Country Opportunity Summary — Mainland

Per-country counts of land cells, data coverage, and clean (no 5G + no flights) opportunity. Sorted by clean % (highest opportunity first). Islands listed in the next table.

Country	Land	w/ Hardness	w/ AQ	No 5G	No Flights	Clean	Clean %	Med Hardness	Med PM2.5
Finland	988	538	964	981	783	780	78.9%	11 mg/L	1.9 µg/m³
Turkey	1,230	1,230	321	1,230	871	871	70.8%	250 mg/L	9.1 µg/m³
Sweden	1,251	571	1,156	1,250	807	806	64.4%	14 mg/L	2.1 µg/m³
Norway	969	544	965	969	485	485	50.1%	11 mg/L	2.5 µg/m³
Latvia	151	91	73	151	69	69	45.7%	194 mg/L	3.4 µg/m³
Estonia	113	85	113	113	43	43	38.1%	200 mg/L	3.5 µg/m³
Lithuania	141	139	0	140	47	47	33.3%	221 mg/L	—
Scotland	160	98	64	159	31	31	19.4%	16 mg/L	2.9 µg/m³
Romania	438	188	418	438	79	79	18.0%	168 mg/L	7.8 µg/m³
Poland	657	449	43	657	66	66	10.0%	184 mg/L	13.1 µg/m³
Bulgaria	196	196	196	196	10	10	5.1%	197 mg/L	8.2 µg/m³
Albania	49	27	49	49	2	2	4.1%	100 mg/L	10.0 µg/m³
Spain	844	844	844	769	29	29	3.4%	170 mg/L	5.6 µg/m³
Greece	191	135	191	190	4	4	2.1%	147 mg/L	9.5 µg/m³
Denmark	96	72	11	95	2	2	2.1%	18 mg/L	5.7 µg/m³
Slovakia	98	94	98	96	2	2	2.0%	150 mg/L	9.2 µg/m³
Hungary	174	83	151	153	3	3	1.7%	250 mg/L	8.7 µg/m³
Serbia	145	40	145	145	2	2	1.4%	153 mg/L	11.2 µg/m³
Portugal	147	117	147	146	2	2	1.4%	39 mg/L	6.1 µg/m³
Italy	447	284	447	446	4	4	0.9%	166 mg/L	10.3 µg/m³
France	1,018	708	957	768	5	4	0.4%	123 mg/L	6.8 µg/m³
Germany	740	577	219	632	1	1	0.1%	162 mg/L	8.9 µg/m³
Austria	157	136	141	134	0	0	0.0%	99 mg/L	8.4 µg/m³
Belgium	63	33	13	58	0	0	0.0%	194 mg/L	7.9 µg/m³
Czechia	156	153	107	155	0	0	0.0%	67 mg/L	9.6 µg/m³
Bosnia and Herz.	92	68	92	92	0	0	0.0%	141 mg/L	13.2 µg/m³
England	284	207	3	205	0	0	0.0%	180 mg/L	7.0 µg/m³
Luxembourg	5	3	5	5	0	0	0.0%	40 mg/L	8.2 µg/m³
Croatia	103	78	103	102	0	0	0.0%	174 mg/L	10.1 µg/m³
North Macedonia	42	21	42	42	0	0	0.0%	70 mg/L	10.3 µg/m³
Montenegro	23	12	23	23	0	0	0.0%	70 mg/L	10.0 µg/m³
Netherlands	78	56	0	77	0	0	0.0%	172 mg/L	—
Slovenia	39	39	39	37	0	0	0.0%	170 mg/L	10.5 µg/m³
Switzerland	75	67	72	58	0	0	0.0%	88 mg/L	7.2 µg/m³
Wales	42	42	0	39	0	0	0.0%	180 mg/L	—

Country Opportunity Summary — Islands

Island regions only (Iceland, Cyprus, Malta, Sicily, Sardinia, Corsica, Balearics, Crete, Aegean Is., Hebrides, Orkney/Shetland, Faroe Is., Channel Is., Isle of Man, Ireland, N. Ireland). Different lifestyle to mainland — micro-climate, isolation, weather changes fast.

Country	Land	w/ Hardness	w/ AQ	No 5G	No Flights	Clean	Clean %	Med Hardness	Med PM2.5
Iceland	311	311	0	311	307	307	98.7%	15 mg/L	—
Scotland	22	5	16	22	8	8	36.4%	21 mg/L	3.0 µg/m³
France	15	14	15	15	3	3	20.0%	30 mg/L	6.1 µg/m³
Greece	20	9	20	20	2	2	10.0%	180 mg/L	9.0 µg/m³
Italy	81	43	81	81	8	8	9.9%	168 mg/L	8.9 µg/m³
Ireland	144	144	0	143	5	5	3.5%	140 mg/L	—
Northern Ireland	32	32	0	31	1	1	3.1%	200 mg/L	—
Turkey	73	73	73	72	2	2	2.7%	180 mg/L	11.7 µg/m³
Cyprus	8	8	0	8	0	0	0.0%	300 mg/L	—
Malta	1	0	1	1	0	0	0.0%	—	12.7 µg/m³
Spain	9	9	9	9	0	0	0.0%	401 mg/L	5.6 µg/m³

Top 20 Zones — by Category

Each table ranks cells across the chosen axis. The final Best Overall table combines all four factors. Click a coordinate to open it in Google Maps.

Softest Water (lowest mg/L CaCO₃)

#	Coordinates	Hardness	Class	PM2.5	5G	Flights
1	66.875, 27.625 · Kemijärvi · Lapland, FI	0 mg/L	very soft	1.7 µg/m³	no	no
2	66.875, 26.125 · Rovaniemi · Lapland, FI	0 mg/L	very soft	1.8 µg/m³	no	no
3	66.625, 28.375 · Salla · Lapland, FI	0 mg/L	very soft	1.6 µg/m³	no	no
4	62.375, 27.875 · Leppävirta · North Savo, FI	0 mg/L	very soft	2.4 µg/m³	no	no
5	62.375, 28.375 · Heinävesi · North Karelia, FI	0 mg/L	very soft	1.9 µg/m³	no	no
6	62.125, 28.125 · Rantasalmi · South Savo, FI	0 mg/L	very soft	2.0 µg/m³	no	no
7	58.875, 6.875 · Sirdal · Agder, NO	1 mg/L	very soft	2.8 µg/m³	no	yes
8	60.125, 5.625 · Bjørnafjorden · Vestland, NO	1 mg/L	very soft	3.2 µg/m³	no	yes
9	60.375, 6.125 · Kvam herad · Vestland, NO	1 mg/L	very soft	2.8 µg/m³	no	yes
10	58.375, 7.125 · Hægebostad · Agder, NO	1 mg/L	very soft	3.4 µg/m³	no	yes
11	58.625, 6.875 · Kvinesdal · Agder, NO	1 mg/L	very soft	3.0 µg/m³	no	yes
12	60.375, 5.875 · Samnanger · Vestland, NO	1 mg/L	very soft	2.7 µg/m³	no	yes
13	58.625, 7.375 · Åseral · Agder, NO	1 mg/L	very soft	2.9 µg/m³	no	yes
14	58.375, 6.875 · Flekkefjord · Agder, NO	1 mg/L	very soft	3.5 µg/m³	no	no
15	58.875, 7.125 · Bygland · Agder, NO	1 mg/L	very soft	2.7 µg/m³	no	no
16	60.625, 5.875 · Vaksdal · Vestland, NO	1 mg/L	very soft	2.5 µg/m³	no	yes
17	60.625, 5.625 · Osterøy · Vestland, NO	1 mg/L	very soft	2.6 µg/m³	no	yes
18	60.625, 6.125 · Voss · Vestland, NO	1 mg/L	very soft	2.6 µg/m³	no	no
19	61.875, 6.125 · Stad · Vestland, NO	1 mg/L	very soft	2.8 µg/m³	no	yes
20	62.125, 5.875 · Volda · Møre og Romsdal, NO	1 mg/L	very soft	2.8 µg/m³	no	no

Cleanest Air (lowest PM2.5 µg/m³, 30-day mean)

#	Coordinates	PM2.5	Class	Hardness	5G	Flights
1	65.125, 29.625 · Suomussalmi · Kainuu, FI	1.5 µg/m³	excellent (≤WHO AQG)	— mg/L	no	no
2	65.625, 29.875 · Луусалмское сельское поселение · Kalevala District, RU	1.5 µg/m³	excellent (≤WHO AQG)	— mg/L	no	no
3	65.625, 29.625 · Kuusamo · North Ostrobothnia, FI	1.5 µg/m³	excellent (≤WHO AQG)	— mg/L	no	no
4	65.625, 28.625 · Taivalkoski · North Ostrobothnia, FI	1.6 µg/m³	excellent (≤WHO AQG)	— mg/L	no	no
5	66.375, 29.625 · Кестеньгское сельское поселение · Loukhsky District, RU	1.6 µg/m³	excellent (≤WHO AQG)	35 mg/L	no	no
6	64.625, 29.625 · Kuhmo · Kainuu, FI	1.6 µg/m³	excellent (≤WHO AQG)	21 mg/L	no	no
7	64.625, 30.125 · Костомукшский муниципальный округ, RU	1.6 µg/m³	excellent (≤WHO AQG)	6 mg/L	no	no
8	69.125, 25.375 · Karasjok · Finnmark, NO	1.6 µg/m³	excellent (≤WHO AQG)	— mg/L	no	no
9	65.125, 28.125 · Puolanka · Kainuu, FI	1.6 µg/m³	excellent (≤WHO AQG)	10 mg/L	no	no
10	65.875, 27.625 · Pudasjärvi · North Ostrobothnia, FI	1.6 µg/m³	excellent (≤WHO AQG)	— mg/L	no	no
11	68.875, 25.625 · Inari · Lapland, FI	1.6 µg/m³	excellent (≤WHO AQG)	— mg/L	no	no
12	64.625, 29.125 · Hyrynsalmi · Kainuu, FI	1.6 µg/m³	excellent (≤WHO AQG)	— mg/L	no	no
13	65.875, 27.875 · Posio · Lapland, FI	1.6 µg/m³	excellent (≤WHO AQG)	6 mg/L	no	no
14	66.625, 28.625 · Salla · Lapland, FI	1.6 µg/m³	excellent (≤WHO AQG)	24 mg/L	no	no
15	63.875, 30.375 · Муезерский муниципальный округ, RU	1.6 µg/m³	excellent (≤WHO AQG)	— mg/L	no	no
16	69.125, 24.625 · Kautokeino · Finnmark, NO	1.6 µg/m³	excellent (≤WHO AQG)	— mg/L	no	no
17	69.875, 25.625 · Porsanger · Finnmark, NO	1.6 µg/m³	excellent (≤WHO AQG)	36 mg/L	no	no
18	69.875, 25.875 · Tana · Finnmark, NO	1.6 µg/m³	excellent (≤WHO AQG)	— mg/L	no	no
19	69.625, 26.875 · Utsjoki · Lapland, FI	1.6 µg/m³	excellent (≤WHO AQG)	— mg/L	no	no
20	66.625, 28.125 · Kemijärvi · Lapland, FI	1.6 µg/m³	excellent (≤WHO AQG)	7 mg/L	no	no

No 5G Coverage

20 best cells with zero 5G towers, ranked by water + air score.

#	Coordinates	Hardness	PM2.5	Flights
1	66.625, 28.375 · Salla · Lapland, FI	0 mg/L · very soft	1.6 µg/m³ · excellent (≤WHO AQG)	no
2	66.625, 27.875 · Kemijärvi · Lapland, FI	0 mg/L · very soft	1.7 µg/m³ · excellent (≤WHO AQG)	no
3	66.875, 26.125 · Rovaniemi · Lapland, FI	0 mg/L · very soft	1.8 µg/m³ · excellent (≤WHO AQG)	no
4	66.375, 27.875 · Posio · Lapland, FI	3 mg/L · very soft	1.6 µg/m³ · excellent (≤WHO AQG)	no
5	63.125, 30.875 · Ilomantsi · North Karelia, FI	3 mg/L · very soft	1.7 µg/m³ · excellent (≤WHO AQG)	no
6	63.125, 30.625 · Lieksa · North Karelia, FI	3 mg/L · very soft	1.7 µg/m³ · excellent (≤WHO AQG)	no
7	69.625, 26.625 · Utsjoki · Lapland, FI	4 mg/L · very soft	1.6 µg/m³ · excellent (≤WHO AQG)	no
8	65.625, 26.625 · Pudasjärvi · North Ostrobothnia, FI	3 mg/L · very soft	1.7 µg/m³ · excellent (≤WHO AQG)	no
9	69.875, 26.375 · Tana · Finnmark, NO	4 mg/L · very soft	1.6 µg/m³ · excellent (≤WHO AQG)	no
10	65.625, 26.125 · Ii · North Ostrobothnia, FI	3 mg/L · very soft	1.7 µg/m³ · excellent (≤WHO AQG)	yes
11	65.375, 26.375 · Oulu · North Ostrobothnia, FI	3 mg/L · very soft	1.7 µg/m³ · excellent (≤WHO AQG)	no
12	62.375, 28.375 · Heinävesi · North Karelia, FI	0 mg/L · very soft	1.9 µg/m³ · excellent (≤WHO AQG)	no
13	70.125, 26.125 · Lebesby · Finnmark, NO	4 mg/L · very soft	1.7 µg/m³ · excellent (≤WHO AQG)	no
14	62.375, 28.125 · Leppävirta · North Savo, FI	0 mg/L · very soft	1.9 µg/m³ · excellent (≤WHO AQG)	no
15	65.875, 27.125 · Ranua · Lapland, FI	5 mg/L · very soft	1.6 µg/m³ · excellent (≤WHO AQG)	no
16	68.875, 26.625 · Inari · Lapland, FI	6 mg/L · very soft	1.6 µg/m³ · excellent (≤WHO AQG)	no
17	64.625, 30.125 · Костомукшский муниципальный округ, RU	6 mg/L · very soft	1.6 µg/m³ · excellent (≤WHO AQG)	no
18	68.125, 21.375 · Kiruna kommun · Norrbotten County, SE	4 mg/L · very soft	1.7 µg/m³ · excellent (≤WHO AQG)	no
19	64.625, 29.875 · Suomussalmi · Kainuu, FI	6 mg/L · very soft	1.6 µg/m³ · excellent (≤WHO AQG)	no
20	62.625, 31.375 · Suojärvi District, RU	4 mg/L · very soft	1.8 µg/m³ · excellent (≤WHO AQG)	no

No Flight Activity

20 best cells with zero ADS-B flight observations, ranked by water + air score.

#	Coordinates	Hardness	PM2.5	5G
1	66.625, 28.375 · Salla · Lapland, FI	0 mg/L · very soft	1.6 µg/m³ · excellent (≤WHO AQG)	no
2	66.625, 27.875 · Kemijärvi · Lapland, FI	0 mg/L · very soft	1.7 µg/m³ · excellent (≤WHO AQG)	no
3	66.875, 26.125 · Rovaniemi · Lapland, FI	0 mg/L · very soft	1.8 µg/m³ · excellent (≤WHO AQG)	no
4	66.375, 27.875 · Posio · Lapland, FI	3 mg/L · very soft	1.6 µg/m³ · excellent (≤WHO AQG)	no
5	63.125, 30.875 · Ilomantsi · North Karelia, FI	3 mg/L · very soft	1.7 µg/m³ · excellent (≤WHO AQG)	no
6	63.125, 30.625 · Lieksa · North Karelia, FI	3 mg/L · very soft	1.7 µg/m³ · excellent (≤WHO AQG)	no
7	69.625, 26.625 · Utsjoki · Lapland, FI	4 mg/L · very soft	1.6 µg/m³ · excellent (≤WHO AQG)	no
8	65.625, 26.625 · Pudasjärvi · North Ostrobothnia, FI	3 mg/L · very soft	1.7 µg/m³ · excellent (≤WHO AQG)	no
9	69.875, 26.375 · Tana · Finnmark, NO	4 mg/L · very soft	1.6 µg/m³ · excellent (≤WHO AQG)	no
10	65.375, 26.375 · Oulu · North Ostrobothnia, FI	3 mg/L · very soft	1.7 µg/m³ · excellent (≤WHO AQG)	no
11	62.375, 28.375 · Heinävesi · North Karelia, FI	0 mg/L · very soft	1.9 µg/m³ · excellent (≤WHO AQG)	no
12	70.125, 26.125 · Lebesby · Finnmark, NO	4 mg/L · very soft	1.7 µg/m³ · excellent (≤WHO AQG)	no
13	62.375, 28.125 · Leppävirta · North Savo, FI	0 mg/L · very soft	1.9 µg/m³ · excellent (≤WHO AQG)	no
14	65.875, 27.125 · Ranua · Lapland, FI	5 mg/L · very soft	1.6 µg/m³ · excellent (≤WHO AQG)	no
15	68.875, 26.625 · Inari · Lapland, FI	6 mg/L · very soft	1.6 µg/m³ · excellent (≤WHO AQG)	no
16	64.625, 30.125 · Костомукшский муниципальный округ, RU	6 mg/L · very soft	1.6 µg/m³ · excellent (≤WHO AQG)	no
17	68.125, 21.375 · Kiruna kommun · Norrbotten County, SE	4 mg/L · very soft	1.7 µg/m³ · excellent (≤WHO AQG)	no
18	64.625, 29.875 · Suomussalmi · Kainuu, FI	6 mg/L · very soft	1.6 µg/m³ · excellent (≤WHO AQG)	no
19	62.625, 31.375 · Suojärvi District, RU	4 mg/L · very soft	1.8 µg/m³ · excellent (≤WHO AQG)	no
20	64.875, 26.625 · Utajärvi · North Ostrobothnia, FI	4 mg/L · very soft	1.7 µg/m³ · excellent (≤WHO AQG)	no

Best Overall (all 4 factors combined)

Score = mean of hardness/350, PM2.5/25, has_5g, has_flights — all clipped to ≤1. 0 = excellent on every axis (no 5G, no flights, soft water, clean air). 1 = poor on every axis. Cells need water + air data to qualify.

#	Coordinates	Score	Hardness	PM2.5	5G	Flights
1	66.625, 28.375 · Salla · Lapland, FI	0.016	0 mg/L · very soft	1.6 µg/m³ · excellent (≤WHO AQG)	no	no
2	66.625, 27.875 · Kemijärvi · Lapland, FI	0.017	0 mg/L · very soft	1.7 µg/m³ · excellent (≤WHO AQG)	no	no
3	66.875, 26.125 · Rovaniemi · Lapland, FI	0.018	0 mg/L · very soft	1.8 µg/m³ · excellent (≤WHO AQG)	no	no
4	66.375, 27.875 · Posio · Lapland, FI	0.018	3 mg/L · very soft	1.6 µg/m³ · excellent (≤WHO AQG)	no	no
5	63.125, 30.875 · Ilomantsi · North Karelia, FI	0.019	3 mg/L · very soft	1.7 µg/m³ · excellent (≤WHO AQG)	no	no
6	63.125, 30.625 · Lieksa · North Karelia, FI	0.019	3 mg/L · very soft	1.7 µg/m³ · excellent (≤WHO AQG)	no	no
7	69.625, 26.625 · Utsjoki · Lapland, FI	0.019	4 mg/L · very soft	1.6 µg/m³ · excellent (≤WHO AQG)	no	no
8	65.625, 26.625 · Pudasjärvi · North Ostrobothnia, FI	0.019	3 mg/L · very soft	1.7 µg/m³ · excellent (≤WHO AQG)	no	no
9	69.875, 26.125 · Tana · Finnmark, NO	0.019	4 mg/L · very soft	1.6 µg/m³ · excellent (≤WHO AQG)	no	no
10	65.375, 26.375 · Oulu · North Ostrobothnia, FI	0.019	3 mg/L · very soft	1.7 µg/m³ · excellent (≤WHO AQG)	no	no
11	62.375, 28.375 · Heinävesi · North Karelia, FI	0.019	0 mg/L · very soft	1.9 µg/m³ · excellent (≤WHO AQG)	no	no
12	70.125, 26.125 · Lebesby · Finnmark, NO	0.020	4 mg/L · very soft	1.7 µg/m³ · excellent (≤WHO AQG)	no	no
13	62.375, 28.125 · Leppävirta · North Savo, FI	0.020	0 mg/L · very soft	1.9 µg/m³ · excellent (≤WHO AQG)	no	no
14	65.875, 27.125 · Ranua · Lapland, FI	0.020	5 mg/L · very soft	1.6 µg/m³ · excellent (≤WHO AQG)	no	no
15	68.875, 26.625 · Inari · Lapland, FI	0.020	6 mg/L · very soft	1.6 µg/m³ · excellent (≤WHO AQG)	no	no
16	64.625, 30.125 · Костомукшский муниципальный округ, RU	0.020	6 mg/L · very soft	1.6 µg/m³ · excellent (≤WHO AQG)	no	no
17	68.125, 21.375 · Kiruna kommun · Norrbotten County, SE	0.020	4 mg/L · very soft	1.7 µg/m³ · excellent (≤WHO AQG)	no	no
18	64.625, 29.875 · Suomussalmi · Kainuu, FI	0.020	6 mg/L · very soft	1.6 µg/m³ · excellent (≤WHO AQG)	no	no
19	62.625, 31.375 · Suojärvi District, RU	0.020	4 mg/L · very soft	1.8 µg/m³ · excellent (≤WHO AQG)	no	no
20	64.875, 26.625 · Utajärvi · North Ostrobothnia, FI	0.020	4 mg/L · very soft	1.7 µg/m³ · excellent (≤WHO AQG)	no	no