 116 | model estimate, not counted |
| 17:00 | 115 | model estimate, not counted |
| 16:00 | 114 | model estimate, not counted |
| 15:00 | 114 | model estimate, not counted |
| 14:00 | 112 | model estimate, not counted |
| 13:00 | 112 | model estimate, not counted |
| 12:00 | 110 | model estimate, not counted |
| 11:00 | 109 | model estimate, not counted |
| 10:00 | 108 | model estimate, not counted |
| 09:00 | 108 | model estimate, not counted |
| 08:00 | 107 | model estimate, not counted |
| 07:00 | 110 | model estimate, not counted |
| 06:00 | 110 | model estimate, not counted |
| 05:00 | 110 | model estimate, not counted |
| 04:00 | 110 | model estimate, not counted |
| 03:00 | 109 | model estimate, not counted |
| 02:00 | 109 | model estimate, not counted |
| 01:00 | 108 | model estimate, not counted |
| Tuesday, 10/6 | ||
| 00:00 | 108 | model estimate, not counted |
| 23:00 | 108 | model estimate, not counted |
| 22:00 | 108 | model estimate, not counted |
| 21:00 | 108 | model estimate, not counted |
| 20:00 | 108 | model estimate, not counted |
| 19:00 | 108 | model estimate, not counted |
| 18:00 | 108 | model estimate, not counted |
| 17:00 | 108 | model estimate, not counted |
| 16:00 | 108 | model estimate, not counted |
| 15:00 | 108 | model estimate, not counted |
| 14:00 | 108 | model estimate, not counted |
| 13:00 | 108 | model estimate, not counted |
| 12:00 | 108 | model estimate, not counted |
| 11:00 | 108 | model estimate, not counted |
| 10:00 | 108 | model estimate, not counted |
| 09:00 | 108 | model estimate, not counted |
| 08:00 | 108 | model estimate, not counted |
| 07:00 | 108 | model estimate, not counted |
| 06:00 | 108 | model estimate, not counted |
| 05:00 | 108 | model estimate, not counted |
| 04:00 | 108 | model estimate, not counted |
| 03:00 | 108 | model estimate, not counted |
| 02:00 | 108 | model estimate, not counted |
| 01:00 | 108 | model estimate, not counted |
| Monday, 10/5 | ||
| 00:00 | 108 | model estimate, not counted |
| 23:00 | 108 | model estimate, not counted |
| 22:00 | 108 | model estimate, not counted |
| 21:00 | 108 | model estimate, not counted |
| 20:00 | 108 | model estimate, not counted |
| 19:00 | 108 | model estimate, not counted |
| 18:00 | 108 | model estimate, not counted |
| 17:00 | 108 | model estimate, not counted |
| 16:00 | 108 | model estimate, not counted |
| 15:00 | 108 | model estimate, not counted |
| 14:00 | 108 | model estimate, not counted |
| 13:00 | 108 | model estimate, not counted |
| 12:00 | 108 | model estimate, not counted |
| 11:00 | 108 | model estimate, not counted |
| 10:00 | 108 | model estimate, not counted |
| 09:00 | 108 | model estimate, not counted |
| 08:00 | 108 | model estimate, not counted |
| 07:00 | 108 | model estimate, not counted |
| 06:00 | 108 | model estimate, not counted |
| 05:00 | 108 | model estimate, not counted |
| 04:00 | 108 | model estimate, not counted |
| 03:00 | 108 | model estimate, not counted |
| 02:00 | 108 | model estimate, not counted |
| 01:00 | 108 | model estimate, not counted |
| Sunday, 10/4 | ||
| 00:00 | 108 | model estimate, not counted |
| 23:00 | 108 | model estimate, not counted |
| 22:00 | 108 | model estimate, not counted |
| 21:00 | 108 | model estimate, not counted |
| 20:00 | 108 | model estimate, not counted |
| 19:00 | 108 | model estimate, not counted |
| 18:00 | 108 | model estimate, not counted |
| 17:00 | 108 | model estimate, not counted |
| 16:00 | 108 | model estimate, not counted |
| 15:00 | 108 | model estimate, not counted |
| 14:00 | 108 | model estimate, not counted |
| 13:00 | 108 | model estimate, not counted |
| 12:00 | 108 | model estimate, not counted |
| 11:00 | 108 | model estimate, not counted |
| 10:00 | 108 | model estimate, not counted |
| 09:00 | 108 | model estimate, not counted |
| 08:00 | 108 | model estimate, not counted |
| 07:00 | 108 | model estimate, not counted |
| 06:00 | 108 | model estimate, not counted |
| 05:00 | 115 | model estimate, not counted |
| 04:00 | 115 | model estimate, not counted |
| 03:00 | 115 | model estimate, not counted |
| 02:00 | 115 | model estimate, not counted |
| 01:00 | 115 | model estimate, not counted |
| Saturday, 10/3 | ||
| 00:00 | 115 | model estimate, not counted |
| 23:00 | 115 | model estimate, not counted |
| 22:00 | 115 | model estimate, not counted |
| 21:00 | 115 | model estimate, not counted |
| 20:00 | 115 | model estimate, not counted |
| 19:00 | 115 | model estimate, not counted |
| 18:00 | 115 | model estimate, not counted |
| 17:00 | 115 | model estimate, not counted |
| 16:00 | 115 | model estimate, not counted |
| 15:00 | 115 | model estimate, not counted |
| 14:00 | 115 | model estimate, not counted |
| 13:00 | 115 | model estimate, not counted |
| 12:00 | 115 | model estimate, not counted |
| 11:00 | 115 | model estimate, not counted |
| 10:00 | 115 | model estimate, not counted |
| 09:00 | 115 | model estimate, not counted |
| 08:00 | 115 | model estimate, not counted |
| 07:00 | 115 | model estimate, not counted |
| 06:00 | 115 | model estimate, not counted |
| 05:00 | 115 | model estimate, not counted |
| 04:00 | 115 | model estimate, not counted |
| 03:00 | 115 | model estimate, not counted |
| 02:00 | 115 | model estimate, not counted |
| 01:00 | 115 | model estimate, not counted |
| Friday, 10/2 | ||
| 00:00 | 115 | model estimate, not counted |
| 23:00 | 115 | model estimate, not counted |
| 22:00 | 115 | model estimate, not counted |
| 21:00 | 115 | model estimate, not counted |
| 20:00 | 115 | model estimate, not counted |
| 19:00 | 115 | model estimate, not counted |
| 18:00 | 115 | model estimate, not counted |
| 17:00 | 115 | model estimate, not counted |
| 16:00 | 115 | model estimate, not counted |
| 15:00 | 115 | model estimate, not counted |
| 14:00 | 115 | model estimate, not counted |
| 13:00 | 115 | model estimate, not counted |
| 12:00 | 115 | model estimate, not counted |
| 11:00 | 115 | model estimate, not counted |
| 10:00 | 115 | model estimate, not counted |
| 09:00 | 115 | model estimate, not counted |
| 08:00 | 115 | model estimate, not counted |
| 07:00 | 115 | model estimate, not counted |
| 06:00 | 115 | model estimate, not counted |
| 05:00 | 115 | model estimate, not counted |
| 04:00 | 115 | model estimate, not counted |
| 03:00 | 115 | model estimate, not counted |
| 02:00 | 115 | model estimate, not counted |
| 01:00 | 115 | model estimate, not counted |
| Thursday, 10/1 | ||
| 00:00 | 115 | model estimate, not counted |
| 23:00 | 115 | model estimate, not counted |
| 22:00 | 115 | model estimate, not counted |
| 21:00 | 115 | model estimate, not counted |
| 20:00 | 115 | model estimate, not counted |
| 19:00 | 115 | model estimate, not counted |
| 18:00 | 115 | model estimate, not counted |
| 17:00 | 115 | model estimate, not counted |
| 16:00 | 115 | model estimate, not counted |
| 15:00 | 115 | model estimate, not counted |
| 14:00 | 115 | model estimate, not counted |
| 13:00 | 115 | model estimate, not counted |
| 12:00 | 115 | model estimate, not counted |
| 11:00 | 115 | model estimate, not counted |
| 10:00 | 115 | model estimate, not counted |
| 09:00 | 115 | model estimate, not counted |
| 08:00 | 115 | model estimate, not counted |
| 07:00 | 115 | model estimate, not counted |
| 06:00 | 115 | model estimate, not counted |
| 05:00 | 115 | model estimate, not counted |
| 04:00 | 115 | model estimate, not counted |
| 03:00 | 115 | model estimate, not counted |
| 02:00 | 115 | model estimate, not counted |
| 01:00 | 115 | model estimate, not counted |
Values as a table
| Day | µg/m³ | Note |
|---|---|---|
| Tue, 10/6 | no data from the station | |
| Mon, 10/5 | no data from the station | |
| Sun, 10/4 | no data from the station | |
| Sat, 10/3 | no data from the station | |
| Fri, 10/2 | no data from the station | |
| Thu, 10/1 | no data from the station | |
| Wed, 9/30 | no data from the station | |
| Tue, 9/29 | too few readings | |
| Mon, 9/28 | 108.2 | provisional |
| Sun, 9/27 | 108.6 | provisional |
| Sat, 9/26 | 102.2 | provisional |
| Fri, 9/25 | 99.5 | provisional |
| Thu, 9/24 | 93.3 | provisional |
| Wed, 9/23 | 88.9 | provisional |
| Tue, 9/22 | 92.9 | provisional |
| Mon, 9/21 | 106.6 | provisional |
| Sun, 9/20 | 112.1 | provisional |
| Sat, 9/19 | 121.9 | above the limit · provisional |
| Fri, 9/18 | 116.2 | provisional |
| Thu, 9/17 | 114 | provisional |
| Wed, 9/16 | 103 | provisional |
| Tue, 9/15 | 98.6 | provisional |
| Mon, 9/14 | 101.3 | provisional |
| Sun, 9/13 | 105.7 | provisional |
| Sat, 9/12 | 100.6 | provisional |
| Fri, 9/11 | 100.3 | provisional |
| Thu, 9/10 | 107.5 | provisional |
| Wed, 9/9 | 116.1 | provisional |
| Tue, 9/8 | 126.4 | above the limit · provisional |
| Mon, 9/7 | 135.2 | above the limit · provisional |
Values as a table
| Month | µg/m³ | a year earlier | Note |
|---|---|---|---|
| October 2026 so far | too few readings | 81.1 | year before: same days · 6 days without data from the station |
| September 2026 | 102 | 92.1 | measured in 94 % of hours · provisional · 1 day without data from the station |
| August 2026 | 117.1 | 113.1 | measured in 91 % of hours · provisional · 2 days without data from the station |
| July 2026 | 124 | 112.2 | measured in 97 % of hours · provisional |
| June 2026 | 114 | 118.6 | measured in 86 % of hours · provisional |
| May 2026 | 116.7 | 106.9 | measured in 91 % of hours · provisional |
| April 2026 | 116.1 | 98.8 | measured in 93 % of hours · provisional · 1 day without data from the station |
| March 2026 | 99 | 92.5 | measured in 99 % of hours · provisional |
| February 2026 | 89.7 | 86.7 | measured in 100 % of hours · provisional |
| January 2026 | 83.8 | 78.7 | measured in 94 % of hours · provisional |
| December 2025 | 72.8 | 73.2 | measured in 97 % of hours · verified |
| November 2025 | too few readings | 77 | measured in 48 % of hours · verified · 14 days without data from the station |
O₃ by year
Yardstick: EU limits (Directive 2008/50/EC)
| Measure | 2026* | 2025 | 2024 |
|---|---|---|---|
| Days with 8-hour average above 120 µg/m³ (target value 25) | ≥ 98 | ≥ 59 | ≥ 49 |
| Annual average, µg/m³ | 106.8* | 95.5 | too few |
| Highest 8-hour average, µg/m³ | 162April 27 | 166July 5 | 149August 26 |
| Hours measured | 92 % | 92 % | 87 % |
| Days without any reading from the station | 10 | 21 | 30 |
* 2026 up to October 6; the average since the start of the year is not yet an annual average.
The monitoring networks have not yet finally verified this year’s data. The EEA publishes verified values once a year.
≥ means at least: more than a tenth of the days or hours are missing, so the real number may be higher.
■ and a figure in red: more than is allowed for the whole year.
The column for 2023 is shown on wider screens.
The worst days of 2024
| Day | Highest 8 h | Times the limit |
|---|---|---|
| Aug 26, 2024 | 149 | 1.2 × |
| Aug 2, 2024 | 149 | 1.2 × |
| Aug 1, 2024 | 146 | 1.2 × |
| Jul 20, 2024 | 140 | 1.2 × |
| Aug 30, 2024 | 139 | 1.2 × |
Daily average in µg/m³, daily limit 120 µg/m³. Days with the same unverified value over many hours are not on this list.
Outages in the last 12 months
Every period of at least 24 hours in which no reading arrived from this station.
Days without a reading: 32
7 outages, 756 hours in total in the last 12 months.
Timeline of outages from October 7, 2025 to today
| From | To | Duration |
|---|---|---|
| Sep 29, 2026 14:00 | still ongoing | 8 days |
| Aug 11, 2026 14:00 | Aug 14, 2026 09:00 | 3 days |
| Jun 27, 2026 17:00 | Jun 28, 2026 18:00 | 25 hours |
| Jun 4, 2026 09:00 | Jun 5, 2026 10:00 | 25 hours |
| Apr 5, 2026 10:00 | Apr 7, 2026 10:00 | 2 days |
| Jan 15, 2026 06:00 | Jan 16, 2026 10:00 | 28 hours |
| Nov 13, 2025 06:00 | Nov 28, 2025 08:00 | 15 days |
Calculated from the hourly values the EEA publishes. If late values arrive afterwards, an outage gets shorter or disappears.
Where the data comes from
Measured by Državna mreža za trajno praćenje kvalitete zraka. We take the values from the European Environment Agency (EEA) under the CC BY 4.0 licence.
Values marked provisional have not been fully checked by the network yet. The EEA publishes verified data for the previous year once a year, usually by the end of September.
An hourly value is the average of one hour. We show the end of the hour: the value to 18:00 was measured from 17:00 to 18:00.
A day runs from midnight to midnight local time.
We only show an average when at least three out of four hours in the period have a reading. The EU air quality directive requires this for daily averages, and we apply the same rule to longer periods. We compare an annual average with the EU limit only once 90 % of hours are measured, as the directive requires. For 12 months and for a year we ask for more: if less than 90 % of hours are measured, every full calendar month needs readings for at least half of its hours. Otherwise a whole season could be missing from the average, such as summer, when ozone is highest.
We do not call a difference of up to 10 % a change, nor one of up to 1 µg/m³ at low levels, because weather and measurement uncertainty alone cause differences that size.
When a station sends no reading, the EEA sometimes fills the hour with a model estimate. We draw those hours dashed and leave them out of every average.
The EU limits come from Directive 2008/50/EC. Here they serve as a yardstick for comparison. When more than a tenth of the days or hours are missing, the number of exceedances can only be higher, so we write “at least” in front of it.
samoEKO is a brand of samoLabs, Juelich.